Buster Beaver Cerakote
Oregon Rifleworks
Southwest Firearms
Advertise on Northwest Firearms
Defensive Arts
Gun Deals
Oregon Arms & Ammunition
Simply Triggers
Low Price Guns
Sporting Systems
HighLine Firearms
J&B Firearm Sales
A blowout preventer (BOP) is a large, specialized valve or similar mechanical device, used to seal, control and monitor oil and gas wells to prevent blowouts, the uncontrolled release of crude oil and/or natural gas from a well. They are usually installed in stacks of other valves.
Blowout preventers were developed to cope with extreme erratic pressures and uncontrolled flow (formation kick) emanating from a well reservoir during drilling. Kicks can lead to a potentially catastrophic event known as a blowout. In addition to controlling the downhole (occurring in the drilled hole) pressure and the flow of oil and gas, blowout preventers are intended to prevent tubing (e.g. drill pipe and well casing), tools and drilling fluid from being blown out of the wellbore (also known as bore hole, the hole leading to the reservoir) when a blowout threatens. 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 (pronounced B-O-P, not "bop") is used in oilfield vernacular to refer to blowout preventers. The abbreviated term preventer, usually prefaced by a type (e.g. ram preventer), is used to refer to a single blowout preventer unit. A blowout preventer may also simply be referred to by its type (e.g. ram).
The terms blowout preventer, blowout preventer stack and blowout preventer system are commonly used interchangeably and in a general manner to describe an assembly of several stacked blowout preventers of varying type and function, as well as auxiliary components. A typical subsea deepwater blowout preventer system includes components such as electrical and hydraulic lines, control pods, hydraulic accumulators, test valve, kill and choke lines and valves, riser joint, hydraulic connectors, and a support frame.
Two categories of blowout preventer are most prevalent: ram and annular. BOP stacks frequently utilize both types, typically with at least one annular BOP stacked above several ram BOPs.
(A related valve, called an inside blowout preventer, internal blowout preventer, or IBOP, is positioned within, and restricts flow up, the drillpipe. This article does not address inside blowout preventer use.)
Blowout preventers are used on land wells, offshore rigs, and subsea wells. Land and subsea BOPs are secured to the top of the wellbore, known as the wellhead. BOPs on offshore rigs are mounted below the rig deck. Subsea BOPs are connected to the offshore rig above by a drilling riser that provides a continuous pathway for the drill string and fluids emanating from the wellbore. In effect, a riser extends the wellbore to the rig. Unfortunately, blowout preventers do not always function correctly. An example of this is the Deepwater Horizon blowout, where the pipe line going through the BOP was slightly bent and the BOP failed to cut the pipe.

View More On Wikipedia.org
  1. The Courier

    9mm case blowout

    After reloading thousands of 9mm it finally happened case blowout. 10 rounds loaded and on round 6 all I saw was a blast of white smoke and a quick sense of heat on my finger, but to make matters worse as I saw the smoke my vision blurred and it hit me... my safety glasses were on my hat instead...
  2. LuckySG

    Clearance Firearms - All New in Box

    I have a few stragglers (All are NEW firearms) taking up room where new brands need to go up on display. If you have interest in any of the following reach out or just stop by, the prices can't get any lower, except I will give a 2% cash/check payment discount. Trailblazer Arms Lifecard $331...
Southwest Firearms Forum
Oregon Arms & Ammunition
Advertise on Northwest Firearms
Cerberus Training Group
Project Appleseed
Sporting Systems
NW Custom Firearms
Copeland Custom Gunworks
Top Bottom