中国石油大学学报（自然科学版）Issue(6)：18-23,6.DOI:10.3969/j.issn.1673-5005.2014.06.003
鄂尔多斯盆地延长组长7致密油储层微观孔隙特征研究
Study of pore features in Chang7 tight oil reservoir, Yanchang layer,Ordos Basin
摘要
Abstract
The pore features of Chang7 tight oil reservoir, Yanchang layer, Ordos Basin, were studied using new pore meas-uring methods, such as FESEM, Micro-CT, QEMSCAN, MAPS, and were comprehensively analyzed combining conventional testing results. The results show that pores in tight oil reservoir are found continuously distributed from micro- to nano-scales. Pores being larger than 2 μm in radius constitute the primary reservoir storage space. The main types of pores are residual in-tergranular pores and dissolved pores. Different scale of pores and throats are well connected as a net, which works as effec-tive flow channels for fluid. Fine-grained lake deposition and subsequent complex diagenesis characterized by strong compac-tion, strong cementation and strong solution, are the main reasons that micro-pores exist extensively in Chang7 tight oil reser-voir. As the results of superior configuration relationships between the source and the formation and the high pressure injec-tion condition, Chang7 tight oil reservoir is well saturated with oil.关键词
鄂尔多斯盆地/致密油/长7油层组/细粒沉积/纳米孔隙Key words
Ordos Basin/tight oil/Chang 7 oil-bearing layer/fine-grained sediment/Nano-pores分类
能源科技引用本文复制引用
尤源,牛小兵,冯胜斌,王芳,王成玉,李卫成..鄂尔多斯盆地延长组长7致密油储层微观孔隙特征研究[J].中国石油大学学报（自然科学版）,2014,(6):18-23,6.基金项目
国家“973”重点基础研究发展计划(2014CB239003) （2014CB239003）
国家自然科学基金重大项目(41390451) （41390451）
中国石油天然气股份有限公司重大科技专项(2011E-2602) （2011E-2602）
