Method for arranging cable in continuous oil pipe

A technology for oil pipes and cables, which is applied in the field of built-in cables in coiled tubing, which can solve problems such as cable damage, low operating efficiency, and complicated operating procedures, and achieve the effects of preventing cable damage, reducing the rate of wax deposition, and simple operating procedures

Active Publication Date: 2018-03-09
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The method provided by the prior art to fix the cable on the multi-section connected oil pipe by using cable clamps has complicated operation procedures and low operation efficiency, and it is easy to cause cable damage during the operation process or during the operation of the motor

Method used

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  • Method for arranging cable in continuous oil pipe
  • Method for arranging cable in continuous oil pipe
  • Method for arranging cable in continuous oil pipe

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] The embodiment of the present invention provides a method for a coiled tubing built-in cable, which is realized by the following equipment: coiled tubing 1, coiled tubing operation vehicle 2, well scraping and cleaning device 3, special elevator for coiled tubing 4 , cable 5, motor 6, electric submersible pump 7, solid wax preventer 8, cable inlet pipe joint 9, oil pipe nipple 10, control cabinet 11, the above equipment can be found in the attached figure 1 , attached figure 2 and attached image 3 , the specific steps of the method are as follows:

[0046] Step 101: Determine the target oil well, select a decommissioned tubing after fracturing as the coiled tubing 1, and then connect the well scraping and cleaning device 3 t...

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Abstract

The invention discloses a method for arranging a cable in a continuous oil pipe and belongs to the technical field of mechanical oil extraction. The method includes the steps of selecting a decommissioned continuous oil pipe as a conventional production oil pipe, and first performing pigging scraping and well washing operation; fixing the continuous oil pipe, cutting off the continuous oil pipe ata preset position, discharging a cable in an inner cavity of the continuous oil pipe to the lower end, connecting the continuous oil pipe again, and taking out all the continuous oil pipe to the ground; sequentially connecting a motor, an electric submersible pump, a solid paraffin control device and a cable oil inlet pipe connector, connecting the cable oil inlet pipe connector with the continuous oil pipe, fixing the continuous oil pipe with the built-in cable, cutting off part of redundant continuous oil pipe, connecting the upper end of a remaining part with an oil pipe short section, performing well opening setting, and connecting the cable with a control cabinet. According to the method, the damage to the cable can be avoided, an operation process is simple, and construction operation and operation efficiency in an overhaul in-well device can be improved.

Description

technical field [0001] The invention relates to the technical field of mechanical oil recovery, in particular to a method for a coiled oil tube with a built-in cable. Background technique [0002] In oil field production, the liquid in the oil well can be lifted to the surface through the lifting operation of the electric submersible pump. Among them, before the electric submersible pump is installed in the oil well, operations such as well scraping and well washing need to be performed on the oil well to meet the operation requirements of the oil well. Moreover, the electric submersible pump in the oil well needs the motor to provide electric energy for the lifting operation, and the electric energy needs to be transmitted through the cable. Therefore, a section of cable needs to be connected between the ground control cabinet and the motor at the lower end of the electric submersible pump, and the cable needs to be fixed. , otherwise the construction work cannot be realiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/02E21B21/00
CPCE21B17/023E21B21/00
Inventor 王林王凤山师国臣吴宁杜伟山孙延安王国庆
Owner PETROCHINA CO LTD
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