| Halliburton to coax more oil out of largely depleted Ghawar field |
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 Halliburton was awarded a five year integrated turnkey contract for Ghawar field. Work will be performed in Uthmaniyah, Haradh, Hawiyah and Shedgum. Halliburton will provide drilling rigs, directional and horizontal drilling tools, logging, cementing, mud engineering, perforation, completion and well construction services. Halliburton will engineer and manage the entire drilling operation.Three to four rigs will drill and complete between 153 and 185 oil and water injection wells.
Ghawar field, the world's largest, is a long asymmetric structure that is 230 kilometers long and approximately 30 miles wide however the width diminishes going south.The The announcement makes no mention of Ain Dar, the most mature part of Ghawar in the extreme northwestern region of the field. Ain Dar has been under pressure maintenance by peripheral water injection for over 40 years. Ain Dar (and other parts of the field) began producing salt water in the late 1970s and by 2005, the cut was 42%. All of Ain Dar was wet since 1984. Once water became a major problem, many existing vertical wells were converted to short lateral horizontals running along the top 10 feet of the Arab D zone, the main pay. New wells were drilled horizontally to the same layer. Today, the redevelopment process has gone on so long that future oil production from Ain Dar is speculative. Shedgum, adjacent to Ain Dar on the east, is not much better off.
GL Group
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Posted on Sunday, November 08 @ 06:07:01 PST by Leanan |
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