Explosive blast emergency well shutdown device
An explosive and emergency technology, applied in wellbore/well components, earthwork drilling, sealing/isolation, etc., can solve the problems of difficult access control, simultaneous fires, environmental pollution, etc., and achieve the effect of improving redundancy
Pending Publication Date: 2019-01-25
MEIZUAN SHENHAI ENERGY TECH RES & DEV SHANGHAI CO LTD +1
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Problems solved by technology
[0002] Oil drilling is a high-risk job. During the drilling process, there is high-pressure oil and gas underground. If the control is not good, it will blow out of the well. Blowout accidents have caused casualties and caused great pollution to the environment.
The current well control equipment uses hydraulic oil to close the oil well, but after a blowout occurs, a large fire often occurs at the same time. After the oil well is on fire, it is difficult for people to approach the control, and the hydraulic control system will be burned out after the fire, resulting in well control. fail
Method used
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Embodiment Construction
[0016] Such as figure 1 As shown, an explosive explosion emergency shut-in device of the present invention is equipped with a shear ram 6 inside the well control blowout preventer, which can use the thrust generated by the explosive 2 to close the blowout preventer.
[0017] The oil storage flange 4, the intermediate flange 5, and the housing 7 are connected by connectors, and the end of the side of the oil storage flange 4 that is not connected to the intermediate flange 5 is provided with a mounting groove for placing the explosive 2, and is provided with The back cover 1 closes the installation groove. A space for accommodating the first end of the piston 3 is formed in the oil storage flange 4, and the space communicates with the installation groove of the explosive 2; connect. The area of the first end of the piston 3 in this example is larger than the area of the second end.
[0018] The explosive 2 installed in the oil storage flange 4 is detonated by remote oper...
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The invention provides an explosive blast emergency well shutdown device. A shear ram is mounted in a casing of a well drilling well control blowout preventer. The casing is connected with an intermediate flange and an oil storage flange through a connecting piece, the oil storage flange is provided with a mounting groove for placing an explosive capable of being remotely operated, a space for accommodating the first end of a piston is formed in the oil storage flange, the space is communicated with an opening inside a mounting groove of the explosive, and the second end of the piston passes through the intermediate flange and enters the casing and is connected with the shear ram. Thrust generated by remotely-controlled explosive explosion pushes the piston and the shear ram connected therewith, a petroleum drill rod is cut off by the shear ram, the blowout preventer is quickly shut down, and blowout is interrupted. According to the explosive blast emergency well shutdown device, the problems in the prior art are solved, the redundancy of the control safety of a petroleum drilling well control device is improved, and the petroleum drilling operation is safer and more reliable.
Description
technical field [0001] The invention belongs to the field of oil drilling well control, and relates to an emergency device for quickly closing the well head after a blowout occurs in the oil drilling. Background technique [0002] Oil drilling is a high-risk job. During the drilling process, there is high-pressure oil and gas underground. If the control is not good, it will blow out of the well. Blowout accidents have caused casualties and caused great pollution to the environment. The current well control equipment uses hydraulic oil to close the oil well, but after a blowout occurs, a large fire often occurs at the same time. After the oil well is on fire, it is difficult for people to approach the control, and the hydraulic control system will be burned out after the fire, resulting in well control. fail. Contents of the invention [0003] The invention provides an explosive explosion emergency shut-in device, which can work independently after a blowout occurs, withou...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B33/06
CPCE21B33/063
Inventor 张福才汪智
Owner MEIZUAN SHENHAI ENERGY TECH RES & DEV SHANGHAI CO LTD