The deepwater horizon rig, owned and operated by offshoreoildrilling company transocean and leased by oil company bp, was situated in the macondo oil prospect in the mississippi canyon, a valley in the continental shelf. Built by south korean company hyundai heavy industries and owned by transocean, the rig operated under the marshallese flag of convenience, and was chartered to bp from march 2008 to september 20. Deepwater horizon accident investigation report pdf. Deepwater horizon accident investigation report executive summary on the evening of april 20, 2010, a well control event allowed hydrocarbons to escape from the macondo well onto transoceans deepwater horizon, resulting in explosions and fire on the rig. Posttexas city refinery disaster, bp developed but macondo did not benefit. The deepwater horizon was a 10yearold semisubmersible, mobile, floating, dynamically positioned drilling rig that could operate in waters up to 10,000 feet 3,000 m deep. On april 20, 2010, the oil drilling rig deepwater horizon, operating in the macondo prospect in the gulf of mexico, exploded and sank resulting in the death of 11 workers on the deepwater horizon and the largest spill of oil in the history of marine oil drilling operations. All official reports and our own internal investigation concluded that the accident was the result of multiple causes, involving multiple parties. On april 20, 2010, a sudden explosion and fire occurred on the oil rig. The explosion that tore through the deepwater horizon drilling rig last april 20, as the rigs. In january 2010, bp replaced the marinas rig with the deepwater horizon. The details of the causes of the accident and a computational fluid dynamics cfds modeling of the dispersion of flammable gas was given in the bp investigation report bp, 2010. Although minor differences exist between the bp report and the data, the report is considered valid from a.
T hese investigations publicly documented many facts about the incident and thoroughly examined several issues. Dhsg final reportmarch 2011 university of california. Bp rig missed 16 inspections before explosion cbs news. Deepwater horizon accident investigation report bp. Bp and the deepwater horizon disaster of 2010 mit sloan. Another concern outlined in the report was that while bp had emphasized. Study of the 2010 deepwater horizon bp oil spillage in the. On april 20, 2010, while drilling at the offshore bp macondo prospect, there was a blowout on the rig followed by a release of gas and in turn an explosion that killed 11 crew members. Deepwater horizon an overview sciencedirect topics. After the accident, there are some internal initiatives made by bp s management. To watch the video explaining what bp s internal investigation team found to cause the april 20th explosion of the deepwater horizon drilling rig, click here. This is the report of an internal bp incident investigation team.
The bp deepwater horizon accident the joint commission. National commission on the bp deepwater horizon oil spill govinfo. The offshore drilling industry has made tremendous technological strides since a freestanding structure for drilling was built in 1937 in the gulf of mexico in 14 feet of water, more than a mile offshore. Deepwater horizon study group investigation of the macondo well blowout disaster 7 10.
Final report on the investigation of the macondo well blowout. Investigation into the marine casualty, explosion, fire, pollution, and sinking of mobile. Bp deepwater horizon oil spill and offshore drilling. The rig crew had experienced problems in promptly detecting kicks. According to analysis of daily dispersant reports provided by the deepwater horizon unified command, before 26 may, bp used 25,689 us gallons per day 0. The csbs investigation was unanimously approved by the board.
Analysis and discussion of deepwater horizon accident and. This report from the bp included the recommendations for preventing the similar accident in any future situation. Report of investigation into the circumstances surrounding the explosion, fire, sinking and loss of eleven crew members aboard the mobile offshore drilling unit deepwater horizon in the gulf of mexico april 2022, 2010, vol. Macondo investigation report volume 1 june 5, 2014 1.
Deep water horizon accident investigation lessons learned. During the foregoing attempts, two relief wells were drilled to provide. On the evening of april 20, 2010, a well control event. The investigation found that no single factor caused the macondo. Bp has published its internal investigation into the accident on the deepwater horizon rig in the gulf of mexico on 20 april 2010. The explosion of the deepwater horizon drilling platform on april 20, 2010, ended bp s decades growth and forever changed a company where the. The board approved its final report by a vote of 50 at a public meeting in texas city on march 20, 2007. Pdf deepwater horizon accident investigation report. At the time of the accident, the deepwater horizon dwh crew had finished drilling and was. Bp deepwater horizon accident investigation report sept 8 bp deepwater horizon investigation. Bp conducted its own accident investigation of deepwater horizon, but once again kept its scope extremely narrow. The bp daily report for the period of interest, 22. The deepwater horizon drilling rig explosion was the april 20, 2010, explosion and subsequent fire on the deepwater horizon semisubmersible mobile offshore drilling unit modu, which was owned and operated by transocean and drilling for bp in the macondo prospect oil field about 40 miles 64 km southeast off the louisiana coast. Bps deepwater horizon accident investigation report.
