Underground flow control valve based on fiber bragg grating sensing detection

A technology of flow control valve and optical fiber grating, which is applied in the direction of wellbore/well valve device, wellbore/well parts, earthwork drilling and production, etc., to achieve the effect of reducing driving force, good repeatability, and strong anti-interference ability

Inactive Publication Date: 2012-03-21
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the mining control process, stratified mining has basically been realized, but the precise control of the flow is restricted by the working environment, and there are still problems

Method used

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  • Underground flow control valve based on fiber bragg grating sensing detection
  • Underground flow control valve based on fiber bragg grating sensing detection
  • Underground flow control valve based on fiber bragg grating sensing detection

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] The present invention provides a downhole flow control valve based on fiber Bragg grating sensing detection, and its overall structure schematic diagram is as follows figure 1 Shown: It mainly includes computer control system, power supply, motor drive system 1, actuator and fiber grating detection system, motor drive mechanism, actuator and fiber Bragg grating detection mechanism to form a flow control valve 2, wherein the computer control system on the ground and the fiber grating detection system form a flow control valve 2. The downhole signal line (electrical cable and optical cable) is connected, and the downhole signal line is put downhole along with the casing 4, and the packer 3 acts between the casing 4 and the tubing 5, and its function is to isolate each oil layer. The cable between the packers is used for the motor drive system 1, and the ...

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Abstract

The invention relates to an underground flow control valve based on fiber bragg grating sensing detection. The underground flow control valve comprises a computer control system, a power supply, a motor driving system, an execution mechanism and a fiber bragg grating detection system, wherein the motor driving mechanism, the execution mechanism and the fiber bragg grating detection mechanism form a flow control valve; the computer control system is connected with the power supply; the power supply is connected with the execution mechanism through the motor driving system; and the execution mechanism is connected with the fiber bragg grating system. The underground flow control valve based on fiber bragg grating sensing detection provided by the invention has strong antijamming capacity, adopts an absolutely real-time measuring method, has a self-correction function, enables a good repeatability of the measurement result, and reduces the driving force of the driving system.

Description

technical field [0001] The invention relates to the technical field of energy mining equipment, in particular to an underground flow control valve based on optical fiber grating sensing and detection. Background technique [0002] With the development of domestic oil and gas exploration technology, many oilfields have entered the late stage of high water cut, and more and more oil reservoirs and oil and gas fields with complex reservoirs have emerged. Conventional well completion methods can no longer meet the requirements of these wells. Therefore, as a new technology, intelligent well completion has received more and more attention. Intelligent well completion introduces a monitoring and control system downhole. It can not only realize the simultaneous exploitation of multiple layers, but also exploit a certain layer independently. It has the ability to collect, transmit and analyze wellbore production data, reservoir data and whole well production chain data. , to improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/16
Inventor 刘明尧谭跃刚李程李俊
Owner WUHAN UNIV OF TECH
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