Unformatted text preview: hat BP made available to them through shared websites. The Panel found no evidence, other than reviewing this information and approving the AFEs, indicating that BP‐HZN‐MBI000173275. BP‐HZN‐MBI‐00173275. 53 BP‐HZN‐MBI00192546, BP‐HZN‐MBI00192549. 54 BP‐HZN‐MBI00192552, BP‐HZN‐MBI00192553. 55 BP‐HZN‐MBI00192557. 56 BP‐HZN‐MBI00192558. 57 BP‐HZN‐MBI00192559, BP‐HZN‐MBI00192561. 51
52 26 Anadarko or MOEX were directly involved in decisions related to the design or drilling of the Macondo well. 58 B.
Drilling Margin Drilling engineers must design a well to manage pore pressure and fracture gradients at different well depths. Pore pressure is the pressure exerted by fluids in the pore space of the formation being drilled. Fracture pressure is the point at which pressure exerted by the drilling fluid in the well would cause the surrounding formation to fracture. The fracture gradient plot, expressed as a calculated equivalent mud weight, is a curve that shows the well’s estimated fracture gradient by depth. During well design, engineers typically use a gr...
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