Righting type downhole cable protector

A protector and cable technology, which is applied in the field of underground cable protectors, can solve problems such as protector failure and achieve the effect of ensuring safety

Inactive Publication Date: 2015-08-19
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that when the single-connection and double-connection cable protectors used in the field have a large inclination angle, after the cable protector is subjected to the lateral force of the tubing string, the protector fails and causes an accident

Method used

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  • Righting type downhole cable protector
  • Righting type downhole cable protector
  • Righting type downhole cable protector

Examples

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Embodiment Construction

[0031] The present invention proposes a supporting type downhole cable protector, which is provided with a tubular body, the inner surface of the tubular body protrudes radially outward to form an inner cable groove, and the outer surface of the tubular body is uniformly distributed with a plurality of centralizing ribs along the circumferential direction , the centralizing rib is arranged radially along the tubular body, its inner end is connected with the outer surface of the tubular body, and its outer end is connected with a drag reducing roller, the inner surface of the tubular body is on the inner surface of the inner cable The part outside the groove is provided with a rubber pad.

[0032] The upright downhole cable protector of the present invention can effectively upright the tubing string and reduce the frictional resistance between the protector and the inner wall of the casing, thereby ensuring effective protection of the downhole cable and preventing the cable from...

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Abstract

The invention provides a righting type downhole cable protector, which is provided with a tubular body, wherein the inner side surface of the tubular body protrudes outwardly along the radial direction to form an internal cable groove, a plurality of righting rib plates are evenly distributed on the outer side surface of the tubular body along the circumferential direction, the righting rib plates are arranged along the radial direction of the tubular body, the inner end of each righting rib plate is connected with the outer side surface of the tubular body, the outer end of each righting rib plate is connected with a drag reduction roller, and the inner side surface of the tubular body is provided with a rubber cushion layer on the part except the internal cable groove. The righting type downhole cable protector can be used for righting an oil pipe column effectively, and reduces the frictional resistance between the protector and the inner wall of a casing pipe, thereby ensuring effective protection of the downhole cable, and prevents the occurrence of downhole accidents such as the cable is cut off by clamping and pulled off.

Description

technical field [0001] The invention belongs to the technical field of oil field development, in particular to the technical field of electric submersible pump oil production in highly deviated wells, and in particular relates to a vertical downhole cable protector. Background technique [0002] At present, electric submersible pump oil recovery technology is widely used in domestic oil fields, especially offshore oil fields. When the well inclination angle is large, the electric submersible pump cable is not centered during the lifting and lowering process of the tubing string, causing the cable to be stuck. Downhole accidents such as winding and breaking occur from time to time. The main reason is that when the inclination angle of single-connection and double-connection cable protectors used in the field is large, the protector fails and causes accidents after the cable protector is subjected to the lateral force of the tubing string. [0003] In view of this, the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G9/06
Inventor 阚长宾高立江李晓勇胡昌蓬王建王宁辉黄武鸣王肖磊张威李鹏许雪菲高艳妮邢盼盼
Owner PETROCHINA CO LTD
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