Automatic switching control system for finding underground water blockage based on RF (Radio Frequency) wireless communication

Abstract

The invention relates to an automatic switching control system for finding underground water blockage based on RF (Radio Frequency) wireless communication, which comprises a computer with a URAT (Universal Asynchronous Receiver / Transmitter) serial port line and an ICD2 (Interface Control Document) compiler, an RF transmission module, an RF receiving module, a valve control circuit board and a plurality of water distributers arranged underground, wherein the computer is connected with the RF transmission module by the URAT serial port line; the computer is connected with the valve control circuit board by the ICD2 compiler; the RF receiving module and the valve control circuit board are connected by a lead and are arranged on the water distributers; and the RF transmission module is connected by a traction rope, is arranged in an oil well pipeline, and carry out mutual wireless communication with the RF receiving module in each water distributer within a 300-meter range. The automatic switching control system is simple in structure; and water distributers are installed compactly and are conveniently connected with a standard oil pipe. The effective communication distance of the automatic switching control system is 300m so as to effectively improve the communication stability and the system reliability.

Description

technical field [0001] The present invention relates to the technical field of oil exploitation equipment, oil recovery by oil layers and related water search and water blocking construction, and in particular relates to an automatic switch control system for underground water search and blockage based on RF wireless communication. Background technique [0002] The high water content of crude oil not only increases the load on equipment in the process of storage, transportation and refining, but also increases fuel consumption, and even causes scaling or corrosion of equipment and pipelines due to salt in water. Therefore, it is necessary to reduce the water content of crude oil as much as possible. In the late stage of oil production well production, oil recovery in separate layers and related water search and water plugging construction are one of the important measures to reduce the water content of crude oil. In oil production by oil layer and related water search and w...

AI Technical Summary

Problems solved by technology

Optical fiber sensing technology has a long communication distance and strong anti-interference ability. However, due to the high brittleness of the optical fiber, especially when the downhole tools are frequently operated and the vibration is relatively large during construction, it is easy to cause the optical fiber to break. In addition, when the optical fiber passes through the packer, it is necessary to Additional optical fiber protection devices make the mechanical structure more complex and costly

Using cables or hydraulic lines to control downhole tools has cumbersome operations and complicated mechanical structures. When controlling oil wells with more than 3 oil layers, the installation is complicated, the reliability is low, and the control is difficult.

The pressure coding technology can basically realize the transmission of information between the surface and the downhole. The pressure code is injected by the surface water pump to send instructions to the valve control circuit board to control the valve. The water pressure is not stable, which makes the control difficult and the success rate is low

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