SG-5 SG-5XP

SG-5 / SG-5XPSubsea Wellhead System

ABB Vetco GrayABB Oil, Gas & Petrochemicals

Section I

SG-5/SG-5XP Wellhead SystemOverview

SG-5TM / 5XPTM Wellhead Systems

1-1

The ABB Vetco Gray SG-5/SG-5XP is the most widelyused subsea wellhead system in the world today. Thecomplete SG-5 system includes guidance equipment, high-pressure wellhead housing, casing hangers, bore protectors,and running, retrieving, and testing tools.

An SG-5 wellhead system supports the casing stringsinside the subsea wellhead. The high-pressure metal-to-metal SG-LTR packoff seals between the casing hangerand the wellhead housing to isolate the casing bore fromthe annulus for well control. The ABB Vetco Gray H-4hydraulic wellhead connector latches to the mandrel profileon the SG-5 high-pressure wellhead housing. The H-4connector acts as the foundation for the BOP stackthroughout the drilling operations.

v Use in guideline and guidelineless drilling, artificialisland, and Caisson applicationsv 10,000 psi pressure-containing capabilityv 13-5/8", 16-3/4", and 18-3/4" systems availablev Compatible with

subsea satellite trees multiwell subsea template production systems special deep water subsea production systems tieback systems to a fixed platform or TLP

SG-5 Wellhead System Stackup

1-2

A value-conscious operator in todays competitive marketappreciates the many advantages and the reliability of theSG-5 subsea well system:

v Working pressure up to 10,000 psi in combinationwith high casing loadsv Simple tools and procedures inherent in a

torque-set system provide maximum reliabilityand serviceabilityv Minimum number of running, retrieving, and

testing toolsv Field-proven single trip system

Run and land casing hanger, energize, andtest annulus seal all in one tripv Metal-to-metal casing annulus sealsv Casing program flexibilityv Optional full bore casing hanger running toolsv Test with wear bushings in placev All SG-5 casing hangers have the same

external dimensions Will land in any of the three hanger profiles No costly hanger adapters neededv Use one packoff -- the SG-LTR -- throughout

the system Metal-to-metal seal Reliable Retrievablev Field-proven with more SG casing hangers

and packoffs installed worldwide than all othersystems combinedv Clear passage for cuttings and mud while running

the hanger, circulating, and cementing Deep, wide slots for increased flowby in the

casing hanger and packoff nutv Qualified to API 17D requirements

Although the SG-5 is an established and field-provensubsea wellhead system, ABB Vetco Gray continues anongoing program of system refinements. Using field datafrom worldwide offshore operations, SG-5 componentsundergo testing, analyzing, and improving to enhance theirreliability and value to our customers.

SG-5 Wellhead Housing and Casing Hangers

SG-5XP Subsea Wellhead System

1-3

The SG-5XP is a 4-casing hanger system. It has all thestandard SG-5 system features plus the added ability tosupport the additional casing hanger and seal within thehigh-pressure wellhead housing.

The SG-5XP uses a load ring on the 13-3/8" casing hangerto divert casing and test pressure loads directly into thehigh-pressure wellhead housing instead of the 16" casinghanger. When the 16" casing hanger is not used, anadapter attaches to the bottom of the 13-3/8" casinghanger and is run with the hanger in a single trip.

v Positive landing shoulder in the wellhead housing forthe 16" hangerv Protected seal area for 16" packoffv Run, cement, and test the 16" hanger and packoff

in a single tripv Uses standard SG-5 tools with the addition of

the 16" casing hanger running tool, and 4-hangertest plug

SG-5XP Wellhead Housing and Casing Hangers

Section II

System Characteristics

SG-5/SG-5XP Subsea Wellhead System ComponentsUsed a Typical Guideline Drilling Program

SG-5 (18-3/4" System)Temporary Guide Base and Running Tool

Retrievable Drilling Structure and Retrieving ToolRemote Guideline Latch

30" Conductor Wellhead Housing30" Cam-Actuated Running Tool18-3/4" SG-5 Wellhead Housing

18-3/4" Wellhead Housing Cam-Actuated Running Tool18-3/4" LHT Wellhead Housing Running Tool

13-3/8", 9-5/8", and 7" Casing HangersSG-LTR Packoff

Universal Casing Hanger Running Tool13-3/8", 9-5/8", and 7" Full Bore Running Tools

Packoff Running and Retrieving ToolStandard Plug-Type Test Tool18-3/4" Nominal Seat Protector

13-3/8", 9-5/8", and 7" Wear Bushings18-3/4" Seat Protector and Wear Bushing Running and Retrieving Tool

18-3/4" Wellhead Corrosion Cap

SG-5XP (Alternative/Additional Equipment)18-3/4" SG-5XP Wellhead Housing

16" Casing Hanger and Running Tool16" SG Packoff

16" Full Bore Running Tool16" Wear Bushing

13-3/8" SG-5XP Casing HangerPlug-Type Test Tool

2-1

136"

46"

33"

