英国巨头石油公司BP表示，多家公司和工作小组对墨西哥湾的石油泄露灾难负有责任。
英国石油公司在星期三公布的一份内部报告中说，那起事故是机械故障、人的判断以及工程设计等一系列复杂的因素所导致的。
这份报告表示，油井上一个有问题的水泥塞使得天然气和其他液体通过生产管道涌向海面。跨海石油公司钻井上的工作人员在40多分钟的时间里未能注意到海面上漂浮的碳氢化合物。
浮在海面的天然气和石油直接流到油井上，并在那里开始燃烧并爆炸。
在油井发生爆炸以及油井起火后，海底上的防喷器本来应该自动将油井封住，但是未能做到这一点，导致大规模的石油泄漏。
British oil giant BP says multiple companies and work teams were responsible for the oil spill disaster in the Gulf of Mexico.
In an internal report released Wednesday, BP said the accident was the result of a complex series of mechanical failures, human judgments and engineering design.
The report indicates that a bad cement seal on the oil well allowed gas and other liquids to flow up the production pipe. Over a 40-minute period, the crew on the Transocean oil rig failed to notice the hydrocarbons rising to the surface.
Once at the surface, the gas and oil was diverted directly onto the oil rig, where it ignited and exploded.
Following the explosion and fire on the rig, the blow-out preventer on the sea bed should have automatically sealed the well, but it failed, resulting in the massive oil spill.
