cameron ssmc wellhead

SSMC™ Wellhead SystemStandard Snapring Modular Compact Wellhead

TC1277 Single Pages 7/15/99 9:15 AM

S t a n d a r d S n a p r i n g M o d u l a r C o m p a c t ( S S M C ) W e l l h e a d

The SSMC Wellhead System is

a total system designed to

accommodate a variety of

casing programs and working

pressures, while using a

maximum number of inter-

changeable components.

The SSMC wellhead has many

technical advantages over a

conventional wellhead system

including: reduced height,

enhanced safety, savings in rig

time, through BOP opera-

tions, and a decrease in system

cost. In addition, many com-

ponents of the conventional

wellhead are eliminated by

using a single compact hous-

ing for multiple casing and

tubing hangers.

This modular design, with

all internal components inter-

changeable throughout,

means 30% fewer parts and

reduced inventories.

SSMC Wellhead System Features

Enhanced Safety

• Reduced number of BOP connections.

• Minimum penetrations in wellhead, no lock screws.

• Through BOP/diverter operations.

• Fast make-up connectors.

• Mud returns via riser.

Rig Time Savings

• Simple system installation.

• Reduced number, faster BOP connections.

• Weldless diverter connection.

Lower Maintenance

• Reliable, simple, field-proven design.

• No lock screws, minimum leak paths.

• No plastic packing required.

• Continuous control lines.

Reduced Inventory

• Modular design, interchangeable components.

Flexibility

• Wide range of casing programs available with options to land up to two strings of casing as well as tubing in a compact housing.

• Wide range of tubing programs including single, dual and tension tubing hangers.

• Smaller workover BOP tubing hanger options available.

• Identical seal assemblies for each stage with either LS or MEC seals.

• Same internal components used on Cameron Conductor Sharing Wellhead (CSW™)• Field proven for tieback to mudline.

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Time Savings Comparison (Conventional vs SSMC Wellhead)Typical for 13-5/8”/20-3/4” System (30” x 20” x 13-3/8” x 9-5/8” x Tubing)

Description of Operation Conventional SSMC Time Savings30” ConductorWeld diverter connection and nipple up. 9.50 Hours 6.25 Hours 3.25 Hours

20” CasingRun 20” through diverter, land on landing ring, 29.25 Hours 22.00 Hours 7.25 Hoursinstall BOP, versus slip-on weld housing.

13-3/8” CasingWait on cement, spool nipple up, install BOP, 27.00 Hours 15.50 Hours 11.50 Hoursprepare 13-3/8” casing, install slips.

9-5/8” CasingWait on cement, spool nipple up, install BOP, 33.50 Hours 2.00 Hours 31.50 Hoursprepare 9-5/8” casing, install slips.

Total SSMC Time Savings: 99.25 Hours 45.75 Hours 53.5 Hours


SSMC Wellhead System

The SSMC is available in a

range of nominal sizes from

7-1/16” through 18-3/4”

and in working pressures up

to 10,000 psi. The design

and manufacture meets API

6A standards and systems

can be supplied to meet the

complete material class,

temperature rating and PSL

level requirements of this

specification.

FlangeLock Connector

Tubing Hanger

Continuous Control Line

Snapring

Snapring

SRL Seal(Tubing Hanger)

CF Gasket

* LS Annulus Seal(Tubing Hanger)

* LS Annulus Seal(Casing Hanger)

Casing Hanger

Conductor LandingRing

30” Conductor

* MEC Seals are Available as Alternate Seals on Casing and Tubing Hangers

20” Casing

13-3/8” Casing

10-3/4” Casing

Tubing

1/4” Control Line

13-5/8” NominalCompact Housing

SD016743

SD016814

Option without 20” Casing

Typical 13-5/8” Nominal SSMC Wellhead

20-3/4” Nominal Casing Head Housing

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The SSMC wellhead offers a selection in sealing technology which increases versatility and ensures that the wellheadis adaptable for any production environ-ment.

Seals available for the SSMC sealassembly include LS elastomer seals andthe popular, Cameron-exclusive MetalEnd-Cap (MEC) seal.

An additional feature of the SSMC sys-tem is the snapring lockdown incorporat-ed into all elastomeric seal assemblies andtubing hangers.

The seal assembly is run on a threadedrunning tool that retains the snapringuntil landed. Backing off the running toolreleases the snapring which is naturallybiased to spring into the lock groove inthe housing. An overpull ensures the cor-rect engagement of the seal assembly. Theseals are tested via a test port in thehousing prior to retrieving the running

tool. The top face of the seal assemblyserves as a landing shoulder for the nextstage hanger.

S SealThe S seal is a one-piece elastomer inter-ference-type seal used as either an annu-lus seal or tubing hanger neck seal. Ituses continuous 316 stainless steel gartersprings molded into the two exposed corners of the seal to prevent extrusion.

LS SealThe LS seal is a cost-effective, field-proven, elastomer interference seal usedas an annulus seal. The LS seal is a larger,more robust version of the S seal and cantolerate surface imperfections such asthose caused by casing centralizers andlarger running clearances.

S e a l i n g Te c h n o l o g y

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The ability of a wellhead to

withstand pressure is determined

in great part by the integrity of

its sealing system. In addition,

the seals must be designed to

match the service application in

which they are used. That is why

the Cameron SSMC wellhead

system features a choice of

elastomeric seals on seal

assemblies, and metal-to-metal

seals on tubing hanger necks.

