52

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Macondo. Because of the movement of the mud, it was difficult for the crew to track fluid volumes in the wellbore and in the mud pits on the rig. 40 Next, crew members turned to conducting negative pressure tests on the well, which would give the crew information about whether the production casing cement job was capable of keeping hydrocarbons out of the wellbore. The crew ran two separate negative tests using different procedures for each test. Just prior to 8:00 p.m. on April 20, the BP well site leader on duty on the rig, Donald Vidrine, and Transocean crew members concluded that the second negative test showed that the final cement job was successful. 41 Vidrine also called Mark Hafle, a BP engineer in Houston, around 8:50 p.m. to discuss the surface plug. During this call, Vidrine described the results of the negative tests. Hafle questioned Vidrine about the results of the negative test, but he chose not to investigate further by accessing and reviewing the available real‐time...
View Full Document

This note was uploaded on 01/18/2014 for the course BEPP 305 taught by Professor Nini during the Fall '11 term at UPenn.

Ask a homework question - tutors are online