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Cairn strikes oil off Senegal and opens new Atlantic Margin basin

10th November 2014

Cairn Energy has announced a discovery of high quality oil in the second well in the Senegal exploration programme

Cairn strikes oil off Senegal and opens new Atlantic Margin basin
The deeper target of karstified and fractured Lower Cretaceous shelf carbonates is yet to be reached

The SNE-1 well has discovered a 95 metre gross oil bearing column with net oil pay zone thickness of 36 metres in Albian aged sandstones which display excellent reservoir potential.

High quality 32° API oil has been recovered to the surface.

The SNE-1 well is located in 1,100-metres water depth, approximately 100 kilometres offshore in the Sangomar block with a target total depth of around 3,000 metres.

“This is a significant oil find for Cairn and Senegal and based on preliminary estimates is a commercial discovery and opens a new basin on the Atlantic Margin,” said Simon Thomson, Cairn chief executive.

“On completion of the SNE-1 well the joint venture along with the authorities in Senegal will evaluate all of the information to understand how best to take forward these basin opening discoveries with an appraisal drilling programme in 2015.

“Cairn has additional prospects and leads that offer further exploration potential across this large acreage position in West Africa.”

Notices of Discovery for the SNE-1 well and FAN-1 well have been issued to the government of Senegal.

Further evaluation of this zone is continuing.

The deeper target of karstified and fractured Lower Cretaceous shelf carbonates is yet to be reached.

A further announcement will be issued once operations are completed on SNE-1.

The results of the FAN-1 well and the final analysis from the SNE-1 well will be used to decide optimal follow up locations to determine the extent of the hydrocarbon accumulations and additional activity which is targeted for 2015 onwards. ​

Cairn has a 40 per cent Working Interest (WI) in three blocks offshore Senegal (Sangomar Deep, Sangomar Offshore and Rufisque) ConocoPhillips has 35 per cent WI, FAR Ltd 15 per cent WI and Petrosen, the national oil company of Senegal 10 per cent.

The three blocks cover 7,490 square kilometres.

The FAN-1 and SNE-1 wells are the first deepwater (greater than 1,000-metres) wells drilled in Senegalese waters and the first offshore wells to be drilled for over 20 years.

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