Magnetic coupling energy-carrying reverse communication method for underground measurement while drilling

Abstract

The invention belongs to the technical field of drilling engineering, and particularly relates to a magnetic coupling energy-carrying reverse communication method for underground measurement while drilling, which is characterized by comprising the following steps of: 1, driving a drill bit to rotate by a generator short section; 2, expoloring measurement signals of a geological parameter sensor and sending the signals to the main control circuit short section through a wireless magnetic coupling communication and energy carrying device; The engineering parameter sensor transmits a measurementsignal to the wireless receiving short section through the wireless magnetic coupling communication device; And step 3, enabling the wireless receiving short section to carry out signal amplification,filter and perform demodulation processing and upload the processed signals to a ground system. Electromagnetic induction principle is utilized;, Wireless non-contact communication is achieved in a wireless magnetic coupling communication mode, the wireless magnetic communication process is superposed, synchronous transmission of electric energy and information of a common coupling mechanism is achieved, the problems that a communication carrier is prone to structural damage, poor in reliability, short in service life and the like due to underground high temperature, strong corrosion and sealing requirements are solved, and the data transmission reliability is improved.

Description

technical field [0001] The invention belongs to the technical field of drilling engineering, and in particular relates to a magnetic coupling energy-carrying reverse communication method for downhole measurement while drilling. Background technique [0002] In the process of oil drilling, real-time measurement and uploading of downhole information by using downhole measurement instruments while drilling can improve the engineering control ability and formation evaluation ability of extended-reach wells and difficult horizontal wells, improve the drilling rate of oil layers, and provide support for drilling engineering construction. Provide strong protection. Downhole measurement while drilling instruments are usually composed of various short joints that are sleeved in drill collars in series. The sub-section is embedded with engineering parameter measurement sensors, mud pulse generators, generators, drive circuits and other functional components, which can achieve the pur...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to propose a magnetic coupling energy-carrying reverse communication method suitable for the actual needs of downhole measurement while drilling. This method avoids the fragile structure of cables and connectors, poor reliability of data transmission, and The problem of high manual repair and maintenance costs has realized wireless non-contact communication of measurement signals and power transmission

Images