Drill Stem Products

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Drill Stem Valves KELLYGUARD™ DRILL STEM VALVES CHECKGUARD ® VALVES CATALOG DSV 2003 (REPLACES CATALOG PC 9701A) R E D E F I N I N G R E L I A B I L I T Y™

Transcript of Drill Stem Products

Page 1: Drill Stem Products

HeadquartersHydril Company

P.O. Box 60458 ▼ Houston, TX 77205-04583300 N. Sam Houston Parkway East ▼ Houston, TX 77032-3411

Telephone: (281) 449-2000 ▼ Fax: (281) 985-3353

For a Hydril Sales, Service or Manufacturing location nearest you, please check our website at www.hydril.com/locations

2M GRAPH 10/03

1-800-999-1601TOLL FREE IN THE U.S.A. AND CANADA

http://www.hydril.com

Drill Stem ValvesKELLYGUARD™ DRILL STEM VALVES • CHECKGUARD® VALVESCATALOG DSV 2003 (REPLACES CATALOG PC 9701A)

R E D E F I N I N G R E L I A B I L I T Y ™

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The term rubber goods includes synthetic compounds, such as Nitrile Copolymers and Neoprene, as well asnatural rubber parts.The ideal storage situation for rubber goods would be in vacuum-sealed containers maintained in a cool, dry, darkstorage area. Atmosphere, light, and heat accelerate deterioration of rubber goods. The term aging meanscumulative effects of all three attacking agents over a period of time. The rubber goods are also affected bystretching or bending from normal shape, extreme cold, or chemical reactions with solvents and petroleumproducts.The following recommendations will allow vendors and users of oil field equipment to maximize normally availablestorage facilities for rubber goods.

Rubber Goods Storage for Checkguardand Kellyguard Valves

1. Keep the rubber storage area as dark as possible– preferably indoors, not outdoors, and away fromdirect sunlight, skylights, windows, and directartificial lighting. The ultraviolet content of the lightspectrum accelerates cracking.

2. Select a cool location (ideally below 90°F) that isaway from heaters, stoves and direct blasts ofspace heaters. Heat causes a gradual hardening ofrubber goods. The process is greatly acceleratedwhen ozone or oxygen is present. In extremely coldclimates, some rubber goods become so brittlethey will shatter when dropped or handled roughly.

3. Keep rubber goods away from electrical machinery(motors, switch gear, or any high voltageequipment producing corona). Avoid locationssusceptible to drafts that will carry the atmospherefrom electrical machinery to the rubber goodsstorage area.Exposure to the atmosphere allows ozone (O3), avery active form of oxygen, to react with and beespecially detrimental to rubber goods. Twoprincipal sources of ozone are (1) atmosphericozone, and (2) ozone created by electricaldischarges such as lighting, high voltage corona,and electrical machinery. Points of strain in rubbergoods attacked by ozone are characterized by ahard skin, which eventually crazes into smallcracks and may turn chalky or assume a bark-likeappearance.

4. The practice of first-in, first-out inventorymanagement is essential with rubber goods.

5. Store rubber goods in a relaxed position in theirnormal shape. Stretching or bending rubber goodswill result in accelerated aging or cracking. Forexample, do not hang o-rings on pegs, glands,BOP testers, or operator parts. Periodically inspectto detect aging signs and treat the rubber goodsthat must be stored in a stretched attitude with ageresistant compounds.

6. Rubber goods storage areas should be kept as dryas possible. Remove oil, grease or other foreignmaterials from the storage area to precludespillage on rubber goods. Rubber goods, both

natural and synthetic, possess some degree ofsusceptibility to deterioration from various solvents,especially oil field liquid hydrocarbons, whichcause swelling/shrinkage.

7. If storage for extended periods is anticipated,sealed containers are recommended. Impervioussurface coverings are recommended. Impervioussurface coverings such as waxing will increaseshelf life.Since the aging of a rubber product is dependentupon all of the above factors plus its size, specificcomposition, and function, no precise figure isavailable for "storage life." Generally, the greaterthe ratio of surface area to volume, the moresusceptible a part is to being rendered useless byaging. For example, a relatively large part (byvolume), such as a packing unit, might be expectedto have a much longer useful shelf life than a largediameter O-ring.No general rule can be drawn regarding usability. Alarge, heavy part might suffer the same totalamount of aging as a small, light piece and still beuseful, whereas the light piece would be rendereduseless. Thus, judgment becomes the rule andwhere there is doubt, replace the part.Prior to using rubber goods that have been storedfor periods of time, these checks should be made:

A) Is there "chalking" or "barking"?B) Has the part developed a "hard skin"?C) Do cracks appear? (Sometimes cracks will be

obvious; stretch or bend the part in question so thatany incipient cracks or very thin cracks will berevealed.)

D) Will a suspect part pass a hardness test? (In theevent that the hardness runs 15 points higher thanthe normal hardness of the part, it is considerednon-usable.) Note: Hardness is affected by tem-perature, and readings should be taken with therubber part at 70°F.

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TABLE OF CONTENTS

KELLYGUARD VALVESStandard Model and NACE Trim ................................2

Operational Advantages and ....................................4Durable Components

Kellyguard Valve Features ..........................................5

KELLYGUARD DRILL STEM VALVESEngineering Data........................................................6

Application Data ........................................................7

Parts List ....................................................................8

Detail View of Parts ....................................................9

Assembly Procedure ................................................10

Maintenance and Testing..........................................11

CHECKGUARD VALVESApplications and Operations ....................................12

Offshore Application ................................................13

Checkguard Valve Selection ....................................14

Features....................................................................16

Assembly Parts ........................................................17

Maintenance ............................................................18

Rubber Goods Storage for ......................................19Checkguard and Kellyguard Valves

Hydril’s Kellyguard is a drill stem valve. Drill stemvalves facilitate well control and prevent mud spillage.Hydril produces Kellyguard valves to service both thetraditional and top drive drilling applications. Fortraditional applications, they are attached above andbelow the kelly to close the bore to upward flow fromthe well, or downward flow while making a connection.For top drive applications, Hydril specializes in dualcrank actuator driven valves.

Upper Kellyguard valves are well suited for high flowrates, low to high-pressure sealing, and high tensileloads imposed upon upper kelly cocks. The upperKellyguard valve has left hand-threaded connections,compatible with the swivel and upper kelly connections.The upper Kellyguard valve is used to close the bore ifthe drill string becomes stuck with the kelly in the rotarytable.

Lower Kellyguard valves are rated for the ruggedapplications of lower kelly cocks, including low andhigh-pressure sealing, high tensile strength, and hightorsional strength. They have right hand threadedconnections to mate with the lower kelly end and withdrill pipe tool joints. The lower Kellyguard valve ispositioned below the kelly to close the drill stem bore tohold a kick while preparing to circulate the kick out. Itcan also be used as a mud saver.

Mud saver is the term applied to a lower Kellyguardvalve when it is used to save drilling fluid during aconnection. It saves mud costs and improves safety byreducing slippery mud on the rig floor.

Drill pipe safety valves are lower Kellyguard valveswith connections to mate with the drill pipe tool joint.Ratings are the same as lower Kellyguard valves. Thevalve assists stabbing operations due to its lowoperating torque for easy closing of the valve. Whenrequired, the open valve is stabbed onto the top tooljoint, made-up, and manually closed. It is stored in theopen position on the rig floor.

SealsThe Kellyguard valve is designed for 10,000 or 15,000psi working pressure. It is tested at the factory to15,000 or 22,500 psi. Hydril has selected high qualitymaterials and dimensional fits to ensure greatestreliability. Each valve has three elastomeric sealingareas: between each seat and body, between crankand sleeve and between sleeve and body. The seat

© 2003 Hydril Company LP All Rights Reserved.

Standard Model and NACETrim Kellyguard Valves

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PACKER REPLACEMENT (1F)1. Remove retainer ring (1I) and two retaining screws

(1M) from valve body (1C).2. Slide lower portion of valve from valve body.3. Remove outer backup ring (1H), inner backup ring

(1G), and packer (1F).4. Check metal parts for damage. If in good condition,

install new packer (1F) with square shouldered enddown (toward ball). Do not oil or grease packer.

5. Install inner and outer backup rings (1H and 1G).6. Slide lower portion of valve into valve body by

hand. Install two retaining screws (1M) into valvebody (1C). Ensure that screws are fully seated ingroove on outside of ball seat (1B).

7. Install retainer ring (1I) over two retaining screws(1M) so that ring fits into slots on screws.

VALVE REPLACEMENT (1N)1. Remove set screw (1N) from ball cage (1A).2. Unscrew and remove ball cage (1A) from ball seat

(1B).3. Remove ball (1L) and ball spring (1K).4. Inspect ball seat to ensure good sealing surface.

Repair if not smooth before replacing ball andspring.

5. Replace and tighten ball cage onto ball seat.6. Install set screw (1N) into ball cage (1A).

Ensure that screw is fully seated in groove on ball seat (1B).

SLIP DISASSEMBLY / ASSEMBLY (1E)1. Unscrew and remove slip nut (1D) from valve body (1C).2. Remove slip (1E) and slip spring (1J).3. Clean and inspect disassembled parts. Replace

any parts that are worn or damaged.4. Lubricate surfaces with light grease.5. Install slip spring (1J) and slip (1E).6. Install slip nut (1D).

LANDING SUB DISASSEMBLY/ ASSEMBLY (2-9)1. Remove the retaining ring (6) and the retainer ring

(5) from the upper split ring (4).2. Remove the upper split ring (4) from the sub body (2).3. Remove the landing sleeve (3).4. Remove the O-ring (7) from the landing sleeve.5. Remove the O-ring (8) and back up rings (9) from

the sub body.6. Clean and inspect disassembled parts that are

worn or damaged.

7. Lubricate surfaces with light grease.8. Install the O-ring (8) and back up rings (9) in the

ring groove in the sub body.9. Install the O-ring (7) into the landing sleeve (3)10. Install the landing sleeve (3).11. Install the upper split ring (4) into the sub body (2).12. Install the retainer ring (5) and the retaining ring (6)

into the upper split ring (4).

