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Contaminated drinking water poses a large threat to communities' public health, and several vulnerability factors, which include community water sources and demographic characteristics, are heavily associated with violations to the Safe Drinking Water Act and its amendments outlined in the Wellhead Protection Program.
Modern wells have blowout preventers intended to prevent such an occurrence. An accidental spark during a blowout can lead to a catastrophic oil or gas fire. Prior to the advent of pressure control equipment in the 1920s, the uncontrolled release of oil and gas from a well while drilling was common and was known as an oil gusher, gusher or wild ...
Casing heads are the primary interface for the surface pressure control equipment, for example blowout preventers (for well drilling) or the Christmas tree (for well production). The casing head, when installed, is typically tested to very strict pressure and leak-off parameters to insure viability under blowout conditions, before any surface ...
In exploration wells that are later abandoned, the wellhead may be recovered for refurbishment and re-use. Offshore, where a wellhead is located on the production platform it is called a surface wellhead , and if located beneath the water then it is referred to as a subsea wellhead or mudline wellhead.
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Well drilling is the process of drilling a hole in the ground for the extraction of a natural resource such as ground water, brine, natural gas, or petroleum, for the injection of a fluid from surface to a subsurface reservoir or for subsurface formations evaluation or monitoring.
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