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正确认识注水后储层物性的变化规律对油田开发方案的制定和调整有着重要的意义。文中对冀东高尚堡油田沙三段2+3亚段(Es32+3)储层特征展开研究,通过对重点井样品注水前后孔隙结构、储层物性、储层非均质性的分析对比,指出注水后储层物性普遍变好,但本身物性较好的储层物性改善程度更高。这一特征也导致了注水后研究区储层非均质性更为严重,一般注水后储层非均质性由中等非均质性上升至强非均质性。针对注水前后储层物性的变化规律,提出了初步的开发建议。
Correctly understanding the change law of reservoir physical property after waterflooding is of great significance to the formulation and adjustment of oilfield development plan. In this paper, the reservoir characteristics of Es3 + 3 reservoir in Es3 of Gaoshangpu Oilfield of Jidong Oilfield are studied. Through the analysis and comparison of pore structure, reservoir physical properties and reservoir heterogeneity before and after water injection into key well samples, It is pointed out that the physical properties of reservoirs generally get better after water injection, but the reservoir physical properties with better physical properties are more improved. This feature also leads to more serious reservoir heterogeneity in the study area after water flooding. Generally, reservoir heterogeneity increases from moderate heterogeneity to strong heterogeneity after water injection. In view of the variation of reservoir physical properties before and after water injection, some preliminary development suggestions are put forward.