Oil well dynamic plastic injection packing sealing wellhead device and method
A packing sealing and wellhead device technology, which is applied in sealing/isolation, wellbore/well parts, earthwork drilling and production, etc., can solve the problems of low packing utilization rate, single function, and short packing replacement cycle, and achieve Convenient device maintenance, low energy consumption, saving manpower and time
Active Publication Date: 2015-08-26
王亚祥
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Problems solved by technology
Most of the existing wellhead sealing devices have single functions and unreasonable packing structure, resulting in low packing utilization rate, complicated operation process, poor safety, short packing replacement cycle, prolonged maintenance time, and low production efficiency
However, traditional wellhead seals do not function well with pellets, resulting in waste and difficult cleanup
Method used
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[0008] Below in conjunction with accompanying drawing, the present invention will be further described:
[0009] The oil well dynamic plastic injection packing sealing wellhead device of the present invention is composed of a first-stage packing box 1, a second-stage packing box 2, a well sealing valve 3, an eccentric centering plate 4 and a blowout prevention ball 5. There is a packing pressing cap 6 on the top of the first-stage packing box 1, and a first plastic injection port 7 is arranged on the pipe wall, and the lower end of the first-stage packing box 1 is connected with the upper end of the second-stage packing box 2; the second-stage packing box 2 The lower end of the casing 9 is connected with the casing 9 by adjusting the pressure cap 8, and a second plastic injection port 10 is provided on the pipe wall of the casing 9, and the lower end of the casing 9 is connected with the sealing valve 3; There is an oil drain port 11 on the pipe wall at the joint of the sectio...
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The invention discloses a device and a method for sealing an opening of an oil well by dynamic plastic injection of packing and belongs to a device for sealing an opening of an oil pumping unit well. The device for sealing the opening of the oil well by dynamic plastic injection of packing consists of a first section packing box, a second section packing box, a well sealing valve, an eccentric centering disk and a blowout prevention ball, wherein the top of the first section packing box is provided with a packing press cap; a pipe wall is provided with a first plastic injection port; the lower end of the first section packing box is connected with the upper end of the second section packing box; the lower end of the second section packing box is connected with a sleeve through an adjustment press cap; the wall of the sleeve is provided with a second plastic injection port; the lower end of the sleeve is connected with the well sealing valve; the pipe wall at the connection of the first section packing box and the second section packing box is provided with an oil drain port; and the oil drain port is connected with a collection bottle through a pup joint. According to the device and the method for sealing the opening of the oil well by the dynamic plastic injection of the packing, dynamic injection is adopted by the packing, so that the packing boxes can be injected with particle materials without well stopping, the use rate of the packing reaches 100%, the injection of the particle materials without well stopping is realized, device maintenance is facilitated, and labor power and time for packing replacement are saved; and the device and the method are low in energy consumption and safe and environment-friendly, and have the benefits of energy conservation, efficiency improvement and burden reduction.
Description
technical field [0001] The invention belongs to a wellhead sealing device for an oil pumping well, and in particular relates to a dynamic type glue injection packing sealing device and method for an oil well. Background technique [0002] During oil extraction operations, wellhead seals and eccentric wear directly affect the efficiency of oil extraction. Most of the existing wellhead sealing devices have single functions and unreasonable packing structure, resulting in low packing utilization rate, complicated operation process, poor safety, short packing replacement cycle, prolonged maintenance time and low production efficiency. Traditional wellhead seals, however, do not function well with pellets, resulting in waste and difficult cleanup. Contents of the invention [0003] In order to solve the above problems, the present invention aims to provide a dynamic type glue injection packing sealing device and method for oil wells with reasonable design, safety, energy savin...
Claims
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IPC IPC(8): E21B33/03
Inventor 王亚祥吴德勇于永海
Owner 王亚祥