CHECKGUARD VALVE STORAGEAt the conclusion of each well or prior to placing thevalve in storage for even a brief period, it isrecommended that the Checkguard valve bedisassembled, cleaned, inspected, lubricated thor-oughly with non-petroleum base oil such as castor oilor silicon oil, and reassemble. Do not lubricate packer.Replacement of worn packer, seal rings and otherparts can be made conveniently at this time.

Checkguard Valve Maintenance

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RetrievingTool

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seals are O-rings with backup rings on each side.The crank seal is a "T" with backup rings on eachside. The sleeve seal is an O-ring with backup ringson each side.

The standard Kellyguard valve is intended fornormal drilling environments and those describedin NACE MR0175, section 11, which states: "Thedrilling environment is controlled by maintainingdrilling fluid hydrostatic head and fluid density tominimize formation fluid in-flow and by the use of oneor more of the following: 1) Maintenance of pH 10 orhigher to neutralize H2S in the drilled formation, 2)

use of chemical sulfide scavengers, and 3) use of adrilling fluid in which oil is the continuous phase."This configuration is designed for operatingpressures of 10,000 or 15,000 psi.

The NACE Trim Kellyguard valve is intended fornormal and corrosive drilling environments andlimited exposure to H2S. The limiting factors for H2Sexposure includes H2S concentration, pH, time, andtemperature. This configuration uses a standardKellyguard valve body and NACE compliant internalparts and is rated for 10,000 psi operating pressure.

Standard Model and NACE TrimKellyguard Valves

Cutaway ViewThese are cutaway views of the valve in the closed position. Hydriloffers Kellyguard: standard and NACE Trim models. In the HydrilNACE Trim, the internal parts only are NACE compatible.

Contact your Hydril representative for more information regarding Hydril Kellyguard

valves suitable for H2S sour gas service.

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Checkguard Valve Assembly Parts

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ITEM DESCRIPTION QTY NO. 27 NO. 35 NO. 43 NO. 48

2 SUB BODY 1

**3 LANDING SLEEVE 1 3127095 3125119 3126392 3127117

4 SPLIT RING 1 3131099 3131101 3131103 3131105

5 RING RETAINER 1 3131150 3131152 3131154 3131156

**6 RING RETAINER-SPIRAL 1 1920003-231 1900149-148 1900149-159 1900149-161

*7 QUAD RING 1 1921173-230 1921173-234 1921173-240 1921173-244

*8 O RING 1 1900004-233 1900004-340 1900004-346 1900004-349

*9 BACKUP RING 2 1920069-233 1920069-340 1920069-346 1920069-349

** SEAL KIT 3133149 3133148 3133147 3126357-SK

REPAIR KIT 3133152 3133151 3133150 3126357-RK

LANDING SUB ASSEMBLY

*Included in Seal Kit**Included in Repair Kit

ITEM DESCRIPTION QTY NO. 27 NO. 35 NO. 43 NO. 48

1A CAGE, BALL 1 3132109 3132108 3132107 3131853

***1B SEAT, BALL 1 3127085 3126408 3126450 3127110

1C BODY 1 3126367 3125115 3126588 3127112

1D NUT 1 3127090 3125116 3126586 3127113

1E SLIP 1 3127036 3125117 3126587 3127052

***1F PACKER 1 3126334 3125118 3126397 3126563

***1G BACKUP RING, INNER 1 3127092 3126560 3126590 3127114

***1H BACKUP RING, OUTER 1 3127093 3126561 3126589 3127115

1I RETAINING RING 1 3126579-2 3126579-3 3126579-4 3126579-5

1J SPRING, UPPER 1 3126660 3126516 3126518 3126520

***1K SPRING, VALVE 1 3126515 3126517 3126519 3126521

***1L BALL 1 1900754-2 1900754-3 1900754-4 1900754-5

1M RETAINING SCREW 2 3125122-2 3125122-3 3125122-3 3125122-3

1N SET SCREW 1 1900755-0603 1900755-0604 1900755-0604 1900755-0604

REPAIR KIT 3133165 3133166 3133167 3133168

CHECK VALVE ASSEMBLY

RETRIEVAL TOOL (Not shown in this illustration)

***Included in Repair Kit

ITEM DESCRIPTION QTY NO. 27 NO. 35 NO. 43 NO. 48

RETRIEVAL TOOL 1 1007225 1007425 1004625 1007725

Operational Advantages and Durable ComponentsResult in Low Cost of Ownership

Hydril designed and developed theoriginal one piece Kellyguard valveto fit the full range of kelly valveapplications, and set the standardfor the industry. The Kellyguardvalve can serve as an upper kellycock, top drive kelly cock, lowerkelly cock, drill pipe safety valve,and mud saver. Minimum torque isneeded to open the valve.

Abrasion-Resistant Metal-to-Metal Seals are Effective in Lowor High Pressure. The sealingsurfaces on the ball and seats aremetal-to-metal providing reliablesealing from low to high pressure.

10,000 or 15,000 psi ProtectionKellyguard valves have a one piececompact body for easy handlingand provide protection from 10,000 or 15,000 psi. Formaximum safety, Hydril tests all bodies at 1 1/2 timesrated working pressure.

Pressure Balancing Allows EasyOpening. The Kellyguard valve iseasily opened, even while sealingpressure. Operating torque isminimized by balancing pressures,above and below the ball. Pressureapplied to the top of the ballequalizes well pressure acting onthe ball from below. Because the ballis floating, the downward pressureacting on it reduces the frictionbetween the ball and the seat. Thisreduction in friction decreases thetorque required to rotate the ball,and thus allow opening of the valve.

Designed for Demands of ModernApplications: Stainless Steel,Interchangeable Parts, EasyMaintenance, Long Service Life.Kellyguard valves require little

maintenance. They have few operating parts, allowingeasy repair. No lubrication is necessary except duringassembly. All internal parts are stainless steel forcorrosion resistance and long service life. They areprecisely manufactured for interchangeability, allowingeasy fitting of parts during assembly or repair. Fortraditional applications, Kellyguard valves aremanufactured with enough length on each end to re-cut the connection in case of damaged threads orshoulders. The box and pin connections are cared foras any tool joint with periodic inspections.

Open and close positions are clearly indicated on all models. Astop mechanism ensures full 90 degrees rotation for full openingand closing. Proper positioning of the ball provides excellentperformance and a long service life. Minimum torque is needed toopen the valve because of the pressure balancing function.

Hydril manufacturing procedures meet the highestinternational standards of quality.Hydril's 9001 Certificate attests to its commitment to quality.

Stainless steel ball and seats providemetal-to-metal sealing to ensure pressureintegrity under a wide range of operatingconditions.

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Well pressure creates primaryseal. The primary seal isproduced by forcing the ballagainst the upper seat. Sealingis efficient in high or lowpressure. Under low pressure,the spring-loaded lower seatcreates initial sealing. Highpressure forces the ball againstthe upper seat.

Pressure balancing. With aclosed valve containing wellpressure from below, pressureapplied from above equalizesthe force on the ball. Thispressure balancing significantlyreduces operating torquenecessary to open the valve,even at high pressure.

Downward pressure seal formud saver. Pressure fromabove acts on the ball forcing itagainst the lower seat to providea reliable seal.

Quality control measures are exacting. Here, thestainless steel ball is prepared for inspection. Theprecise shape of the ball is recorded using a Talyrondinspection device. Each and every ball is inspected forsize, finish, and sphericity.

Kellyguard Valve Features

T-shaped seal andbackup rings providea pressure seal andminimize rotationalfriction.

Ball

O-ring seal and back-up rings provide aseal between thebody and sleeve.

Coupler

Operating Crank

Crank DogSleeve

Open Position Closed Position

Checkguard Features

Landing sub indrill string. checkvalve is storedtop side.

The check valvehas landed andlatched in the suband is containingwell pressure. Theball closesagainst upwardpressure.

Check valve haslanded in the sub.it is allowingcirculation ofdrilling fluid.

The retrievingtool is unlatchingand lifting thecheck valve.

Checkguard is a drop-in check valve for the drill string.The check valve remains top side until needed and isretrievable by wire line. It provides the driller a means tocontrol the drill pipe pressure when required. The checkvalve prevents upward flow through the drill pipe, butallows fluid to be pumped downward to circulate thewell.

15,000 psi Working Pressure

Checkguard seals up to 15,000 psi working pressure;yet it is lightweight and easily handled.

Maximized Flow Area

Downward flow areas are maximized, allowing high flowcapacity and long life.

Installed As Needed

The check valve remains on the drill floor until it isneeded. Many downhole valves are part of the drillstring and are constantly subject to abrasive wear. This

wear results in frequent replacement of valves and canprevent valve closure when needed. Checkguard is notexposed to premature deterioration. Only the landingsub is installed as the drill string is run. When control isneeded, the check valve is pumped down the drill stringwhere it latches automatically in the landing sub.

Wire Line Retrieved

Since the check valve can be wire line retrieved, iteliminates the need to trip the drill string for retrieval.Yetretrieval can also be accomplished after tripping out thedrill string.

Positive Closure

Traveling down the drill string, the check valve lands onthe landing sub sleeve and latches positively into place.The replaceable landing sleeve has recessed areas intowhich the check valve packer seals. Upward pressure iscontained by the packer and ball.

Kellyguard valves feature a replaceable operatingcrank sleeve. This sleeve protects the body fromunnecessary wear to extend life and reduce costs. Thecrank operates inside the sleeve and is coated toreduce friction. The coating decreases torque and wearbetween the bearing surfaces. The sleeve also has apositive stop mechanism so the crank turns 90 degreesfor full opening and closing. Operation is easy with thehex-operating wrench.

