CEMENTING PLUGS AND ANCILLARY EQUIPMENT · PDF fileCEMENTING PLUGS AND ANCILLARY EQUIPMENT 2...

Sir William Smith Road, Kirkton Industrial Estate,Arbroath, Angus, Scotland, U.K. DD11 3RD

Tel: +44 (0) 1241 877776. Fax: +44 (0) 1241 871037E-mail: [email protected]: www.pioneeroiltools.com

CEMENTING PLUGSAND

ANCILLARY EQUIPMENT

CP 07/05 Copyright 2005

CEMENTING PLUGS ANDANCILLARY EQUIPMENT

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CONTENTS

Table of contentsPage Content01 Contents page02 Introduction03–04 Surface Launched Anti-rotational plugs05–06 Subsea Launched Standard plugs07–08 Subsea Launched Anti-rotational plugs09–10 High Pressure High Temperature system11 Ancillary equipment12 Launching darts and balls13 Float collars and shoes14 Cementing heads

“When time is of the essence, Pioneer delivers”


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INTRODUCTION

Pioneer Oil Tools Ltd is pleased to provide a range of products related to the downhole cementing process. These are mostly-rubber products and standard availability is in the following. Standard materials: • Nitrile Butadiene Rubber (NBR) or • Hydrogenated Acryonitrile Butadiene Rubber (HNBR)

The selection of the material is dependent on the operating environment in the hole and the physical and chemical characteristics required from the equipment item. Other materials may be specified by customer.

Material selectionMaterial Description Temperature limitsNBR High Nitrile (Acrylonitrile content 35 to 45%). Excellent resistance

to mineral based fluids and hydrocarbon fuels. Strength and resilience is reasonable but low temperature performance is poor.

-45ºC to +100ºC(can go to 120ºC with special processsing)

Medium Nitrile (Acrylonitrile content 27 to 34%). Resistance to mineral based fluids is excellent, but resistance to fuels is moderate.Low Nitrile (Acrylonitrile content 18 to 25%). Strength, resilience and abrasion resistance is reasonable, and resistance to mineral based fluids is also reasonable. This material has a low temperature capability.

HNBR General performance as for NBR but better abrasion and ozone resistance. It has good resistance to Crude oil, Hydrogen Sulphide and Amines: another feature of HNBR over NBR is its higher temperature range.

-45ºC to +175ºC

Pioneer has comprehensive experience in the design and manufacture of various types of oil-industry tools. If your requirements are not covered in this brochure, please contact us. Our sales and design team are anxious to demonstrate our range of products and versatility, by solving your tooling problems.


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SURFACE LAUNCHEDANTI-ROTATIONAL PLUGS

Pioneer Oil Tools Ltd surface launched anti-rotational cementing plugs are designed to provide a firm wiping action on the casing walls, a good seal for the cement when being pumped (to avoid contamination) and are easily drillable.

Operation of the plugs is simple: the bottom plug is loaded, followed by the cement and then the top plug. The plug set is then pumped down to the required location. The bottom plug latches at the required level into a baffle joint or float collar. Pressure is applied to the top plug resulting in the shear disc in the bottom plug bursting. The cement then extrudes through the bottom plug until the top plug closes and latches with the bottom plug. The cement is then allowed to set.

Pioneer’s high quality cementing plugs are constructed from nitrile rubber, bronze and nylon. The plugs incorporate toothed anti-rotational devices that mesh between the top and bottom plugs and between the bottom plug and the receiver. In conjunction with its nylon core, these anti-rotational measures ensure that the plugs can be drilled through easily with a PDC bit.

SLNT1338T / SLNB1338T SLNT0963T / SLNB0963T


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SURFACE LAUNCHEDANTI-ROTATIONAL PLUGS (Cont’d)

The plugs are manufactured from two colours of rubber for easy identification of the top and bottom plugs and to determine when the lower plug has been drilled through. Top plugs are moulded from black rubber, bottom plugs from red. Cementing plugs come in a range of sizes and are capable of accepting different pressures. Specifying details are as follows, with T indicating top plug and B for bottom plug:

Surface launched anti-rotational plugsProductcode

Size Maxpressure

Max temperature

SLNTSLNB 20” x 18 ⅝” 2000 PSI

SLNTSLNB 16” 2700 PSI

SLNT1338TSLNB1338T 14” x 13 ⅜” 6000 PSI 175º

SLNT0963TSLNB0963T 10 ¾” x 9 ⅝” 8000 PSI 175º

SLNTSLNB 7 ⅝” x 7” 8000 PSI

When ordering specify the following: • Diameter of plug required. • Minimum constraint to plug travel. • Working pressure and temperature. • Shear disc pressure required.


