一种用于近钻头测量仪的无线短传系统设计∗

摘要

针对随钻测井中心研制的近钻头测量仪，设计了一套无线短传系统。该系统分为上下两部分，分别置于螺杆钻具的两端，采用环形变压器进行信号的双向通信，同一个变压器既做为发射变压器，也做为接收变压器。设计的系统能够适应地层变化带来的信号衰减，较好地完成近钻头测量中无线短传的任务。%A set of wireless communication system was designed aiming at the measuring instrument near the bit, which was developed by the logging research center. The system is divided into two parts, which are placed at the two ends of the screw drill, and the signal is transmit-ted by the ring transformer, and the transformer is used as both the transmitter and the receiver. The design of this system is able to adapt formation change of signal attenuation, and can better finish task of the near bit measurement and wireless communication.