Temporary Guide Base

The ABB Vetco Gray temporary guide base (TGB) is thefirst piece of equipment run when spudding a subsea well.It anchors the guidelines and serves as a foundationstructure throughout the drilling phase. Run with thetemporary guide base running tool, the TGB is used as atemplate to drill the 36" hole. It may not be necessary touse a TGB if the conductor pipe is jetted into place.

v 100 sq. ft. bearing areav Four guideline attachment points on 6-ft. radiusv Four removable anchor spikes penetrate into the sea

floor to prevent rotationv 46" I.D. center with J-slot preparationv Conical landing ring for landing gimbal base of drilling

guide structurev Compartmented construction and octagon in shape

with eight open cavities for holding weight materialv Can be reworkedv Stack Up: 33" above mudlinev Weight: 5,000 lb. emptyv Misalignment: Funnel allows for compensation of

bottom slope up to 5

2-2

45-1/2"

47-1/8"

167-3/4"

Runs the temporary guide base to the mudline on drill pipe.

v Gimballed stem accommodates minor sloping on theocean floor

v Four J-lugs engage mating J-slots in the temporaryguide base

v Can be reworkedv Weight: 1,835 lb.v Top Connection: 4-1/2" I.F. boxv Maximum Misalignment: 10 from level in

any directionv Tension Capacity: 150,000 lb. on gimbal bolts

Temporary Guide Base Running Tool

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2-4

Retrievable Drilling Guide Structure

The ABB Vetco Gray retrievable drilling guide structure isa guide base fitted with a landing profile for, and run with,the 30" wellhead housing. The guide structure providesstructural support for the 30" housing during cementingand is the primary guidance system for the BOP stackduring drilling. The guide structure has a diverless latch forretrieval with the guide structure retrieving tool. A latchring, attached to four collet-type pin mechanisms, releasesfrom the 30" support plate which can be either a solidgimbal, split gimbal, or a split flat plate. The collets securethe 30" support plate and the guide structure together asan assembly. When a temporary guide base is not used,the gimble can be replaced with the split plate. This plateis secured to the base with chains and retrieved with thebase.

v ROV releasable guide posts on standard 6-ft. radiusv Guide post tops accept the remote guideline latchv 30" housing locks into center ring and gimbal

assembly with snap ringv Integral anti-rotation devicev Guide structure parts are retrievablev Retrieved from the wellhead assembly with the

retrieving tool or by divers/ROVv Can be retrieved with corrosion cap in placev Optional level indicatorv Can be reworkedv Weight: 9,340 lb.

34-1/2"

94-1/4"

131-3/4"

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Retrievable Drilling Guide Structure

2-6

102-7/8"

39-3/4"

70"Latches onto the retrievable drilling guide structure remoterelease ring to unlock the guide structure from the 30"housing and recover to the surface. Circular in shape withdetachable centralizing fins. Tool can retrieve drillingguide structure with corrosion cap installed on the wellhead.Uses spring-loaded latch with J release.

v Can be reworkedv Weight: Approximately 4,000 lb.v Top Connection: NC50 (4-1/2" I.F.) boxv Bottom Connection: NC50 (4-1/2" I.F.) pinv Tension Capacity: 100,000 lb.

Retrievable Drilling Guide Structure Retrieving Tool

2-7

8-5/8"

21-1/4"

2-1/2"

Connects a guideline to a post top and provides diverlessrelease/establish ability. Using a remote release connector,it can be run with guideline remote replacement tool orROV.

v If a guideline parts, the guideline cutting tool shearsthe parted line allowing the remote guide line latch tobe established on the post top

v Automatically latches when mated to a remote guidepost

v Lowering a weight (go-devil) down the guidelinereleases the latch

v If a post top equipped with a remote guideline latchsuffers a parted guideline, the running tool is jettedinto position (after cutting parted line) and the latchrecovered without the use of divers.

v Can be reworkedv Stack Up: 6" on post topv Weight: 197 lb.v Top Connection: Socket to suit guide wire size

(3/4" to 1-1/4")v Tension Capacity: 50,000 lb.

Remote Guideline Latch - GL4

2-8

30" Conductor Wellhead Housing

Lands in and run with the retrievable drilling guide structure,and supports the conductor string. Run with 30" cam-actuated housing running tool.

v Internal profile accepts the ABB Vetco Gray high-pressure wellhead housing

v External profile accepts drilling/production guide basev External slot prohibits rotation of guide basev Cements ports allow exit of surface casing cement

returnsv Lower end has butt-weld prep for welding to

conductor housing extensionv Elevator shoulderv Can be reworkedv Weight: 1,989 lb.v Bending Capacity: Limited by 30" casing

35-3/4"29-3/8"

28"

26-1/2"

30" Cam-Actuated Running Tool

49"

3-1/2"

29-1/4"

Runs the 30" housing, drilling guide structure, and30" casing.

v Visual Lock and Unlock indication stampedinto stem

v With left-hand rotation of stem, eight rams, with dual45 profiles, engage internal wellhead profile

v Rams retract with right-hand rotation of stem andoverpull of tool

v Six removable 3" bull plugs allow conductor stringfilling or accommodate returns when jetting

v Can be reworkedv Weight: 3,000 lb.v Top Connection: 6-5/8" reg. box or 4-1/2" I.F. boxv Bottom Connection: 4-1/2" I.F. pin (NC 50)v Tension Capacity: Limited by drill pipe

