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Unformatted text preview: the well, even though various well conditions created difficulties for the production casing cement job. The location of the production casing. BP decided to set production casing in a location in the well that created additional risk of hydrocarbon influx. The decision to install a lock‐down sleeve. BP’s decision to include the setting of a lock‐down sleeve (a piece of equipment that connects and holds the production casing to the wellhead during production) as part of the temporary abandonment procedure at Macondo increased the risks associated with subsequent operations, including the displacement of mud, the negative test sequence and the setting of the surface plug. The production casing cement job. BP failed to perform the production casing cement job in accordance with industry‐accepted recommendations. The Panel concluded that BP failed to communicate these decisions and the increasing operational risks to Transocean. As a result, BP and Transocean 2 personnel onboard the Deepwater Horizon on the evening of April 20, 20...
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