致密油聚集模型与数值模拟探讨——以鄂尔多斯盆地延长组致密油为例  

Accumulation models and numerical models of tight oil:A case study from Yanchang Formation in Ordos Basin

作　　者：郭秋麟[1] 陈宁生[1] 宋焕琪 吴晓智[1] 谢红兵[1] 

机构地区：[1]中国石油勘探开发研究院资源规划所,北京100083 [2]中国石油大学(北京)地球科学学院研究生部,北京102249

出　　处：《岩性油气藏》2013年第1期4-10,20,共8页Lithologic Reservoirs

基　　金：国家重大科技专项"岩性地层区带;圈闭评价与储层预测技术研究"(编号:2011ZX05001);中国石油勘探开发研究院创新课题"泥页岩;致密砂岩孔隙演化与油气成藏数值模拟"(编号:2011Y005)联合资助

摘　　要：致密油可划分为页岩油、互层或夹层型致密油和邻源型致密油3种,根据它们的地质特点和成藏机理建立成藏模型。结果认为:页岩油的成藏过程很特殊,既没有经历二次运移也没有进行初次运移,只发生原始运移;互层或夹层型致密油属于自生自储型,是初次运移的结果;邻源型致密油是一种过渡型油藏,介于初次运移与二次运移之间,是"膨胀力"驱动的结果。基于这种认识,提出"膨胀流"驱动论,并以此为基础建立了邻源型致密油数值模型、互层或夹层型致密油的自生自储数值模型及页岩油数值计算的容积法模型。应用实例证明,该技术具有较好的应用前景。Tight oil can be divided into shale oil, sandwich type tight oil and adjacent source type tight oil. According to their geological characteristics and accumulation mechanism, the accumulation models were established. The result shows that： （1） the shale oil accumulation process is very special, it neither experienced second migration nor primary migration, only experienced initial migration; （2） sandwich type tight oil belongs to self-generation and self-accumulation, and it is the result of primary migration; （3） adjacent source type tight oil is a kind of transitional reservoirs, its migration is different from primary and second migration, and it is the driving result of ＂expansion force＂. Based on this understanding, this paper proposed the ＂expanded flow＂ driving theory, and established adjacent source type tight oilnumerical model, sandwich type tight oil numerical model based on self-generation and self-accumulation, and the volumetric method model of shale oil numerical calculation. Application example proves that this technique has a good prospect of application.

关 键 词：致密油 页岩油 裙边油 非常规资源 成藏模型 盆地模拟 鄂尔多斯盆地 

分 类 号：P539.2[天文地球—古生物学与地层学]