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18-3/4" High-Pressure Wellhead Housing

The 18-3/4" high-pressure wellhead housing lands in the30" conductor housing on the ocean floor, and suspendsthe 20" casing string. The internal preparations accept upto three casing hangers and packoff assemblies. Thehousing has an external profile to receive the H-4connector on the BOP stack.

v Internal profile in upper housing body availablefor either cam-actuated or left-hand threadedrunning tool

v Internal lockdown groove accepts a 10,000 psitubing hanger in the 7" casing hanger position.

v External profile mates with H-4 connector onBOP stack

v Stainless steel prep for H-4 wellhead connectorVX ring gasket.

v Incorporated secondary VT seal gasket preparation

v Lower housing body has butt-weld for heavy-walledhousing extension

v Housing extension equipped with Squnch Joint orRL-4S connector for quick, easy makeup to thecasing string

v Locks into the 30" conductor housingv Pre-loaded 18-3/4" to 30" connection

system availablev Lower reaction ring reduces bending stresses in

20" casing by transferring bending loads to the30" housing.

v Can be reworkedv Stack Up: 35-1/4" from top of 30" housingv Weight: 5,350 lb. without extensionv Maximum Internal Working Pressure: 10,000 psi

27"

18-5/8"

35-1/4"

20-7/8"

67-1/2"

17-9/16"

2-10

2-11

18-3/4" High-Pressure Wellhead Housing Cam-Actuated Running Tool

60"

18-11/16"3 "

Runs the 18-3/4" high-pressure wellhead housing and20" casing.

v Seals in high-pressure housing for cementingoperations

v Visual Lock and Unlock indication stampedinto stem

v With left-hand rotation of stem, eight rams, with dual45 profiles, engage internal wellhead profile

v Tool disengages with right-hand rotation of stem andoverpull of tool

v Removable plugs facilitate filling the casing stringv Check valve available to allow the casing bore to adjust

for ambient pressure changesv Can be reworkedv Weight: 1,369 lb.v Top Connection: 6-5/8" reg. box or 4-1/2" I.F. boxv Bottom Connection: 4-1/2" I.F. (NC 50) pinv Tension Capacity: Limited by drill pipe

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18-3/4" LHT High-Pressure Wellhead Housing Running Tool

Runs the 18-3/4" wellhead housing and 20" casing string.

v Blunt start, modified square thread for high strength andeasy makeup

v Removable plugs to facilitate filling the casing stringv Check valve available to allow the casing bore to adjust

for ambient pressure changesv Simple one-piece tool provides operational reliability

v Can be reworkedv Weight: 1,350 lb.v Top Connection: 4-1/2" I.F. (NC50) box

(6-5/8" box up available)v Bottom Connection: 4-1/2" I.F. (NC 50) pinv Maximum Internal Working Pressure: 3,000 psiv Tension Capacity: Limited by drill pipe

5"

81-1/2"

22"

3 "

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SG-5 13-3/8", 9-5/8", and 7" Casing Hangers

v Removable lock ring on casing hanger body providesoptional lockdown

v Internal left-hand running threads allow right-handrelease of the casing hanger running tool

v Accepts torque-actuated packoffv Flowby provision integral to casing hanger bodyv Hanger assembly can be run separately, if desired

The ABB Vetco Gray SG-5 casing hanger assembliesconsist of a casing hanger body and lockdown ring. Toreduce trip time, the packoff assembly is run with the casinghanger, set, and tested once cementing operations arecompleted. SG-5 casing hangers are available in a widevariety of casing thread sizes and threadforms.

18-3/4" x 13-3/8" Casing Hanger

Suspends the 13-3/8" casing string and provides internalleft-hand thread running profile and sealing area.

v Can be reworkedv Weight: 555 lb.v Bottom Connection: 13-3/8" customer specifiedv Internal Working Pressure: 10,000 psiv Flowby Area, landed: 13 sq. in.

12-3/8"

18-1/2"

18-19/32"

2-14

18-3/4" x 7" Casing Hanger

8-13/16"

19-1/8"

18-19/32"

6-3/8"

19-1/8"

18-19/32"

18-3/4" x 9-5/8" Casing Hanger

Suspends the 9-5/8" (or 10-3/4") casing string and providesinternal left-hand thread running profile and sealing area.

v Can be reworkedv Weight: 570 lb.v Bottom Connection: Customer specifiedv Internal Working Pressure: 10,000 psiv Flowby Area, landed: 13 sq. in.

Suspends the 7" (or 7-5/8") casing string and providesinternal left-hand thread running profile and sealing area.

v Can be reworkedv Weight: 660 lb.v Bottom Connection: Customer specifiedv Internal Working Pressure: 10,000 psiv Flowby Area, landed: 13 sq. in.

