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A kind of non-metallic flexible composite continuous pipe

A coiled tubing and non-metal technology, applied in the field of non-metal flexible composite coiled tubing, can solve the problems of high working intensity of personnel, easy corrosion of metal oil pipes, large construction workload, etc. Strong corrosiveness and the effect of solving corrosion problems

Active Publication Date: 2017-08-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problems of large construction workload, high labor intensity, long construction period and easy corrosion of metal oil pipes in the existing downhole oil recovery device

Method used

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  • A kind of non-metallic flexible composite continuous pipe
  • A kind of non-metallic flexible composite continuous pipe

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In order to overcome the problems of large construction workload, high labor intensity, long construction period and easy corrosion of metal oil pipes in the existing downhole oil production equipment, this embodiment provides a method such as figure 1 The non-metallic flexible composite continuous pipe shown includes a protective layer 1, a reinforcing layer 2, a tensile layer 3, and a steel wire rope 4; the protective layer 1, the reinforcing layer 2 and the tensile layer 3 are sequentially arranged from outside to inside, and the The steel wire ropes 4 are distributed around the outside of the reinforcement layer 2 .

[0026] Wherein, the material of the protective layer 1 is rubber, which is extruded and coated on the outside of the reinforcing layer 2. It is the outermost shield of the composite continuous tube, which comprehensively protects all components inside the tube, and has good wear resistance and durability. corrosive.

[0027] The material of the reinfo...

Embodiment 2

[0033] On the basis of Embodiment 1, this embodiment provides an electric submersible reciprocating pump oil recovery device using the non-metallic flexible composite coiled tubing of the present invention, such as figure 2 As shown, the device is composed of a frequency conversion control cabinet 5, a wellhead hanger 6, a non-metallic flexible composite continuous pipe 7, a conversion joint 8, an inverted pull-down pump 9, a linear motor 10, and a power cable 11; the frequency conversion control cabinet 5 and the power cable 11 The wellhead hanger 6 and the non-metallic flexible composite coiled tubing 7 are processed and connected by vulcanization, the non-metallic flexible composite coiled tubing 7 and the conversion joint 8 are processed and connected by vulcanization, and the conversion joint 8 is connected with the inverted pull-down pump 9 through pipe threads Connection, the inverted pull-down pump 9 is connected with the linear motor 10 through a pipe thread, and the ...

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Abstract

The invention belongs to the technical field of mechanical oil extraction, and in particular provides a metalloid flexible composite continuous pipe. The pipe comprises a protective layer, a reinforcing layer, a pull resistant layer and steel wire ropes, wherein the protective layer, the reinforcing layer and the pull resistant layer are successively arranged from outer to inner, and the steel wire ropes are distributed around the outside of the reinforcing layer. The metalloid flexible composite continuous pipe disclosed by the invention has the characteristics that the flexibility of plastic materials is good, the corrosion resistance is strong, the heat conductivity coefficient is low, the metalloid flexible composite continuous pipe can make up insufficiencies of a metal continuous oil pipe and achieve most of properties of the continuous oil pipe, and the application range of the continuous oil pipe is extended; in addition, the metalloid flexible composite continuous pipe can be connected and processed and meet the strength requirements of resisting pull and resisting internal pressure, the pipe can be continuously placed under the ground and taken out during operation, and the operation workload and the labor intensity of staff can be substantially reduced.

Description

technical field [0001] The invention belongs to the technical field of mechanical oil recovery, and in particular relates to a non-metallic flexible composite continuous pipe. Background technique [0002] At present, the underground oil recovery device mainly uses metal oil pipes as channels to transport liquid to the ground. However, metal oil pipes need a single connection during operation, which requires a large amount of construction work, high labor intensity, and a long construction period; When the oil pipe is working in the downhole, it is easily corroded by the downhole fluid, and the service time will be shortened accordingly. [0003] At present, some flexible composite pipe patents have been published in China to overcome the above-mentioned shortcomings of metal pipes. For example, Chinese patent CN202176838U discloses a non-metallic flexible composite high-pressure delivery pipe for the oil and gas industry, including a nylon core whose outer wall is coated wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/20
CPCE21B17/20
Inventor 刘天宇李明甘庆明曾亚勤黄伟辛宏韩二涛张磊杨海涛
Owner PETROCHINA CO LTD