低阻油层水平井比采油指数预测方法及应用

针对渤海低阻油层测井渗透率校正比采油指数精度不高,水平井实际产能与初始方案的产能差异较大的问题。根据测井学基本理论,建立了比采油指数与测井中主要参数的相关式,利用A油田低阻油层水平井的实际生产数据,经过非线性回归,得到利用泥质含量和电阻率校正水平井比采油指数的新方法。研究结果表明:该成果计算水平井产能与实际产能误差-10%~9.7%。研究成果对低阻油层水平井的产能预测具有指导意义。

PREDICTION METHOD AND APPLICATION OF SPECIFIC PRODUCTION INDEX OF HORIZONTAL WELL IN LOW RESISTIVITY OIL RESERVOIR

For the low resistivity reservoir in Bohai,the accuracy of permeability calibration is not high,and the actual productivity of horizontal well is different from that of the initial plan.According to the basic theory of well logging,the correlation between the specific oil recovery index and the main parameters of well logging is established.By using the actual production data of horizontal well in low resistivity reservoir of A oilfield,through nonlinear regression,a new method of correcting the specific oil recovery index of horizontal well by using clay content and resistivity is obtained.The results show that the error between the calculated horizontal well productivity and the actual productivity is-10~9.7%.The research results have significance guide for the productivity prediction of horizontal well in low resistivity reservoir.