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
网络出版日期: 2013-02-20
基金资助
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)以及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
Accumulation models and numerical models of tight oil:A case study from Yanchang Formation in Ordos Basin
Online published: 2013-02-20
王强 , 费怀义 , 刘合年 , 程绪彬 , 吴蕾 , 王兴志 . 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[J]. 岩性油气藏, 2013 , 25(1) : 4 -10 . DOI: 10.3969/j.issn.1673-8926.2013.01.002
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 oil numerical 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.
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