Bidirectional olive-cone-shaped pumping well anti-eccentric connecting device
A connection device and a technology for pumping wells, which are applied in the direction of drilling equipment, earthwork drilling, drill pipes, etc., can solve the problems of increased maintenance costs of oil well operations, affecting the normal production of pumping wells, and the effect of anti-eccentric wear is not obvious, etc., to achieve a simple structure , long anti-wear time, and the effect of increasing crude oil output
Inactive Publication Date: 2015-06-17
XIAN XIDIAN SOFTWARE
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Problems solved by technology
Although there are many types of anti-eccentric wear devices for sucker rods, the effect of anti-eccentric wear is not obvious during field use, and there is still a problem of local severe wear, which causes damage and breakage of sucker rods and oil pipes, directly Affect the normal production of the pumping well, resulting in an increase in the maintenance cost of the oil well operation
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[0015] The present invention will be described in detail below in combination with specific embodiments.
[0016] The invention relates to a two-way olive-cone anti-eccentric wear connection device for pumping wells, which is provided with a central rod 2, and the upper and lower ends of the central rod 2 are respectively connected with a cylindrical upper joint 1 and a lower joint 4. The central rod 2 between the upper joint 1 and the lower joint 4 is covered with a cylindrical wear-resistant body 3; the diameter of the wear-resistant body 3 is larger than that of the upper joint 1 and the lower joint 4, and is connected There are gaps in between. The center of the bottom surface of the upper joint 1 and the top surface of the lower joint 4 are provided with a deviation correction body 5, which is in the shape of an olive end; the diameter of the deviation correction body 5 of the upper joint 1 decreases downward from the bottom surface of the upper joint 1, and the The diam...
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The invention relates to a bidirectional olive-cone-shaped pumping well anti-eccentric connecting device. In the on-site use process of a sucker rod anti-eccentric device, the anti-eccentric effect is not obvious, and consequently a sucker rod and an oil pipe are damaged and fall off. A center rod is arranged, and the upper end and the lower end of the center rod are connected with an upper connector and a lower connector. The center rod between the upper connector and the lower connector is sleeved with an anti-wear body. The diameter of the anti-wear body is larger than that of the upper connector and the lower connector, and clearances exist between the anti-wear body and the upper connector and between the anti-wear body and the lower connector. Correction bodies are arranged in the center of the bottom face of the upper connector and the center of the top face of the lower connector, and are in an olive end shape. Correction holes with the shape the same as that of the correction bodies are formed in the upper end face and the lower end face of the anti-wear body, and circular beads are arranged on hole openings of the correction holes. The device is long in wear resisting time, the situation that the sucker rod and the oil pipe are in direct contact to generate wear is avoided, the service life of the sucker rod and the service life of the oil pipe are prolonged, and normal production of an oil well is kept.
Description
technical field [0001] The invention relates to a device for preventing eccentric wear of sucker rods and oil pipes in oil exploitation operations, in particular to a two-way olive-cone anti-eccentric wear connection device for oil pumping wells. Background technique [0002] As oilfield development enters the middle and late stages, the phenomenon of eccentric wear of sucker rods and tubing will intensify, seriously affecting oilfield production. Although there are many types of anti-eccentric wear devices for sucker rods, the effect of anti-eccentric wear is not obvious during field use, and there is still a problem of local severe wear, which causes damage and breakage of sucker rods and oil pipes, directly Affect the normal production of the pumping well, resulting in an increase in the maintenance cost of the oil well operation. Contents of the invention [0003] The object of the present invention is to provide a two-way olive-cone anti-eccentric wear connection d...
Claims
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IPC IPC(8): E21B17/02E21B17/10
CPCE21B17/1085E21B17/042E21B17/1071E21B17/1078
Inventor 周永国杨明武海龙王征孟庆德党峰
Owner XIAN XIDIAN SOFTWARE