中国石油大学学报（自然科学版）2012，Vol.36Issue(4)：32-38,7.DOI:10.3969/j.issn.1673-5005.2012.04.006
低渗透致密砂岩储层成藏期油气运移的动力分析
Dynamic analysis on hydrocarbon migration of accumulati(o)n periods in low permeability-tight sandstone reservoir
摘要
Abstract
By restoring the overpressure of main accumulation period in the deep of Kelasu structural belt of Kuqa depression and Yanchang formation of Yishan slope of Ordos Basin, the possible dynamic conditions during the process of hydrocarbon migration in the low permeability -tight sandstone reservoir were estimated combined with the analysis on reservoir physical properties evolution. The results show that the main dynamics of hydrocarbon migration in the low permeability-tight sandstone reservoir is characterized by diversity. The reservoir becomes tight in the natural gas accumulation period in the deep of Kelasu structural belt. The main dynamic of natural gas migration is the overpressure formed by the multiple factors of high-rate deposition, hydrocarbon generation, and tectonic compression and so on. The reservoir does not become tight in the oil infill injection early and middle stage in Yanchang formation of Yishan slope of Ordos Basin. The oil migrates laterally due to buoyancy. The reservoir becomes tight in the oil infill injection late stage. It mainly migrates laterally along the residual pathways that are oil-wet due to long-term contact with oil. The main dynamic of oil migration is capillary force and the difference of excess pressure among the reservoirs also plays a role in the oil migration. So the oil migration of main accumulation periods in Yanchang formation of Yishan slope of Ordos Basin is the joint action of the multi-stage and multi-dynamic.关键词
低渗透致密砂岩/主要成藏期/储层致密史/油气运移/流体动力分析/鄂尔多斯盆地/库车坳陷Key words
low permeability-tight sandstone/ main accumulation period/ reservoir tteht history/ hydrocarbon migration/ hy-drodynamic analysis/ Ordos Basin/ Kuqa depression分类
能源科技引用本文复制引用
张凤奇,王震亮,武富礼,高兴军,罗然昊,RUI Zhenhua..低渗透致密砂岩储层成藏期油气运移的动力分析[J].中国石油大学学报（自然科学版）,2012,36(4):32-38,7.基金项目
国家重大油气专项课题(2008ZX05003-02) （2008ZX05003-02）
国家“十一五”科技支撑计划项目(2007BAB17B05) （2007BAB17B05）
