Oil and gas production is estimated to be approximately .704 tons of oil and 4.135 billion cubic meters of gas from the integrated development of the G-1 and GS-15 fields between 2006 - 2015, depending when the field comes on stream. The project is proposed to be completed within 24 months.
So far, nine exploration wells have been drilled in G-1 structure and eight exploration wells have been drilled on different culminations of GS-15 structures. Mostly likely ONGC would take up integrated development of the two fields as development of GS-15 on a standalone basis was unviable. The capital cost of GS-15 could be reduced by sharing the 14" well fluid line of G-1 which also operates at low pressure and is passing near the GS-15 fields. Also, execution of the projects of G-1 and GS-15 offshore constructions as a single unit will reduce the offshore construction cost significantly.
The G-1 structure is located in the Bay of Bengal, 20 kilometers off the Amlapuram coast in Krishna Godavari offshore basin at water depths of 267-300 meters. The field was discovered in 1979-80 with the drilling of first exploratory well G-1-1, which proved to be hydrocarbon bearing. So far, nine exploration wells have been drilled, of which five proved to be hydrocarbon bearing.
GS-15 prospects are located in shallow waters off Amalapuram coast in KG Basin, in water depths ranging from eight to 15 meters at a distance of 5-10 km from the coast. To date, eight exploratory wells have been drilled, of which three proved to be oil and gas bearing.
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