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ES Kellyguard Sizes Engineering Data

3 1 3/4 53 1/2 NC31 (2 7/8 IF) 4.25 16.50 3132183-1 3132185-1 3132184-1

3 1 3/4 69 1/2 NC38 (3 1/2 IF) 4.25 16.06 3132183-2 3132185-2 3132184-2

3 1 3/4 59 1/2 3 1/2 EUE 8R 4.25 15.50 3132183-3 3132185-3 3132184-3

3 1 3/4 59 1/2 2 7/8 EUE 8R 4.25 16.60 3132183-4 3132185-4 3132184-4

3 1 3/4 69 1/2 WT38 4.75 16.50 3132183-5 3132185-5 3132184-5

3 1 3/4 1/2 NC38 (3 1/2 IF) 4.75 25.00 3132183-6 3132185-6 3132184-6

3 1 3/4 1/2 XT39 5.00 15.51 3132184-7

3 1/2 2 1/4 80 5/8 NC38 (3 1/2 IF) 5.38 18.06 3132172-1 3132174-1 3132173-1

3 1/2 2 1/4 115 5/8 4 1/2 FH 6.13 18.06 3132172-2 3132174-2 3132173-2

3 1/2 2 1/4 135 5/8 NC50 (4 1/2 IF) 6.38 17.56 3132172-3 3132174-3 3132173-3

3 1/2 2 1/4 120 5/8 NC46 (4 IF) 6.13 17.56 3132172-4 3132174-4 3132173-4

3 1/2 2 1/4 115 5/8 4 1/2 REG LH 6.13 17.82 3132172-5 3132174-5 3132173-5

3 1/2 2 1/4 80 5/8 NC40 (4" FH) 5.38 17.56 3132172-6 3132174-6 3132173-6

3 1/2 2 1/4 5/8 NC38 SHORT 5.38 15.50 3132172-9 3132174-11

3 1/2 2 1/4 5/8 WT 40 5.38 18.06 3132173-14

3 1/2 2 1/4 5/8 DS50 6.38 17.56 3132173-11

4 1/4 2 13/16 130 7/8 NC46 (4 IF) 6.63 20.06 3132166-1 3132168-1 3132163-1

4 1/4 2 13/16 134 7/8 NC50 (4 1/2 IF) 6.63 20.06 3132166-2 3132168-2 3132163-2

4 1/4 2 13/16 228 7/8 5 1/2 IF 7.75 19.56 3132166-3 3132168-3 3132163-3

4 1/4 2 13/16 215 7/8 6 5/8 REG LH 7.75 19.56 3132166-4 3132168-4 3132163-4

4 1/4 2 13/16 117 7/8 NC50 SHORT 6.63 15.75 3132166-5 3132168-5 3132163-5

4 1/4 2 13/16 7/8 NC50 LONG 6.63 33.06 3132166-6 3132168-6 3132163-6

4 1/4 2 13/16 7/8 HT55 (400) 7.00 20.06 3133038

5 1/4 3 1/16 180 7/8 NC50 RH 7.38 20.06 3132169-1 3132171-1 3132170-1

5 1/4 3 1/16 192 7/8 5 1/2 FH 7.38 19.56 3132169-2 3132171-2 3132170-2

5 1/4 3 1/16 188 7/8 NC56 7.38 19.56 3132169-3 3132171-3 3132170-3

5 1/4 3 1/16 218 7/8 5 1/2 IF 7.75 19.56 3132169-4 3132171-4 3132170-4

5 1/4 3 1/16 218 7/8 6 5/8 REG LH 7.75 19.56 3132169-5 3132171-5 3132170-5

5 1/4 3 1/16 7/8 6 5/8 REG RH 7.88 19.56 3132169-6 3132171-6 3132170-6

5 1/4 3 1/16 140 7/8 7.38 15.81 3132169-7 3132171-7 3132170-7

5 1/4 3 1/16 205 7/8 6 5/8 FH 8.00 19.56 3132169-8

5 1/4 3 1/16 270 7/8 7 5/8 REG RH 8.63 16.56 3132169-9 3132170-10

5 1/4 3 1/16 7/8 7.38 19.56 3132170-14

5 1/4 3 1/16 7/8 XT57 7.38 16.25 3132170-15

Valve HexSize Wrench

10,000 psi 10,000 psi NACE Trim 15,000 psi

inches inches lbs. inches inches inches

To Select correct Checkguard valve determine:1. Smallest bore in drill string through which the check valve must pass. 2. Landing sub connection size and type.3. Outside diameter of mating tool joints.

15,000 psi NACE TRIM CHECKGUARD CHECK VALVE LANDING SUB RETRIEVAL TOOLASSEMBLY (VALVE, SUB & TOOL)CHK L-SUB END ASSEMBLY O.D. BORE WT PART NO. O.D. BORE LENGTH WT PART NO. WT PART NO.NO. CONNECTION PART NO. inches inches lbs. inches inches inches lbs.

#27 NC 31 (2 7/8 IF) 3126321-01 1 11/16 5/8 5 3126348 4 1/8 1 5/8 36 105 3126354-1 8 1007225

NC 38 (3 1/2 IF) 3126321-02 4 3/4 3126354-2

WT 38 3126321-03 5 1/8 3126354-3

XT 39 3126321-04 5 3126354-4

#35 NC 38 (3 1/2 IF) 3126322-01 2 3/16 7/8 13 3126349 4 3/4 2 1/8 36 120 3126355-1 14 1007425

4 1/2 FH 3126322-02 6 3126355-2

NC 46 (IF) 3126322-03 6 1/4 3126355-3

NC 50 (4 1/2 IF) 3126322-04 6 3/8 3126355-4

4 1/2 RRH 3126322-05 5 3/4 3126355-5

4 1/2 RRHBXB 3126322-06 5 3/4 3126355-6

3 1/2 EUE 3126322-07 5 3126355-10

4 1/2 NVAM 3126322-09 5 3126355-12

WT40 3126322-15 5 1/2 3126355-15

WT40 box x XT39 pin 3126322-16 5 3/8 3126355-16

WT40 box x HT38 pin 3126322-17 5 1/4 3126357-17

#43 NC 50 (4 1/2 IF) 3126323-01 2 11/16 1 3/8 18 3126350 6 1/8 2 5/8 36 230 3126356-1 21 1004625

NC 50 (4 1/2 IF) 3126323-02 6 1/4 3126356-2

NC 50 (4 1/2 IF) 3126323-03 6 3/8 3126356-3

NC 50 (4 1/2 IF) 3126323-04 6 1/2 3126356-4

NC 46 (4 IF) 3126323-05 6 1/8 3126356-5

NC 46 (4 IF) 3126323-06 6 1/4 3126356-6

NC 46 (4 IF) 3126323-07 6 3/8 3126356-7

NC 46 (4 IF) 3126323-08 6 1/2 3126356-8

5 1/2 FH 3126323-10 7 3126356-10

NC 50 (4 1/2 IF) 3126323-19 6 5/8 3126356-19

#48 NC 50 (4 1/2 IF) 3126324-01 3 1 11/16 23 3126351 6 3/8 2 15/16 36 220 3126357-1 28 1007725

5 1/2 FH 3126324-02 7 3126357-2

6 5/8 RRH 3126324-03 7 3/4 3126357-3

6 5/8 RRH BXB 3126324-04 7 3/4 3126357-4

6 5/8 FH 3126324-05 8 3126357-5

6 5/8 RRH 3126324-06 8 3126357-6

NC 50 (4 1/2 IF) 3126324-08 6 5/8 3126357-8

6 5/8 FH 3126324-11 8 1/4 3126357-11

6 5/8 FH 3126324-12 8 1/2 3126357-12

WT 56 3126324-14 7 3/4 3126357-14

XT57 3126324-16 8 3126357-16

WT50 box X HT55 pin 3126324-19 7 1/8 3126357-19

XT57 3126324-20 7 3/8 3126357-20

XT57 box X HT55 pin 3126324-21 7 3126357-21

Checkguard Valve Selection

5 1/2 FH DSTJpin X WT50 box

6 5/8 REG RHSHORT

Part Number Part Number Part Number

ID OD LengthWeightConnection

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**The Torque values listed are upper limits not to be exceeded.The correct make-up torque for a specific Kellyguard/Drill pipeconnection will be the make-uptorque recommended in API Spec RP 7G for the Drill Pipe/ToolJoint combination or the value listed above, which ever is lower.

Kellyguard Application Data

4-1/4" – 10,000 PSI W.P. KELLYGUARD* VALVE

Most Hydril Kellyguard end connections can be re-cut. Contact yourHydril representative for more information.

INTERCHANGEABILITY OF ROTARY SHOULDERCONNECTIONS

APICONNECTION NC26 NC31 NC38 NC40 NC46 NC50

INTERNAL FLUSH 2 3/8 2 7/8 3 1/2 4 4 1/2

FULL HOLE 4

EXTRA HOLE 3 1/2 4 1/2 5

WIDE OPEN 3 1/2 4 4 1/2

SLIM HOLE 2 7/8 3 1/2 4 4 1/2

MAKE-UP TORQUE FORKELLYGUARD CONNECTION

MAXIMUMVALVE MAKE-UP MAKE-UPSIZE TORQUE TORQUE(IN.) CONNECTION (FT.-LBS)* (FT.-LBS)**

3 NC 31 (2 7/8 API IF) 5,900 8,700

NC 38 (3 1/2 API IF) 9,100 17,000

3 1/2 NC 38 (3 1/2 API IF) 9,100 13,200

NC 46 (4 API IF) 17,000 28,900

4 1/2 FH 17,400 26,200

NC 50 (4 1/2 API IF) 18,900 39,300

4 1/2 API REG LH 20,300 22,700

4 1/4 NC 46 (4 API IF) 17,000 26,900

NC 50 (4 1/2 API IF) 18,900 34,100

6 5/8 API REG LH 41,700 56,700

5 1/4 NC 50 (4 1/2 API IF) 18,900 32,700

5 1/2 FH 28,000 47,800

6 5/8 API REG LH 41,700 54,000

The graph represents torque as a function of pressure.The line identified as (A) depicts torque required to open thevalve with 0 pressure above the ball. Although this isinfrequently done, it is of interest when compared to othermanufacturer’s valves. Line (B) depicts the balance condition,i.e. pressure above and below ball are approximately equal.Note the reduction in torque requirement.*Graphs for other size and Kellyguard valves are similar.

Checkguard Valve Selection

RetrievingToolFitted with a 5/8 APIsucker rodconnection(15/16-10UNS) forconnection to wireline.

Check ValveUse the largest sizecheck valve that canpass through the drillstring to the landingsub to provide thelargest flow area forcirculation. Determinethe smallest insidediameter through whichthe check valve mustpass. Verify kelly, lowerkelly valve, tool joints,and sometimes drillcollars. The check valveOD must be at least1/16 inch smaller thanthis inside diameter.Once smallest bore is determined, readacross table for correct valve size.

Landing SubAfter the correctsize check valve is determined,choose a matchinglanding sub. Selecta landing sub with threadedconnections andoutside diametercompatible with themating tool joints ofthe drill string.

