【摘要】 目前我国许多老油田相继进入高含水后期开采。由于长期水洗,储层微观特征发生了很大变化。以双河油田核三段油藏为例,充分利用大量的对子井资料,较深入地对比分析了长期水洗前后储层微观特征的变化规律。研究表明,经过长期水洗,双河油田核三段储层填隙物发生破碎和迁移,含量明显减少,微观孔隙结构总体变好,但因储层岩性、原始物性、井别的不同,其具体变化规律有所不同。更多还原

【Abstract】 Now the old oilfields of our country enter the stages of a high water cut. The variation of the micro-geological features result in a serious heterogeneity of the reservoir and a increasingly difficulty for development.The conventional measure to stabilize oil production and control water cut is confronted with a big challenge.According to literature,there is little research on the variation law of the micro-geological features of the reservoir.The paper takes He 3 reservoir in Shuanghe oilfield as an example to correlate and analyze the variation law of the micro-geological features of the reservoir before and after a long term flooding by using a large number of correlative well data. According to the research, the clay minerals of He 3 reservoir of Shuanghe oilfield reservoir crash and move,the contents decrease dramatically, micro-structure has been improved.As the difference of the lithology,original storage capability of the reservoir and the kind of the wells, the concrete variation law of the micro-geological features is different. The validity of the conclusion has proved by oilfield.更多还原