BHP Billiton Confirms Commercial Hydrocarbon Discovery With Shenzi-3 Appraisal Well In The Gulf Of Mexico

abarrelfullabarrelfull wrote on 30 Jul 2015 07:14

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15 November 2004

BHP Billiton today announced the results of its second appraisal well on the Shenzi discovery in the deepwater Gulf of Mexico. Shenzi-3 began drilling in May 2004 with the BHP Billiton operated drillship CR Luigs on Green Canyon Block 653. The discovery is located approximately 14 kilometres (9 miles) northwest of the company’s Atlantis field, which is currently in development.

Located in water depths of 1,327metres (4,355 feet) and drilled to a total depth approaching 8,512 metres (28,000 feet), Shenzi-3 successfully encountered hydrocarbons in lower Miocene-aged reservoirs with approximately 100 metres (330 feet) of net oil pay in a 125-metre (410 feet) gross hydrocarbon column. An updip sidetrack well subsequently drilled from the initial wellbore confirmed the presence of a hydrocarbon column. Drilling is currently underway on another sidetrack well to collect additional reservoir data and further corroborate the information found from the first two penetrations at Shenzi-3

Philip Aiken, President of BHP Billiton’s Energy Group, said today, “This is further evidence of the Gulf of Mexico becoming the third core business for our Petroleum Customer Sector Group. We’ve been very pleased with the results we have thus far from drilling at Shenzi-3, and the indications are that we could have a commercial field with a multi-hundred million barrel hydrocarbon resource. We are planning further appraisal drilling to more fully delineate the reservoir.”

The information from Shenzi-3 validates previous drilling results. This includes Shenzi-1, drilled in 2002, which encountered a gross hydrocarbon column of 142 metres (465 feet) with a net pay of 42.5 metres (140 feet), and Shenzi-2, drilled in 2003, which encountered a 381-metre (1,250 feet) gross hydrocarbon column and 152 metres (500 feet) of net oil pay in lower Miocene sandstones.

BHP Billiton is the designated operator at Shenzi and holds a 44 percent interest in the field. Amerada Hess and BP each hold a 28 percent interest.

BHP Billiton’s exploration and development portfolio in the Gulf of Mexico includes the development of the Mad Dog (BHP Billiton share 23.9%) and Atlantis (BHP Billiton share 44%) fields that are due to start production by year-end 2004 and in the third quarter of 2006, respectively. BHP Billiton is among the top leaseholders in the Gulf with interests in more than 430 blocks.

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