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[4] [5] During drilling operations, complex accidents such as gas invasion and overflow are prone to occur. [6] In addition, deep strata have poor diagenesis , weak pressure bearing capacity, so leakage is easy to happen, the risk of well control is high, and the treatment is difficult, which impact on deepwater wellbore integrity seriously.
Shear rams may be used as a last resort [17] to cut through the drill pipe and shut off everything, including whatever might be coming up inside the drill pipe. Studies done for the Minerals Management Service have questioned the reliability of shear rams in deep-water drilling. Figure 1 shows the result of a 2002 study on offshore oil rigs.
Blowout preventers are critical to the safety of crew, rig (the equipment system used to drill a wellbore) and environment, and to the monitoring and maintenance of well integrity; thus blowout preventers are intended to provide fail-safety to the systems that include them. The term BOP is used in oilfield vernacular to refer to blowout preventers.
When offshore drilling moved into deeper waters of up to 30 metres (98 ft), fixed platform rigs were built, until demands for drilling equipment was needed in the 100 feet (30 m) to 120 metres (390 ft) depth of the Gulf of Mexico, the first jack-up rigs began appearing from specialized offshore drilling contractors. [11]
Subsea wells have pressure control equipment located on the seabed or between the riser pipe and drilling platform. Blowout preventers (BOPs) are the primary safety devices designed to maintain control of geologically driven well pressures. They contain hydraulic-powered cut-off mechanisms to stop the flow of hydrocarbons in the event of a loss ...
Download as PDF; Printable version; ... A drilling rig is an integrated system that drills wells, ... it's important to take safety precautions, such as wearing ...
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The Bureau of Safety and Environmental Enforcement (BSEE / ˈ b ɛ s i / "Bessie") is an agency under the United States Department of the Interior. [1] Established in 2011, BSEE is an agency responsible for improving safety and ensuring environmental protection in the offshore energy industry, mainly natural gas and oil, on the United States Outer Continental Shelf (OCS). [2]