METHOD AND MEAN FOR MEASURING THE CONDUCTIVITY OF GEOLOGICAL FORMATIONS AROUND A WELL

摘要

the device consists of a 2130094 9414087 pctabs00166 coil transceiver (5) mobile in the shaft and means (8) for generating a periodic signal in the excitation coil by issuersrice receiving a power surge.the change of factor of the coil is determined by the voltage measuring means (9) and (10) are analyzed by means of processing so as to obtain an indication of the value of the secondctivity of the formation around the well.