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葡I1-4油层聚驱后加密井网开展三元复合驱油现场试验,结合33口井新钻井测井、4口井壁取芯井、邻近井区密闭取芯井解释结果,数值模拟结果,聚驱动态开发效果及新投产井动态,对聚驱后葡I1-4油层剩余油分布规律进行研究,并取得以下认识:聚驱后剩余油少且分布零散;平面剩余油分布在注采分流线附近;纵向上剩余油分布在薄差层、厚油层顶部及夹层发育变差部位。提出建议,聚驱后开展三元复合驱前应将剖面调整作为首要任务。
Portuguese I1-4 oilfield after the polymer flooding encryption wells to carry out the ASP flooding field test, combined with 33 new well logging, 4 core coring wells, adjacent well core coring interpretation results, numerical simulation results , Dynamic development of poly-flooding and dynamic of new production well, the distribution of remaining oil in poly-flooding post-gravel I1-4 reservoir is studied, and the following findings are obtained: remaining oil is little and scattered after poly-flooding; Near the shunting line; and the remaining oil in the longitudinal direction is distributed on the top of the thin difference layer, the top of the thick oil layer and the development of the mezzanine. Put forward suggestions, cross-section adjustment should be taken as the most important task before carrying out ASP flooding after the polymer flooding.