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Client
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Mariner Energy, Inc.
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|
Region
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Gulf of Mexico
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Location
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Green Canyon 254, 472, 473 and 572
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Water Depth
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3400 ft.
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Services Performed
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Project Management, Front-End Engineering Design, Detailed Engineering, Subsea
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| Contractor |
Mentor Subsea
Technology Services, Inc. |
| Award |
February, 2001 |
| Completion |
December, 2001 |
| Key Partner |
AGIP Petroleum |
| Project Manager |
Karl Winter - Mariner
Douglas Korth - Mentor |
|
|
Description:
- Three subsea wells in 3,400-feet of water, one each in
Green Canyon (GC) Blocks 472, 473 and 572 connected to a
common manifold in GC block 472. The wells in GC blocks
473 and 572 connect to the manifold by 5-inch flowlines
of 2-mile length each.
- Two 7” flowlines connect the manifold center to
the Allegheny Tension Leg Platform (TLP) in GC Block 254,
15-miles distant, in 3,100 feet of water.
- Two 6-inch “lazy-S” steel catenary risers
with modular buoyancy connect the 7” flowlines to
the TLP.
- The wells are controlled by a single EH/MUCS umbilical
from the TLP.
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Scope:
- Engineering & Project Management: Performed the preliminary
and detailed design of the Subsea flowline and riser system
which consisted of 2 x 5” flowlines 2-miles each,
2 x 7” flowlines, 15-miles each and 2 x 6” buoyed
steel catenary risers. Mentor also prepared and issued all
specifications and requests for proposal documents for procurement
and installation , and managed the construction and installation.
Technology and Innovation:
- Use of API RP 1111, Limit State Design of Pipelines, Flowlines
and Risers.
- First Buoyed Steel Catenary Risers
- First use of CRP, Inc. Uraduct® on an umbilical crossing
in the Gulf of Mexico
- Use of CRP, Inc. Thermostrake® insulated VIV suppression
strakes
- Use of Titanium Stress Joints on the SCR’s
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