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BP Decision Less Cost to Less Rig Greater
BP Time Risk
6 versus 21 Centralizers Yes Yes Yes
Cement Bond Log Yes Yes Yes
Full Bottoms Up on 4/19 Yes Yes Yes
Long String versus Liner Yes Yes ‐‐
Timing of Lock Down Sleeve Yes Yes Yes
Installation After the Negative
Test
Pumping mud to boat while Yes Yes Yes
displacing
Lost circulation material (“LCM”) Yes Yes Unknown
pills combined for Spacer
Figure 15 – BP Decisions and Associated Cost, Time and Risks

2. Management of Change – Drilling Operations

BP’s DWOP required that any significant changes to a drilling plan “shall
be documented and approved via a formal management of change (“MOC”)
436
process.” This requirement was reinforced by the BP golden rules, which
require that “work arising from temporary and permanent changes to

organization, personnel, systems, process, procedures, equipment, products,
materials of substances, and laws and regulations cannot proceed unless a MOC
process is completed.” BP required the MOC process to include: (1) a risk
assessment conducted by all affected by the change; (2) a work plan that
included details regarding control measures to be implemented for equipment,
facilities, process, operations, maintenance, inspection, training, personnel,
communication, and documentation; and (3) authorization of the work plan by
responsible person(s).
437

Despite the company’s careful documentation of the importance and
necessity of the MOC process, the Macondo team did not use this process to
manage important changes occurring in day‐to‐day drilling operations.
Examples of MOC issues that were not properly documented or completed in
accordance with BP policy during drilling operations included:

436 BP DWOP 4.4.
437 Id.

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