鄂尔多斯盆地城壕地区延长组长7致密油成藏动力研究  

Research on Tight oil Reservoir Forming Dynamics for Yanchang Member Chang7 Reservoir in Chenghao Area OF Ordos basin

作　　者：张杰 

机构地区：[1]西安石油大学地球科学与工程学院,陕西西安710065 [2]陕西省油气成藏地质学重点实验室,陕西西安710065

出　　处：《辽宁化工》2016年第2期214-217,共4页Liaoning Chemical Industry

摘　　要：致密油的勘探越来越受到大家的重视。弄清致密油形成动力条件,对进一步落实该区致密油的资源潜力具有重要的指导意义。通过Petromod软件对研究区26口井的转化率进行模拟,模拟得出在135 Ma时,流体压力达到了上覆静岩压力的0.85倍,油气便开始成藏。此间断转化率介于在0.10-0.27之间,孔隙度处于15%-21%之间。计算得出研究区长73的剩余压力总体表现为北高南低,西高东低的趋势,最大的剩余压力可达近22 MPa,最小也达到了13 MPa。The tight oil exploration is more and more attended by all of us. Figuring out the tight oil formation dynamic conditions has important guiding significance to further develop the resource potential of tight oil area. The conversion rates of 26 wells in the study area were simulated by Petromod software. The simulation results show that, when fluid pressure reaches 0.85 times of the overlying lithostatic pressure in 135 Ma, oil and gas reservoir can began to form. At this moment, the conversion rate is from 0.10 to 0.27, the porosity is between 15% and 21%.Calculated results indicate that the residual pressure of chang73 is in the trend of lower from north to south and higher from east to west. The largest remaining pressure can reach almost 22 MPa, the minimum can still reach 13 MPa.

关 键 词：致密油 延长组 生烃增压 定量化 

分 类 号：TE122[石油与天然气工程—油气勘探]