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SUBSEA LAUNCHEDSTANDARD PLUGS

Pioneer Oil Tools Ltd’s subsea launched standard cementing plugs are designed to provide a firm wiping action on the casing walls, a good seal for the cement (to avoid contamination) and are made of materials that are easily drillable with a PDC bit.

Operation of the plugs is simple but effective. The plug set is connected to the cementing stinger on the drill pipe and lowered to the correct position. A ball is dropped down the drill pipe followed by cement. The ball seats itself in the bottom plug sealing off the lower plug bore. Subsequent pressurisation of the cement column results in the shear pins of the bottom plug shearing, releasing the bottom plug and cement to travel to a plug receiver (also available from Pioneer Oil Tools Ltd).

When sufficient cement has been pumped, a dart is released which latches itself into the top plug. Applying pressure results in the top plug shear pins shearing, releasing the top plug. The top plug can then transmit pump pressure through the column of cement; this pressure squeezes the ball into the lower chamber of the bottom plug allowing the cement to extrude out through the plug’s bottom ports. The cement is then allowed to set before drilling through.

The high quality cementing plugs are made of nitrile rubber, aluminium, PVC and nylon ensuring that the plugs can be drilled through easily.

CPN2000E

CPND1338E


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SUBSEA LAUNCHEDSTANDARD PLUGS (Cont’d)

The plugs are manufactured in two colours of rubber (for easy identification and to allow operators to gauge which plug they are drilling through) – top plugs in black, bottom plugs in red.

Cementing plugs come in a range of sizes and capable of accepting different pressures. Specifying details are as follows:

Subsea launched standard plugsProductcode

Size Maxpressure

Max temperature

CPND2000E 20” x 18 ⅝” 1500 PSI 65ºCCPND1600E 16” 2000 PSI 65ºCCPND1338E 14” x 13 ⅝” 4000 PSI 170ºCCPND0963E 10 ¾” x 9 ⅝” 5000 PSI 170ºCCPND0700E 7 ⅝” x 7” 5000 PSI 170ºC

The code letter D indicates a set of plugs and can be omitted if single plugs are required.

When ordering specify the following: • Diameter of plug required. • Minimum constraint to plug travel. • Working pressure and temperature. • Connection requirements for top plug.

Pioneer would be pleased to supply associated equipment of darts and balls for these items.

CPND0963E

CPND0700E


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SUBSEA LAUNCHEDANTI-ROTATIONAL PLUGS

Pioneer Oil Tools Ltd subsea launched standard cementing plugs are designed to provide a firm wiping action on the casing walls, a good seal for the cement (to avoid contamination) and made of materials that are easily drillable with a PDC bit. These plugs also have the additional feature of anti-rotational teeth between the plugs to facilitate drilling.

The operation of the subsea anti-rotational plugs is very similar to the standard type. Placement is by the drill string, utilising darts and balls to control the operations of the plugs and the placing of cement.

The high quality cementing plugs are constructed from nitrile rubber, aluminium, PVC and nylon. The materials ensure that the plugs can be drilled through easily. The plugs are manufactured from red and black rubber, to make easy identification of the top and bottom plugs and to aid drilling operators in identifying which plug they are drilling through. Plugs are supplied as a set or as single top plugs.

CPN1338T

CPND1338T

CPN2000T


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SUBSEA LAUNCHEDANTI-ROTATIONAL PLUGS (Cont’d)

Cementing plugs come in a range of sizes and capable of accepting different pressures. Specifying details are as follows:

Subsea launched anti-rotational plugsProductcode

Size Max pressure Max temperature

CPND2000T 20” x 18 ⅝” 2000 PSI 65ºCCPND1600T 16” 2700 PSI 65ºCCPND1338T 14” x 13 ⅜” 6000 PSI 175ºCCPND0963T 10 ¾” x 9 ⅝” 8000 PSI 175ºCCPND0700T 7 ⅝” x 7” 8000 PSI 175ºC

The code letter D indicates a set of plugs and can be omitted if single plugs are required.

When ordering specify the following: • Diameter of plug required. • Minimum constraint to plug travel. • Working pressure and temperature.

Pioneer would be pleased to supply associated equipment of darts and balls for these items. The plugs are compatible with the BJ Launch System.

CPND0963T

CPND0700T

CPN0963T


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HPHT SYSTEMHigh Pressure High Temperature

The HPHT system is designed to operate in more difficult environmental conditions of high temperature and pressure (up to 175ºC and up to 15,000 psi).

