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identify lift pressure or lost returns to be proven techniques for evaluating a
150
cement job. Thus, Hafle’s decision tree on whether to direct the Schlumberger
crew to run the cement evaluation log was inconsistent with BP’s own
guidelines.
Schlumberger told the Panel that it is uncommon but not unheard of for
operators to cancel ordered services, such as cement evaluation logs, after the
crew arrives at the facility. Schlumberger reviewed deepwater statistics for a 30‐
month period and found that Schlumberger actually performed 71 of the 74
cement evaluations originally ordered by operators during that period.
Since the Panel concluded that the cement in annulus did not fail, it found
that BP’s decision to not perform a cement evaluation log was not a cause in the
well failure.
150 Id.
60
