Control method and device of underground measurement while drilling system

Abstract

Measurement equipment of a measurement while drilling system is powered by an underground mud generator, and aiming at improving the accuracy of underground inclination measurement while drilling, a control method of the underground measurement-while-drilling system comprises the step of single inclination measurement, and power utilization of measurement equipment except for inclination measurement is limited during the inclination measurement. The method is realized mainly by establishing a function module framework through a computer program. During inclination measurement, the power utilization of other measurement equipment is limited, other measurement equipment is enabled to consume no power or consume little power to the greatest extent, then the mud generator cannot output larger current, and the accuracy of the inclination measurement cannot be influenced.

Description

technical field [0001] The invention relates to a downhole measurement while drilling system, and specifically provides its control method, which is mainly realized by establishing a functional module framework through a computer program. Background technique [0002] The measurement-while-drilling system in the petroleum or geological drilling industry has the following two power supply methods. [0003] The first is powered by a lithium battery. With the widespread application of geosteering technology and logging while drilling in the oilfield development process, the limited power supply time and power of lithium batteries can no longer meet the requirements of complex downhole instruments for high-power power supply. In addition, lithium batteries have shortcomings such as insufficient high temperature resistance, poor safety, environmental pollution, and non-reusable use. [0004] The second is to use a mud generator for power supply, which converts the kinetic energ...

AI Technical Summary

Problems solved by technology

Like other measuring equipment, the inclinometer is powered only when the mud flows, but the mud flow will cause the equipment to vibrate and affect the accuracy of the inclinometer

[0005] There are other measurement equipment in the downhole measurement while drilling system. When other measurement equipment uses electricity, the mud generator outputs a large current, and the magnetic interference generated by the current will affect the accuracy of inclination measurement.