OKIOC reveals details on Kashagan discovery well

The Offshore Kazakhstan International Operating Co. (OKIOC) partners on Monday opened the door a crack, revealing a few details of their Kashagan East 1 wildcat, spudded last fall in the North Caspian Sea. Drilled in 10 ft of water to 16,400 ft TD, the well encountered an oil-bearing interval in the Palaeozoic carbonates below 13,000 ft, says OKIOC. The lower zone, the first of two tests planned, flowed at rates as high as 3,700 b/d of 42-44� oil and 7 MMcfd of gas through a 32/64-in. choke.

Jul 24th, 2000


The Offshore Kazakhstan International Operating Co. (OKIOC) partners on Monday opened the door a crack, revealing a few details of their Kashagan East 1 wildcat, spudded last fall in the North Caspian Sea.

Drilled in 10 ft of water to 16,400 ft TD, the well encountered an oil-bearing interval in the Palaeozoic carbonates below 13,000 ft, says OKIOC. The lower zone, the first of two tests planned, flowed at rates as high as 3,700 b/d of 42-44� oil and 7 MMcfd of gas through a 32/64-in. choke.

Kashagan East 1 is the first well drilled by OKIOC�a consortium of nine international shareholders�in which ExxonMobil Corp. holds a 14.3% interest. The wildcat was drilled 47 miles southeast of Atyrau with the world's only arctic-class barge rig, Sunkar Rig 257, owned by Parker Drilling (OGJ, Sept. 20, 1999, p. 90).

On the basis of this first well, the Kashagan reservoir has been described in regional press reports as holding anywhere from 8 to 50 billion bbl of original oil in place. OKIOC is more cautious in its statements about the size of the find, however.

General Manager Keith Dallard said, "OKIOC and its shareholders are encouraged by the data we have received to date, and we hope that continued exploration and appraisal drilling will further support these initial results. We will continue to analyze the information obtained during the drilling and testing program to learn more about the characteristics of the hydrocarbons that we have encountered and the nature of the Kashagan field."

Drilling activities at Kashagan West, a second exploration location 25 miles from Kashagan East drill site, will begin in fourth quarter 2000. Plans for further appraisal of the structure are being progressed, says ExxonMobil

OKIOC is conducting the Kashagan exploration program on behalf of a consortium of nine international shareholders. Those shareholders include subsidiaries of ENI SPA, BG PLC, BP Amoco PLC, ExxonMobil, Inpex, Phillips Petroleum Co., Royal/Dutch Shell Group, Statoil AS, and TotalFinaElf SA.

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