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采用水驱、蒸汽驱和化学驱驱油过程中常造成油藏流体组分的变化,而现有的井间电磁测井技术虽然可以测量注入流体引起的井间电阻率变化,但其测量范围限于井间区域。为此,Backer Hughes公司正在研发一种新型井眼油藏监测技术——瞬变电磁测量系统(TEM)。该系统可以测量不同区域地层的电阻率,优于现有井间电磁技术采用的连续波测量方法。由发射线圈和接收线圈组成。测量时,给发射线圈通足够长时间的直流电(直至通电造成的瞬态
However, the existing cross-well electromagnetic logging technology can measure the variation of resistivity between wells caused by fluid injection, but its measuring range is limited to Intersection area. To this end, Backer Hughes Company is developing a new wellbore reservoir monitoring technology - transient electromagnetic measurement system (TEM). The system can measure the resistivity of strata in different regions and is superior to the continuous wave measurement method used in existing crosswell electromagnetic technology. By the transmitting coil and receiving coil. During measurement, the transmitting coil is energized for a sufficient amount of time (until transient due to energization