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Oil and Gas Energy News Update

Tuesday, September 13, 2011

Cairn Updates Operations Offshore Greenland

- Cairn Updates Operations Offshore Greenland

Tuesday, September 13, 2011
Cairn Energy plc

The following operational update relates to Cairn's exploration drilling campaign offshore Greenland.

Gamma-1 Well: Eqqua Block, West Disko Area

The Gamma-1 exploration well, drilled by the Ocean Rig Corcovado drillship, located in 1,520 meters (m) of water and 294 kilometers (km) from Aasiaat, in the Eqqua Block in the West Disko area has reached total depth (TD) and preparations are under way to plug and abandon the well. The well had been targeted to test a deep water Tertiary basin floor fan located 100km down dip from the T8-1 well where biogenic and thermogenic gas had been encountered in 2010.

The Gamma-1 well intersected the prognosed basin floor fan at the anticipated depth, although no reservoir or hydrocarbon shows were encountered in the interval.

Delta-1 Well: Napariaq Block, West Disko Area

The Delta-1 exploration well, drilled by the Leiv Eiriksson semisubmersible drilling rig, located in a water depth of 293m and approximately 365km offshore Aasiaat, in the Napariaq Block is currently drilling ahead. The Delta-1 well is aiming to intersect Cretaceous sediments in a large structural closure beneath the Tertiary volcanic interval in which oil shows were encountered in the Alpha-1 well drilled in 2010. The well has so far encountered several hundred meters of Tertiary volcanic section, which is thicker than anticipated and with only minor hydrocarbon indications. A further update will be made later this month, once the well reaches TD.

AT7-1 Well: Atammik Block, South Ungava Area

Following completion of the operations on the Delta-1 Well, the Leiv Eiriksson is scheduled to move south to re-enter the AT7-1 well in the Atammik block, located in 909m of water and 198km offshore Nuuk, and drill to the planned TD.

Fifth Well: AT2 Prospect: Atammik Block, South Ungava Area

Once operations on the Gamma-1 well are complete, the Ocean Rig Corcovado is scheduled to move 597km south, to the Atammik Block, to drill the AT2 prospect as a fifth well in the 2011 exploration drilling campaign.

Further updates will be provided whenever a well is at TD and operations are complete.

Simon Thomson, Chief Executive, said, "The full results of the Gamma-1 well and the update from the Delta-1 well will be reviewed in the context of all the data gathered during the Greenland exploration campaign.

The rigs are scheduled to move south to drill the final two wells of the program on the Atammik block. We remain focused on the potential of our multi-basin position in Greenland."

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