Blowout Preventers for Well-Boring or DrillingBlowout Preventers also known as a BOP is a large valve that is able to seal off at the surface of a well that is being worked upon or drilled over. Preventers may have their valve closed during well interventions or drilling if there is an over pressure created as a result of an under ground zone resulting in the formation of fluids such as natural gas or oil to enter the well bore and threaten the proper functioning of the rig. Blowout preventer can be affected by closing the valve that is generally operated with the help of remote control through the hydraulic actuators.
High Closing Ratio
Yes, an oil well can be "shut off" by the use of a device that has a hydraulic ram that can crush and seal a pipe (or simply shut a valve) to secure a wellhead. The so-called "blowout preventer" is such a device, but in the case of the current disaster in the Gulf of Mexico, the device failed (owing to a failure to replace a battery, as one report had it).
One of the application of the control valve with positioner is that it is used to control the opening and closing of the actuator based on electric or pneumatic signals. The opening or closing of control valves is usually done automatically by electrical, hydraulic or pneumatic actuators.
A Storm valve is basically a Swing check valve with a Closing device. The closing device is usually a hand wheel but they can also be actuated. Storm valves are usually found on ships in sanitary piping systems which have a ships side exit. They prevent sea water entering the system during a heavy sea.
Blowout Preventers for Well-Boring or DrillingBlowout Preventers also known as a BOP is a large valve that is able to seal off at the surface of a well that is being worked upon or drilled over. Preventers may have their valve closed during well interventions or drilling if there is an over pressure created as a result of an under ground zone resulting in the formation of fluids such as natural gas or oil to enter the well bore and threaten the proper functioning of the rig. Blowout preventer can be affected by closing the valve that is generally operated with the help of remote control through the hydraulic actuators.
High Closing Ratio
a backflow preventer valve
The rig's blowout preventer, a fail-safe device fitted at source of the well, did not automatically cut off the oil flow as intended when the explosion occurred. BP attempted to use remotely operated underwater vehicles to close the blowout preventer valves on the well head 5,000 feet below sea level, a valve-closing procedure taking 24-36 hours.
A LUDICROUS hypothesis. Do you REALLY think they purposely caused themselves all this grief and expenditure of BILLIONS of dollars.The best testimony on this subject came a few days after the blowout, from one of the surviving workers from the rig. They (BP/the contractors) KNEW they had damaged the blowout preventer valve earlier on in the drilling procedure. "SOMEONE," SOMEWHERE," made a purely cost-based (and criminal) decision NOT to replace the damaged blow-out valve probably gambling the odds that nothing would ever happen.
Yes, you can reduce water pressure by closing a valve.
The Illeocecal valve
A dual check valve is similar to a double check valve in that it is a mechanical backflow preventer consisting of two independently acting, spring-loaded check valve.
some engineers believe that HCR stands for High Closing Ratio. but Hydraulic Control Remote seems to be more related and is more correct. my reference is www.oilfield-dictionary.com/hcr-valve/
what
A backflow preventer valve is used to stop water from flowing in the wrong direction in a plumbing system. It helps maintain the integrity of the system by preventing contaminated water from flowing back into clean water sources, ensuring that the water remains safe for use.
Yes, an oil well can be "shut off" by the use of a device that has a hydraulic ram that can crush and seal a pipe (or simply shut a valve) to secure a wellhead. The so-called "blowout preventer" is such a device, but in the case of the current disaster in the Gulf of Mexico, the device failed (owing to a failure to replace a battery, as one report had it).