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SG-LTR Packoff Assembly

The annular seal is made up on an SG casing hanger and theassembly is run in a single trip. After cementing, the packoffis energized and tested prior to retrieving the casing hangerrunning tool.

v Used for all casing hangers within a system,except for the 16" SG-5XP hanger

v Integral flowby slotsv Maximum seal over extended periods, even in

high-pressure holesv Low torque-set packoff actuation

v Positive metal-to-metal seal backed up bypre-energized elastomer seal

v W-shaped slotted metal insert enhances lower lipretrievability up to 100,000 axial overpull

v Damage tolerant: successful testing to 15,000 psiwith scored housings and damaged seals

v Limited reworkv Weight: 186 lb.v Maximum Working Pressure: 15,000 psi

16-13/32"

14-27/32"

18-19/32"

Universal Casing Hanger Running Tool

2-16

Runs all sizes of SG-5 casing hangers and casing strings,13-3/8" and smaller, seals during cementing, sets packoffand allows testing of the packoff assembly and BOP stack.

v Single trip to run, land, and cement the casing string,actuate and test the packoff

v Centralizer sleeve helps position the casing hanger/packoff assembly and running tool concentrically in thewellhead housing

v Simple tool provides reliable operation and easymaintenance

v No shear pins or sliding sleeves to set or resetthe packoff

v Can be reworkedv Weight: 1,862 lb.v Top Connection: 4-1/2" I.F. (or 6-5/8" reg.

threads available)v Bottom Connection: 4-1/2" non-upset eight round

box for subsea cement launching assemblyv Maximum Load Rating: Limited by drill pipe

18-9/16"

3 "

66-1/2"

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Full Bore Casing Hanger Running Tools

The full bore casing hanger running tool uses a casing stringinstead of drill pipe, and can support heavier casing stringsbelow the hanger because of higher axial load capacity.Provides full bore access between running string and casingstring in the well.

v Surface release plugs offer the possibility of usingmultiple stage cementing techniques

v Full bore casing hanger running tool uses thesame casing hanger and packoff assemblies asthe universal casing hanger running tool

v Removable torque keysv Can be reworked

18-3/4" x 13-3/8"Full Bore Running Tool

Runs the 13-3/8" casing hanger/packoff assemblyand casing string, and provides through-bore access forcement plugs.

v Weight: 1,389 lb.v Top Connection: 13-3/8" customer specified

18-9/16"

63-1/8"

12-3/8"

2-18

18-3/4" x 9-5/8"Full Bore Running Tool

18-3/4" x 7"Full Bore Running Tool

Runs the 9-5/8" casing hanger/packoff assemblyand casing string, and provides through-bore access forcement plugs.

v Weight: 1,363 lb.v Top Connection: 9-5/8" customer specified

Runs the 7" casing hanger/packoff assembly andcasing and string, and provides through-bore access forcement plugs.

v Weight: 1,610 lb.v Top Connection: 7" customer specified

18-9/16"

58-3/8"

8-13/16"

18-9/16"

56-11/16"

6-3/8"

2-19

Packoff Running and Retrieving Tool

18-9/16"

67-3/8"

Runs, retrieves, and tests all SG packoff assemblies. Self-contained hydraulic tool. By changing balance sleeve,functions with SG-5XP 16" hanger and packoff.

v Spring-loaded drive keys torque/un-torque packoffv Can be reworkedv Weight: 2,230 lb.v Top Connection: 6-5/8" regular threadsv Bottom connection: 3-1/2" API I.F. (NC 38) pinv Maximum Internal Working Pressure: 1,200 psiv Tension Capacity: 120,000 lb. (lock pins)

2-20

Plug-Type Test Tool

18-9/16"

49-1/2"

3 "

Allows periodic testing of the wellhead housing, BOP, andthe packoff seals. The tool initially seals in the bottom of thewellhead housing and subsequently on an internal sealsurface of each casing hanger.

v Tests 18-3/4" high-pressure wellhead housing withno hangers installed

v Tests 13-3/8" through 7" hangersv Weight: 1,350 lb.v Top Connection: 4-1/2" (NC 50) API I.F. boxv Bottom Connection: 4-1/2" (NC 50) API I.F. box

3"

2-21

Seat Protector and Wear Bushings

18-3/4" Nominal Seat Protector

Bore: 17-9/16" Weight: 375 lb.

9-5/8" Wear Bushing

Bore: 8-13/16" Weight: 449 lb.

13-3/8" Wear Bushing

Bore: 12-3/8" Weight: 1,460 lb.

7" Wear Bushing

Bore: 6-3/8" Weight: 700 lb.

18-5/8"

47"

17-9/16" 12-3/8"

18-9/16"

42-5/16"

18-9/16"

23-3/8"

8-13/16" 6-3/8"

18-9/16"

26-1/2"

The 18-3/4" seat protector and wear bushings protect theinternal bore sealing surfaces of the wellhead and casing

hangers. Run with the seat protector and wear bushingrunning and retrieving tool.. Can be reworked.

