Oil&Gas
G-1 and GS-15 offshore Development
2017-12-21 15:00  点击:1
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Project Profile


Value: $225 million
Start-up year: 2011
Upstream Gas Reserves: 150 billion ft³
Upstream Oil Reserves: 10 million bbl
Water Depth: 420m

The workscope includes the GS-15-1 wellhead platform, a subsea system in more than 430 metres of water, umbilicals and rigid and flexible pipelines, modification of existing platform GS-15-4, gas compression and oil pumping facilities at the fields, and onshore oil and gas processing facilities near Amlapuram. Five subsea christmas trees (xmas trees) about 30km offshore, will feed a manifold in 200 metres of water. Two step-out wells from the manifold will extend 1.6km and 3.2km, both ending in 420 metres of water. Two 10-in subsea pipelines will push oil and gas from the subsea manifold to an existing onshore processing facility that needs upgrading to handle the extra load. The scope also includes modification to the existing platform GS-15-4. The development is also known at G1DP project.

Operators:

Oil & Natural Gas Corporation (ONGC)

Reliance Industries Limited (RIL)

Contractors:

IntecSea: FEED

Oceaneering International: Umbilicals

Larsen & Toubro: Onshore terminal works

Dresser-Rand Company: Inspection and preservation work for gas compressors

ABV Energy

Schlumberger Asia Services Ltd.

Constituent companies will undertake deep water installation work:

Acergy
Subsea 7 Inc.

Gulf Piping Company: EPC - Refurbishment and installation of the GS-15-1 deck

Cameron: Subsea equipment

Leighton Contractors (India) Pvt Ltd.: Installation of equipment

Subsea 7 Inc.: Installation and commissioning of G1 Field subsea production facilities



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