Seals available for the SSMC

include metal-to-metal seals in

primary sealing applications, and

either LS elastomer seals or the

Cameron-exclusive Metal End-Cap

(MEC) Seal in the annulus. Metal

seals meet the requirements of

API 6FB fire specifications. All

elastomer seals are available in

premium elastomer materials

developed by Cameron Elastomer

Technology specifically for

oilfield applications.

The MEC seals combine metal

end-caps, premium elastomer

material, and the patented

radial squeeze sealing method to

ensure wellhead dependability,

extended service life and ease of

operation. Hundreds of MEC

seals have been installed in

platform and subsea wellhead

applications.

SSMC Wellhead Seal Selection Chart

Seal Application Type

S Seal Annulus Elastomer Seal with StainlessTubing Hanger Neck Steel Garter Springs

LS Seal Annulus Elastomer Seal with StainlessSteel Garter Springs

MEC Seal Annulus Elastomer Seal withMetal Shells

T Seal Annulus Emergency Elastomer Seal with MetalBack-Up Rings to Prevent Extrusion

SRL Seal Tubing Hanger Neck Metal Lip Seal

CF Gasket Between Connections Metal

Note: All seals are radial interference design


S Seal

SRL Seal

LS Seal MEC Seal

T Seal

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CF Gasket

Metal-End-Cap (MEC) SealMEC seals are radially squeezed, pres-sure-energized elastomeric annulusseals. Metal shells provide a zero gapextrusion barrier that eliminates expos-ing the elastomer material to the corro-sive well bore environment. MEC sealscan tolerate surface imperfections suchas those caused by casing centralizers,MEC seals are available with theCameron-exclusive CAMLAST™ pre-mium elastomer for 350° F service.

T SealThe T seal is a cost-effective, field-proven elastomeric interface seal used as an annulus seal to seal on un-machined casing in emergency situations. It uses square section ringsin the corners to prevent extrusion.

Straight Radial Lip (SRL) SealThe SRL seal is a straight bore sealing,radial interference, pressure-energizedmetal lip seal primarily used on tubinghanger necks.

CF GasketThe CF gasket is used in conjunctionwith the Cameron FastLock andFlangeLock connectors (see page 6) to form a metal-to-metal seal betweenwellhead connections. Its designreduces pressure end-loads and allowslower make-up torque.

SD016803SD016804

SD016807

SD016803

SD016804SD016804

T Seals

S SealsLS Seals

SRL Seals

CF Gasket

MEC Seals


E m e r g e n c y E q u i p m e n t a n d To p C o n n e c t i o n s

FlangeLock™ ConnectorThe FlangeLock connector is designed as a low cost connection for 5000 psi WPapplications. It can be bolted directlyonto FastLock connector hubs. Thisallows for a smaller, more cost-effectiveoverall connection and provides maxi-mum flexibility for drilling andworkover operations.

FastClamp™ ConnectorThe FastClamp connector fits standardclamp hub profiles using conventionalAPI ring gaskets. FastClamp sectionsare pre-installed on the hub via theguide rods to eliminate safety concernsin handling the sections during installa-tion. Low make-up torque increasesease of installation.

Emergency EquipmentThe SSMC wellhead includes a fullrange of casing slip-based emergencyoptions, should the casing “stick” dur-ing installation. With the split compactwellhead, separating the upper andlower sections allows conventional useof slips and facilitates pipe cutting. Inthe non-split wellhead, internal casingcutters are used to prepare the casingfor the seal assembly.

FlangeLock ConnectorFastLock Connector

Slip Suspension for Surface Casing

Slip Suspension for Production Casing

SD016812 SD016812

SD016260SD016220

Fast Make-Up ConnectionsThe SSMC wellhead incorporates twoCameron-exclusive fast make-up meth-ods to connect the Christmas tree to thecompact housing, the FastLock andFlangeLock Connectors. On the splitSSMC wellhead system, the FastClampconnector is used between the upperand lower housing.

FastLock™ ConnectorThe FastLock connector is designed as an efficient replacement for flanged connections on surface wellheads. Its low torque allows for fast make-upand saves rig time. Typically, FastLockconnectors would be installed on landand platform BOP stacks taking fulladvantage of the installation time sav-ings offered by this unique design.

FastClamp ConnectorSD016259

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S p l i t S S M C W e l l h e a d

Split SSMC Wellhead System(Shown with Dual Tubing Hanger)

The Split SSMC Wellhead System

is a split version of the standard

SSMC Wellhead System. This split ver-

sion uses many of the same components

and offers the same advantages as the

standard SSMC, but offers the following

added features:

• Wellhead housing can be supplied

with all annulus equipment installed

and tested. All annulus connections

are located on the upper section of the

system.

• Emergency casing hanger installation

is performed without internal casing

cutting.

• Offers maximum maintainability, as

annular seals, seal faces and wellhead

housing can be replaced or repaired

without disturbing the casing.

SD016815

Dual Tubing Hanger

FlangeLock Connector

ContinuousControl Line

Snapring

Snapring

LS Annulus Seal(Casing Hanger)

Split Housing

FastClamp™

Connector

Annulus Pack-Off

Casing Hanger

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© Cooper Cameron Corporation, Cameron Division, Printed in USA, 7/99, TG/5M, WR10004/TC1277

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


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


Cameron, SSMC, CAMLAST, FastLock, FlangeLock and FastClamp are trademarks of the Cooper Cameron Corporation.


cameron ssmc wellhead

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