Hex Wrench Size,across flats

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1 1* Lower Seat 3132111 3132155 3132111

2 1* Ball 1007483 3132231 1007483

3 1* Upper Seat 3132085 3132159 3132085

4 1 Crank 3131113 3131118 3131113

5 1 Sleeve 3131096 3131169 3131096

6 1 Lower Split Ring 3131059 3131060 3131059

7 1 Upper Split Ring 3131098 3131099 3131098

8 1 Retainer Ring 3131149 3131150 3131149

9 1 Spiral Retainer Ring 1920003-231 1920003-231 1920003-231

10 1* Seal Kit 1007482 1007178 1007482

11 1* Lower Seat Spring 1004295-5 1007685-3 1004295-5

12 1* Coupler 3131175 3131176 3131175

Repair Kit 3132370 3132179 3132370

1 1* Lower Seat 3132113 3132156 3132113

2 1* Ball 1004583 3132232 1004583

3 1* Upper Seat 3132088 3132160 3132088

4 1 Crank 3131111 3131117 3131111

5 1 Sleeve 3131094 3131095 3131094

6 1 Lower Split Ring 3131061 3131062 3131061

7 1 Upper Split Ring 3131100 3131101 3131100

8 1 Retainer Ring 3131151 3131152 3131151

9 1 Spiral Retainer Ring 1920003-287 1920003-287 1920003-287

10 1* Seal Kit 1006889 1007278 1006889

11 1* Lower Seat Spring 1004295-3 1007685-2 1004295-3

12 1* Coupler 3131173 3131172 3131173

* Repair Kit 3132371 3132180 3132371

1 1* Lower Seat 3132115 3132157 3132115

2 1* Ball 1001893 3132233 1001893

3 1* Upper Seat 3132091 3132161 3132091

4 1 Crank 3131090 3131115 3131090

5 1 Sleeve 3131136 3131091 3131136

6 1 Lower Split Ring 3131063 3131064 3131063

7 1 Upper Split Ring 3131102 3131103 3131102

8 1 Retainer Ring 3131153 3131154 3131153

9 1 Spiral Retainer Ring 1920003-362 1900149-159 1920003-362

10 1* Seal Kit 1004485 1007678 1004485

11 1* Lower Seat Spring 1004295-2 1007685-1 1004295-2

12 1* Coupler 3131170 3131171 3131170

Repair Kit 3132372 3132181 3132372

1 1* Lower Seat 3132118 3132158 3132118

2 1* Ball 3109423 3132234 3109423

3 1* Upper Seat 3132094 3132162 3132094

4 1 Crank 3131090 3131115 3131090

5 1 Sleeve 3131136 3131091 3131136

6 1 Lower Split Ring 3131065 3131066 3131065

7 1 Upper Split Ring 3131104 3131105 3131104

8 1 Retainer Ring 3131155 3131156 3131155

9 1 Spiral Retainer Ring 1920003-387 1900149-161 1920003-387

10 1* Seal Kit 1004486 1007778 1004486

11 1* Lower Seat Spring 1004295-4 1007685-4 1004295-4

12 1* Coupler 3131170 3131171 3131170

Repair Kit 3132373 3132182 3132373

Item No. Qty. Part Name 10M 10M NACE 15M

3

3 1/2

4 1/4

5 1/4

ValveSize

* Included in Repair Kit

Offshore applications -A must for every shear ram application on floating and surface drilling

Drill pipe has beensheared afterCheckguard valvehas been landed in sub.

Checkguard valve in place

Shear / blind ram

Tool joint hangs on pipe ram

The Checkguard valve should be available to close off the drill string bore before shearing thedrill pipe in subsea or surface drilling where shear / blind rams are applied. The check valve ispumped down to the landing sub prior to shearing the drill pipe. Later, reestablishment of wellcontrol will be simplified as the blind rams and annular BOP can be opened withoutexperiencing flow up through the drill pipe.

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Kellyguard Detail View of Parts

Exploded parts view of Hydril Kellyguard Valve

9

8

7

3

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11

Body

4

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Included in item No.10

Included in item No.10

Included in item No.10

Spiral woundretainer ring

Upper splitretainer ring

Lower splitretainer ring

Lower seat

Lower seatspring

Lower O-ringwith backups

Ball

Upper O-ringwith backupsRetainer

ring

Upper seat

OperatingCrank

CrankSleeve

Body

Cutaway view of standard Hydril Kellyguard valve in open position.

The Checkguard drop-in check valve is used in thedrill string. The check valve remains top side untilneeded and is retrievable by wire line. It preventsupward flow through the drill pipe, but allows fluid tobe pumped downward to circulate the well. Thecheck valve provides the driller with a means tocontrol the drill pipe pressures when required.

Installing a Checkguard valve improves wellcontrol significantly. It serves as a check valve to prevent upward flow through the drill string while permitting downward mud pumping or flow from injectors. Latching the check valve into thelanding sub contains the pressure in the drill pipe.

While stripping drill pipe into the hole, checkguardvalves control upward pressure in the drill pipe.

Prior to shearing drill pipe, install the check valveto protect against the release of well pressure.Installation of the check valve simplifies well control,since formation pressures cannot communicate upthe drill string.

While tripping, Checkguard valves contain upwardwell bore pressure in the drill pipe, allowing the topconnection to be open.

Checkguard valves use a spring and ball design.Fluid can be pumped through the valve from the top.But when fluid tries to flow from the bottom to the top,the spring-loaded ball seals it.

New Abrasion Resistant Materials for theCheckguard The ball seat has been improved withthe addition of a Tungsten Carbide coated sealingsurface. A new ceramic ball has been incorporated.These new components are added to increase theabrasion resistance of the valve to mud flow throughit, thus increasing its life.

A large rubber packer provides sealing when fluidattempts to flow around the valve. The tapered bodyengages the packer. The body is driven upward by pressure from below. As the drill string pressure increases, the pressure from below forces a tighter seal.

INSTALLATION AND RETRIEVAL

Install the landing sub in the drill string whiletripping into the hole. Position the landing sub in thelower end of the drill string.

Install the check valve by dropping it into an opentool joint. Connect the kelly and pump the checkvalve into the landing sub. Use the drill pipe safetyKellyguard valve and lower Kellyguard valve ifexcessive back flow exists.

Retrieve the check valve by installing a sinker barabove the retrieving tool and using a wire line. Usenormal wire line procedures. Another way is to trip the drill string and remove the check valvefrom the landing sub with the retrieval tool.

For better operation, ensure the rubber packer is clean and pliable. Check for foreign substancessuch as paint, grease, and dirt on the packer surface.Check for cracking and embrittlement of packer.Never oil the rubber packer. Replace packer ifcondition requires. The check valve should be disassembled, cleaned, and lubricated once it is retrieved from the landing sub after downholeuse. A suitable O-ring lubricant such as castrol oil may be used.The valve should be stored in a protected area, away from UV-rays and other harsh elements, while not in use. This protectsworking part.

Checkguard Valve Applications and Operations

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1. Rotate the ball to the open position.2. Remove the spiral-wound

retaining ring (figure 7-2) and thesolid retaining ring (figure 7-3).

3. Compress the lower seat springwith the assembly tool (figure 7-4)and remove the upper splitretainer ring.

4. Use the assembly tool to pull theupper seat (figure 7-5).

5. Compress the lower seat springand remove the lower splitretainer ring (figure 7-6).

6. Rotate the ball to the closedposition and remove.

7. Press the crank assembly

(sleeve, crank, coupler and seals)into the bore and remove.

8. Remove the lower seat (figure 7-7).

9. Remove upper O-ring and backuprings.

Kellyguard Assembly Procedure

1. Insert the lower seat assembly(seat, seals, and spring) into thebody and pull into place with theassembly tool.

2. Press the crank assembly intothe hole from the bore androtate to closed position.

3. Rotate the ball to a closed

position and insert.4. Install the upper O-ring and

backup rings.5. Install the lower split retainer

ring in the lowest groove.6. Install the upper seat using the

assembly tool.7. Install the upper split retainer

ring and the solid retainer ring.Release the assembly tool.

8. Install the spiral-woundretaining ring.

9. Pressure test the valve. It isready for service.

DISASSEMBLY

ASSEMBLYLubricate All Parts Prior to Assembly.

Figure 7-2

Figure 7-3 Figure 7-4 Figure 7-5 Figure 7-6 Figure 7-7

Figure 7-1AssemblyTool

VALVE ASSEMBLY TOOLSERIES PART NO.

3 - 3 1/2 1006175

4 1/4 - 5 1/4 1005693

6 1/4 3123539

7 1/4 3120299

MAINTENANCE

The Kellyguard valve requires very little maintenance.The box and pin connections should be cared for justas any other tool joint. Periodic inspection ofconnections is suggested.

It should be greased during assembly. The seals in thevalve should be replaced at a regular interval. The typeof service the valve is given will affect the length of timebetween seal changes. If the valve is used with oil-base muds, the seals should be changed more oftenthan with water-base muds. Six to nine months is anormal interval for seal changes under mostconditions. Whenever the valve is disassembled, allelastomeric seals should be changed (see section 5 forassembly-disassembly instructions).

TESTING

1. Rotate ball to open position.2. Install test plug and test cap in box and pin ends.3 Measure torque to close and open valve. Torque

shall be as shown in Table 1.4. Mount valve in the vertical position with the ball

and bleed valve open and fill valve cavity withsoluble oil mixture. Once the system is filled, cyclethe valve five (5) times to bleed the air. Overflow

the system for five (5) seconds and close bleed thevalve.

5. Pressurize valve cavity to rated working pressure.After five (5) minutes at the rated workingpressure, observe crank seal for fluid leakage. Noleakage is allowed.

6. Drop pressure to zero.7. With bleed valve open and system filled, rotate the

ball to the closed position.8. Pressurize the lower valve cavity to the rated

working pressure and allow system to stabilize forfive (5) minutes after system has stabilized. Themaximum allowable pressure drop is 100 psi.

9. Depressurize and drain valve. Torque shall be asshown in Table 1.

10. When all tests are successfully completed, drainall fluid from the valve assembly and blow dry. Filland drain all internal cavities with hydraulic oil.Install thread protectors on ends.

