8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 1/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html

Netwas Group Oil » Well Control

Gaskets Seals And Wellheads Api Type R R ing JointGasket

Last Updated on Mon, 11 Apr 2016 | Well Control

The type 'R' ring joint gasket   is not energised by internal pressure. Sealing

takes place along small bands of contact between the grooves and the gasket, on

both the OD and ID of the gasket. The gasket may be either oct agonal or oval in

cross section. The type 'R' design does not allow face-to-face con tact between the

hubs or flanges, so external loads are transmitted through the sealing surfaces of 

the ring. Vibration and external loads may cause the small bands of contact

between the ring and the ring grooves to deform the plastic, so that the joint

may develop a leak unless the flange bolting is periodically tightened. Standard

procedure with type 'R' joints in the BOP stack  is to tighten the flange bolting

weekly.

Figure 6.4.1

Figure 6.4.1

ENERGISED

Review

Seismic Isolation Designers

Popular Articles

Table Example Calculation Derrick

Contract Types Drilling Operations

Operational procedure stripping

Carbonate Bicarbonate

Electric Motors Shale Shakers

Circle Uncertainty Oil Well

Combination Traps Drilling Services

Magnetic Declination Angle

Fundamental Principles Well

Differential Hydrostatic Pressure

Lubinskfs Maximum Permissible

Constant Bottom Hole Pressure Kill

Critical Rotary Speeds Oil Well

Pressure Column Drilling

Catenary Curve Well Plan Drilling

Categories

Oil Well Drilling

Drilling Fluids

Drilling Guide

Drilling Engineering

Drilling Procedures

Drilling Engineering

Drilling Operations

Drilling Services

Directional Drilling

Drilling Fluids

Well Control

Offshore Drilling

Well Control

Horizontal Directional Drilling

Petroleum Engineering

Formulas and Calculations

Drilling Fluid Systems

Air and Gas Drilling

Drilling Risers Systems

Formulas and Calculations

Waste Management

Drilling Engineering

Health Risk Management

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 2/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 2

SECTION 6 : WELL CONTROL EQUIPMENT

Figure 6.4.3

SECTION 6 : WELL CONTROL EQUIPMENT

API Type 'RX' Pressure-Energised Ring Joint Gasket

The 'RX' pressure-energised ring joint gasket was developed by Cameron Iron

Works and adopted by API. Sealing takes place along small bands of contact

between the grooves and the OD of the gasket. The gasket is made slightly larger

in diameter than the grooves, and is compressed slightly to achieve initial sealing

as the joint is tightened. The 'RX' design does not allow face-to-face contact

between the hubs or flanges. However, the gasket has large load-bearing surfaces

on the inside diameter, to transmit external loads without plastic deformation of 

the sealing surfaces of the gasket. It is recommended that a new gasket be used

each time the joint is made up.

Figure 6.4.4

Figure 6.4.4

Drilling Engineering

Directional Drilling

Drilling Equipment

Drilling Services

Milling Grinding Drilling

Test Holes And Wells

Drilling Guide

Well Drilling

Drilling Fluids

Drilling for Gold

Extreme Environments

Patterns of Drilling Predation

Drilling Methods

Petroleum Engineering

Tank Arrangement

Drilling of Plastics

Drilling Riser Couplings

Drilling Machine

Calculation Formulas

Corrosion on Well Equipment

Iadc Drilling

Drilling Fluid Technology

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 3/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 3

Figure 6.4.5

SECTION 6 : WELL CONTROL EQUIPMENT

API Type 'BX' Pressure-Energised Ring Joint Gasket

Sealing takes place along small bands of contact between the grooves and the OD

of the gasket. The gasket is made slightly larger in diameter than the grooves,

and is compressed slightly to achieve initial sealing as the joint is tightened.

Although the intent of the 'BX' design was face-to-face contact between the hubs

and flanges, the groove and gasket tolerances which are adopted are such that, if 

the ring dimension is on the high side of the tolerance range and the groove

dimension is on the low side of the tolerance range, face-to-face contact may be

very difficult to achieve. Without face-to-face contact, vibration and external loads

can cause plastic deformation of the ring, eventually resulting in leaks. Both

flanged and clamp hub 'BX' joints are equally prone to this difficulty. The 'BX'

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 4/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 4

gasket frequently is manufactured with axial holes to ensure pressure balance,

since both the ID and the OD of the gasket may contact the grooves.

