Downhole wireless flow control valve tool and its system with wireless duplex communication

Abstract

The invention relates to a downhole wireless flow control system and control method with wireless duplex communication. Oil layers are isolated by packers; adjacent packers are provided with downhole wireless flow control devices with wireless duplex communication. The downhole wireless flow control device of Gongtong realizes remote intelligent remote sensing and remote control through pressure pulse transmission and downhole remote telemetry / remote control system. The downhole wireless flow control system with wireless duplex communication of the present invention uses the flow control device to intervene in production or pumping flow through artificial intelligence, thereby realizing the transmission of signals based on fluid pressure, and identifying the flow related to production or pumping flow at the wellhead and downhole The condition changes, and the flow control device is operated according to the condition change, and the opening degree of the regulating valve in the pipe flow in the downhole production tubing is used to send a wireless coded signal in the oil or gas well, which is easy to install, retrieve and maintain, reducing operational risks and production costs .

Description

technical field [0001] The invention relates to an oil drilling and production downhole tool, in particular to a downhole wireless flow control valve tool with wireless duplex communication and its system. Background technique [0002] To optimize recovery, the petroleum industry relies on data collected from wells and reservoirs. This data forms the basis for nearly all decisions in field development and operations, including the location of new wells, maintenance planning and production allocation / control. Given the need for data, many wells are equipped with permanent downhole instruments such as pressure, flow and temperature monitoring devices. [0003] Due to the generally harsh wellbore environment, permanent instruments have a limited service life and often fail. This failure results in limited information from the reservoir and limited ability to control wellbore fluids. This will seriously affect the understanding and modeling of the reservoir and reduce the rec...

AI Technical Summary

Problems solved by technology

[0008] Temporary monitoring systems for steel wire or cable operations require not only downhole equipment and tools, but also special equipment and wellhead tools operated by operators. Approximate production tests or pump injection tests can only be performed in a certain period of time. This kind of temporary operation has high cost and occupies the tubing channel. The test data cannot truly reflect all changes in well production. It is an approximate monitoring method

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