Pumpingcementattherelativelylowflowrateof4bpmcouldhave

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Unformatted text preview: prepared a decision tree to determine whether BP would run the cement evaluation log. 147 According to the decision tree, rig personnel were to determine whether the cement placement went as planned by checking for lift pressure of approximately 100 psi (60 psi more than expected) and evaluating whether there had been any apparent fluid losses. Rig personnel observed these indicators and concluded that the cement job had gone as planned. On the morning of April 20, the BP Macondo well team decided not to run a cement evaluation log. 148 BP’s engineering technical practices require that personnel determine the top of cement by a “proven cement evaluation technique” if the cement is not 1,000 feet above any distinct permeable zones. 149 The acceptable proven techniques identified in BP’s internal guidelines are cement evaluation logs, cement column back pressure, and temperature logs. BP’s guidelines do not Halliburton Deepwater Primary Cementing: Beyond the Shallow Water Flows, Chapter 7: Post Job Procedures and Analysis (1997). 147 BP Production Casing and TA Forwar...
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This note was uploaded on 01/18/2014 for the course BEPP 305 taught by Professor Nini during the Fall '11 term at UPenn.

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