An electric pump wellhead anti-leakage high-pressure sealing device
A high-pressure sealing and anti-leakage technology, applied in sealing/isolation, wellbore/well parts, earthwork drilling and mining, etc., can solve the problems of easy entanglement of cables, low service life of cables, multiple equipment structures, etc., and achieve a protective effect High, the effect of improving the service life
Active Publication Date: 2021-12-10
BC P INC CHINA NAT PETROLEUM CORP +3
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Problems solved by technology
[0007] For this reason, the embodiment of the present invention provides an electric pump wellhead anti-leakage high-pressure sealing device to solve the problem in the prior art that the current wellhead is fixed and sealed by the external rubber and the anti-blowout box during the use of the cable. This causes the cable sheath to be easily worn. At the same time, if the cable at the wellhead is reserved for a long time, it will be easily wound. Once the cable moves, the friction with the gland and other components will intensify, resulting in a lower service life of the cable. And there are many equipment structures, the cost of installation and maintenance is relatively large, and it also makes the work efficiency of workers lower
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[0036] The embodiments of the present invention are described below by specific specific embodiments. Those who are familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0037] like figure 1 , figure 2 and image 3 As shown, the present invention provides an anti-leakage high-pressure sealing device for an electric pump wellhead, and a cable lead-out device 3 is arranged between the tubing hanger 1 and the gland 2 of the electric pump wellhead;
[0038] The cable lead-out device 3 includes a sealing kit 5 for wrapping the cable and preventing oil leakage, and an anti-disord...
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The embodiment of the invention discloses a leak-proof high-pressure sealing device at the wellhead of an electric pump. A cable lead-out device is provided between the oil pipe hanger and the gland at the wellhead of the electric pump. The cable lead-out device includes a The sealing kit, and the anti-disorder device used to prevent misalignment and winding of the cable, the sealing kit is installed on the outer wall of the gland, the device is provided with a sealing rubber sleeve and a connecting rubber sleeve, when the user fixes the cable, the seal set by the screw The rubber sleeve and the connecting rubber sleeve fix the cable to achieve preliminary sealing and prevent cable entanglement, and then seal the limit rubber sleeve set by the screw through the threaded ring to achieve the purpose of tight sealing, and the threaded sealing ring set by the screw and the sealing The rubber sleeve and connecting rubber sleeve will not be in contact with a large amount of oil during use, thereby greatly improving the service life of the equipment, and its operation is fast and the work efficiency of workers is improved.
Description
technical field [0001] The embodiments of the present invention relate to the field of oil and natural gas production, in particular to an anti-leakage high-pressure sealing device for an electric pump wellhead. Background technique [0002] With the development of petroleum industry and the needs of oilfield development, it is an important step in the whole oilfield development process to apply mechanical oil recovery method to improve oilfield oil recovery rate and ultimate recovery factor. After the depth is reached, the electric pump wellhead device can be installed. [0003] At present, in the construction of submersible electric pump wells, there are many kinds of submersible electric pump wellhead devices: [0004] One of them is the I-type electric pump wellhead, such as Figure 5 As shown, it is mainly composed of oil pipe hanger 1, flange 6, blowout prevention box 7, sealing rubber ring 8 and gland 2. Among them, the oil pipe hanger 1 is equipped with a gland 2, w...
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IPC IPC(8): E21B33/072
CPCE21B33/072
Inventor 石德佩吴频翟光华刘少华周海邢厚伟宋诗光李帅
Owner BC P INC CHINA NAT PETROLEUM CORP