Two expert witnesses testified today in the civil trial against oil company BP and its contractors, Transocean and Halliburton, listing the critical errors they say contributed to the 2010 Deepwater Horizon oil rig explosion. Oil drilling expert Richard Heenan focused on the misinterpretation of a negative pressure test by BP and Transocean crew, calling their interpretation a “gross and extreme departure” from “good oilfield practices.” BP attorney Mike Brock objected to Heenan’s choice of words, saying it was the duty …
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