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Condensate oil well reservoir RC electric heating film heating oil extraction system

An electrothermal membrane and oil well technology, which is applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., can solve the problems of high-power heating, etc., and achieve high electrothermal conversion efficiency, long service life, and convenient operation.

Inactive Publication Date: 2015-09-16
PANJIN HONGCHANG IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, the downhole electric heating of oil wells is mainly used to extract heavy oil and high pouring oil wellbore heating, such as: hollow sucker rod thermal cable heating technology, oil casing electromagnetic heating technology, the heating principle of the above electric heating technology is 1000- Uniform heating throughout the 1500m, unable to achieve local high-power heating underground

Method used

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  • Condensate oil well reservoir RC electric heating film heating oil extraction system
  • Condensate oil well reservoir RC electric heating film heating oil extraction system
  • Condensate oil well reservoir RC electric heating film heating oil extraction system

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] Such as figure 1 As shown, the present invention provides a condensate oil well reservoir RC electrothermal film heating oil recovery system, which consists of a power frequency power supply control cabinet 103, a transformer 101, a cable sealer 105, a downhole cable 106, and an RC electrothermal film heater 116. The frequency power supply control cabinet 103 is connected to the transformer 101 through the input cable 102, and the industrial frequency power supply control cabinet is connected to the output cable 104. The output cable is sealed by the cable sealer 105 at the wellhead and connected to the downhole cable 106. The downhole cable is heated with the RC electric heating film. Device 116 is connected.

[0035] A suitable number of cable clamps 107, 108, 109, 110, 111 is used to fix the downhole cable on the outer wall of the tubing 119.

[0...

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Abstract

The invention relates to a technology of relieving near-well zone condensate oil blockage and shaft liquid accumulation, in particular to a condensate oil well reservoir RC electric heating film heating oil extraction system. The condensate oil well reservoir RC electric heating film heating oil extraction system has the characteristic of underground local high-power heating, and has the advantages that a heater adopts a design realizing the flexible power regulation; the electric heating conversion efficiency is high; the service life is long; safety and reliability are realized; the operation is convenient; and the use range is wide. Contaminants blocked in a near-well zone oil flow passage can be relieved, and a shut-down oil well can recover the normal production.

Description

technical field [0001] The invention relates to a technology for removing condensate oil clogging in the near-well zone and wellbore fluid accumulation, in particular to an RC electric heating film heating oil recovery system for condensate oil well reservoirs. Background technique [0002] The Banqiao condensate oil and gas field has entered the middle and late stages of development. At present, the formation pressure is below the dew point pressure. A large amount of condensate is precipitated near the wellbore, causing condensate blockage, reducing the productivity of oil and gas wells, or even shutting down production. Although marginal water injection mining measures have been taken, the effect is not obvious. Moreover, there are many wells where pressure-holding production is not feasible for single-well configurations. At present, most oil and gas wells have been shut down or abandoned. As natural gas and condensate oil are becoming more and more important as light ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24
Inventor 曲景宽王忠全曲直刘超樊志强邢济强樊华张秋菊
Owner PANJIN HONGCHANG IND CO LTD
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