介电测井资料校正方法及油水层的定性识别

Dielectric Logging Data Correction and Its Qualitative Evaluation of Oil/Water Bed.

介电测井所测量的是地层中传播的电磁波的衰减和相位移 ,并由此计算出地层的介电常数和电导率。电磁波在地层中的传播效应受到地层电导率、介电常数及电磁波频率的共同影响。根据这些影响因素提出了一种针对阿特拉斯 47MHz介电测井仪的测井资料校正方法 ,并应用常规声波曲线与介电常数重叠的方法有效地定性识别油水层。

Dielectric logging measures the attenuation and phase shift of electromagnetic wave propagated in formation. Based on the measured data dielectric constant and conductivity of the formation can be derived. According to the fact that the propagation effect of the electromagnetic wave is affected by the conductivity and dielectric constant of the formation and electromagnetic wave frequency, a correction method for log data from Atlas 47 MHz dielectric logging tool is proposed. By using the overlay of conventional acoustic log and dielectric constant curve oil/water bed can be identified qualitatively.