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Seat Protector and Wear Bushing Running and Retrieving Tool

Runs and retrieves the subsea wellhead wear bushings,seat protector, and corrosion cap.

v Self-contained hydraulic toolv Collapsing lock ring and spring-loaded torque pinsv Dart-actuated available where washing wear bushing

and wellhead is desired

18-9/16"

50 "

v Weight: 915 lb.v Top Connection: 4-1/2" (NC 50) API I.F. boxv Bottom Connection: 4-1/2" (NC 50) API I.F. pinv Internal Working Pressure: 1,000 psiv Tension Capacity: 80,000 lb. on torque pins

2-23

18-3/4" Wellhead Corrosion Cap

20"

16-1/16"

66 "

32-1/2"

Protects the interior seal surfaces and exterior profile of thewellhead during period of temporary abandonment. Once inplace, a corrosion inhibitor can be pumped into the wellheadto displace seawater or drilling fluid and provide a corrosion-resistant bath for seal areas. The retrievable drilling guidestructure can be retrieved after cap is set.

v Weight-set and retrieve with 3,000 lb. overpullv Stack Up: 31" above top of wellheadv Weight: 1,770 lb.

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SG-5XP Subsea Wellhead System Components

The SG-5XP wellhead system has all the standard SG-5system features plus the added ability to support four casinghangers within the SG-5XP 18-3/4" high-pressure wellheadhousing. The system uses the 16" casing hanger, 16" SGseal, 16" wear bushing, and a specifically-designed 13-3/8"casing hanger that transfers casing and test pressure loadsdirectly into the high-pressure wellhead housing, instead ofthe 16" casing hanger. If the 16" hanger is not used, an

adapter is attached to the bottom of the 13-3/8" casinghanger and the two are run together in a single trip.

v Run, cement, and test the 16" hanger in a single tripv Runs on standard SG-5 tools with the addition of the

16" casing hanger running tool

18-3/4" SG-5XP Wellhead Housing

27"

40"

80-7/8"

92-3/8"

17-9/16"

Configured like the standard SG-5 housing except fordimensions and the internal preparation for the 16" casinghanger below the 13-3/8" position.

v Weight: 7,239 lb.v Maximum Internal Working Pressure: 10,000 psi

2-25

15-1/4"

21"

18-19/32"

18-9/16"6-3/8"

65-1/2"

18-3/4" x 16" SG-5XP Casing Hanger 16" Casing Hanger Running Tool

Suspends the 16" casing string and provides internalleft-hang thread running profile and sealing area.

v Weight: 390 lb.v Bottom Connection: 16" customer specifiedv Maximum Working Pressure: 5,000 psiv Flowby Area, landed: 6.6 sq. in.

Runs the 16" SG-5XP hanger, cements, sets the 16" SGpackoff, and pressure tests the assembly in one trip.

v Weight: 1,870 lb.v Top Connection: 4-1/2" I.F.v Bottom Connection: 4-1/2" non-upset eight round box

for subsea cement launching assemblyv Maximum Load Rating: Limited by drill pipe

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16" SG-5XP Wear Bushing16" SG-5XP Full Bore Running Tool

Runs the 16" casing hanger/packoff assembly and casingstring, with though bore access for cement plugs.

v Weight: 1,100 lb.v Top Connection: 16" customer specifiedv Maximum Working Pressure: 5,000 psiv Tension Capacity: Limited by drill pipe

18-9/16"

57-13/16"

14-3/4"

Protects the internal bore sealing surfaces of the SG-5XPwellhead housing and the 16" SG-5XP casing hanger.

v Weight: 1,400 lb.v Can be reworked

15-1/4"

67-1/8"

18-19/32"

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13-3/8" SG-5XP Casing Hanger

12-3/8"

25-3/4"Unset

25"Set

18-19/32"

Same features as the standard SG-5 casing hangers exceptan expanding load ring is incorporated to divert the casingand pressure end loads to the housing.

v Suspends the 13-3/8" casing string and providesinternal left-hand thread running profile andsealing area

v Run and test with standard SG running andtesting tool

v Can be reworkedv Weight: 600 lb.

2-28

SG-5XP Plug-Type Test Tool

18-9/16"

63-1/2"

3 "

Used to periodically test the wellhead housing, BOP, and16" through 7" packoff seals.

Section III

Abreviated Running Procedure for aTypical SG-5

Guideline Drilling Program

3-1

Abbreviated Running Procedure for a Typical SG-5Guideline Drilling Program

(Consult your ABB Vetco Gray Service Representative for specific instructions for your particular equipment.)

Install the Temporary Guide Base

3. Install the running tool into the J-slots of the guidebase by left-hand rotation.

4. Install guidelines into the four pad eyes of thetemporary guide base.

5. Run and land the temporary guide base on theocean floor.

If the conductor pipe, conductor housing, and permanentguide base structure are jetted into place, it may not benecessary to use a temporary guide base.1. Set the temporary guide on the spider beams.2. Fill the compartments with the appropriate

weight material.

Temporary Guide Base and Running Tool

3-2

Install the Retrievable Drilling Guide Structure and 30" Wellhead Housing

After the temporary guide base has been landed and the guidelines tensioned, the 36" hole is drilled to accommodatethe 30" conductor pipe. The 30" wellhead housing, conductor string, and retrievable drilling guide structure are run asan assembled unit in either pre-drilled or jetting operations.

Jet the 30" Conductor

Where the bottom conditions permit, the 30" conductorcan be jetted into place. The temporary guide base is notusually used and the 30 wellhead housing, 30" conductor,retrievable guide structure, and guide lines are run in oneoperation.

