Stockman Scott's Political Debate Porch Message Board

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Politics : Stockman Scott's Political Debate Porch

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To: koan who wrote (79985)	5/11/2010 1:13:36 PM
From: stockman_scott	Read Replies (2) of 89467

Cheney is Halliburton's Big Daddy. Halliburton was responsible for the cement work on Deepwater Horizon: After an exploration well is drilled, cement slurry is pumped through a steel pipe or casing and out through a check valve at the bottom of the casing. It then travels up the outside of the pipe, sheathing the part of the pipe surrounded by the oil and gas zone. When the cement hardens, it is supposed to prevent oil or gas from leaking into adjacent zones along the pipe. As the cement sets, the check valve at the end of the casing prevents any material from flowing back up the pipe. The zone is thus isolated until the company is ready to start production. The process is tricky. A 2007 study by the U.S. Minerals Management Service found that cementing was the single most-important factor in 18 of 39 well blowouts in the Gulf of Mexico over a 14-year period. Halliburton has been accused of performing a poor cement job in the case of a major blowout in the Timor Sea off Australia last August. An investigation is underway... theoildrum.com

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