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Self-sealed compensated beam-pumping stabilizer

A technology for pumping oil and sucker rods, which is applied in the direction of production fluid, drilling equipment, wellbore/well components, etc., and can solve the problems of reduced centralizing effect, poor wear resistance, and easy movement of ordinary card-mounted centralizers, etc.

Inactive Publication Date: 2007-01-17
DAQING OILFIELD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these centralizers have some deficiencies. Common card-mounted centralizers are cheap, but their wear resistance is not strong. They slide up and down along with the sucker rod on the rod, which greatly reduces their centralizing effect, and they become colder when they are cold. It is relatively brittle, and the debris that falls off during the installation process falls into the wellbore and causes the pump to be stuck; although the short-rod centralizer solves the problem of easy movement of ordinary snap-fit ​​centralizers, its cost is expensive, which limits its use. scope

Method used

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  • Self-sealed compensated beam-pumping stabilizer
  • Self-sealed compensated beam-pumping stabilizer
  • Self-sealed compensated beam-pumping stabilizer

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Embodiment Construction

[0011] The invention discloses a self-styled compensation oil pumping and straightening device, which is used in a rod string oil well pump and plays the function of self-styled compensation oil pumping during the process of straightening the sucker rod string.

[0012] Self-proclaimed compensating oil pumping centralizing device of the present invention such as figure 1 As shown, the lower part of the boss 11 of the sucker rod 1 is connected to the collar 7 with an external thread, and a retaining ring 4 is clamped between the boss 11 and the collar 7, and then it is covered by the centralizing sleeve 5; the middle of the retaining ring 4 has A depressing tongue 41 protruding inward, the inner wall of the righting sleeve 5 is provided with a ring groove for the ring body 42 of the gear ring and the depressing tongue 41 to be inserted, and the depressing tongue 41 is tightly pressed by the boss 11 and the collar 7, so that the righting The sleeve 5 is connected with the sucker...

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PUM

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Abstract

This invention discloses a kind of compensated oil pumping centering guide device that is isolated itself. When centering guiding the sucker rod, this invention can compensate and pump oil isolating itself. After clamping baffle ring between the boss of sucker rod and the jointing hook connecting the external screw thread, the centering guiding cover is added. The crescent shaped leather package is nested on the baffle ring. The high anti-friction coating and centering guiding cover at the edge of leather package is used to centering guide and prevent sucker rod abrasion.

Description

Technical field: [0001] The invention relates to downhole tools used in the production field of oil field pumping units, in particular to a self-styled compensating pumping righting device used in rod string pumps. Background technique: [0002] Most oilfields in China have entered the stage of high water cut and ultra-high water cut development. Most oilfields adopt polymer flooding and ASP flooding to recover oil, which makes the oilfields recover efficiently, but also exposes some negative problems. At this time, the eccentric wear between the rod and tubing of the pumping unit is intensified, which has become a problem that seriously affects the efficient production of oil wells. In recent years, especially in recent years, the research and development of centralizers has made great progress. From the single clip-on type in the past, it has developed into a wide variety of different types of centralizers, such as short-rod type and welded type. Rod tube eccentric wear p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/10E21B43/00
Inventor 韩修廷侯宇梅小娥
Owner DAQING OILFIELD CO LTD
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