An intelligent drill pipe system based on capacitive coupling

Abstract

The invention provides an intelligent drill rod system based on capacitor coupling. The intelligent drill rod system comprises a front-end signal collector, a regulator, a relay, a signal receiver, drill rod units and connectors. A cable used for signal transmission is arranged in each drill rod unit. The ends, abutting against each other, of every two adjacent drill rod units of the intelligent drill rod system are arranged in the corresponding connector, and a gap is reserved between the ends, abutting against each other, of every two adjacent drill rod units. The ends, abutting against each other, of every two adjacent drill rod units are arranged to be of an annular sheet structure, a capacitor plate electrode is formed in the end face of each annular sheet structure, and a plate electrode capacitor is formed by every two capacitor plate electrodes abutting against each other; and the cable in each drill rod unit is in lap joint with the capacitor plate electrode on the end face of the drill rod unit.

Description

technical field [0001] The invention relates to the technical field of monitoring and control, in particular to an intelligent drill pipe system based on capacitive coupling. Background technique [0002] During oil extraction, no matter it is the anti-deviation drilling of wells, or the drilling process of directional wells and horizontal wells, it is necessary to know the drilling status and formation information in the hole in time. The measurement-while-drilling system can automatically and continuously measure the relevant parameters near the bottom of the well during the drilling process and transmit them to the ground for real-time display, storage, processing and printing by the computer to provide a basis for the next construction design. It is a continuous monitoring of the drilling trajectory and timely correction. essential tool. The measurement-while-drilling system is divided into wired and wireless. Since the cable of the wired measurement system often affect...

AI Technical Summary

Problems solved by technology

At the same time, due to the influence of mud and drilling fluid inside the drill pipe, it will seriously intensify the attenuation of high-frequency electromagnetic waves and reduce the coupling coefficient between coils, making it impossible to achieve long-distance transmission

In addition, most of the existing research models directly ignore the internal resistance of the transmission line. However, the internal resistance of the transmission line cannot be ignored during the transmission process of several kilometers.

[0004] Therefore, there is a need for an intelligent drill pipe system based on capacitive coupling that can effectively prevent the coupling coefficient between coils from being reduced due to the attenuation of high-frequency electromagnetic waves, resulting in the inability to transmit long distances.

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