Corrections

This page corrects mistakes in our Deepwater Horizon book that have been identified by readers.

Page 6: Natural gas is not always poisonous.

Page 19: Replace the sentence in paragraph 3 that reads “Neither work mentioned the dangers of hydrocarbons, the critical need for systems safety, or the importance of management of change, contextual reviews, and other tools of engineering management.: with “Neither work mentioned the dangers of hydrocarbons, the critical need for systems safety, or the importance of management of change, contextual reviews by multidisciplinary teams, and other tools of engineering management.”

Page 58: Replace the date “January 21, 2010” in paragraph 2 with “January 31, 2010.”

Page 203: Replace the sentence in paragraph 4 that reads “What’s more, BP was obligated to pay the Horizon’s day rate until the end of 2010 no matter which well she was working on.” with “What’s more, BP was obligated to pay the Horizon’s  day rate until the end of 2010, and would incur operating expenses no matter which well she was working on.”

Page 218: Replace the sentences in paragraph 3 starting with “However … ” and ending with “never faced.” with “However, although the drillers were accustomed to using the rams in ordinary circumstances for tasks such as holding drill pipe in position, even the most senior members of the crew had never actually sheared a drill pipe during an incipient blowout.”

Page 268: Replace the sentences in note 13 starting “WSLs and some crew …” and ending with “… continuous operations.” with “WSLs, toolpushers, and subsea supervisors changed shift at 6:00 a.m. and 6:00 p.m; other crew members changed shift at noon and midnight to provide overlap for continuous operations.”

Page 272: Add after “Ibid.” in note 11: “At a later trial, a member of BP’s investigation team testified that BP considered a closed kill line valve to be a plausible explanation for the pressure anomaly. United States v. Robert Kaluza, No. 12-265 (U.S. Dist. Ct., E.D. Louisiana, Feb. 18, 2016), vol. 3, p. 1278”

Page 273: Add after “MDL Ruling paras. 278-280” in note 4: “A forensic copy of the contents of the senior drilling engineer’s computer was made by the FBI immediately after the blowout. During a later trial, an expert witness testified that this copy showed the senior drilling engineer was disconnected from BP’s internal network and connected to the open internet at the time of the phone call. This meant he could not have been looking at the Sperry Sun data for the pressure anomaly being discussed. United States v. Robert Kaluza, No. 12-265, pp. 1476-1478.”

Page 287: In the index entry for “Kodiak well,” change “39, 53, 204” to “39, 53, 58, 204.”