UK: Endeavour Reports Additional Drilling Success in Cygnus Field


Endeavour International Corporation today announced that a sixth appraisal well has been successfully drilled and tested in the Cygnus gas field further confirming the field as one of the largest ever discovered in the UK sector of the Southern North Sea.

In addition, the Department of Energy and Climate Change has awarded Cygnus field participants interest in P1731 covering blocks 44/11b and 44/12b. This new license contains additional fault blocks forming a northerly extension of the Cygnus structure that are yet to be appraised by drilling.

“With the successful completion of this well in the Cygnus gas field, we are now pursuing an optimized field development concept that will be designed to accommodate the potentially significant flow rates from this world-class gas field,” said William L. Transier, chairman, chief executive officer and president. “Our expanded leasehold position will allow us to maximize the potential of the field and to accelerate first production in a country where new natural gas supply is needed.”

The 44/12a-5 appraisal well achieved a stabilized flow rate of 29 million standard cubic feet of natural gas per day from 94 feet of perforations in the Leman reservoir. Analysis of the results from Cygnus well data combined with seismic data has led to a reserve estimate in the five appraised fault blocks ranging from a low case of 500 billion cubic feet to an upside of 1.2 trillion cubic feet. The additional fault blocks falling mainly in the new license could add material volumes once drilled.

Endeavour holds a 12.5 percent interest in blocks 44/11a and 12a and 17.24 percent in blocks 44/11b and 44/12b. License participants are GDF Suez E&P, the operator, and Centrica.

Endeavour International Corporation is an oil and gas exploration and production company focused on the acquisition, exploration and development of energy reserves in the North Sea and United States.

Source: endeavourcorp,July 7, 2010;

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