一、套管井电阻率测井技术 初步的理论研究和现场实验表明，当电流加到油田套管上时，一部分微弱电流流入地层，它可通过测量求得。由于电流很小，对测量仪器精度的要求特别高，所以测井解释比裸眼井复杂得多。 套管井电阻率测井使用低频（＜１Ｈｚ）电流，目前仍处在试验阶段 First, the cased hole resistivity logging technology preliminary theoretical studies and field experiments show that when current is added to the casing on the casing, a part of the weak current into the formation, which can be obtained by measuring. Because of the small current, the accuracy of the measuring instruments is particularly high, so log interpretation is much more complex than openhole. Cased-hole resistivity logging uses low-frequency (<1Hz) current and is still in the pilot phase