摘要
百口泉油田百21井区百口泉组砾岩油藏具有明显的沉积旋回和韵律性,加剧了注水开发中的层间、层内矛盾,使注入水单层突进严重,含水率上升快,开发效果不佳。根据砾岩储层沉积韵律特征,结合测井和生产动态资料,研究总结出砾岩油藏的基本沉积韵律类型和特征,建立了3类不同韵律模式的典型水驱曲线,对比分析不同沉积韵律类型砾岩层的注水开发效果,结果表明正韵律层的底部、反韵律层的顶部以及复合韵律层的中部油层动用程度好、采出程度高;复合韵律层段的注水开发效果明显优于正韵律和反韵律层段。
Apparent sedimentary cycle and rhythmicity of conglomerate oil reservoir in Baikouquan formation sharpened the intraformational and interlayer contradictions during waterflood development. Injected water broken through seriously in single layer, the water cut increased quickly, and development effect was bad. According to the sedimentary rhythm characteristics of the conglomerate oil reservoir and being combined with well logging and production behavior data,the basic type and characteristic of the sedimentary rhythm were summarized. Three typical waterflooding curves of different rhythm model were established. Comparative analysis of waterflooding result of the single sand layer with different types of sedimentary rhythm was made. The results indicated that high producing degree and high recovery percent of reserves of oil - bearing formations occured mainly at the bottom of positive rhythmic units, the top of negative rhythmic units, and the middle of composite rhythmic units; waterflooding development effect of the composite rhythmic units was much better than the positive and negative rhythmic units.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2006年第1期20-22,26,共4页
Petroleum Geology and Recovery Efficiency
基金
中国石油中青年创新基金项目"高含水期油藏大孔道动态变化机理与识别模型"(04E7029)资助
关键词
沉积韵律
油层动用程度
注水开发效果
砾岩油藏
百口泉油田
sedimentary rhythm, producing degree of oil - bearing formation, waterflooding development effect, conglomerate oil reservoir,Baikouquan Oilfield
