Reliance Makes Deepwater Gas Discovery in the Cauvery Basin

Cauvery Basin, Offshore India
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Reliance Industries Ltd has successfully drilled its very first well in the Cauvery deepwater basin off the east coast of India. This is the first time a hydrocarbon discovery has been made in the Cauvery deepwater basin. The deepwater block CY-DWN-2001/2 (CY-III-D5) located in the Cauvery Basin, with an area of 14,325 square kilometers, was awarded to Reliance under the NELP III licensing round. Reliance holds a 100% participating interest in this block.

The success of the well CY-III-D5-A1 in the exploration block CY-DWN-2001/2 (CY-III-D5) marks the beginning of a new vista of exploration in this basin. This well was located in a water depth of 1185 meters and was drilled to a target depth of 4081 meters and terminated in the crystalline basement. The well encountered an elastic reservoir with gross hydrocarbon column of around 150 meters in the Cretaceous section. The presence of oil and gas with condensate has been confirmed by several tests including Modular Dynamic Tester (MDT) and Drill-Stem Testing (DST). During DST the well produced 31 million Standard cubic feet of gas with 1200 barrels of condensate per day from the main zone. Another zone tested below the main zone produced around 550 barrels of oil per day with 1 million standard cubic feet of gas. The Government of India and Directorate General of Hydrocarbons has been notified of the discovery which is named, Dhirbubhai 35.

Within a short span of six years as an E&P operator, Reliance has discovered hydrocarbons in the four major offshore basins of India namely Krishna Godavari, Mahanadi, Saurashtra and now Cauvery basin, with major commercial finds in deepwaters. This discovery establishes Reliance as a pioneer in the challenging deepwater exploration arena in India.

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