Cameron Mudline Suspension System

Key features make the

patented Cameron Centric 15

and Centric 15 EX Mudline

Suspension Systems the most

economical, dependable mudline

equipment on the market today.

Every Centric 15 and Centric

15 EX system comes with the fol-

lowing features - each designed

to improve performance and

enhance reliability:

• Stack-Down Configuration

• Patented Wash Sleeve Design

• Separate Running/Tieback

Threads

• Prealigning Threads

Throughout

• Stab-In and Threaded Tieback

Options

• Metal Sealing

• High Pressure System

Available as Standard

In addition, the Centric 15

system offers the following

options:

• Dual Centralization

• Tieback Testing Capability

• Positive Hanger Lock-Down

• Annular Sealing TA Caps

Compare, feature for feature,

you will see that Cameron’s

Centric 15 and Centric 15 EX

Mudline Suspension Systems are

your best choices for drilling,

temporary abandonment and

production tieback operations at

the mudline.

The Cameron Centric 15 Mudline SuspensionSystem is a proven, dependable system fordrilling, temporary abandonment and produc-tion tieback operations.

System Features¥ Deep stack-down configuration eliminates

trash/debris traps and improves the reliabilityand efficiency of tieback operations.

¥ Separate thread and seal areas for runningand tieback minimize the risk of damage tocritical areas.

¥ High-pressure and high casing hanger loadcapacities increase system versatility.

¥ Patented washout technique for large diame-ter casing strings eliminates pipe rotation.

¥ Washout is possible with conductor set in tension.

¥ Unique split-ring design prevents damage tocage during compression in wellhead, accom-modates debris and provides two point centralization.

¥ All threads prealign to facilitate installationand tieback.

¥ Split ring hanger reciprocation is achievedwithout recovery for resetting.

Installation Features¥ All running tools feature right-hand release

for ease of abandonment.¥ All hangers incorporate dual centralization to

ensure concentricity.¥ Washout ports located in the running tools.¥ Low torque metal seals with resilient backup

ensure seal integrity. ¥ External test ports for hanger/running tool

interface provide means for testing prior toinstallation.

¥ Torque tool profiles in all running tools.

Temporary Abandonment Features¥ A single temporary abandonment cap covers

both production bore and annulus, locking thehangers in place.

¥ Cap can be run and retrieved inside surface casing.

¥ Single-trip cap design saves a trip duringinstallation and retrieval.

¥ Stab-in temporary abandonment caps standard.

¥ Handling profile extended for clear access.

Tieback Features¥ Robust threads ensure damage-free

connection.¥ Right-hand make-up for tieback tools ensures

ease of installation.¥ Torque profiles available in tieback tools.¥ Low torque metal-to-metal seals with resilient

back-up ensure sealing integrity.¥ Ability to tieback to the 13 3/8Ó casing prior to

removing cap ensures safety, saves rig time.

Centric 15 Mudline Wellhead System

SD016628

2

Split Ring Mudline Hanger Engagement Sequence

Hanger Running Through

Casing

Split Landing RingEngages Receiving

Hanger Profile

Split Landing Ring Setsand Setting

Ring Engages

Hanger Lands on Load Ring

The Cameron Centric 15Mudline System incorpo-rates a patented washouttechnique which eliminatesthe need to rotate the casing.In this system, a washsleevein the running tool can beopened and closed using atorque tool run as part of thecement stinger. Since thesleeve is not affected by riserbending loads, it can beoperated at all times usinglow torque rates. Also, thewashports can be openedwith the cement string inplace, minutes after comple-tion of cementing.

1. Hanger is inserted through wellhead into casing. Split ringis retracted. Setting ring andfluted hanger section preventpresetting.

2. Split ring arrives at hanger profile where it easily expandsprior to landing.

3. Split ring lands in hanger prior to hanger suspensionon load ring.

4. Hanger seats on split ring; setting ring is forced into fully expanded position. Hanger is suspended parallel to the receiving profile.

Washout Procedure

With more flexible casingstrings that are less prone tohigh manipulating torque,washout ports on the surfaceand production string run-ning tools are opened byrotating the casing. Theports are designed to ensurecleaning action.

SD016675

SD016624

3

Threaded Tapered Stab-in

The Centric 15 temporary abandonment cap protects thecasing hangers and tieback profiles from the environmentduring the abandoned period.It is installed in the productionstring mudline hanger sealingthat bore and the next casingannulus. The cap is engaged inthe 9 5/8Ó hanger with a stab-type threaded ring and locksitself in the 133/8Ó hanger with a device activated by the down-ward motion of the cap. Duringrecovery, trapped pressure canbe vented and its source identi-fied. Other caps and trash covers are available for largerhangers.

A mudline hanger is used tosuspend casing strings whichwill not be tied back to thesurface during tieback opera-tions. This option allows operators the flexibility ofinstalling additional strings of casing as needed withoutthe need for additional risersto surface and the handlingtime associated with surfacewellhead equipment.

The Centric 15 System uses threaded or stab-in type tieback connectionson the smaller sizes and tapered threads on larger sizes where maximumbending and tensile forces are exerted. Tieback threads and seal areasare not used during drilling and abandonment.

