Shaikan appraisal logs touted in Iraq's Kurdistan region

Log results indicate that the Shaikan-4 appraisal well may be the best well that Gulf Keystone Petroleum Ltd. has logged to date in Iraq’s Kurdistan region.
Jan. 23, 2012
3 min read

Log results indicate that the Shaikan-4 appraisal well may be the best well that Gulf Keystone Petroleum Ltd. has logged to date in Iraq’s Kurdistan region.

Independently audited gross oil in place volumes of between 8 billion bbl to 13.4 billion bbl calculated on the P90 to P10 basis with a mean value of 10.5 billion bbl (OGJ Online, Nov. 21, 2011).

Two well tests in Triassic have been completed at Shaikan-4, 6 km west of the Shaikan-1 discovery well. Five further tests are planned in the Jurassic and Triassic.

Shaikan-4 flowed 563 b/d of oil and 3.65 MMscfd of gas at 328 psi flowing wellhead pressure on the first well test, in the Kurre Chine C formation. On the second test, a thin zone at the bottom of the Kurre Chine B formation flowed at 4,970 b/d of oil and 7 MMscfd of gas at 1,101 psi flowing wellhead pressure. Initial results indicated 39° gravity oil.

The Shaikan-5 appraisal well, 6 km northeast of the Shaikan-2 appraisal well, is drilling at 1,571 m measured depth in Lower Cretaceous. Estimated final depth is 3,500 m subject to technical conditions.

The Shaikan-6 appraisal well, 9 km east of the Shaikan-2 appraisal well, has drilled to 844 m measured depth in Cretaceous and 20-in. casing has been set. Final depth is 3,800 m subject to technical conditions.

Gulf Keystone is operator of the Shaikan block with 75% working interest. Kalegran Ltd., a 100% subsidiary of MOL Hungarian Oil and Gas PLC, has 20%, and Texas Keystone Inc. has 5%.

Meanwhile, Kalegran, operator of the Akri-Bijeel block, has spudded Aqra-1, the first appraisal well to assess the Bijell discovery. Kalegran’s current P50 estimate for Bijell is 2.4 billion bbl of oil in place.

Aqra-1 is being drilled 8 km northwest of the Bijell-1 discovery well and 26 km west-northwest of the Bekhme-1 exploration well to an estimated TD of over 4,700 m in Triassic subject to technical conditions.

According to Kalegran’s Akri-Bijeel block operational update and 2012 outlook of Dec. 28, 2011, Aqra-1 is expected to be tested in the second half of 2012 and is to be followed this year by the Barkman-1 and Gulak-1 exploratory wells and the Bijell-2, Qalati-1, and Qandagul-1 appraisal wells in 2012 and two more appraisal wells in 2013.

An extended well test is planned for the Bijell-1 discovery well in 2012, similar to the ongoing successful Shaikan-1 and 3 extended well test.

Kalegran has 80% interest in the Akri-Bijeel block and Gulf Keystone has 20%.

On the Genel Energy-operated Ber Bahr block, the first exploratory well is drilling at 2,778 m measured depth in the Triassic. Estimated final depth is 3,000 m subject to technical conditions.

Ber Bahr block interests are Genel Energy 40%, Gulf Keystone 40%, and the Kurdistan Regional Government 20%. The operator’s resource estimate for the Ber Bahr block is 1.5 billion bbl of oil equivalent initially in place.

About the Author

Alan Petzet

Chief Editor Exploration

Alan Petzet is Chief Editor-Exploration of Oil & Gas Journal in Houston. He is editor of the Weekly E&D Newsletter, emailed to OGJ subscribers, and a regular contributor to the OGJ Online subscriber website.

Petzet joined OGJ in 1981 after 13 years in the Tulsa World business-oil department. He was named OGJ Exploration Editor in 1990. A native of Tulsa, he has a BA in journalism from the University of Tulsa.

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