特低渗透油藏水平井开发效果评价指标和分类评价方法

发布时间：2019-04-22 09:02

【摘要】：针对特低渗油藏水平井开发特点,引入注水见效周期、水平段产液率新的评价指标,确定了水平井网注水开发效果的9个评价指标。基于直井与水平井开发的动态差异性以及特低渗油藏与常规油藏开发的不同点,采用类比分析、水平井等效评价、虚拟开发等综合方法,初步给出了鄂尔多斯盆地特低渗透油藏水平井开发分类评价指标。考虑各因素之间的等价、因果、过程等关系,根据层次分析法,确定了评价指标的权重关系。采用模糊数学法,构建了水平井开发的综合评价体系。实际油田应用效果表明新体系评价结果可靠。
[Abstract]:According to the development characteristics of horizontal wells in ultra-low permeability reservoir, a new evaluation index of water injection effect period and liquid production rate in horizontal section is introduced, and nine evaluation indexes of horizontal well pattern water injection development effect are determined. Based on the dynamic difference between vertical well and horizontal well and the difference between ultra-low permeability reservoir and conventional reservoir, the comprehensive methods, such as analogy analysis, horizontal well equivalent evaluation and virtual development, are adopted. Preliminary evaluation indexes of horizontal well development in ultra-low permeability reservoirs in Ordos Basin are given. Considering the relationship among the factors such as equivalence, cause and effect, process and so on, according to the analytic hierarchy process (AHP), the weight relation of the evaluation index is determined. The comprehensive evaluation system of horizontal well development is constructed by using fuzzy mathematics method. The practical application results show that the evaluation results of the new system are reliable.
【作者单位】：中国石油大学地球科学学院;中国石油大学石油工程教育部重点实验室;中国石油长庆油田分公司勘探开发研究院;低渗透油气田勘探开发国家工程实验室;
【基金】：国家自然科学基金“基于语义的多分辨率储层数据组织与管理”(41472113) 低渗透油气田勘探开发国家工程实验室资助
【分类号】：TE348

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