Cement slurry used in the Macondo well was unstable and may have contributed to the April 20 blowout aboard the Deepwater Horizon, according to a report issued Thursday by Fred Bartlit Jr., lead investigator for the National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling. Related Links: Gulf Oil Spill In his report to the presidential-appointed commission, Bartlit said that Houston-based Halliburton and BP both knew from previous tests that the nitrogen-based cement, as planned to be used in the Macondo well, would be unstable. “Halliburton (and perhaps BP) should have considered redesigning the foam slurry before
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.