Kellyguard Maintenance and Testing

3 5-25

3 1/2 10-35

4 1/4 15-40

5 1/4 14-45

Table 1

Size Torque (Ft-Lbs)

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1. Rotate the ball to the open position.2. Remove the spiral-wound

retaining ring (figure 7-2) and thesolid retaining ring (figure 7-3).

3. Compress the lower seat springwith the assembly tool (figure 7-4)and remove the upper splitretainer ring.

4. Use the assembly tool to pull theupper seat (figure 7-5).

5. Compress the lower seat springand remove the lower splitretainer ring (figure 7-6).

6. Rotate the ball to the closedposition and remove.

7. Press the crank assembly

(sleeve, crank, coupler and seals)into the bore and remove.

8. Remove the lower seat (figure 7-7).

9. Remove upper O-ring and backuprings.

Kellyguard Assembly Procedure

1. Insert the lower seat assembly(seat, seals, and spring) into thebody and pull into place with theassembly tool.

2. Press the crank assembly intothe hole from the bore androtate to closed position.

3. Rotate the ball to a closed

position and insert.4. Install the upper O-ring and

backup rings.5. Install the lower split retainer

ring in the lowest groove.6. Install the upper seat using the

assembly tool.7. Install the upper split retainer

ring and the solid retainer ring.Release the assembly tool.

8. Install the spiral-woundretaining ring.

9. Pressure test the valve. It isready for service.

DISASSEMBLY

ASSEMBLYLubricate All Parts Prior to Assembly.

Figure 7-2

Figure 7-3 Figure 7-4 Figure 7-5 Figure 7-6 Figure 7-7

Figure 7-1AssemblyTool

VALVE ASSEMBLY TOOLSERIES PART NO.

3 - 3 1/2 1006175

4 1/4 - 5 1/4 1005693

6 1/4 3123539

7 1/4 3120299

MAINTENANCE

The Kellyguard valve requires very little maintenance.The box and pin connections should be cared for justas any other tool joint. Periodic inspection ofconnections is suggested.

It should be greased during assembly. The seals in thevalve should be replaced at a regular interval. The typeof service the valve is given will affect the length of timebetween seal changes. If the valve is used with oil-base muds, the seals should be changed more oftenthan with water-base muds. Six to nine months is anormal interval for seal changes under mostconditions. Whenever the valve is disassembled, allelastomeric seals should be changed (see section 5 forassembly-disassembly instructions).

TESTING

1. Rotate ball to open position.2. Install test plug and test cap in box and pin ends.3 Measure torque to close and open valve. Torque

shall be as shown in Table 1.4. Mount valve in the vertical position with the ball

and bleed valve open and fill valve cavity withsoluble oil mixture. Once the system is filled, cyclethe valve five (5) times to bleed the air. Overflow

the system for five (5) seconds and close bleed thevalve.

5. Pressurize valve cavity to rated working pressure.After five (5) minutes at the rated workingpressure, observe crank seal for fluid leakage. Noleakage is allowed.

6. Drop pressure to zero.7. With bleed valve open and system filled, rotate the

ball to the closed position.8. Pressurize the lower valve cavity to the rated

working pressure and allow system to stabilize forfive (5) minutes after system has stabilized. Themaximum allowable pressure drop is 100 psi.

9. Depressurize and drain valve. Torque shall be asshown in Table 1.

10. When all tests are successfully completed, drainall fluid from the valve assembly and blow dry. Filland drain all internal cavities with hydraulic oil.Install thread protectors on ends.

Kellyguard Maintenance and Testing

3 5-25

3 1/2 10-35

4 1/4 15-40

5 1/4 14-45

Table 1

Size Torque (Ft-Lbs)

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Kellyguard Detail View of Parts

Exploded parts view of Hydril Kellyguard Valve

9

8

7

3

6

2

1

11

Body

4

125

Included in item No.10

Included in item No.10

Included in item No.10

Spiral woundretainer ring

Upper splitretainer ring

Lower splitretainer ring

Lower seat

Lower seatspring

Lower O-ringwith backups

Ball

Upper O-ringwith backupsRetainer

ring

Upper seat

OperatingCrank

CrankSleeve

Body

Cutaway view of standard Hydril Kellyguard valve in open position.

The Checkguard drop-in check valve is used in thedrill string. The check valve remains top side untilneeded and is retrievable by wire line. It preventsupward flow through the drill pipe, but allows fluid tobe pumped downward to circulate the well. Thecheck valve provides the driller with a means tocontrol the drill pipe pressures when required.

Installing a Checkguard valve improves wellcontrol significantly. It serves as a check valve to prevent upward flow through the drill string while permitting downward mud pumping or flow from injectors. Latching the check valve into thelanding sub contains the pressure in the drill pipe.

While stripping drill pipe into the hole, checkguardvalves control upward pressure in the drill pipe.

Prior to shearing drill pipe, install the check valveto protect against the release of well pressure.Installation of the check valve simplifies well control,since formation pressures cannot communicate upthe drill string.

While tripping, Checkguard valves contain upwardwell bore pressure in the drill pipe, allowing the topconnection to be open.

Checkguard valves use a spring and ball design.Fluid can be pumped through the valve from the top.But when fluid tries to flow from the bottom to the top,the spring-loaded ball seals it.

New Abrasion Resistant Materials for theCheckguard The ball seat has been improved withthe addition of a Tungsten Carbide coated sealingsurface. A new ceramic ball has been incorporated.These new components are added to increase theabrasion resistance of the valve to mud flow throughit, thus increasing its life.

A large rubber packer provides sealing when fluidattempts to flow around the valve. The tapered bodyengages the packer. The body is driven upward by pressure from below. As the drill string pressure increases, the pressure from below forces a tighter seal.

INSTALLATION AND RETRIEVAL

Install the landing sub in the drill string whiletripping into the hole. Position the landing sub in thelower end of the drill string.

Install the check valve by dropping it into an opentool joint. Connect the kelly and pump the checkvalve into the landing sub. Use the drill pipe safetyKellyguard valve and lower Kellyguard valve ifexcessive back flow exists.

Retrieve the check valve by installing a sinker barabove the retrieving tool and using a wire line. Usenormal wire line procedures. Another way is to trip the drill string and remove the check valvefrom the landing sub with the retrieval tool.

For better operation, ensure the rubber packer is clean and pliable. Check for foreign substancessuch as paint, grease, and dirt on the packer surface.Check for cracking and embrittlement of packer.Never oil the rubber packer. Replace packer ifcondition requires. The check valve should be disassembled, cleaned, and lubricated once it is retrieved from the landing sub after downholeuse. A suitable O-ring lubricant such as castrol oil may be used.The valve should be stored in a protected area, away from UV-rays and other harsh elements, while not in use. This protectsworking part.

Checkguard Valve Applications and Operations

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1 1* Lower Seat 3132111 3132155 3132111

2 1* Ball 1007483 3132231 1007483

3 1* Upper Seat 3132085 3132159 3132085

4 1 Crank 3131113 3131118 3131113

5 1 Sleeve 3131096 3131169 3131096

6 1 Lower Split Ring 3131059 3131060 3131059

7 1 Upper Split Ring 3131098 3131099 3131098

8 1 Retainer Ring 3131149 3131150 3131149

9 1 Spiral Retainer Ring 1920003-231 1920003-231 1920003-231

10 1* Seal Kit 1007482 1007178 1007482

11 1* Lower Seat Spring 1004295-5 1007685-3 1004295-5

12 1* Coupler 3131175 3131176 3131175

Repair Kit 3132370 3132179 3132370

1 1* Lower Seat 3132113 3132156 3132113

2 1* Ball 1004583 3132232 1004583

3 1* Upper Seat 3132088 3132160 3132088

4 1 Crank 3131111 3131117 3131111

5 1 Sleeve 3131094 3131095 3131094

6 1 Lower Split Ring 3131061 3131062 3131061

7 1 Upper Split Ring 3131100 3131101 3131100

8 1 Retainer Ring 3131151 3131152 3131151

9 1 Spiral Retainer Ring 1920003-287 1920003-287 1920003-287

10 1* Seal Kit 1006889 1007278 1006889

11 1* Lower Seat Spring 1004295-3 1007685-2 1004295-3

12 1* Coupler 3131173 3131172 3131173

* Repair Kit 3132371 3132180 3132371

1 1* Lower Seat 3132115 3132157 3132115

2 1* Ball 1001893 3132233 1001893

3 1* Upper Seat 3132091 3132161 3132091

4 1 Crank 3131090 3131115 3131090

5 1 Sleeve 3131136 3131091 3131136

6 1 Lower Split Ring 3131063 3131064 3131063

7 1 Upper Split Ring 3131102 3131103 3131102

8 1 Retainer Ring 3131153 3131154 3131153

9 1 Spiral Retainer Ring 1920003-362 1900149-159 1920003-362

10 1* Seal Kit 1004485 1007678 1004485

11 1* Lower Seat Spring 1004295-2 1007685-1 1004295-2

12 1* Coupler 3131170 3131171 3131170

Repair Kit 3132372 3132181 3132372

1 1* Lower Seat 3132118 3132158 3132118

2 1* Ball 3109423 3132234 3109423

3 1* Upper Seat 3132094 3132162 3132094

4 1 Crank 3131090 3131115 3131090

5 1 Sleeve 3131136 3131091 3131136

6 1 Lower Split Ring 3131065 3131066 3131065

7 1 Upper Split Ring 3131104 3131105 3131104

8 1 Retainer Ring 3131155 3131156 3131155

9 1 Spiral Retainer Ring 1920003-387 1900149-161 1920003-387

10 1* Seal Kit 1004486 1007778 1004486

11 1* Lower Seat Spring 1004295-4 1007685-4 1004295-4

12 1* Coupler 3131170 3131171 3131170

Repair Kit 3132373 3132182 3132373

Item No. Qty. Part Name 10M 10M NACE 15M

3

3 1/2

4 1/4

5 1/4

ValveSize

* Included in Repair Kit

Offshore applications -A must for every shear ram application on floating and surface drilling

Drill pipe has beensheared afterCheckguard valvehas been landed in sub.