1. Attach the 30" wellhead housing to the last joint ofconductor pipe and make up the 30" cam-actuatedrunning tool. (Remove the bull plugs on the 30"cam-actuated tool for jetting returns.)

2. Land the 30" wellhead in the guide structure andremove the cam-actuated running tool.

3. A special jetting tool or bit is spaced out in the 30"conductor so that it is 6" outside to 12" inside thebottom of the open-ended conductor. Make up thelast joint of the jetting string to the bottom of thecam-actuated running tool.

4. Lower the running tool through the rotary and makeup in the 30" wellhead housing.

5. Lower the 30" conductor to the mudline and beginthe jetting operation.

6. Continue jetting until the conductor reaches thedesired depth.

Run 30" Conductor in Pre-Drilled Hole

1. Assemble the guide structure if necessary andinstall the guide posts with the lock pins provided.

2. Move the guide structure into the moon poolarea and install the guidelines. Make up and runthe conductor pipe through the guide structure.Running large O.D. conductor pipe is fasterwhen equipped with Squnch Joint or RapidLockTMRL-4 connectors.

3. Attach the 30" wellhead housing joint to the lastintermediate joint of conductor pipe and make upthe 30" cam-actuated running tool.

4. Land the 30" wellhead housing in the guide andremove the cam-actuated running tool.

5. Run a drill pipe stringer into the conductor stringand make up to the bottom of the running tool.

6. Lower the running tool through the rotary and makeup into the conductor wellhead housing.

7. Fill the conductor with seawater through the portson the running tool. (Replace the bull plugs prior tolowering the housing to the ocean floor.)

8. Run and land the entire assembly (retrievabledrilling guide structure, 30" wellhead housing, andrunning tool) in the temporary guide base on theocean floor.

9. Circulate the hole and cement the conductorin place.

10. Release the running tool with right-hand rotationand retrieve to the surface.

3-3

Running the retrievable drilling guide structure, 30" wellhead housing, and30" conductor string into the temporary guide base and pre-drilled hole.

Jetting the 30" Conductor

3-4

3-5

Drill the 26" Hole with Marine Riser and Hydraulic Latch

3. At the surface, install an ABB Vetco Gray KFDSTMdiverter in the Marine Riser System to exhaust anyflow encountered.

4. Drill out and condition the 26" hole.5. When it has been determined there is no abnormal

pressure in the well bore, retrieve the hydrauliclatch to the surface.

After the 30" conductor is run, shallow formations or localgovernment regulations may require drilling the 26" holewith returns to the drilling vessel. When these conditionsoccur, an ABB Vetco Gray Marine Riser System andHydraulic Latch are used.1. Install the hydraulic latch and Flex Joint on the

marine riser.2. Run, stab, and lock the hydraulic latch into the

30" wellhead housing on the ocean floor. (The latchlocks into the internal 30" cam-actuated runningtool profile.)

Hydraulic Latch

Install the High-Pressure Wellhead Housing

1. Install the running tool (cam-actuated or threaded)in the high-pressure wellhead housing.

2. Make up and run the 20" casing using RL-4Scasing connectors.

3. With the last joint of 20" casing in the rotary table,make up the high-pressure wellhead housingequipped with a 20" Squnch Joint or RL-4Scasing connector.

4. Lower the assembly and land in the 30" wellheadhousing using the motion compensator.

5. Pick up approximately 30,000 lb. over the stringweight to verify that the high-pressure wellhead islocked to the 30" wellhead housing.

6. Circulate and cement the casing as required.Returns are ported through the 30" wellheadhousing and guide structure.

7. Release the running tool from the high-pressurehousing with right-hand rotation, and retrieve therunning tool to the surface.

3-6

High-pressure wellhead housing landed in the 30" wellhead housing.

3-7

The remotely-operated hydraulic H-4 wellhead connectorconnects the BOP stack to the high-pressure wellheadhousing.Pull the seat protector, if run in the wellhead, before testingthe BOP stack with the universal plug-type BOP test tool.

After a successful BOP stack test, pull the test plug, re-runthe seat protector in the wellhead housing using the seatprotector/wear busing running and retrieving tool.

Run the BOP Stack with the H-4 Wellhead Connector

BOP stack, landed on the high-pressure wellhead housing, with plug-type test tool installed.

3-8

Prepare the Casing Hanger and Packoff for Installation

Prior to running the next casing string, assemble the casinghanger, universal casing hanger running tool, and thepackoff along with the subsea-released cementing plugs.1. Place the casing hanger in a vertical position, and

rotate the packoff onto the casing hanger until thepackoff stops. (Remove the lock ring if the hangerwill not be locked down.)

2. Back the packoff off until the bottom of the packoffis 2-5/8" from the packoff landing shoulder on thecasing hanger. This space is known as the initialstandoff.

3. Make up the subsea cementing plugs to theuniversal casing hanger running tool.

4. Stab the casing hanger running tool into the casinghanger, aligning the tool torque keys with the milledslots on the packoff.NOTE: Measure from the bottom of the centralizersleeve to the packoff landing shoulder and recordthe dimension. After make up, check this dimen-sion. With full tool/hanger engagement, thisdimension should be 1-1/2 to 1-3/4 less.