The plugs are made for surface launching and have operating characteristics similar to the standard surface launched plug for good wiping of the casing, a good seal for the cement when being pumped (to avoid contamination) and made of materials that are easily drillable with a PDC bit.

The use of an aluminium core allows the plug to be used at higher pressures than the standard plug. The other high quality materials from which the plug is manufactured are HNBR rubber and a bronze shear disc in the bottom plug. The plugs are made from red and black rubber for easy identification.

The plugs have optional receiving mechanisms for the bottom plug and can be made with either a solid aluminium top to the top plug or fitted with an aluminium poppet valve to control pressure between the plugs.

Plugs may be supplied as a set of top and bottom plug or as an individual plug.

CPHD1338ST

CPHD0963ST


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HPHT SYSTEM (Cont’d)

Cementing plugs come in a range of sizes from 7” to 14”. Specifying details are as follows:

HPHT systemProduct code SizeCPHD1338ST 14” x 13 ⅜”CPHD0963ST 10 ¾” x 9 ⅝”CPHD0700ST 7 ⅝” x 7”

The code letter D indicates a set of plugs and can be omitted if single plugs are required. If a poppet valve is required a PV code should be used at the end of the item code.

When ordering the following should be specified: • Diameter of plug required. • Minimum constraint to plug travel. • Working pressure and temperature. • Receiver connection requirements. • Poppet Valve required or not.

Pioneer would be pleased to supply associated equipment (cement heads, etc) with this equipment if required.

CPHD0963ST-PV

CPHD0700ST-PV

CPH0963ST-PVCPH0700ST-PV


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ANCILLARY EQUIPMENT

Pioneer Oil Tools Ltd is able to supply a range of ancillary equipment associated with cementing plugs and the cementing process. These items include

DartsBallsFloat valves and shoesCementing Heads

All items are made from similar high quality materials as the plugs with nitrile rubber, aluminium and nylon parts where items are for downhole use and need to be PDC drillable.

When specifying requirements ensure that the whole system is compatible dimensionally and in operating environment parameters.


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ANCILLARY EQUIPMENTLAUNCHING DARTS AND BALLS

Pioneer Oil Tools Ltd Launching Darts and Balls are compatible with the associated range of subsea launched cementing plugs and are to industry standard dimensions. Customer-specified dimensions can also be accomodated. The Launch Darts can be supplied with different latching mechanisms, the capability to operate under high pressure conditions if required and a poppet valve feature.

The Launching Darts and Balls are made from high quality nitrile rubber and aluminium latching mechanism on the darts to ensure that they are PDC drillable.

The design of the Launch Darts ensures that they remain stable in the casing during their path to the top cement plug and then latch easily into the plug.

LD0500

LD0663A

LB0225


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ANCILLARY EQUIPMENTFLOAT COLLARS AND SHOES

Pioneer produces a range of dependable float collars for a variety of casing sizes for use with Pioneer cement plugs.

The primary feature of all pioneer float collars is the non-return valve. This mechanism allows wellbore/drilling fluids and back-flowing cement to be excluded from the casing string.

This feature gives the tool its name as each joint run above the valve displaces its own volume of drilling fluid and hence allows the string to partially “float”, mitigating a portion of the weight of the string.

The float collar also incorporates an anti-rotational feature, a quality that permits the easy drilling of Pioneer anti-rotational cementing plugs.

In addition a range of float shoes is available to match each float collar.

PVN0963B


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ANCILLARY EQUIPMENTCEMENT HEADS

Pioneer Oil Tools Ltd has a series of cement heads to be used in conjunction with the range of cement plugs and darts or with other suppliers equipment.

These cement heads feature a quick release mechanism that permits rapid connection/disconnection of the cement head from the string.

The cement heads are made from high quality materials and are pressure tested.

Cement headsProduct Tested

pressureWorking pressure

14” Cement Head 11250 PSI 7500 PSI

10 ¾” Cement Head

14” Cement Head

Sir William Smith Road, Kirkton Industrial Estate,Arbroath, Angus, Scotland, U.K. DD11 3RD

Tel: +44 (0) 1241 877776. Fax: +44 (0) 1241 871037E-mail: [email protected]: www.pioneeroiltools.com

CEMENTING PLUGSAND

ANCILLARY EQUIPMENT

CP 07/05 Copyright 2005As the policy of Pioneer Oil Tools Ltd is one of continual improvement, we reserve the right to change designs or specifications without notice.

CEMENTING PLUGS AND ANCILLARY EQUIPMENT · PDF fileCEMENTING PLUGS AND ANCILLARY EQUIPMENT 2...

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