Research on the Application of Relay Type Electromagnetic Wave Transmission Technology with Drilling
Aiming at the problems of large signal attenuation,short propagation distance,low signal frequency and slow transmission rate of wireless electromagnetic wave transmission technology while drilling,this paper designs a relay electromagnetic wave transmission technology while drilling based on quasi-Transverse Electromagnetic Wave(TEM)excitation mode.In this technology,the drill pipe is used as the transmission carrier,and the electromagnetic wave transmission model while drilling in the well is compared with the coaxial transmission model.By using multiple carrier frequencies,the transmission rate is improved and the transmission distance is extended by using relay.This technology has passed the field verification in different formation environments,and it is an important direction for the future development of underground data transmission.
logging with drillingelectromagnetic transmissionrelay
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