Checkguard valve in place

Shear / blind ram

Tool joint hangs on pipe ram

The Checkguard valve should be available to close off the drill string bore before shearing thedrill pipe in subsea or surface drilling where shear / blind rams are applied. The check valve ispumped down to the landing sub prior to shearing the drill pipe. Later, reestablishment of wellcontrol will be simplified as the blind rams and annular BOP can be opened withoutexperiencing flow up through the drill pipe.

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**The Torque values listed are upper limits not to be exceeded.The correct make-up torque for a specific Kellyguard/Drill pipeconnection will be the make-uptorque recommended in API Spec RP 7G for the Drill Pipe/ToolJoint combination or the value listed above, which ever is lower.

Kellyguard Application Data

4-1/4" – 10,000 PSI W.P. KELLYGUARD* VALVE

Most Hydril Kellyguard end connections can be re-cut. Contact yourHydril representative for more information.

INTERCHANGEABILITY OF ROTARY SHOULDERCONNECTIONS

APICONNECTION NC26 NC31 NC38 NC40 NC46 NC50

INTERNAL FLUSH 2 3/8 2 7/8 3 1/2 4 4 1/2

FULL HOLE 4

EXTRA HOLE 3 1/2 4 1/2 5

WIDE OPEN 3 1/2 4 4 1/2

SLIM HOLE 2 7/8 3 1/2 4 4 1/2

MAKE-UP TORQUE FORKELLYGUARD CONNECTION

MAXIMUMVALVE MAKE-UP MAKE-UPSIZE TORQUE TORQUE(IN.) CONNECTION (FT.-LBS)* (FT.-LBS)**

3 NC 31 (2 7/8 API IF) 5,900 8,700

NC 38 (3 1/2 API IF) 9,100 17,000

3 1/2 NC 38 (3 1/2 API IF) 9,100 13,200

NC 46 (4 API IF) 17,000 28,900

4 1/2 FH 17,400 26,200

NC 50 (4 1/2 API IF) 18,900 39,300

4 1/2 API REG LH 20,300 22,700

4 1/4 NC 46 (4 API IF) 17,000 26,900

NC 50 (4 1/2 API IF) 18,900 34,100

6 5/8 API REG LH 41,700 56,700

5 1/4 NC 50 (4 1/2 API IF) 18,900 32,700

5 1/2 FH 28,000 47,800

6 5/8 API REG LH 41,700 54,000

The graph represents torque as a function of pressure.The line identified as (A) depicts torque required to open thevalve with 0 pressure above the ball. Although this isinfrequently done, it is of interest when compared to othermanufacturer’s valves. Line (B) depicts the balance condition,i.e. pressure above and below ball are approximately equal.Note the reduction in torque requirement.*Graphs for other size and Kellyguard valves are similar.

Checkguard Valve Selection

RetrievingToolFitted with a 5/8 APIsucker rodconnection(15/16-10UNS) forconnection to wireline.

Check ValveUse the largest sizecheck valve that canpass through the drillstring to the landingsub to provide thelargest flow area forcirculation. Determinethe smallest insidediameter through whichthe check valve mustpass. Verify kelly, lowerkelly valve, tool joints,and sometimes drillcollars. The check valveOD must be at least1/16 inch smaller thanthis inside diameter.Once smallest bore is determined, readacross table for correct valve size.

Landing SubAfter the correctsize check valve is determined,choose a matchinglanding sub. Selecta landing sub with threadedconnections andoutside diametercompatible with themating tool joints ofthe drill string.

Hex Wrench Size,across flats

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3 1 3/4 53 1/2 NC31 (2 7/8 IF) 4.25 16.50 3132183-1 3132185-1 3132184-1

3 1 3/4 69 1/2 NC38 (3 1/2 IF) 4.25 16.06 3132183-2 3132185-2 3132184-2

3 1 3/4 59 1/2 3 1/2 EUE 8R 4.25 15.50 3132183-3 3132185-3 3132184-3

3 1 3/4 59 1/2 2 7/8 EUE 8R 4.25 16.60 3132183-4 3132185-4 3132184-4

3 1 3/4 69 1/2 WT38 4.75 16.50 3132183-5 3132185-5 3132184-5

3 1 3/4 1/2 NC38 (3 1/2 IF) 4.75 25.00 3132183-6 3132185-6 3132184-6

3 1 3/4 1/2 XT39 5.00 15.51 3132184-7

3 1/2 2 1/4 80 5/8 NC38 (3 1/2 IF) 5.38 18.06 3132172-1 3132174-1 3132173-1

3 1/2 2 1/4 115 5/8 4 1/2 FH 6.13 18.06 3132172-2 3132174-2 3132173-2

3 1/2 2 1/4 135 5/8 NC50 (4 1/2 IF) 6.38 17.56 3132172-3 3132174-3 3132173-3

3 1/2 2 1/4 120 5/8 NC46 (4 IF) 6.13 17.56 3132172-4 3132174-4 3132173-4

3 1/2 2 1/4 115 5/8 4 1/2 REG LH 6.13 17.82 3132172-5 3132174-5 3132173-5

3 1/2 2 1/4 80 5/8 NC40 (4" FH) 5.38 17.56 3132172-6 3132174-6 3132173-6

3 1/2 2 1/4 5/8 NC38 SHORT 5.38 15.50 3132172-9 3132174-11

3 1/2 2 1/4 5/8 WT 40 5.38 18.06 3132173-14

3 1/2 2 1/4 5/8 DS50 6.38 17.56 3132173-11

4 1/4 2 13/16 130 7/8 NC46 (4 IF) 6.63 20.06 3132166-1 3132168-1 3132163-1

4 1/4 2 13/16 134 7/8 NC50 (4 1/2 IF) 6.63 20.06 3132166-2 3132168-2 3132163-2

4 1/4 2 13/16 228 7/8 5 1/2 IF 7.75 19.56 3132166-3 3132168-3 3132163-3

4 1/4 2 13/16 215 7/8 6 5/8 REG LH 7.75 19.56 3132166-4 3132168-4 3132163-4

4 1/4 2 13/16 117 7/8 NC50 SHORT 6.63 15.75 3132166-5 3132168-5 3132163-5

4 1/4 2 13/16 7/8 NC50 LONG 6.63 33.06 3132166-6 3132168-6 3132163-6

4 1/4 2 13/16 7/8 HT55 (400) 7.00 20.06 3133038

5 1/4 3 1/16 180 7/8 NC50 RH 7.38 20.06 3132169-1 3132171-1 3132170-1

5 1/4 3 1/16 192 7/8 5 1/2 FH 7.38 19.56 3132169-2 3132171-2 3132170-2

5 1/4 3 1/16 188 7/8 NC56 7.38 19.56 3132169-3 3132171-3 3132170-3

5 1/4 3 1/16 218 7/8 5 1/2 IF 7.75 19.56 3132169-4 3132171-4 3132170-4

5 1/4 3 1/16 218 7/8 6 5/8 REG LH 7.75 19.56 3132169-5 3132171-5 3132170-5

5 1/4 3 1/16 7/8 6 5/8 REG RH 7.88 19.56 3132169-6 3132171-6 3132170-6

5 1/4 3 1/16 140 7/8 7.38 15.81 3132169-7 3132171-7 3132170-7

5 1/4 3 1/16 205 7/8 6 5/8 FH 8.00 19.56 3132169-8

5 1/4 3 1/16 270 7/8 7 5/8 REG RH 8.63 16.56 3132169-9 3132170-10

5 1/4 3 1/16 7/8 7.38 19.56 3132170-14

5 1/4 3 1/16 7/8 XT57 7.38 16.25 3132170-15

Valve HexSize Wrench

10,000 psi 10,000 psi NACE Trim 15,000 psi

inches inches lbs. inches inches inches

To Select correct Checkguard valve determine:1. Smallest bore in drill string through which the check valve must pass. 2. Landing sub connection size and type.3. Outside diameter of mating tool joints.

15,000 psi NACE TRIM CHECKGUARD CHECK VALVE LANDING SUB RETRIEVAL TOOLASSEMBLY (VALVE, SUB & TOOL)CHK L-SUB END ASSEMBLY O.D. BORE WT PART NO. O.D. BORE LENGTH WT PART NO. WT PART NO.NO. CONNECTION PART NO. inches inches lbs. inches inches inches lbs.

#27 NC 31 (2 7/8 IF) 3126321-01 1 11/16 5/8 5 3126348 4 1/8 1 5/8 36 105 3126354-1 8 1007225

NC 38 (3 1/2 IF) 3126321-02 4 3/4 3126354-2

WT 38 3126321-03 5 1/8 3126354-3

XT 39 3126321-04 5 3126354-4

#35 NC 38 (3 1/2 IF) 3126322-01 2 3/16 7/8 13 3126349 4 3/4 2 1/8 36 120 3126355-1 14 1007425

4 1/2 FH 3126322-02 6 3126355-2

NC 46 (IF) 3126322-03 6 1/4 3126355-3

NC 50 (4 1/2 IF) 3126322-04 6 3/8 3126355-4

4 1/2 RRH 3126322-05 5 3/4 3126355-5

4 1/2 RRHBXB 3126322-06 5 3/4 3126355-6

3 1/2 EUE 3126322-07 5 3126355-10

4 1/2 NVAM 3126322-09 5 3126355-12

WT40 3126322-15 5 1/2 3126355-15

WT40 box x XT39 pin 3126322-16 5 3/8 3126355-16

WT40 box x HT38 pin 3126322-17 5 1/4 3126357-17

#43 NC 50 (4 1/2 IF) 3126323-01 2 11/16 1 3/8 18 3126350 6 1/8 2 5/8 36 230 3126356-1 21 1004625

NC 50 (4 1/2 IF) 3126323-02 6 1/4 3126356-2

NC 50 (4 1/2 IF) 3126323-03 6 3/8 3126356-3

NC 50 (4 1/2 IF) 3126323-04 6 1/2 3126356-4

NC 46 (4 IF) 3126323-05 6 1/8 3126356-5

NC 46 (4 IF) 3126323-06 6 1/4 3126356-6

NC 46 (4 IF) 3126323-07 6 3/8 3126356-7

NC 46 (4 IF) 3126323-08 6 1/2 3126356-8

5 1/2 FH 3126323-10 7 3126356-10

NC 50 (4 1/2 IF) 3126323-19 6 5/8 3126356-19

#48 NC 50 (4 1/2 IF) 3126324-01 3 1 11/16 23 3126351 6 3/8 2 15/16 36 220 3126357-1 28 1007725

5 1/2 FH 3126324-02 7 3126357-2

6 5/8 RRH 3126324-03 7 3/4 3126357-3

6 5/8 RRH BXB 3126324-04 7 3/4 3126357-4

6 5/8 FH 3126324-05 8 3126357-5

6 5/8 RRH 3126324-06 8 3126357-6

NC 50 (4 1/2 IF) 3126324-08 6 5/8 3126357-8

6 5/8 FH 3126324-11 8 1/4 3126357-11

6 5/8 FH 3126324-12 8 1/2 3126357-12

WT 56 3126324-14 7 3/4 3126357-14

XT57 3126324-16 8 3126357-16

WT50 box X HT55 pin 3126324-19 7 1/8 3126357-19

XT57 3126324-20 7 3/8 3126357-20

XT57 box X HT55 pin 3126324-21 7 3126357-21

Checkguard Valve Selection

5 1/2 FH DSTJpin X WT50 box

6 5/8 REG RHSHORT

Part Number Part Number Part Number

ID OD LengthWeightConnection

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Well pressure creates primaryseal. The primary seal isproduced by forcing the ballagainst the upper seat. Sealingis efficient in high or lowpressure. Under low pressure,the spring-loaded lower seatcreates initial sealing. Highpressure forces the ball againstthe upper seat.

