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Client
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Discovery Gas & Bridgeline Gas
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|
Region
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Gulf of Mexico
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Location
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Bay Marchand 5 to Ewing Bank 873
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Water Depth
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15-775 ft.
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Pipeline(s)
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- 30" x 69.7 mi. laid
- 30" x 47.2 mi. buried
- 18" x 26.2 mi. laid
- 18" x 21.6 mi. buried
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Services Performed
|
Subsea, Pipelines
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| Contractor |
J. Ray McDermott, Inc. |
| Award |
February, 1997 |
| Completion |
September, 1997 |
| Consultants |
Project Consulting Services, Inc. |
| Project Managers |
George Gernon |
| Key Participants |
Shaw Automated U.T., CRC Automatic
Welding, CalDive Diving Services |
| Misc. |
- Install and Tie-in 30" Riser in 775' W.D.
- Tie-in 18" & 20" Risers
- Tie in 18" & 20" Laterals to 30" Pipeline
- 26 Crossings
- 9 Side-Taps
|
|
Description:
- Deepest 30" pipeline and riser in the Gulf of Mexico
Scope:
- Standard lump sum contract with J. Ray McDermott responsible
for installation of offshore portion and performing tie-in with
onshore portion.
Innovations:
- S-Lay with CRC auto welding for 30"
- Standard S-Lay and manual welding for 18" and 20"
laterals
- Automatic U.T. from Shaw for NDT on 30"
- 30" riser installation in 775' by CalDive's semi DP.DSV
Uncle John
Technology:
- Modified JRM's plow to bury 30" in shallow water (<40')
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