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Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof

A skin effect and natural gas technology, applied in the direction of isolation devices, cleaning equipment, drilling equipment, etc., can solve the problems of inability to realize continuous running, increase operation risks, restrictions, etc., achieve fast installation speed, ensure safety, and reduce investment Effect

Inactive Publication Date: 2015-12-23
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For gas-lift wells without power near the wellhead, flowing wells, and oil wells with limited grid load, the application of this method will be limited
At the same time, for the heating of conventional sucker rods or hollow sucker rods, due to the existence of couplings, continuous running cannot be achieved during the running process, which increases the operational risk during installation

Method used

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  • Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof
  • Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof
  • Natural gas power generation electric heating wax removing and preventing device based on skin effect and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A natural gas power generation electric heating wax removal and anti-wax device based on the skin effect, including a natural gas collection part, a natural gas power generation part and an electric heating wax removal and anti-wax device powered by the natural gas power generation part;

[0057] The natural gas collection part is used to collect and separate the natural gas discharged from the wellbore 12;

[0058] The natural gas power generation unit utilizes natural gas to generate electricity.

[0059] The natural gas collection unit includes an oil and gas metering station 15 , a joint processing station 17 and a natural gas purification station 21 which are connected to the wellbore 12 in sequence.

[0060] The natural gas power generation unit includes a connected natural gas generator set 25 and a power frequency electric heating control cabinet 27; the power frequency electric heating control cabinet 27 is used to control the electric heating wax removal and w...

Embodiment 2

[0063] As described in Embodiment 1, a natural gas power generation electric heating wax removal and anti-wax device based on the skin effect, the difference is that the steel armored cable 13 includes a steel armor sheath 28 and an insulating material arranged in sequence from outside to inside layer 29, polytetrafluoroethylene layer 30 and cable core wire 31.

[0064] The steel armor sheath 28 is a continuous seamless steel pipe.

Embodiment 3

[0066] As described in Embodiment 2, a natural gas power generation electric heating wax removal and anti-wax device based on the skin effect, the difference is that the electric heating wax removal and anti-wax device also includes a wellhead high pressure set on the top of the Christmas tree 9 Sealing system: the wellhead high-pressure sealing system includes a pressure cap 3 through which the armored cable 13 passes, a sealing packing 4, a spring 5, a gate 6 and a cable clamping splint 7.

[0067] A hanger 2 is also arranged on the upper part of the pressing cap 3 .

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PUM

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Abstract

The invention discloses a natural gas power generation electric heating wax removing and preventing device based on a skin effect and application thereof. The device comprises a natural gas collecting part, a natural gas power generation part, and an electric heating wax removing and preventing device powered by the natural gas power generation part, wherein the natural gas collecting part is used for collecting and separating natural gas exhausted from a shaft; and the natural gas power generation part uses the natural gas for generating the electricity. A power supply needed for electric heating of a steel-armored cable is from the natural gas power generation part; a gas source needed by the natural gas power generation part can be directly obtained from associated gas produced from an oil well; the associated gas can be used; and the dependence of an electric heating wax removing and preventing technology on a power grid is prevented.

Description

technical field [0001] The invention relates to a natural gas power generation electric heating wax removal and anti-wax device based on the skin effect and an application thereof, belonging to the technical field of oil and gas field development equipment. Background technique [0002] During the oil production process, due to the reduction of formation temperature and pressure and the release of light hydrocarbons in the crude oil, the wax in the crude oil will be precipitated in the form of crystals and adsorbed on the tubing wall. The paraffin deposition in the wellbore will narrow the oil flow channel of the oil well and hinder the flow of crude oil. In severe cases, it may even cause wax stuck in the oil well, affecting the recovery rate of crude oil, and even causing the oil well to stop production. In order to eliminate the impact of oil well wax deposition, it is necessary to regularly shut down the well to remove the wax deposited on the oil well pipe wall, which w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B37/00E21B36/04
CPCE21B36/04E21B17/003E21B33/03E21B37/00E21B41/0085
Inventor 李宾飞张新军
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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