松南中央坳陷泉四段上生下储式致密砂岩油成藏主控因素

发布时间：2018-03-31 09:05

  本文选题：主控因素　切入点：致密砂岩油藏　出处：《中国石油大学学报(自然科学版)》2016年06期

【摘要】：基于"优质源岩控藏"理论和"储层甜点找油"思想,应用测、录井、试油、薄片等资料,系统总结松南中央坳陷区泉四段致密油的分布规律,剖析不同类型致密砂岩油成藏的主控因素。研究表明:致密砂岩油藏集中分布在长岭凹陷内及其周边斜坡区,具有"满坳含油、宏观连片"的特征和"东富西贫、南富北贫"的差异性;青一段下段烃源岩残余有机碳含量(TOC)大于2.0%的优质源岩展布范围控制致密油藏分布格局;异常高压与源储断层的空间配置关系控制下部砂组含油性,剖面上油气下排深度最大为140 m;平面上超压大于10 MPa、与断层距离小于2 500 m的区域是Ⅱ~Ⅳ砂组的致密油藏富集区;优质储层物性"甜点"控制致密油富集程度及产量;坳陷型湖盆上生下储式致密砂岩油藏的形成主要存在凹陷区"源内直排倒灌"和斜坡区"源边反转断层遮挡"两种成藏模式。
[Abstract]:Based on the theory of "high quality source rock and reservoir control" and the idea of "finding oil for reservoir desserts", the distribution of dense oil in the fourth member of spring in Songnan central depression is systematically summarized by applying the data of logging, logging, oil testing and thin slice. The main factors controlling the formation of different types of tight sandstone oil reservoirs are analyzed. The results show that the tight sandstone reservoirs are mainly distributed in and around the Changling sag, with the characteristics of "Man depression oil bearing, macroscopic continuous slice" and "rich in the east and poor in the west". The difference of the poor in the south and the north, the distribution of the source rock residual organic carbon (TOC) more than 2.0% in the lower member of the first member of Qinghai Province controls the distribution pattern of the tight reservoir, the relationship between the abnormal high pressure and the spatial distribution of the source reservoir fault controls the oil content of the lower sand formation. The maximum depth of oil and gas discharge on the section is 140 m, the area with overpressure more than 10 MPA and fault distance less than 2 500 m is a dense reservoir rich area of sand formation 鈪，

本文编号：1690053