In practice, the face-to-face contact between hubs or flanges is seldom achieved.

Figure 6.4.6 Figure 6.4.7 Figure 6.4.8

Figure 6.4.6 Figure 6.4.7 Figure 6.4.8

SECTION 6 : WELL CONTROL EQUIPMENT

API Face-to-Face Type 'RX' Pressure-Energised Ring Joint Gasket

The face-to-face 'RX' pressure-energised ring joint gasket was adopted by API as

the standard joint for clamp hubs. Sealing takes place along small bands of 

contact between the grooves and the OD of the gasket. The gasket is made

slightly larger in diameter than the grooves, and is compressed slightly to achieve

initial sealing as the joint is tightened. Face-to-face contact between the hubs is

ensured by an increased groove width, but this leaves the gasket unsupported on

it's ID. Without support from the ID of the grooves, the gasket may not remain

perfectly round as the joint is tightened. If the gasket buckles or develops flats,

the joint may leak.

This type of gasket has not been accepted by the industry and is seldom used.

Figure 6.4.9

Figure 6.4.10

Figure 6.4.9

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 5/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 5

Figure 6.4.10

ENERGISED

SECTION 6 : WELL CONTROL EQUIPMENT

'CIW' Type 'RX' Pressure-Energised Ring Joint Groove

CIW modified the API face-to-face type 'RX' pressure-energised ring joint grooves

to prevent any possible leaking caused by the buckling of the gasket in the API

groove. The same API face-to-face type 'RX' pressure energised ring joint

gaskets   are used with these modified grooves. Sealing takes place along small

bands of contact between the grooves and the OD of the gasket. The gasket is

made slightly larger in diameter than the grooves, and is compressed slightly to

achieve initial sealing as the joint is tightened. The gasket ID will also contact the

grooves when it is made up. This constraint of the gasket prevents any possible

leaking caused by the buckling of the gasket. Hub face-to-face contact is

maintained within certain tolerances. The maximum theoretical stand-off from

the stack-up of the tolerances of the gasket and the groove is 0.022 inches.

Face-to-face contact cannot be assured with this ring/groove combination. This

ring is seldom found in use. The 'CX' ring accomplishes the intent of the 'RX' face-

to-face design.

Figure 6.4.13 Figure 6.4.14

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 6/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 6

Figure 6.4.13 Figure 6.4.14

SECTION 6 : WELL CONTROL EQUIPMENT

Type 'AX' and 'VX' Pressure-Energised Ring Joint Gasket

The 'AX' pressure-energised ring joint gasket was developed by Cameron Iron

Works. The 'VX' ring was developed by Vetco.

Sealing takes place along small bands of contact between the grooves and the OD

of the gasket. The gasket is made slightly larger in diameter than the grooves,

and is compressed slightly to achieve initial sealing as the joint is tightened. The

ID of the gasket is smooth and is almost flush with the hub bore. Sealing occurs

at a diameter which is only slightly greater than the diameter of the hub bore, so

the axial pressure load on the connector is held to an absolute minimum. The belt

at the centre of the gasket keeps it from buckling or cocking as the joint is being

made up. The OD of the gasket is grooved. This allows the use of retractable pins

or dogs to positively retain the gasket in the base of the wellhead or riser

connector when the hubs are separated. The gasket design allows face-to-face

contact between the hubs to be achieved with minimal clamping force   . External

loads are transmitted entirely through the hub faces and cannot damage the

gasket.

Figure 6.4.13 Figure 6.4.14

SECTION 6 : WELL CONTROL EQUIPMENT

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 7/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 7

'CIW' Type 'CX' Pressure-Energised Ring Joint Gasket

The 'CX' pressure-energised ring joint gasket was developed by Cameron Iron

Works. Sealing takes place along small bands of contact between the grooves and

the OD of the gasket. The gasket is made slightly larger in diameter than the

grooves, and is compressed slightly to achieve initial sealing as the joint is

tightened. The gasket is patterned after the 'AX' and 'VX' gasket, but is recessed,

rather than being flush with the well bore, for protection against keyseating. The

gasket seals on approximately the same diameter as do the 'RX' and 'BX' gaskets.

