摘要
研究了萨南西部SⅠ ,SⅡ ,SⅢ ,PⅡ 4个非主力油层组 6 9个沉积单元微相及砂体的分布 ,优选一次加密井 ,分析了该区非主力油层的动用状况 ,剩余油的成因及分布 ;油田进入高含水阶段 ,剩余油分布主要受储层非均质的影响 ,表现在不同沉积微相引起了油层非均质 ,造成剩余油在平面上、纵向上的分布差异 ;注采系统不完善是剩余油形成的主要原因 ,此成果为油层挖潜、井网调整提供了地质依据 .
In this paper, according to the study of distribution of sedimentary microfacies and sand bodies of S.P Non-main Pay, 4 development reserviors, 69 sedimentary units, and the selection of intermediate pattern, we analysized the performance, formation and distribution of remaining oil distribution, and concluded that the remaining oil distribution is mainly affected by inhomogeneity of the reservoir when the oilfield entered the stage with high water content. In this case, sedimentary microfacies controls the sedimentary inhomogeneity, which cause the diversities of remaining oil's distribution in horizontal and vertical directions, so the main cause of remaining oil lies in the imperfections of the system of injection and extraction, which provides the geology fundation to further potentiality tapping of reserviors and adjustment of pattern.
出处
《大庆石油学院学报》
CAS
北大核心
2002年第2期12-14,共3页
Journal of Daqing Petroleum Institute
关键词
大庆萨尔图油田
非主力油层
剩余油
分布特征
砂体
注采系统
non-main pay
remaining oil
character of distribution
sand bodies
system of injection and extraction