A comprehensive mud logging system and method for exploratory wells

Abstract

The invention provides a comprehensive exploratory well logging system and method. The system comprises a Fourier transform infrared spectrometer, an upper computer, a lower computer, a wireless transmission system and sensors and instruments for detecting conventional pressure, torque, drilling fluid density, conductivity and other exploratory well platform parameters. Gas logging is carried out at an exploratory well mouth through the Fourier transform infrared spectroscopy, the lower computer collects and analyzes spectrums and also monitors the pressure, torque, drilling fluid density, conductivity and other parameters of the drilling platform, and a result is sent to the upper computer, 50 meters or more away from the well mouth, in a logging room through the wireless data transmission system. A comprehensive logging instrument is simple in circuit, high in analysis speed and convenient to maintain.

Description

【Technical field】 [0001] The invention relates to an information acquisition method and device for oil and gas resources in the process of oil, natural gas, and unconventional oil and gas exploration, and in particular to a comprehensive mud logging method and system in the process of geological exploration wells. 【Background technique】 [0002] Comprehensive mud logging is a comprehensive mud logging technology that integrates geological parameter logging, gas logging, formation pressure, and drilling engineering logging. In oil and gas exploration well operations, this technology uses a variety of sensors and analytical instruments to directly acquire data in real time, such as well depth, pressure, downhole geological structure, lithology, oil and gas content, etc. It has the advantages of timely information acquisition, rich information, and fast analysis and interpretation It has an irreplaceable role in the evaluation of the explored oil or gas wells, or other geologic...

AI Technical Summary

Problems solved by technology

Although some comprehensive mud logging instruments use wireless bus system for data transmission at present, there are the following shortcomings in the exploration site: the electromagnetic fields generated by large generators and motors in the exploration site are very large, which is relatively harmful to wireless data transmission. The more transmission, the higher the possibility of data miscommunication. The control system transmits control parameters and related parameters through the wireless bus system, and the real-time performance cannot be guaranteed, which greatly reduces the reliability of the system.

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