Pressure balancing. With aclosed valve containing wellpressure from below, pressureapplied from above equalizesthe force on the ball. Thispressure balancing significantlyreduces operating torquenecessary to open the valve,even at high pressure.

Downward pressure seal formud saver. Pressure fromabove acts on the ball forcing itagainst the lower seat to providea reliable seal.

Quality control measures are exacting. Here, thestainless steel ball is prepared for inspection. Theprecise shape of the ball is recorded using a Talyrondinspection device. Each and every ball is inspected forsize, finish, and sphericity.

Kellyguard Valve Features

T-shaped seal andbackup rings providea pressure seal andminimize rotationalfriction.

Ball

O-ring seal and back-up rings provide aseal between thebody and sleeve.

Coupler

Operating Crank

Crank DogSleeve

Open Position Closed Position

Checkguard Features

Landing sub indrill string. checkvalve is storedtop side.

The check valvehas landed andlatched in the suband is containingwell pressure. Theball closesagainst upwardpressure.

Check valve haslanded in the sub.it is allowingcirculation ofdrilling fluid.

The retrievingtool is unlatchingand lifting thecheck valve.

Checkguard is a drop-in check valve for the drill string.The check valve remains top side until needed and isretrievable by wire line. It provides the driller a means tocontrol the drill pipe pressure when required. The checkvalve prevents upward flow through the drill pipe, butallows fluid to be pumped downward to circulate thewell.

15,000 psi Working Pressure

Checkguard seals up to 15,000 psi working pressure;yet it is lightweight and easily handled.

Maximized Flow Area

Downward flow areas are maximized, allowing high flowcapacity and long life.

Installed As Needed

The check valve remains on the drill floor until it isneeded. Many downhole valves are part of the drillstring and are constantly subject to abrasive wear. This

wear results in frequent replacement of valves and canprevent valve closure when needed. Checkguard is notexposed to premature deterioration. Only the landingsub is installed as the drill string is run. When control isneeded, the check valve is pumped down the drill stringwhere it latches automatically in the landing sub.

Wire Line Retrieved

Since the check valve can be wire line retrieved, iteliminates the need to trip the drill string for retrieval.Yetretrieval can also be accomplished after tripping out thedrill string.

Positive Closure

Traveling down the drill string, the check valve lands onthe landing sub sleeve and latches positively into place.The replaceable landing sleeve has recessed areas intowhich the check valve packer seals. Upward pressure iscontained by the packer and ball.

Kellyguard valves feature a replaceable operatingcrank sleeve. This sleeve protects the body fromunnecessary wear to extend life and reduce costs. Thecrank operates inside the sleeve and is coated toreduce friction. The coating decreases torque and wearbetween the bearing surfaces. The sleeve also has apositive stop mechanism so the crank turns 90 degreesfor full opening and closing. Operation is easy with thehex-operating wrench.

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Checkguard Valve Assembly Parts

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ITEM DESCRIPTION QTY NO. 27 NO. 35 NO. 43 NO. 48

2 SUB BODY 1

**3 LANDING SLEEVE 1 3127095 3125119 3126392 3127117

4 SPLIT RING 1 3131099 3131101 3131103 3131105

5 RING RETAINER 1 3131150 3131152 3131154 3131156

**6 RING RETAINER-SPIRAL 1 1920003-231 1900149-148 1900149-159 1900149-161

*7 QUAD RING 1 1921173-230 1921173-234 1921173-240 1921173-244

*8 O RING 1 1900004-233 1900004-340 1900004-346 1900004-349

*9 BACKUP RING 2 1920069-233 1920069-340 1920069-346 1920069-349

** SEAL KIT 3133149 3133148 3133147 3126357-SK

REPAIR KIT 3133152 3133151 3133150 3126357-RK

LANDING SUB ASSEMBLY

*Included in Seal Kit**Included in Repair Kit

ITEM DESCRIPTION QTY NO. 27 NO. 35 NO. 43 NO. 48

1A CAGE, BALL 1 3132109 3132108 3132107 3131853

***1B SEAT, BALL 1 3127085 3126408 3126450 3127110

1C BODY 1 3126367 3125115 3126588 3127112

1D NUT 1 3127090 3125116 3126586 3127113

1E SLIP 1 3127036 3125117 3126587 3127052

***1F PACKER 1 3126334 3125118 3126397 3126563

***1G BACKUP RING, INNER 1 3127092 3126560 3126590 3127114

***1H BACKUP RING, OUTER 1 3127093 3126561 3126589 3127115

1I RETAINING RING 1 3126579-2 3126579-3 3126579-4 3126579-5

1J SPRING, UPPER 1 3126660 3126516 3126518 3126520

***1K SPRING, VALVE 1 3126515 3126517 3126519 3126521

***1L BALL 1 1900754-2 1900754-3 1900754-4 1900754-5

1M RETAINING SCREW 2 3125122-2 3125122-3 3125122-3 3125122-3

1N SET SCREW 1 1900755-0603 1900755-0604 1900755-0604 1900755-0604

REPAIR KIT 3133165 3133166 3133167 3133168

CHECK VALVE ASSEMBLY

RETRIEVAL TOOL (Not shown in this illustration)

***Included in Repair Kit

ITEM DESCRIPTION QTY NO. 27 NO. 35 NO. 43 NO. 48

RETRIEVAL TOOL 1 1007225 1007425 1004625 1007725

Operational Advantages and Durable ComponentsResult in Low Cost of Ownership

Hydril designed and developed theoriginal one piece Kellyguard valveto fit the full range of kelly valveapplications, and set the standardfor the industry. The Kellyguardvalve can serve as an upper kellycock, top drive kelly cock, lowerkelly cock, drill pipe safety valve,and mud saver. Minimum torque isneeded to open the valve.

Abrasion-Resistant Metal-to-Metal Seals are Effective in Lowor High Pressure. The sealingsurfaces on the ball and seats aremetal-to-metal providing reliablesealing from low to high pressure.

10,000 or 15,000 psi ProtectionKellyguard valves have a one piececompact body for easy handlingand provide protection from 10,000 or 15,000 psi. Formaximum safety, Hydril tests all bodies at 1 1/2 timesrated working pressure.

Pressure Balancing Allows EasyOpening. The Kellyguard valve iseasily opened, even while sealingpressure. Operating torque isminimized by balancing pressures,above and below the ball. Pressureapplied to the top of the ballequalizes well pressure acting onthe ball from below. Because the ballis floating, the downward pressureacting on it reduces the frictionbetween the ball and the seat. Thisreduction in friction decreases thetorque required to rotate the ball,and thus allow opening of the valve.

Designed for Demands of ModernApplications: Stainless Steel,Interchangeable Parts, EasyMaintenance, Long Service Life.Kellyguard valves require little

maintenance. They have few operating parts, allowingeasy repair. No lubrication is necessary except duringassembly. All internal parts are stainless steel forcorrosion resistance and long service life. They areprecisely manufactured for interchangeability, allowingeasy fitting of parts during assembly or repair. Fortraditional applications, Kellyguard valves aremanufactured with enough length on each end to re-cut the connection in case of damaged threads orshoulders. The box and pin connections are cared foras any tool joint with periodic inspections.

Open and close positions are clearly indicated on all models. Astop mechanism ensures full 90 degrees rotation for full openingand closing. Proper positioning of the ball provides excellentperformance and a long service life. Minimum torque is needed toopen the valve because of the pressure balancing function.

Hydril manufacturing procedures meet the highestinternational standards of quality.Hydril's 9001 Certificate attests to its commitment to quality.

Stainless steel ball and seats providemetal-to-metal sealing to ensure pressureintegrity under a wide range of operatingconditions.

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PACKER REPLACEMENT (1F)1. Remove retainer ring (1I) and two retaining screws

(1M) from valve body (1C).2. Slide lower portion of valve from valve body.3. Remove outer backup ring (1H), inner backup ring

(1G), and packer (1F).4. Check metal parts for damage. If in good condition,

install new packer (1F) with square shouldered enddown (toward ball). Do not oil or grease packer.

5. Install inner and outer backup rings (1H and 1G).6. Slide lower portion of valve into valve body by

hand. Install two retaining screws (1M) into valvebody (1C). Ensure that screws are fully seated ingroove on outside of ball seat (1B).

7. Install retainer ring (1I) over two retaining screws(1M) so that ring fits into slots on screws.

VALVE REPLACEMENT (1N)1. Remove set screw (1N) from ball cage (1A).2. Unscrew and remove ball cage (1A) from ball seat

(1B).3. Remove ball (1L) and ball spring (1K).4. Inspect ball seat to ensure good sealing surface.

Repair if not smooth before replacing ball andspring.

5. Replace and tighten ball cage onto ball seat.6. Install set screw (1N) into ball cage (1A).

Ensure that screw is fully seated in groove on ball seat (1B).

