Distributed casing corrosion real-time monitoring system

Abstract

The invention discloses a distributed real-time monitoring system for casing corrosion. The distributed real-time monitoring system comprises a shaft casing located underground; the transmitting loop device is mounted on the ground above the shaft casing and serves as a transmitting source to transmit a primary magnetic field; the probe is arranged on the steel cable and is used for receiving a secondary magnetic field response signal generated by the shaft casing; the steel cable is used for fixing the probe; the winch is used for lowering and recovering the steel cable; the data transmission line is arranged on the steel cable and is used for transmitting the secondary magnetic field response signal received by the probe; and the receiver is mounted on the ground, is positioned near the transmitting loop device, and is used for processing and gathering the secondary magnetic field response signals received by the data transmission line into a secondary electromagnetic response curve. The distributed casing corrosion real-time monitoring system provided by the invention can realize monitoring of casing corrosion based on a ground-well transient electromagnetic method, has the advantages of high efficiency, real-time performance, high accuracy and the like, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of casing corrosion monitoring, in particular to a distributed casing corrosion real-time monitoring system. Background technique [0002] In recent years, with the continuous improvement of the economic level, the global demand for petroleum energy has continued to increase. In order to meet the huge market demand, some oil and gas fields with severe corrosive environments have also been put into development. The phenomenon of damage is becoming more and more obvious, and the number of damages is increasing year by year, which leads to the scrapping and shutdown of oil and gas wells, affects the efficiency of oil and gas field production in the later stage, causes huge losses in manpower, material resources and property, and seriously restricts the development of oil and gas fields and the improvement of development benefits. Corrosion is the main cause of casing loss, and it is also a key factor affecting ...

AI Technical Summary

Problems solved by technology

However, the traditional monitoring method (on-site hanging piece) has a long period, low efficiency, and large limitations, which can no longer meet the growing demand for corrosion monitoring. Therefore, it is necessary to develop new corrosion monitoring technologies.

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