The belt at the centre of the gasket keeps it from buckling or cocking as the joint

is being made up. Since the 'CX' gasket is protected from keyseating, it is suitable

for use through the BOP and riser system, except at the base of the wellhead and

riser connectors. The gasket design allows face-to-face contact between the clamp

hubs or flanges to be achieved with minimal clamping force. External loads are

transmitted entirely through the hub faces and cannot damage the gasket.

Figure 6.4.15 Figure 6.4.16

Figure 6.4.15 Figure 6.4.16

section 6 : WELL CONTROL EQUIPMENT

Application of Type 'AX', 'VX' and 'CX' Pressure-Energised Ring Joint Gaskets

The 'AX', 'VX' and 'CX' face-to-face pressure-energised ring gaskets allow face-to-

face contact between the hubs to be achieved with minimal clamping force. The

'AX' and 'VX' gasket is used at the base of the wellhead and riser connector when

the hubs are separated. The 'AX'/'VX' design ensures that axial pressure loadingon the connector is held to an absolute minimum. The 'AX' gasket also is suitable

for side outlets on the BOP stack, since these outlets are not subject to

keyseating. The 'CX' gasket is recessed for protection against keyseating. The 'CX'

gasket is suitable for use throughout the BOP and riser  system, except at the

base of the wellhead and riser connector.

Figure 6.4.17 HYDRIL DRILLING SPOOL  DATA

Figure 6.4.17 HYDRIL DRILLING SPOOL DATA

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 8/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 8

section 6 : WELL CONTROL EQUIPMENT

Figure 6.4.18

Figure 6.4.18

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 9/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 9

r section 6 : WELL CONTROL EQUIPMENT

Figure 6.4.19

Figure 6.4.19

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 10/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 10

SECTION 6 : WELL CONTROL EQUIPMENT

Figure 6.4.20 SPECIFICATIONS FOR BOP FLANGES, RING GASKETS, FLANGE

BOLTS AND NUTS

e

g

n

la

M—

t

in

oi

g

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 11/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 1

in ri

PI

A

O

M—

o

e

p

s

e

h t

h

it

wi

d

e

h

is

ni

r

1

M—

e

.Q

wil

s

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 12/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 12

e

g

n

la

M—

r

te

pt

a

d

a

(fí 

ol

o

p

s

g

in

ri

d

(fi =5

r te lo el

nt

e .Q

v d

re te

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 13/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

http://www.netwasgroup.us/well-control-2/gaskets-seals-and-wellheads-api-type-r-ring-joint-gasket.html 13

« Previous Page Next Page »

pr ist

o w lo nt e m

ip

( )

.J

All e

Related Posts

Make Money in the Recycling BusinessBlowout Prevention Stack - Air and Gas Drilling Work Area Conditions - Horizontal Directional DrillingBlowout Preventer Operating TestFlanges And Ring Gasketsapi ADrilling Spools - Well Control

Responses

0 0

4 years ago

Where do rx gaskets seal?

Alex

Reply

4 years ago

What are the sealing areas of ring gasket and ring grove?

olga

Reply

3 years ago

What is the benifit of cameron cx gaskets?

Robel

Reply

3 years ago

What is the external pressure rating of a VX vetco ring gasket?

IVANA

Reply

2 years ago

How does a r type ring gasket seal?

 james

Reply

2 years ago

Where do API ring grooves seal at?

lodovica

Reply

8/16/2019 Gaskets Information

http://slidepdf.com/reader/full/gaskets-information 14/14

12/5/2016 Gaskets Seal s And W el lheads Api Type R R ing Joi nt Gasket - W el l C ontr ol

Post a comment

Comment

About | Contact | Privacy Policy | Resources

1 year ago

Are Cameron AX and Vetco VX ring gaskets interchangable?

christian

Reply

Optional