Control device for underground layered flow rate of water injection well

Abstract

The invention discloses a control device for the underground layered flow rate of a water injection well. The lower end of a tubular controller main body is provided with an executing mechanism, a flow passing passage and a cable are penetrated inside the tubular controller main body, the tubular controller main body is connected with a flow rate meter and a test control unit, the executing mechanism is connected with an electric adjustable water nozzle, a liquid inlet connected with the electric adjustable water nozzle is arranged in the flow passing passage, a liquid outlet connected with the electric adjustable water nozzle is arranged on the tubular controller main body, the flow rate meter and the executing mechanism are respectively and electrically connected with the test control unit, the flow rate meter obtains the layered water quantity in real time and transmits the results to the test control unit, when the layered water quantity is not in the preset water quantity range, the test control unit sends control signals to the executing mechanism, and the executing mechanism receives the control signals and regulates the water inlet quantity or the water outlet quantity of the electric adjustable water nozzle. The real-time monitoring on the underground parameters of the water injection well is realized, in addition, the injection quantity is regulated through the executing mechanism, the control device realizes the checking and sealing on a packer through the installation of a checking and sealing pressure meter, and the remote operation and control function is realized.

Description

technical field [0001] The invention relates to downhole layered water injection in an oil field, in particular to a control device for downhole layered flow rate of a water injection well. Background technique [0002] In the heterogeneous oilfields developed by water injection, it is an extremely important task to adjust the downhole layer flow rate of water injection wells, that is, to monitor and adjust the layer injection rate according to the injection allocation requirements. [0003] At present, the existing layered deployment technology is completed by using special equipment for running steel wires or cables. The success rate of steel wire and cable operations is affected by the well deviation. The success rate is low; when the well inclination is greater than 60 degrees, the concentric throwing and fishing process is very difficult to connect, which cannot meet the deployment requirements of highly inclined wells and horizontal wells; the flow control devices are ...

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Problems solved by technology

[0003] At present, the existing layered deployment technology is completed by using special equipment for running steel wires or cables. The success rate of steel wire and cable operations is affected by the well deviation. The success rate is low; when the well inclination is greater than 60 degrees, the concentric throwing and fishing process is very difficult to connect, which cannot meet the deployment requirements of highly inclined wells and horizontal wells; the flow control devices are purely mechanical structures, and when replacing the nozzle, it is necessary to The faucet is fished out, replaced and then put into the downhole water distributor, which increases the complexity of the replacement and cannot be applied to highly inclined wells and horizontal wells

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