Oil production wellhead sealing device
A sealing device and gasket technology, applied in the directions of sealing/isolation, earth-moving drilling, wellbore/well components, etc., can solve the problems of inability to meet existing demands, high failure rate of sealing rings, and low oil production rate. , to achieve the effect of superior sealing performance, long service life, and prevention of blowout
Inactive Publication Date: 2017-02-22
DONGYING JINYILAI PETROLEUM MACHINERY
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Problems solved by technology
Due to structural defects, the conventional polished rod sealing device has exposed many defects in the field application, the failure rate of the sealing ring is high, and the working time rate of oil production is low
Therefore, existing needs cannot be met
Method used
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[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0013] see Figure 1-2 , an embodiment provided by the present invention: an oil production wellhead sealing device, including a gland 2, a semicircular gasket 8, a conical sealing ring 9, a pressure relief pipe 11 and a sucker rod 14, and the gland 2 is connected to the first The body 3 is connected by the gland bolt 1, and the left side of the lower end of the gland 2 is connected with the upper right side of the first connecting body 3. The lower end of the...
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The invention discloses an oil production wellhead sealing device. The oil production wellhead sealing device comprises a pressure cover, semicircular seal gaskets, a conical seal ring, pressure relief pipes and an oil pumping rod. The pressure cover is connected with a first connector through pressure cover bolts, the conical seal ring is mounted at the lower end of the pressure cover, a second connector is mounted at the lower end of the first connector and fixedly mounted on a body, a seal ring is arranged between the second connector and the oil pumping rod, and the oil pumping rod is arranged in the middle of the body. Adjustment screws are arranged in the body which is connected with pressure relief plates through springs, the pressure relief pipes are arranged at the upper end of the body, the semicircular seal gaskets are mounted at the tail ends of the adjustment screws respectively, and a joint is fixedly mounted at the lower end of the body. By arrangement of the pressure relief plates and the pressure relief pipes, blowout can be effectively prevented, and buffering pressure relief is realized. In addition, the oil production wellhead sealing device is simple in structure and low in cost, downhole accidents are reduced, and production benefits of oil fields are increased.
Description
technical field [0001] The invention relates to the technical field of oil production equipment, in particular to an oil production wellhead sealing device. Background technique [0002] With the increasing demand for energy, oil extraction has become an important way of energy supply. With the prolongation of oilfield development process and production time, the workload of various technological measures of oil wells is increasing day by day. Wellhead devices are important equipment to ensure the normal production of oil wells, especially although there are many types of wellhead devices for oil production, their structures are also different. However, as the number of times of use increases, its shortcomings become more and more prominent. Its parts are often damaged and difficult to maintain, and it does not have a good sealing structure, which is easy to cause leakage accidents and cannot reliably perform multiple processes. Short service life increases the mining cost...
Claims
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Login to View More IPC IPC(8): E21B33/06
CPCE21B33/06
Inventor 刘国光常子恒刘欣徐波
Owner DONGYING JINYILAI PETROLEUM MACHINERY