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Nonmetal composite continuous tube and electrical submersible pump system

A technology of submersible electric pump and coiled tubing, which is applied in the direction of production fluid, wellbore/well components, earthwork drilling and production, etc. It can solve the problems that the viscosity of the produced fluid cannot be reduced, and achieve low viscosity, simple operation process and flexibility Good results

Active Publication Date: 2014-08-13
山东高原油气装备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned defects, the present invention provides a non-metallic composite continuous pipe with simple structure, convenient use and low cost, and simultaneously provides a submersible electric pump system used in conjunction with it. The implementation of the present invention can reduce the complexity of the pump operation. At the same time, it solves the defects that the heat of the current cable cannot reduce the viscosity of the production fluid and prevent the wax deposition on the pipe wall

Method used

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  • Nonmetal composite continuous tube and electrical submersible pump system
  • Nonmetal composite continuous tube and electrical submersible pump system
  • Nonmetal composite continuous tube and electrical submersible pump system

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Embodiment Construction

[0029] Attached below Figure 1-12 An embodiment of the present invention is described.

[0030] A non-metallic composite coiled tubing electric submersible pump system is composed of a nonmetallic composite coiled tubing 5, a special wellhead device 1, a downhole unit 7, a special connector 6, a surface cable 2, a junction box 3, and a control cabinet 4.

[0031] The core of the non-metallic composite coiled tubing 5 is circular, and is used to transport the production fluid of the downhole unit; the pipe wall from the inside to the outside is the inner pipe 9, the inner steel wire mesh 10, the embedded layer 11, and the outer steel wire mesh 12 , protective layer 13. Two steel ropes 14 symmetrically arranged are embedded in the embedding layer 11, and the direction of rotation of the two steel ropes is opposite, such as: the twist of one steel rope is left-handed, and the twist of the other steel rope is right-handed; There are four cables arranged on both sides of the ste...

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Abstract

The invention relates to special oil extraction equipment for oilfields, in particular to a nonmetal composite continuous tube and an electrical submersible pump system. The technical scheme of the nonmetal composite continuous tube includes that a cable is embedded in the wall of the nonmetal tube, the wall of the nonmetal tube successively consists of an inner tube (9), an inner-layer steel wire mesh (10), an embedding layer (11), an outer-layer steel wire mesh (12), a protecting layer and the like from inside to outside, and the cable is located in the embedding layer (11). The electrical submersible pump system comprises the nonmetal composite continuous tube, and mainly consists of the nonmetal composite continuous tube, a wellhead device and an underground unit. Due to application of the nonmetal composite continuous tube and the electrical submersible pump system, complexity degree of pump descending and ascending operation can be reduced, and viscosity of produced liquid can be reduced and wax precipitation of the wall of the tube can be prevented by the aid of heat of the cable.

Description

technical field [0001] The invention relates to a special oil recovery equipment for an oil field, in particular to a non-metal composite coiled tube and a submersible electric pump system. Background technique [0002] In the current electric submersible pump system, the armored cable is used as a channel for transmitting power and electronic signals, and the coupling-type metal tubing is used as a channel for transporting underground production fluid. The two are clamped together with cable clips in the casing. When the pump is lowered, a single oil pipe is connected and lowered. At the same time, the cable coiled on the drum needs to be released at an appropriate speed, and cable clips are installed at intervals; Coil the cable around the drum. Above-mentioned procedure is numerous and diverse, and labor intensity is big. During the operation, the cables are often twisted and confused, causing scratches, extrusion, bumps, etc. The heat of the armored cable is dissipate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00
Inventor 李培江孙殿新朱新忠李思涛
Owner 山东高原油气装备有限公司
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