Fishing oil tube overflow controller

A controller and overflow technology, applied in wellbore/well parts, earthwork drilling, sealing/isolation, etc., can solve problems such as resistance, multiple blockages, and insufficient blockage, so as to achieve convenient operation and cost saving , the effect of simple structure

Inactive Publication Date: 2010-12-01
濮阳市领越石油技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Due to a lot of dirt on the inner wall of the oil pipe, there is often blockage, and the current overflow controller of the oil pipe has a large diameter, which needs to be tr...

Method used

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  • Fishing oil tube overflow controller
  • Fishing oil tube overflow controller

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Embodiment Construction

[0015] In the fishable oil pipe overflow controller, a core is arranged in the casing, and an end cover is arranged on the top of the core, and the centralizer passes through the end cover and is fixed with the core through the suspension body.

[0016] A groove is formed on the inner wall of the casing, and a through hole is formed on the side wall of the core corresponding to the groove, and the suspension body passes through the through hole and is located in the groove. One end of the suspension body is processed into a spherical shape, the middle part is a cylinder with the same diameter as the ball, and the other end is a cylinder with a larger diameter than the middle cylinder. The spherical end of the suspension body matches the groove on the inner wall of the housing.

[0017] The diameter of the lower end of the centralizer is greater than the diameter of the circular hole on the end cap. There is an umbrella-shaped salvage head on the top of the centralizer.

[00...

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Abstract

The invention relates to an oil tube overflow control device, in particular to a fishing oil tube overflow controller. The fishing oil tube overflow controller is characterized in that a shell is internally provided with a core, the top end of the core is provided with an end cover, and a centralizer body penetrates through the end cover to be fixed with the core by a suspended body. The invention has the advantages of simple structure, reliability and convenient operation, a fishing head is coordinated with common detecting fishing tools and equipment; and additional equipment are in no needof being purchased.

Description

Technical field: [0001] The invention relates to an oil pipe overflow control device, in particular to a fishable oil pipe overflow controller. Background technique: [0002] In snubbing wells, overflow wells, and self-spraying and pumping wells, overflow controllers are required. [0003] Due to a lot of dirt on the inner wall of the oil pipe, there is often blockage, and the current overflow controller of the oil pipe has a large diameter, which needs to be transported by cables and ropes. The disadvantage of blockage, and the workload of the overflow controller of the lower cast is large and requires the cooperation of cables and rope vehicles. Invention content: [0004] The present invention proposes a new technical solution aiming at the above problems. The invention has the advantages of simple structure and convenient use, can be matched with testing and fishing tools and equipment commonly used in oil fields, and has good plugging effect. [0005] The technical...

Claims

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Application Information

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IPC IPC(8): E21B33/12E21B31/00
Inventor 袁海坤陈丁才苏愿忠杜长征张磊李晓林金铸刘国栋
Owner 濮阳市领越石油技术有限公司
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