Electric submersible pump discharging and mining device adapted to coiled tubing completion

A technology of electric submersible pumps and oil pipes, which is applied in the field of electric submersible pump drainage devices, can solve problems such as low construction efficiency, large formation damage, and frictional damage to the cable well wall, so as to realize snubbing operations, improve safety, and avoid risks Effect

Pending Publication Date: 2018-02-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the downhole electric submersible pump drainage system needs to be connected to the ground power supply through a power cable, special tools are required to bind the power cable to the outer circumference of the tubing, so that the conventional snubbing device cannot complete the tubing under pressure, and it must be controll

Method used

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  • Electric submersible pump discharging and mining device adapted to coiled tubing completion
  • Electric submersible pump discharging and mining device adapted to coiled tubing completion
  • Electric submersible pump discharging and mining device adapted to coiled tubing completion

Examples

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Example Embodiment

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] like Figure 1-5 As shown, this embodiment provides an electric submersible pump drainage and production device suitable for coiled tubing completion, including a cable suspension device 9, an overcurrent sub-section 10, a coiled tubing 16, a coiled tubing connector, The sealing sleeve 21, the conversion sub joint 26, the downhole motor 6, the downhole pump group 7, the upper end of the overcurrent subsection 10 is connected with the suspension device delivery joint 8, and the coiled tubing 26 is suspended by the coiled tubing suspension device 4, so The cable 17 suspended by the cable suspension device 9 extends into the coiled tubing 16 and passes through the cable sealing joint 23 on the conversion sub 26 to be arranged with the downhole motor 6 and the downhole pump set 7 .

[0024] The coiled tubing connector includes an upper connecting sleeve 18, a lower...

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Abstract

The invention discloses an electric submersible pump drainage device suitable for coiled tubing well completion, which comprises a cable suspension device connected sequentially from top to bottom, an overflow nipple, a coiled tubing, a coiled tubing connector, a conversion nipple, a downhole motor, In the downhole pump set, the upper end of the overflow nipple is connected with the delivery joint of the suspension device, the coiled tubing is suspended by the coiled tubing suspension device, and the cable suspended by the cable suspension device extends into the coiled tubing and passes through the transition short After the cable sealing joint on the joint, it is configured with the downhole motor and downhole pump set. In the present invention, the electric submersible pump system is powered by the coiled tubing through the cable, and at the same time, it can prevent the friction damage caused by the cable being placed outside the oil pipe; Realize snubbing operation.

Description

technical field [0001] The invention relates to the technical field of downhole electric submersible pump drainage, in particular to an electric submersible pump drainage device adapted to coiled tubing well completion. Background technique [0002] With the further exploitation of gas fields, the formation energy continues to deplete, and the use of electric submersible pumps will eventually become a more suitable production method for high-yield water-gas wells. Since the downhole electric submersible pump drainage system needs to be connected to the ground power supply through a power cable, special tools are required to bind the power cable to the outer circumference of the tubing, so that the conventional snubbing device cannot complete the tubing under pressure, and it must be controlled by killing the well. After the wellbore pressure is lowered into the electric submersible pump drainage system, another inherent disadvantage of this process is that the cable is easil...

Claims

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Application Information

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IPC IPC(8): E21B43/00F04B47/06
CPCE21B43/128F04B47/06
Inventor 王大江陈建达高东伟孙志扬罗东春徐冠军费成俊喻建川刘军李婷
Owner CHINA PETROLEUM & CHEM CORP
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