致密油储层水平井压后产能预测研究

发布时间：2019-06-04 16:15

【摘要】：对于致密油储层水平井压后产能预测,大多基于达西渗流建立产能预测模型,得到相应的产能解析公式,但利用测井资料来预测该类储层压后产能的方法还不甚成熟。本文利用压裂段内各小层长度、孔隙度、含水饱和度和层厚建立近井产能指数,同时基于每米加砂量表征储层的改造程度,综合近井产能指数和每米加砂量得到综合产能指数,综合产能指数相较近井产能指数与示踪剂跟踪监测的各段产能吻合更好。同时对比稳态条件下解析公式计算的产能与综合产能指数计算产能之间的差异,结果表明,综合产能指数考虑了近井储层因素和储层改造程度,更接近实际产能,对测井工作者进行该类储层压后产能评价具有一定的参考价值。
[Abstract]:For productivity prediction of tight oil reservoir after horizontal well pressure, most of them are based on Darcy seepage to establish productivity prediction model, and the corresponding productivity analysis formula is obtained, but the method of using logging data to predict post-pressure productivity of this kind of reservoir is not very mature. In this paper, the near well productivity index is established by using the length, porosity, water saturation and layer thickness of each layer in the fracturing section. At the same time, the reservoir transformation degree is characterized by adding sand per meter, and the comprehensive productivity index is obtained by combining the near well productivity index and the sand content per meter. Compared with the near well productivity index, the comprehensive productivity index coincides better with the productivity of each section monitored by tracer. At the same time, the difference between the productivity calculated by the analytical formula and the productivity calculated by the comprehensive productivity index under steady-state conditions is compared. the results show that the comprehensive productivity index takes into account the factors of near-well reservoir and the degree of reservoir transformation, which is closer to the actual productivity. It has certain reference value for logging workers to evaluate the productivity of this kind of reservoir after pressure.
【作者单位】：中国石油大学地球科学与技术学院;大庆钻探工程公司测井公司;
【基金】：国家自然科学基金(41374124) 青年科学基金(41704113)资助
【分类号】：TE328

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