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Unformatted text preview: tood at the cement unit (a vessel on the rig that injects cement into the well) to verify that the checks were holding. They allowed mud to “flow back until it was probably what we call a pencil stream, and then it quit for a little while, and then when the rig would heave, it would give another little pencil stream,” Tabler said, “I know it was a good 15, 20 minutes that we watched it.” 135 At the conclusion of the float check, the crew concluded that the float valves were holding. The cementing crew completed this job approximately two hours after the cement placement. Guide testimony, July 22, 2010, at 150‐151. See Halliburton post‐job nitrified cementing report and job log (Appendix F). 131 BP‐HZN‐MBI‐00137365. 132 “Bumping the cement plugs,” refers to the process by which the rig crew tests whether the cement plugs are in the proper place. The crew pumps fluid and looks for a pressure spike that indicates that the cement plug has “landed” in place. 133 Nathaniel Chaisson email to Jesse Gagliano, April 20, 2010. 134 BP‐HZN‐MBI00129052. 135 Tabler testimony at 22. 129
130 54 2. Cement Job Returns During the cementing operation fo...
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