Simulation research on space-ranging vector guidance system of tubular magnetic sources

Xinyu  Dou

doi:10.6180/jase.202506_28(6).0011

Simulation research on space-ranging vector guidance system of tubular magnetic sources

Computer Science and Information Engineering

Xinyu DouThis email address is being protected from spambots. You need JavaScript enabled to view it.

Intelligence and Information Engineering College, Tangshan University

Received: April 21, 2024
Accepted: July 25, 2024
Publication Date: September 11, 2024

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202506_28(6).0011

There is a huge gap between domestic and foreign technology in measurement while drilling (MWD) field, especially in the aspect of MWD of magnetic properties; domestic technology is still lacking in systematic research. Taking the measurement of the magnetic properties of bottom hole assembly (BHA) as the main line, on the one hand, the magnetic field distribution law of built-in BHA magnetic sub in rock stratum is studied; on the other hand, the theoretical research and preliminary design of the magnetic field vector measurement guidance system are carried out for monitoring the space distance between the drilling well and drilled well. Firstly, the three-dimensional space magnetic field law model of tubular magnetic sub of BHA is established by applying the basic theory of the spatial magnetic field law of permanent magnets, and on the basis of this model, the calculation formula of the three-dimensional space magnetic field law of tubular magnetic sub is deduced. Secondly, the magnetic field law of tubular magnetic sub in rock stratum is studied by using the derived formula, and the calculation rules are summarized by combining graphic calculation and numerical calculation. Finally, the calculation rules are applied to calculate separately the adjacent wells distance of the coalbed methane (CBM) connected well and heavy oil double horizontal well, the core algorithm of the magnetic field vector measurement guidance system is obtained, and the calculation rules of the vector distance are verified and analyzed. This method can avoid the complex calculation of permeability and accurately calculate the vector distance between adjacent wells. Meanwhile, this method can be used to guide the research of tubular magnetic sub, magnetic field measurement systems, and the operation of measurement tools.

Keywords: three-dimensional magnetic field mode; magnetic field intensity; tubular magnet; vector distance; calculation formulas

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