Tieback Methods

Mudline Liner Hanger Temporary Abandonment Cap

SD016622

SD016629

SD016618

4

Centric 15 EX Mudline Wellhead System

The Cameron Centric 15 EX Mudline SuspensionSystem is an economical, stack-down system. Itsconfiguration is based on the Centric 15, but ashorter profile makes it ideal for explorationapplications.

System Features¥ Stack-down configuration eliminates

trash/debris traps and improves the reliabilityand efficiency of tieback operations.

¥ Separate thread and seal areas minimize possibility of damage to critical areas.

¥ High-pressure and high casing hanger loadcapacities increase system versatility.

¥ Optional patented washout technique for largediameter casing strings eliminates pipe rotation.

¥ Unique split-ring design prevents damage to cageduring compression in wellhead, accommodatingdebris and provides two point centralization.

¥ All threads throughout the system prealign toensure precise installation and tieback.

¥ Split ring hanger reciprocation is achieved withoutrecovery or resetting.

Installation Features¥ All running tools feature right-hand release for

ease of installation.¥ Hangers can incorporate dual centralization to

ensure concentricity.¥ Washout ports are located in the running tools.¥ Low torque metal seals with resilient backup

ensure seal integrity. ¥ External test ports for hanger/running tool

interface provide means for testing prior toinstallation.

Temporary Abandonment Features¥ A temporary abandonment cap covers the

production bore and incorporates a simplecheck valve.

¥ Threaded cap design standard. Optional stab-indesign available.

¥ Pressure retaining or vented cap designs available.

¥ Handling profile extended for clear access.

Tieback Features¥ Robust threads ensure damage-free connection.¥ Right-hand make-up for surface and

production tieback tools ensures ease of installation.

¥ Torque profiles available in tieback tools.¥ Low torque metal-to-metal seals with resilient

back-up ensure sealing integrity.

SD016627

5

The Cameron Centric 15 EX Mudline System incor-porates the option of apatented washout techniquewhich eliminates the need torotate the casing. In this system, a washsleeve in therunning tool can be openedand closed using a torquetool run as part of the cementstinger. Since the sleeve isnot affected by riser bendingloads, it can be operated atall times using low torquerates. Also, the washportscan be opened with thecement string in place minutes after completion of cementing.

Washout Procedure

Split Ring Mudline Hanger Engagement Sequence

With more flexible casingstrings that are less prone tohigh manipulating torque,washout ports on the surfaceand production string run-ning tools are opened byrotating the casing. Theports are designed to ensurecleaning action.

Hanger Running Through

Casing

Split Landing RingEngages Receiving

Hanger Profile

Split Landing Ring Setsand Setting

Ring Engages

Hanger Lands on Load Ring

1. Hanger is inserted through wellhead into casing. Split ringis retracted. Setting ring andfluted hanger section preventpresetting.

2. Split ring arrives at hanger profile where it easily expandsprior to landing.

3. Split ring lands in hanger prior to hanger suspensionon load ring.

4. Hanger seats on split ring; setting ring is forced into fully expanded position. Hanger is suspended parallel to the receiving profile.

SD016624EX

SD016625

6

The temporary abandonment capprotects the casing hangers andtieback profiles from the environ-ment during the abandonmentperiod. It is installed in the pro-duction string mudline hangerand seals that bore. The cap isengaged in the 9 5/8Ó hanger run-ning thread profile with eitherthreaded or stab-in action. Othercaps and trash covers are avail-able for larger hangers.

Tapered

Tieback Methods

Mudline Liner Hanger Temporary Abandonment Cap

The Centric 15 EX System uses threaded or stab-in type tiebackconnections on the smaller sizes and tapered threads on largersizes where maximum bending and tensile forces are exerted.Tieback threads and seal areas are not used during drilling andabandonment.

A mudline hanger is used tosuspend casing strings whichwill not be tied back to thesurface during tieback opera-tions. This option allows operators the flexibility ofinstalling additional strings of casing as needed withoutthe need for additional risersto surface and the handlingtime associated with surfacewellhead equipment.

Stab-inThreaded

SD016622

SD016619

SD016626

7

The MX subsea tree has been developed as a simple production system that can be economically installed on a mudline well from a jack-up rig. This system usesdiver assistance to minimize costand complexities and is very suit-able for shallow water productionprojects.

Features¥ Flexible system can be installed

over Cameron and other mud-line products.

¥ Offers minimum cost and low maintenance.

¥ Tree designs are available for single or multiple string comple-tions.

¥ Reliable and field-proven failsafe gate valves are available ineither a stacked or compositevalve block configuration.

¥ Tree design offers the option of completing inside 9 5Ú8" or 7" casing.

¥ Primary metal-to-metal seals are used at all environmentalinterfaces.

¥ Tree features a self-orientingtubing hanger with positive lockdown and anti-rotation capabilities.

¥ SCSSV lines are independently controlled.

¥ Tree can be readily maintainedwith diver assistance.

