Study And Design Of Distrbuted Borehole-to-surface Electrical Survey Instrument Receiver

Borehole-to-surface electrical imaging technique is a valuable method in the research of infused water distributing and residual petroleum exploitation, and it has got more and more applications. In China, the estimation of infused water efficiency and the research of residual petroleum exploitation have been paid more attention, and also will be one of the key technologies in petroleum exploitation. The Borehole-to-surface electrical survey instrument is comprised of the transmitter and the receiver. The main parameters of the receiver which is one of the key parts of the instrument can affect geophysical exploration and work efficiency of the entire instrument. The thesis studied and designed the distributed borehole-to-surface electrical instrument receiver to meet the need of high precision and muti-channels synchronous sampling in Borehole-to-surface electrical survey technique.The incepting system includes receiver, net bus and host computer. The receiver answered for surveying artificial electric-field voltage of the surface. The Network took charge of reliably communicating between receiver and host. The host took charge of receiving and tiding up data which is from the receiver.1. The surveying precision of voltage and transmitting current in receiver will directly affect the reliability of measure work and the systemic precision. Expect for effectual signal, there are 50Hz industrial power disturbance,...