"Gauri" Gas and Oil Discovery on Block CB-OS/2 Update on Drilling Operations on Blocks CB-OS/2 and KG-DWN-98/2

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18 January, 2001

Gauri Gas and Oil Discovery
Cairn has made a third hydrocarbon discovery on Block CB-OS/2 offshore Gujarat in Western India with its exploration well CB-B-1, located approximately 6 kilometres south east of the Lakshmi gas discovery. The well reached a total depth of 1,286 metres sub-sea and encountered several hydrocarbon pay zones below 753 metres sub-sea.
Two zones (DST-2 and DST-3) tested and flowed gas at a cumulative rate of 39.2 million standard cubic feet of gas per day ("mmscfd"). A third zone (DST-1) flowed oil at a stabilised rate of 1,039 barrels of oil per day on a 32/64" choke. The oil test was constrained by surface test equipment limitations.

A 3D seismic survey over the Lakshmi and Ambe discoveries is expected to commence on 19 January 2001 and will be extended to cover the Gauri discovery. An appraisal programme on the discovery is planned in the first half of 2001. Initial gross reserve estimates for the discovery are between 100 and 300 billion cubic feet of gas equivalent.
The Gauri discovery lies on trend with and to the south west of the producing Hazira Field.

Future development options for the discovery are being considered, however conceptually, the field could be developed as a stand alone field or tied back as a satellite development to either Lakshmi or Hazira.

Prospect "G" - Block CB-OS/2
The CB-G-1 exploration well is currently operating at a depth of 400 metres.
A further update on operations and well results on Block CB-OS/2 will be provided in due course.

Prospect "N" - Block KG-DWN-98/2
The deep water drill ship "The Energy Searcher" is currently running anchors on location on exploration prospect "N" in the north east of Block KG-DWN-98/2 in the Krishna-Godavari Basin offshore Eastern India. An exploration well on prospect "N" is expected to spud in the next few days following an initial pilot hole.

Bill Gammell, Cairn's Chief Executive commented:-
"This third discovery on Block CB-OS/2 offshore Gujarat significantly strengthens our gas marketing position in an area of high and as yet unsatisfied energy demand. We are continuing our extensive drilling programme in India with further exploration and appraisal drilling on this Block and the commencement of exploration drilling on Block KG-DWN-98/2."

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