5. Make up with chain tongs until snug (approximately3 to 4 turns to the left).NOTE: As the tool makes up with the casinghanger, it simultaneously backs off the packoff, withthe ideal final standoff being 4-1/8" to 4-1/4". Thismeasurement is critical to assure sufficient flowbyduring circulating and cementing operations.

6. Install a protector on the packoff and set theassembly aside.

Universal Casing Hanger Running Tool,Packoff, and Casing Hanger

3-9

Run the Casing Hanger and Packoff

1. Prior to running each casing string, remove thenominal seal protector or wear bushing with theseat protector/wear bushing running/retrieving tool.

2. Run the casing and make up the casing hangerassembly to the last joint of casing.

3. Run and land the casing hanger assembly withmotion compensator set to compensate the runningstring upon landing in the housing.

4. Circulate and cement according to the drillingprogram.

5. Rotate the running tool to the right approximatelyfour turns to disengage the running tool from thecasing hanger running threads.

6. Continue to rotate approximately 4-1/4 turns to theright until a torque build-up is experienced and theSG-LTR metal-to-metal seal is actuated.

7. With the universal casing hanger running toolstill in place in the hanger, test the seal and theBOP stack.

8. After a successful test, retrieve the running tool tothe surface.

Step 1Install the casing hanger tool in the hanger/packoffassembly.

3-10

Step 2 Step 3Rotate to the left, fully seating the tool in the hanger and thepackoff is in running position.

Run and land the hanger in the wellhead.

Step 4 Step 5Hanger and tool landed. Cement returns flowby. Hanger landed, packoff set and tested.

3-11

Run and Retrieve Seat Protector and Wear Bushings

One tool runs and retrieves the nominalseat protector and wear bushings.

Before drilling out, a wear bushing must be installed in thehigh-pressure wellhead housing to protect the casinghanger and the remaining seal profiles in the wellhead.Wear bushings are run with the same tool as the nominalseat protector.

Install the Wear Bushing

1. Stab the running tool into the wear bushing.2. Carefully lower the wear bushing and land on

the packoff.3. Rotate the running string slowly to the right until the

pins of the wear bushing drop into the vertical slotsof the packoff.

4. Continue rotating to J the wear bushing into thepackoff until a torque build up occurs. This actionalso un-Js the wear bushing from the tool.

5. Maintain this slight right-hand torque and pick upon the string, using the motion compensator toconfirm that the wear bushing J-pins are lockedinto the packoff.

6. Let up on the string and pressure the running stringto 800 psi maximum to release the lock ring of thetool from the lock ring groove in the wear bushing.

7. Retrieve the tool back to the surface. All sizes arerun in the same manner.

Retrieve the Wear Bushing

1. Lower the running tool into the hole and stab intothe wear bushing.

2. Adjust the heave compensator to support therunning string weight less 2,000 lb.

3. Rotate the running string to the left to engage thetorque pins of the tool with the J-slots of the wearbushing and release the wear bushing pins fromthe packoff J-slots.

4. Retrieve the tool and wear bushing to the surface.

3-12

3-13

Retrieve and Reinstall a Packoff

Retrieve

1. Lower the packoff retrieval and reinstallation toolinto the wellhead and land on top of the packoffusing the motion compensator.

2. Rotate the tool to the right to drop the J-pins intothe vertical slots of the packoff. Turn an additional1/8 to engage the spring-loaded torque keys in thepackoff vertical slots.

3. Rotate the tool to the left approximately 12 turnsto remove the packoff assembly.

4. Retrieve the tool and packoff to the surface. 5. Run the mill and flush tool to clean the seal area.

Reinstall

6. Install a new packoff on the running tool and runinto the wellhead.

7. Land the packoff on the casing hanger and rotatethe tool two turns to the right.

8. Pull up on the running string to verify that thepackoff made up to the casing hanger, slack off andcontinue rotating 10 turns to the right.

9. When the packoff is torqued to requirements,pressure test.

10. After a successful test, bleed off the test pressureand apply approximately 800 psi to the tool toretract the torque keys.

11. Rotate 1/8 turn to the left until a slight torque buildup is noticed and retrieve the tool to the surface.

Packoff Retrieval and Reinstallation Tool

3-14

Corrosion Cap

If a well proves to be of commercial significance, it can becapped until the operator wishes to complete it. The ABBVetco Gray diverless corrosion cap temporarily protectssuspended wells.Run on the seat protector/wear bushing running andretrieving tool, the corrosion cap simply stabs over thewellhead, and automatically locks to the outer H-4 profile onthe wellhead housing.

A diver-assist corrosion cap can be run on a tugger line andsecures to the wellhead by manually installing three bolts.With either corrosion cap in place, a bio-degradable corrosioninhibitor can be pumped into the wellhead displacingseawater and drilling fluid and providing a protective bathfor the critical sealing areas of the wellhead.The retrievable drilling guide structure can be retrieved withthe corrosion cap in place.

Retrievable drillling guide structure retrieved and corrosion cap installed on a suspended well.

