Subsea Capital Equipment

Rig & equipment selection continued

Peter AirdNovember 2008

Sub Sea Capital drilling equipment1. Diverter2. Spider / Gimbal3. Riser Coupling4. Upper Flex Joint5. Telescopic Joint6. Tensioning Ring7. Intermediate Flex Joint8. Termination Joint9. Riser Adapter10. Single Flex Joint11. BOP Connector12. Wellhead Connector13. Wellhead

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Standard Diverter system

Pressure rating

Internal diameter

Seals

Testing

Limitations!

Handling gas at surface

1. Deepwater diverter system

Used on the majority of floating rigs

Complete open-hole shutoff with 20 through-bore

Rated 1,000 psi for closure on 5 drill pipe; 500 psi for closure on open hole

10 second closing time on pipe or open hole

Housing accommodates large diameter riser buoyancy modules

High capacity systems available for supporting the Riser String from Diverter Housing in emergency hang-off situations

2.1 Spider

Hydraulic-gate riser spider is used when running or retrieving riser joints through the rotary table

Riser handling spider supports the riser string on manual or hydraulically operated sliding dogs

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2.2 Riser Gimbal

Gimbal shock absorber supports up to 2,000,000 lb and gimbals when the riser is positioned in the spider

Reduces impact loads when running and landing marine riser joints

3.1 Riser connector

Easy stabbing, fast makeup, and positive alignment

Suitable for operating in water depths up to 7,500 ft depending on environmental and well control conditions; MR-10 designs can operate in depths to 10,000 ft.

Preloaded connection significantly reduces the range of alternating stresses induced by cyclic loading to improve fatigue life

Primary load path for tensile and bending loads through the dogs and into the body, does not impact actuating screws

3.2 API Riser Coupling Class

API RiserCoupling Class

Tensile capacity inmillions of pounds

Class A .5

Class B 1

Class C 1.25

Class D 1.5

Class E 2

Class F 2.5

Class H 3.5

API RP 2R establishes riser coupling classes based on the tensile capacity of the coupling. These are;

3.3 Riser coupling

Ideal for deep water applications where high load operating conditions exist

Stepped diameter design of pin and box simplifies engagement, even with severe vessel movement

No loose parts preventing bolt loss and potential thread damage

Field removable and replaceable nose piece

Locking bolts preloaded in excess of rated coupling loads to extend fatigue load of riser system

Drilling riser (1)

Choke line

Kill line

Hydraulic lines

Prepared for buoyancy

Seals

Testing considerations

Drilling riser (2)

Drilling riser (3)

4. Riser Flex joint

Tensional capacity

Through bore

Ball joint limits

5. Telescopic Joint

Compensates for heave and offset of the vessel

Maximum rated riser tensile load capacity in locked position

Hydraulic latch release for inner and outer barrels available

Dual split/solid packer elements

Fixed or rotating integral/non- integral tensioner rings

6.1 Riser support ring

The Type Riser Tensioner Ring shown saves time because the riser tensioner cables are never disconnected.

When the riser is pulled the tensioner ring will be carried up to the bottom of the diverter housing. Hydraulic latches release the ring from the slip joint and permit it to be locked onto the diverter housing using another set of hydraulic latch dogs. The rest of the riser is retrieved through its center.

6.2 Tension ring

Telescopic Joint is run and pulled through the rotary table without disconnecting the tensioning lines from riser tensiong ring

Riser tensioning lines remain properly spaced out at all times

Hydraulic piping for lockdown/storage dogs remains permanently connected

Hydraulically disconnects from telescopic joint and locks to a mating profile on the bottom of the diverter housing for convenient, out-of-the-way storage

6.3 Ultra deep tension ring

Forms a termination point between the riser tensioner and the marine riser system

Simplifies running and retrieving marine riser by eliminating makeup/breakout of tensioner lines and hydraulic hoses in the moon pool area

Choke, kill, and auxiliary line terminations permanently connected

Orientation pins on the ring engage slots in telescopic joint line termination housing for easy makeup

Permanently installed tensioner lines maintain proper orientation with rig drilling tensioners

7. Intermediate Flex Joint

Installed below the telescopic joint

Up to 2.5 million lb tensile load capacity

Angular deflection to 20 on either side of its axial center while subjected to tensile loading and internal pressure of 1500 psi

Intermediate Flex Joint shown uses a KT ring and no termination joint.

9. Riser extension (adaptor)

10. Single flex joint

Installed in the LMRP below the riser/BOP Stack Interface

Uses a combination elastomeric bearing and seal unit to eliminate the need for a pressure balanced ball and socket interface with seals

Up to 2 million lb tensile load capacity

Rated for H2S service and oil- based drilling mud

Angular deflection to 10 on either side of its axial center while subjected to tensile loading and internal pressures up to 3000 psi

Pressure balance and lubrication systems not required

11-12 System design aspects

System Objective:Solution for drilling in

ultra deepwater drilling

BOP Flange

Wellhead Connector

Subsea Wellhead System

Conductor Sizing (Analysis)

Conductor/Casing Connectors

15,000 psi to 20,000 psi rated pressure

7,000,000 ft.-lbs. Bending @ 15,000 psi

F

~6.6 MM ft-lbs

~7 MM ft-lbs

~7.7 MM ft-lbs

~14 MM ft-lbs(40' Below Mudline)

~8.4 MM ft-lbs

BOP Flange

WellheadConnector

WellheadSystem

Conductor/CasingConnectors

F

~6.6 MM ft-lbs

~7 MM ft-lbs

~7.7 MM ft-lbs

~14 MM ft-lbs(40' Below Mudline)

~8.4 MM ft-lbs

BOP Flange

WellheadConnector

WellheadSystem


BOP Flange

WellheadConnector

WellheadSystem


Questions?

Rig & equipment selection continuedSub Sea Capital drilling equipmentStandard Diverter system1. Deepwater diverter system2.1 Spider 2.2 Riser Gimbal3.1 Riser connector3.2 API Riser Coupling Class3.3 Riser couplingDrilling riser (1)Drilling riser (2)Drilling riser (3)4. Riser Flex joint5. Telescopic Joint6.1 Riser support ring6.2 Tension ring6.3 Ultra deep tension ring7. Intermediate Flex Joint9. Riser extension (adaptor)10. Single flex joint11-12 System design aspectsQuestions?

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Subsea Capital Equipment