阵列感应侵入因子法与声波-电阻率交会图相结合识别镇北地区延安组低阻油层

Identification of low-resistivity oil reservoirs of Yan'an Formation in Zhenbei area by combining array induction invasive factor method with interval transit time-resistivity cross-plot

针对鄂尔多斯盆地镇北地区延安组非均质性强、电阻率低、油水层识别难度大的特点,利用阵列感应测井(MIT)侵入因子法与声波-电阻率交会图相结合的解释方法,建立了镇北地区延安组低阻油层解释参数限定值,实现该解释层段低阻油层的准确识别,通过与多口井试油数据对比,验证了该识别方法的有效性。

In view of the characteristics of strong heterogeneity,low resistivity and oil and water layers very difficult to identify of Yan'an Formation in Zhenbei area of Ordos Basin,the thresholds of interpretation parameters of the Yan'an Formation are established by combining array induction invasive factor method with interval transit time- resistivity cross-plot,by which low-resistivity oil reservoirs of the Yanan Formation can be accurately judged. The effectiveness of this low-resistivity oil reservoir identification method is verified by oil testing data of several wells.