MX Subsea Tree

SD016673

8

System Variables 30” Hanger 20” Hanger 133/8” Hanger 95/8” Hanger 7” Hanger

Hanger Type n/a Load Shoulder Load Shoulder Split Ring Split RingService Standard Standard H2S or Standard H2S or Standard H2S or Standard

Min I.D. (in.) 26.25 17.58 12.31 8.803 6.115 (5)/5.905(6)

Max O.D. (in.) 30.30 27.25 18.51 12.23 8.375Recommended Bit (in.) 26 171/2 121/4 8 3/4 61/8 (5)/57/8 (6)

Pressure Rating (psi) n/a 4,020 H2S 9,470 H2S 11,840 (2) H2S 10,610 (5)

Std 10,660 H2S 10,160 H2S 13,340 (6)

Std 13,320 (2) Std 11,940 (5)

Std 11,430 Std 15.010 (6)

Rated Hanging H2S 2,461,000 (1) H2S 1,504,000 H2S 623,000Capacity (lb) n/a 3,282,000 Std 2,769,000 Std 1,692,000 Std 701,000

Flow-By Running (in.2) n/a 81.90 21.70 9.90/6.61 (3) 4.70/2.6 (4)

Flow-By Landed (in.2) n/a 48.10 14.40 10.3 4.30Particle size (in.) n/a 1.75 0.88 0.38 0.38

Axial Capacity (lb) H2S 2,165,000 .(1) H2S 1,534,000 H2S 531,000 (5)

(running) n/a 2,422,000 Std 2,436,000 Std 1,726,000 H2S 689,000 (6)

Std 597,000 (5)

Std 776,000 (6)

Thread Type 3 TPI Mod. 3TPI Mod. 3 TPI Mod. 3 TPI Mod.(left or right hand) n/a Square Thread, Left Square Thread, Left Square Thread, Left Square Thread, LeftNumber of Turns

to Full Engagement n/a 7 13 13 13Number of Turns to 7

Expose Washout Ports n/a (Washout Sleeve) 8 8 7

Centric 15 Capacity Chart30” x 20” x 133/8” x 95/8” x 7” Casing Program

(1) Hanger body only for H2S service(2) High pressure system locates washout ports in hangers to enable true metal seal(3) Flow-By areas for running through 48lb/72lb - 13 3⁄8" casing

(4) Flow-By areas are for running through 32lb/53lb - 9 5⁄8" casing(5) For use with 20lb/29lb - 7" casing(6) For use with 32lb/38lb - 7" casing

Centric 15 EX Capacity Chart30” x 16” x 10 3/4” x 75/8” Casing Program

(1) Flow-By areas are for running through 65 lb/84lb 16" - casing(2) Flow-By areas are for running through 32.75lb/60lb - 103⁄4" casing(3) Hanger body only for H2S service

System Variables 30” Hanger 16” Hanger 103/4” Hanger 75/8” Hanger

Hanger Type n/a Load Shoulder Split Ring Split RingService Standard Standard H2S or Standard H2S or Standard

Min I.D. (in.) 20.12 14.99 10.04 6.80Max O.D. (in.) 30.30 21.13 14.50 9.50

Recommended Bit (in.) 20 143/4 97/8 63/4Pressure Rating (psi) n/a 6900 H2S 11,300 H2S 10,000

Std 12,800 Std 11,252Rated Hanging H2S 1,520,000 (3) H2S 926,710

Capacity (lb) n/a 2,897,000 Std 1,710,000 Std 1,042,550Flow-By Running (in.2) n/a 265 11.90/10.50 (1) 6.1/4.8 (2)

Flow-By Landed (in.2) n/a 24 15.40 5.50 (2)

Particle size (in.) n/a 1.25 0.50 0.38Axial Capacity (lb) H2S 2,146,000 (3) H2S 926,710

(running) n/a 2,910,000 Std 2,415,000 Std 1,042,550Thread Type 4 TPI Tapered 3 TPI Mod. 3 TPI. Mod.

(left or right hand) n/a Thread, Left Square Thread, Left Square Thread, LeftNumber of Turns

to Full Engagement n/a 2-1/2 13 13Number of Turns to

Expose Washout Ports n/a n/a 8 8

Centric 15 and 15 EX Capacity Charts

Other programs available upon request.

9

© Cooper Cameron Corporation, Cameron Division, Printed in USA, 12/97, TG/7.5M, WR6415/TC1256

Western Hemisphere

Cameron

PO Box 1212

Houston Texas 77251-1212

Tel 713 939 2211

Fax 713 939 2620

http://www.camerondiv.com

Eastern Hemisphere

Cooper Cameron (U.K.) Ltd.

5 Mondial Way

Harlington

Hayes UB3 5AR

Tel 44 181 9901800

Fax 44 181 9901888

http://www.camerondiv.com

Asia Pacific/Middle East

Cooper Cameron (Singapore) Pte. Ltd.

No. 2 Gul Circle, Jurong Industrial Est

Locked Bag Service No. 3

Jurong Town Post Office

Singapore 2262

Republic Of Singapore

Tel 65 8613355

Fax 65 8616197

http://www.camerondiv.com