BP's internal investigation team is looking at seven key items in its probe of the Apr. 20 explosion and fire onboard the Transocean Deepwater Horizon.

摘要

The investigation will center on: the cement that seals the reservoir from the well; the casing system, which seals the well bore; the pressure tests to confirm the well is sealed; the execution of procedures to detect and control hydrocarbons in the well, including the use of the BOP.