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Unformatted text preview: data. Instead, Hafle chose to rely upon Vidrine’s assurance that the rig crew had successfully performed a negative test. 42 During the evening of April 20, the Deepwater Horizon crew continued with the temporary abandonment procedure by opening the BOP and pumping seawater down the drill pipe to displace mud and a spacer from the riser. 43 During these well activities, the well experienced significant changes in pressure. Personnel responsible for monitoring the condition of the well, however, did not recognize these changes as signs of a kick. The crew members shut down the well around 9:15 p.m. to perform a sheen test on the spacer that they planned to send overboard as it was displaced from the well. 44 The decision to send the displaced spacer overboard rendered Sperry Sun personnel unable to measure returns on one of the rig’s flow meters. Due to the placement of the flow meters, BP‐HZN‐MBI‐00021238. Testimony ofJimmy Harrell, Joint Investigation Hearing, May 27, 2010, at 90‐91; Testimony of Miles Ezell, Joint Investigation Hearing, May 28, 2010, at 279‐282. 42 BP‐HZN‐BLY00125470. 43 “Spacer” refers to material that rig cr...
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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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