Combined wellhead packing box
A combined packing box technology, which is applied in wellbore/well components, earthwork drilling, sealing/packing, etc., can solve the problems of high cost of use, insufficient sealing, inconvenient packing box disassembly and internal maintenance, etc. , to achieve the effect of simple use and low cost
Pending Publication Date: 2021-11-30
淮安市井神钻采机具有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a combined wellhead packing box to solve the problem that the current wellhead packing box proposed in the above-mentioned background technology is mostly a whole. Disassemble and repair the interior, resulting in high cost of use
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[0020] see Figure 1-4 , the present invention provides a technical solution: a combined wellhead packing box, including a box body 1, the upper end of the box body 1 is sleeved with a pressure cap 2, the inner wall of the pressure cap 2 is slidably connected with the outer wall of the box body 1, and the box body 1 is longitudinally provided with a polished rod 3, the upper end of the polished rod 3 penetrates the upper side wall of the pressure cap 2 and extends to the upper end of the pressure cap 2, and the inside of the box body 1 is longitudinally provided with a compression piston 4, the outer wall of the compression piston 4 and the The inner wall of the box body 1 is slidably connected, the upper end of the compression piston 4 is fixedly connected with the inner wall of the pressure cap 2, the lower end of the box body 1 is provided with a packing 5 slidingly, and the outer wall of the packing 5 is slidably connected with the inside of the box body 1, The lower end o...
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The invention belongs to the technical field of petroleum machinery, and particularly relates to a combined wellhead packing box. The combined wellhead packing box comprises a box body, a pressing cap is arranged at the upper end of the box body in a sleeving mode, the inner wall of the pressing cap is slidably connected with the outer wall of the box body, and a polish rod is longitudinally arranged in the box body. The upper end of the polish rod penetrates through the upper side wall of the pressing cap and extends to the upper end of the pressing cap, a pressing piston is longitudinally arranged in the box body, the outer wall of the pressing piston is in sliding connection with the inner wall of the box body, the upper end of the pressing piston is fixedly connected with the inner wall of the pressing cap, and packing is arranged at the lower end in the box body in a sliding mode. The outer wall of the packing is in sliding connection with the interior of the box body, and the lower end of the pressing piston makes contact with the upper end of the packing, so that after long-time use, when the interior of the packing box needs to be maintained, the packing box can be rapidly disassembled, the packing box can be rapidly assembled after being maintained, use is easy, and the use cost is low.
Description
technical field [0001] The invention relates to the technical field of petroleum machinery, in particular to a combined wellhead packing box. Background technique [0002] In the process of oil production in the oil field, the oil production wellhead is connected with the oil pipe and the casing to control the underground pressure and output the crude oil. It is connected to the oil pipeline and the input water pipeline on the ground, and at the same time provides a connection port for the pumping unit and the pump. A packing box is installed on the connection port. [0003] However, when the existing wellhead packing box is produced, it is often a whole. When the sealing effect of the wellhead packing box declines after a long time of use, it is inconvenient to disassemble the packing box and maintain the inside, resulting in the use of The cost is higher, so a combined wellhead packing box is proposed. Contents of the invention [0004] The purpose of the present inven...
Claims
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IPC IPC(8): E21B33/03E21B41/00
CPCE21B33/03E21B41/00
Inventor 郭乃宏郭湧郭峰郭敏
Owner 淮安市井神钻采机具有限公司