Suspension mechanism for downhole electric heating cable and suspension jam release method

A suspension mechanism and heating cable technology, applied in drilling equipment, earthwork drilling, wellbore/well components, etc., can solve problems such as technical content not mentioned

Active Publication Date: 2019-02-19
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Suspension mechanism for downhole electric heating cable and suspension jam release method
  • Suspension mechanism for downhole electric heating cable and suspension jam release method

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[0027] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.

[0028] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements ...

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Abstract

The embodiment of the invention discloses a suspension mechanism for a downhole electric heating cable and a suspension jam release method. The suspension mechanism for the downhole electric heating cable comprises a lower connecting part, an upper connecting part and a slip mechanism; the lower part of the lower connecting part is provided with a connecting part used for being connected with a hollow rod, and the lower connecting part is provided with a first penetrating hole allowing the electric heating cable to penetrate and penetrating from top to bottom, and an upwards-opened chamber; the upper connecting part is provided with a second penetrating hole allowing the electric heating cable to penetrate and penetrating from top to bottom; and the upper end of the lower connecting part and the lower end of the upper connecting part can be connected through threads, the lower part of the upper connecting part can be connected with the slip mechanism through magnetism, and the slip mechanism is arranged in the chamber. According to the suspension mechanism for the downhole electric heating cable and the suspension jam release method, in the suspension process, the locking degree ofthe electric heating cable is high; jam release of the suspension mechanism is easy; and the suspension mechanism is demounted and mounted conveniently and quickly.

Description

technical field [0001] The present application relates to the field of oilfield applications, in particular to a suspension mechanism for downhole electric heating cables and a method for unblocking the suspension. Background technique [0002] Oil well electric heating is used in oil field lifting. It is the most common auxiliary equipment for oil field in oil well lifting system. It needs to use Oil well electric heating equipment can reduce the viscosity of crude oil, improve the fluidity of crude oil, and prevent pipelines from freezing in winter. [0003] After completion of oil well electric heating, heating cables need to be lowered into the hollow rod. In the process of applying this technology, due to the long-term and frequent use of cables, the length of the heating cables lowered into the hollow rod in some oil wells is not enough, and the cable can only be hung in the hollow rod. , In this case, the on-site operators temporarily adopt the solution of fixing the...

Claims

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Application Information

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IPC IPC(8): E21B36/04E21B17/02E21B19/10
CPCE21B17/026E21B19/10E21B36/04
Inventor 孙立军高航段效威王德伟贾财华高玉军庞全书肖家宏孙强刘伟梁海波蒋明付尧单祥斌汪宁赵守清
Owner PETROCHINA CO LTD
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