|
Client
|
Shell Deepwater Development
|
|
Region
|
Gulf of Mexico
|
|
Location
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Mississippi Canyon 934 - 807
|
|
Water Depth
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2900-3850 ft.
|
|
Services Performed
|
Subsea, Pipelines
|
| Contractor |
J. Ray McDermott, Inc. |
| Sub-Contractor |
Mentor Subsea Technology Services
|
| Award |
January 1 , 1999 |
| Start |
September 5, 1999 |
| Completion |
December 11 , 1999 |
| Design/Consultants |
Brown & Root
FMC Corporation
Stress Eng., Inc.
|
| Project Managers |
Wendell Freeman |
| Key Participants |
John E. Chance & Assoc.,
Inc.
Floatec Corporation
CRC-Evens Pipeline Int'l., Inc.
Oceaneering Int'l., Inc.
Shaw Pipeline Services, Ltd.
Stolt Comex Seaway, Inc.
R.S. Brookhouser Eng., Ltd.
Bayou Pipe Coating Company
Victoria Machine Works
Oil States / Hydrotech
|
Description:
- Each line (approx. 17.9 miles ea.) was initiated with
a Sled pull-in assisted by a drill rig mounted winch. Both
lines terminated at Shell's Mars TLP with a SCR. The SCRs
were pulled into their final position utilizing a Chain
Jack.
|
Scope:
- Installation of two pipe-in-pipe (PIP) flowlines (8 x .875"
X -70 Carrier pipe w/12 x 0.562" X-60 Jacket pipe) from MC934
(subsea Sled) to MC 807 (SCR).
Innovations:
- JRM worked with R.S. Brookhouser, who developed an internal
lineup clamp (ILUC), which significantly reduced the weld cycle
times (~20%). (JRM applied Floatec between the Carrier and Jacket.)
The application worked very well and there was controllable shrinkage.
Technology:
- JRMs DB50 and (enhanced) J-Lay was utilized. The JRM J-Lay system
and pipeline abandonment and recovery (A&R) system were upgraded
to perform the work.
|