Office of natural resources revenue, total federal. Bp shortcuts led to gulf oil spill, report says the new. Vinnem, 2014,the deepwater horizon study group dhsg, 2011,csb, 2014 the accident progression of the macondo well blowout began in late 2009 when hurricane ida passed the mexican gulf damaging the marinas rig. Several factors stand out in the findings of these reports. The third progress report december 1, 2010 concluded. Chief counsels report 2011, macondo the gulf oil disaster, february 2011.
The deepwater horizon was a deepwater, offshore oil drilling rig owned by transocean rig and contracted to the operator bp plc. Bp to provide the deepwater horizon rig and personnel to drill the macondo well on mississippi canyon block 252. The oil well over which it was positioned was located on the seabed 4,993 feet 1,522 metres below the surface and extended approximately 18,000 feet 5,486. Furthermore, the differences between the highest reservoir pore pressure, which had to be offset by the drilling mud to prevent reservoir fluid flow, and the fracture gradients of the. Bp agrees with the report s core conclusion consistent with every other official investigation that the deepwater horizon accident was the result of multiple causes, involving. The report does not represent the views of any individual or entity other than the investigation team. Nontechnical skills, safety culture, and system complexity article pdf available in journal of risk research 173. Deepwater horizon accident investigation report executive. Explosion modeling and analysis of bp deepwater horizon. Bp produced a report after the conduction of the investigation, named the deepwater horizon accident investigation report. Preliminary insights halliburton sept 26 national academy of engineering committee.
Deepwater horizon accident investigation report, september 2010 t national commission on the bp deepwater horizon oil spill and o. Two mms employees who inspected deepwater horizon in 2009 were quoted in a recent report pdf by the department of interior inspector general describing the close relationship that mms inspectors. The investigation team has produced the report exclusively for and at the request of bp in. Cover memo volume i us coast guard report volume ii us department of the interior report deepwater horizon report appendices. The bp deepwater horizon blowout not only resulted in an oil release over several months but also caused an explosion topside which took 11 lives. Figure 3 from the bp report1 is reproduced below as figure 5. The bp investigation report findings ref, the bp accident investigation report, september 2010 well control response actions failed to regain control of the well if fluids had been diverted overboard, there may have been more time to respond, and reduced consequences diversion to the mud gas separator resulted in gas venting onto the rig. Deepwater horizon joint investigation team report bureau. Bp deepwater horizon oil spill and offshore drilling he instructed the commission to. Final fateful flaw university of california, berkeley.
The report does not represent the views of any individual or entity other than the. The deepwater horizon investigation included several investigations and commissions, among others reports by national incident commander thad allen, united states coast guard, national commission on the bp deepwater horizon oil spill and offshore drilling, bureau of ocean energy management, regulation and enforcement, national academy of engineering, national research council. Bp did not conduct an investigation into the reasons for the delayed detection of the kick. After the epa directive, the daily average of dispersant use dropped to 23,250 us gallons per day 0. The deepwater horizon sank on april 22, taking with it the top pipe of the well and parts of the system that were supposed to prevent blowouts from occuring. The explosion and subsequent fire resulted in the sinking of. These include our own bp investigation and the report of the presidents national commission. The massiveness of the deepwater horizon spill forced the oil industry to try just about every conceivable method for removing oil from the gulf and its shoreline. Report by bp on gulf spill hints at likely legal defense. Investigation lines of inquiry key events of the accident timeline macondo well details, geology and well design 4 critical factors leading up to the accident 8 key findings of the investigation estimates of the total spill size recommendations to prevent recurrence 12015 deep water horizon accident investigation report 3.
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