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Flexible universal connecting short section for high-inclination and horizontal wells

A universal connection and horizontal well technology, applied in drilling equipment, wellbore/well components, measurement, etc., can solve problems such as obstruction of entry pipe string or instrument, reduction of operation success rate and operation efficiency, length of downhole tools, etc.

Pending Publication Date: 2021-07-06
高庆伟 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For dynamic monitoring of highly inclined wells and horizontal wells, currently effective techniques include: tubing transportation, hydraulic transportation, coiled tubing transportation, downhole electronic tractor (crawler) transportation, etc., but in high-inclination For wells and horizontal wells, because of their large slope, long running tools, large outer diameter, and strong rigidity (not easy to bend), the entry string or instruments are prone to encounter obstructions, which greatly reduces the success rate and efficiency of operations

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  • Flexible universal connecting short section for high-inclination and horizontal wells
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  • Flexible universal connecting short section for high-inclination and horizontal wells

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] see Figure 1-6 , the invention provides a technical solution: a flexible universal joint sub-joint for high-inclination and horizontal wells, including a bendable flexible joint 6, one end of which is fixed with a first flexible joint joint 5, The other end of the first flexible joint 5 is fixed with an upper joint 2, the other end of the upper joint 2 is fixed with an upper plug 1, and the inside of the upper joint 2 is provided with a first single-co...

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Abstract

The invention discloses a flexible universal connecting short section for high-inclination and horizontal wells. The flexible universal connecting short section comprises a bendable flexible section, wherein a first flexible section joint is fixed at one end of the flexible section; an upper joint is fixed at the other end of the first flexible section joint; an upper plug is fixed at the other end of the upper joint; a first single-core rubber socket is arranged in the upper joint along the axis direction; silicone grease is filled in the flexible section along the axis direction; a second flexible section joint is fixed at the other end of the flexible section; a lower joint is fixed at the other end of the second flexible section joint; a lower protective cap is fixed at the other end of the lower joint; a second single-core rubber socket is arranged in the lower joint along the axis direction; and an insulating pad B is arranged at the end part of the second single-core rubber socket. The flexible universal connecting short section has the beneficial effects that the passing rate of the high-inclination and horizontal wells can be effectively increased, the operation time is shortened, a test instrument can smoothly reach a test layer, and the operation success rate is further increased.

Description

technical field [0001] The invention relates to the technical field of drill pipes, in particular to a flexible universal connection sub-joint for high-inclination and horizontal wells. Background technique [0002] For dynamic monitoring of highly inclined wells and horizontal wells, currently effective techniques include: tubing transportation, hydraulic transportation, coiled tubing transportation, downhole electronic tractor (crawler) transportation, etc., but in high-inclination For wells and horizontal wells, because of their large slope, long running tools, large outer diameter, and strong rigidity (not easy to bend), the entry string or instruments are prone to encounter obstructions, which greatly reduces the success rate and efficiency of operations . [0003] Therefore, invent a flexible universal connection short for highly deviated and horizontal wells that can effectively improve the passing rate of instruments in deviated wells, shorten the operation time, en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00E21B47/01
CPCE21B17/00E21B47/01
Inventor 高庆伟邵矿州李星安乔东东李阿文韩金霞孙志宏柴志东毕渤张佳黄世幸
Owner 高庆伟
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