Development of a New High Temperature Passive Drilling Magnetic Guidance System

Abstract

With the increasingly severe geological environment for drilling, magnetic guidance technology that can accurately measure the trajectory of rescue Wells is more important. In order to ensure sufficient measurement accuracy and increase the operating temperature range of the equipment, a drilling magnetic guidance system prototype with wider operating temperature range was developed, and the measurement repeatability test and ground simulation experiment were carried out on the prototype. Repeatability experiment results show that the data repeatability is good; The surface experiment results show that the maximum error is <3% when the well inclination is between 10° and 50°, the distance measurement error is <7% and the Angle error is <5° when the distance is 10m, and the measurement error is <3.5% and the Angle error is <2° when the distance is 5m. The developed drilling magnetic guidance system has a wider operating temperature and a wider application range, and its accuracy meets the requirements of field use. It can be used for guiding rescue Wells. The research results provide a reference for the research of magnetic guidance technology in rescue Wells.