Section IV

Additional Equipment for use with theSG-5/SG-5XP Systems

Additional Equipment for Use With the SG-5/5XP Systems

4-1

Hydraulic Latch Assembly

v O-ring on lower body assembly provides a sealbetween the latch and the 30" wellhead housing.

v Four hydraulic cylinders move the actuator sleevedownward, radially forcing eight locking dogs out intothe 30" cam-actuated running tool profile.

v Available with either two- or four-arm guide framefitted with guide cones.

v Optional flange or mandrel top profile.

H-4 Wellhead Connector

v Hydraulic cylinders have separate primary andsecondary hydraulic ports.

v Locking dogs encompass 356 contact resulting inuniform distribution of bending and tensile loads overa large area of the wellhead.

v Indicator rod for visual indication of cam ring position.v Stainless steel-lined VX gasket ring groove assures

a pressure-type seal.v Available with clamp, studded, or flange top

connection, in a variety of sizes and pressure ratings.

4-2

30" Wellhead Housing Runningand Drill-Ahead Tool

Used to run the 30" wellhead housing and drill pipe inconditions where the conductor can be jetted in, the toolmakes up to the internal cam profile of the 30" wellheadhousing.The jetting string extends below the drill-ahead tool andcarries the 26" BHA. Once the conductor reaches totaldepth, the stem of the tool is released by right-handrotation of the drill pipe. The body of the tool unlocks fromthe stem and remains in place, centralizing the drill string.The drill pipe continues downward and drilling for the 26"hole can begin. Once the 26" hole reaches TD, the drill pipeis picked up and the stem of the tool rises, retrieving thebody of the tool from the 30" wellhead housing to thesurface.

18-3/4" BOP Isolation Test Tool

Tests the BOP stack while it is landed in the high-pressurewellhead housing. The tool lands on a wear bushing orcasing hanger and seals in the housing bore, isolating thecasing hanger packoff assemblies from test pressure.

Utility Guide Frame

v Guides equipment between the drilling vessel andthe temporary guide base or retrievable drilling guidestructure before the marine riser is installed.

v Side door center section available with spacers,accommodates both drill collars and drill pipe.

Universal Mill and Flush Tool

Removes junk, cement, formation cuttings or gumbo fromthe area between the casing hanger and wellhead housing.Internal fluid slots run between the running string bore andthe cutting teeth on the bottom of the tool providing aflushing action to remove loosened materials.

4-3

Reinstallable Guide Base

Run and installed subsea on an existing wellhead for re-entry or guidance of production/completion equipment.v Guide Base retrievablev Posts retrievable

v Hydraulic running tool latches the guide base to theexternal profile of the 30" wellhead housing.

v Safety lock key on the running tool prevents the toolstem from accidentally becoming unjayed duringhandling.

4-4

Emergency Seal Assemblies

If the emergency packoff does not seal or cannot be run, then an emergency seal is used. Threads on the lower O.D.profile engage the casing hanger and the elastomer seals seat between the seal assembly and casing hanger as wellas the I.D. of the wellhead housing. Run with the running and retrieving tool.

Emergency EquipmentThe SG-5/5XP emergency sealing system consists of an emergency packoff, a 13-3/8" emergency seal assembly,and a 9-5/8" emergency seal assembly.

Emergency Packoff

Used to seal the casing annulus in the event the primaryseal area is unusable. Lands on a casing hanger shoulderabove the normal seating position, seats against thisshoulder with O-rings and against the wellhead housingwith a special SG-type seal. Shorter than the standardpackoff assembly, the emergency packoff will not interferewith subsequent casing hangers. Run with the packoffrunning and retrieving tool.

13-3/8" Emergency Seal Assembly 9-5/8" Emergency Seal Assembly

4-5

Section V

Tieback Systems

Surface Wellhead

Wellhead Cellar Deck

Subsea Wellhead

20" Tieback13-3/8" Tieback9-5/8" Tieback

Tieback Systems

The SG-5/5XP wellhead system is easily adapted for usewith a fixed platform or TLP tieback completion system. Byusing the SG-5/5XP 9-5/8" tieback hanger, the productionstrings can be tied back to the platform. The standard ABBVetco Gray tieback system locks and seals the 20",13-3/8", and 9-5/8" casing strings into the SG-5/5XPwellhead system. The 9-5/8" production string has a fullmetal-to-metal seal. The initial tieback riser lands on theSG-5/5XP wellhead, makes up without rotation while thefunnel adapter of the tieback system accommodates angular

misalignment and lateral offset. The wellhead equipmentused for tieback systems is standard, except for the lastcasing hanger installed. This casing hanger contains aninternal profile for the SG seal preparation and specialtieback threads. The last casing string is threaded into thecasing hanger by the internal lockdown sub on the adapter,so the casing strings are not rotated. A modified wearbushing on threaded insert protects the sealing and lockingareas.

5-1

20" External-lock Tieback Connector20" Internal-lock Tieback Connector

5-2

13-3/8" Tieback Adapter 9-5/8" Tieback Torque Tool

5-3

5-4

9-5/8" Tieback Adapter withMetal-to-Metal Seal 9-5/8" Tieback Casing Hanger

9-5/8" Tieback Wear Bushing

5-5