“膨胀力”作用下致密砂岩储层石油运聚特征

发布时间：2018-01-28 10:37

本文关键词： 致密油运移动力油气成藏泥质隔、夹层致密砂岩裂缝型油藏储层　出处：《吉林大学学报(地球科学版)》2017年05期 　论文类型：期刊论文

【摘要】：在致密油成藏动力已有认识的基础上,从力的性质和作用效果的角度,对比分析了推动石油在致密储层中运移的"膨胀力"与常规储层情况下浮力之间的区别。论述了在"膨胀力"作用下,石油在理想致密砂岩模型中的运移模式、运移距离及致密油藏扩张规律。基于以上认识并结合实例,建立模型从动力学的角度分析了致密砂岩中隔、夹层及裂缝对石油运移富集的影响。分析认为:由于致密油与常规储层油藏在运移动力及运移模式上的差别,致密砂岩中隔、夹层将会在一定程度上阻碍石油的运移,造成成藏上物性较好的"空白带";在致密砂岩裂缝型油藏中,与裂缝直接接触物性较好的砂体是最具可能性的石油聚集区带。
[Abstract]:On the basis of the known knowledge of the dynamics of dense oil reservoir formation, from the point of view of the nature of force and the effect of action. This paper compares and analyzes the difference between the "expansion force" which promotes the migration of oil in the tight reservoir and the buoyancy in the case of conventional reservoir, and discusses the migration mode of petroleum in the ideal tight sandstone model under the action of "expansion force". The migration distance and the law of tight reservoir expansion. Based on the above understanding and an example, the model is established to analyze the tight sandstone intermedia from the angle of dynamics. The influence of intercalation and fracture on petroleum migration and enrichment. The analysis shows that the tight sandstone is separated because of the difference between tight oil reservoir and conventional reservoir in migration dynamics and migration mode. The intercalation will hinder the migration of oil to some extent, resulting in a better physical properties of the "blank zone". In the tight sandstone fractured reservoir, the sand body with good physical property directly contact with the fracture is the most likely oil accumulation zone.
【作者单位】：油藏地质及开发工程国家重点实验室;西南石油大学地球科学与技术学院;中国石油新疆油田分公司勘探开发研究院;中国石油长庆油田分公司勘探开发研究院;
【基金】：国家重点基础研究发展计划(“973”计划)项目(2014CB239005) 国家自然科学基金项目(41502146) 中国石油科技创新基金项目(2015D-5006-0101)~~
【分类号】：P618.13
【正文快照】： 3.中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依8340004.中国石油长庆油田分公司勘探开发研究院,西安710018Supported by the Major State Basic Research Development Program(“973”Program)of China(2014CB239005),theNational Natural Science Foundation of Chin

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