SLIP DISASSEMBLY / ASSEMBLY (1E)1. Unscrew and remove slip nut (1D) from valve body (1C).2. Remove slip (1E) and slip spring (1J).3. Clean and inspect disassembled parts. Replace

any parts that are worn or damaged.4. Lubricate surfaces with light grease.5. Install slip spring (1J) and slip (1E).6. Install slip nut (1D).

LANDING SUB DISASSEMBLY/ ASSEMBLY (2-9)1. Remove the retaining ring (6) and the retainer ring

(5) from the upper split ring (4).2. Remove the upper split ring (4) from the sub body (2).3. Remove the landing sleeve (3).4. Remove the O-ring (7) from the landing sleeve.5. Remove the O-ring (8) and back up rings (9) from

the sub body.6. Clean and inspect disassembled parts that are

worn or damaged.

7. Lubricate surfaces with light grease.8. Install the O-ring (8) and back up rings (9) in the

ring groove in the sub body.9. Install the O-ring (7) into the landing sleeve (3)10. Install the landing sleeve (3).11. Install the upper split ring (4) into the sub body (2).12. Install the retainer ring (5) and the retaining ring (6)

into the upper split ring (4).

CHECKGUARD VALVE STORAGEAt the conclusion of each well or prior to placing thevalve in storage for even a brief period, it isrecommended that the Checkguard valve bedisassembled, cleaned, inspected, lubricated thor-oughly with non-petroleum base oil such as castor oilor silicon oil, and reassemble. Do not lubricate packer.Replacement of worn packer, seal rings and otherparts can be made conveniently at this time.

Checkguard Valve Maintenance

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RetrievingTool

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seals are O-rings with backup rings on each side.The crank seal is a "T" with backup rings on eachside. The sleeve seal is an O-ring with backup ringson each side.

The standard Kellyguard valve is intended fornormal drilling environments and those describedin NACE MR0175, section 11, which states: "Thedrilling environment is controlled by maintainingdrilling fluid hydrostatic head and fluid density tominimize formation fluid in-flow and by the use of oneor more of the following: 1) Maintenance of pH 10 orhigher to neutralize H2S in the drilled formation, 2)

use of chemical sulfide scavengers, and 3) use of adrilling fluid in which oil is the continuous phase."This configuration is designed for operatingpressures of 10,000 or 15,000 psi.

The NACE Trim Kellyguard valve is intended fornormal and corrosive drilling environments andlimited exposure to H2S. The limiting factors for H2Sexposure includes H2S concentration, pH, time, andtemperature. This configuration uses a standardKellyguard valve body and NACE compliant internalparts and is rated for 10,000 psi operating pressure.

Standard Model and NACE TrimKellyguard Valves

Cutaway ViewThese are cutaway views of the valve in the closed position. Hydriloffers Kellyguard: standard and NACE Trim models. In the HydrilNACE Trim, the internal parts only are NACE compatible.

Contact your Hydril representative for more information regarding Hydril Kellyguard

valves suitable for H2S sour gas service.

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The term rubber goods includes synthetic compounds, such as Nitrile Copolymers and Neoprene, as well asnatural rubber parts.The ideal storage situation for rubber goods would be in vacuum-sealed containers maintained in a cool, dry, darkstorage area. Atmosphere, light, and heat accelerate deterioration of rubber goods. The term aging meanscumulative effects of all three attacking agents over a period of time. The rubber goods are also affected bystretching or bending from normal shape, extreme cold, or chemical reactions with solvents and petroleumproducts.The following recommendations will allow vendors and users of oil field equipment to maximize normally availablestorage facilities for rubber goods.

Rubber Goods Storage for Checkguardand Kellyguard Valves

1. Keep the rubber storage area as dark as possible– preferably indoors, not outdoors, and away fromdirect sunlight, skylights, windows, and directartificial lighting. The ultraviolet content of the lightspectrum accelerates cracking.

2. Select a cool location (ideally below 90°F) that isaway from heaters, stoves and direct blasts ofspace heaters. Heat causes a gradual hardening ofrubber goods. The process is greatly acceleratedwhen ozone or oxygen is present. In extremely coldclimates, some rubber goods become so brittlethey will shatter when dropped or handled roughly.

3. Keep rubber goods away from electrical machinery(motors, switch gear, or any high voltageequipment producing corona). Avoid locationssusceptible to drafts that will carry the atmospherefrom electrical machinery to the rubber goodsstorage area.Exposure to the atmosphere allows ozone (O3), avery active form of oxygen, to react with and beespecially detrimental to rubber goods. Twoprincipal sources of ozone are (1) atmosphericozone, and (2) ozone created by electricaldischarges such as lighting, high voltage corona,and electrical machinery. Points of strain in rubbergoods attacked by ozone are characterized by ahard skin, which eventually crazes into smallcracks and may turn chalky or assume a bark-likeappearance.

4. The practice of first-in, first-out inventorymanagement is essential with rubber goods.

5. Store rubber goods in a relaxed position in theirnormal shape. Stretching or bending rubber goodswill result in accelerated aging or cracking. Forexample, do not hang o-rings on pegs, glands,BOP testers, or operator parts. Periodically inspectto detect aging signs and treat the rubber goodsthat must be stored in a stretched attitude with ageresistant compounds.

6. Rubber goods storage areas should be kept as dryas possible. Remove oil, grease or other foreignmaterials from the storage area to precludespillage on rubber goods. Rubber goods, both

natural and synthetic, possess some degree ofsusceptibility to deterioration from various solvents,especially oil field liquid hydrocarbons, whichcause swelling/shrinkage.

7. If storage for extended periods is anticipated,sealed containers are recommended. Impervioussurface coverings are recommended. Impervioussurface coverings such as waxing will increaseshelf life.Since the aging of a rubber product is dependentupon all of the above factors plus its size, specificcomposition, and function, no precise figure isavailable for "storage life." Generally, the greaterthe ratio of surface area to volume, the moresusceptible a part is to being rendered useless byaging. For example, a relatively large part (byvolume), such as a packing unit, might be expectedto have a much longer useful shelf life than a largediameter O-ring.No general rule can be drawn regarding usability. Alarge, heavy part might suffer the same totalamount of aging as a small, light piece and still beuseful, whereas the light piece would be rendereduseless. Thus, judgment becomes the rule andwhere there is doubt, replace the part.Prior to using rubber goods that have been storedfor periods of time, these checks should be made:

A) Is there "chalking" or "barking"?B) Has the part developed a "hard skin"?C) Do cracks appear? (Sometimes cracks will be

obvious; stretch or bend the part in question so thatany incipient cracks or very thin cracks will berevealed.)

D) Will a suspect part pass a hardness test? (In theevent that the hardness runs 15 points higher thanthe normal hardness of the part, it is considerednon-usable.) Note: Hardness is affected by tem-perature, and readings should be taken with therubber part at 70°F.

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TABLE OF CONTENTS

KELLYGUARD VALVESStandard Model and NACE Trim ................................2

Operational Advantages and ....................................4Durable Components

Kellyguard Valve Features ..........................................5

KELLYGUARD DRILL STEM VALVESEngineering Data........................................................6

Application Data ........................................................7

Parts List ....................................................................8

Detail View of Parts ....................................................9

Assembly Procedure ................................................10

Maintenance and Testing..........................................11

CHECKGUARD VALVESApplications and Operations ....................................12

Offshore Application ................................................13

Checkguard Valve Selection ....................................14

Features....................................................................16

Assembly Parts ........................................................17

Maintenance ............................................................18

Rubber Goods Storage for ......................................19Checkguard and Kellyguard Valves

Hydril’s Kellyguard is a drill stem valve. Drill stemvalves facilitate well control and prevent mud spillage.Hydril produces Kellyguard valves to service both thetraditional and top drive drilling applications. Fortraditional applications, they are attached above andbelow the kelly to close the bore to upward flow fromthe well, or downward flow while making a connection.For top drive applications, Hydril specializes in dualcrank actuator driven valves.

Upper Kellyguard valves are well suited for high flowrates, low to high-pressure sealing, and high tensileloads imposed upon upper kelly cocks. The upperKellyguard valve has left hand-threaded connections,compatible with the swivel and upper kelly connections.The upper Kellyguard valve is used to close the bore ifthe drill string becomes stuck with the kelly in the rotarytable.

Lower Kellyguard valves are rated for the ruggedapplications of lower kelly cocks, including low andhigh-pressure sealing, high tensile strength, and hightorsional strength. They have right hand threadedconnections to mate with the lower kelly end and withdrill pipe tool joints. The lower Kellyguard valve ispositioned below the kelly to close the drill stem bore tohold a kick while preparing to circulate the kick out. Itcan also be used as a mud saver.

Mud saver is the term applied to a lower Kellyguardvalve when it is used to save drilling fluid during aconnection. It saves mud costs and improves safety byreducing slippery mud on the rig floor.

Drill pipe safety valves are lower Kellyguard valveswith connections to mate with the drill pipe tool joint.Ratings are the same as lower Kellyguard valves. Thevalve assists stabbing operations due to its lowoperating torque for easy closing of the valve. Whenrequired, the open valve is stabbed onto the top tooljoint, made-up, and manually closed. It is stored in theopen position on the rig floor.

SealsThe Kellyguard valve is designed for 10,000 or 15,000psi working pressure. It is tested at the factory to15,000 or 22,500 psi. Hydril has selected high qualitymaterials and dimensional fits to ensure greatestreliability. Each valve has three elastomeric sealingareas: between each seat and body, between crankand sleeve and between sleeve and body. The seat

© 2003 Hydril Company LP All Rights Reserved.

Standard Model and NACETrim Kellyguard Valves

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HeadquartersHydril Company

P.O. Box 60458 ▼ Houston, TX 77205-04583300 N. Sam Houston Parkway East ▼ Houston, TX 77032-3411

Telephone: (281) 449-2000 ▼ Fax: (281) 985-3353

For a Hydril Sales, Service or Manufacturing location nearest you, please check our website at www.hydril.com/locations

2M GRAPH 10/03

1-800-999-1601TOLL FREE IN THE U.S.A. AND CANADA

http://www.hydril.com

Drill Stem ValvesKELLYGUARD™ DRILL STEM VALVES • CHECKGUARD® VALVESCATALOG DSV 2003 (REPLACES CATALOG PC 9701A)

R E D E F I N I N G R E L I A B I L I T Y ™