柴达木盆地昆北油田切6 区E1+2 碎屑岩储层特征及其控制因素
网络出版日期: 2011-08-20
基金资助
中国石油青海油田分公司勘探开发研究院外协项目(编号:资环B046)“昆北油区储层特征研究”资助
Characteristics and controlling factors of E1+2 clastic reservoir in Qie 6 block of Kunbei Oilfield in Qaidam Basin
Online published: 2011-08-20
贺静 , 冯胜斌 , 袁效奇 , 韩鹏 , 解古巍 , 张才利 . 柴达木盆地昆北油田切6 区E1+2 碎屑岩储层特征及其控制因素[J]. 岩性油气藏, 2011 , 23(4) : 75 -80 . DOI: 10.3969/j.issn.1673-8926.2011.04.013
Based on the data of sections, cores, scanning electron microscope, mercury penetration and physical properties, the characteristics and controlling factors in Qie 6 block of Kunbei Oilfield in Qaidam Basin are systematically studied. The result shows that the clastic rocks are mainly arkose, lithic arkose and feldspathic litharenite with lowcompositional maturity and moderate-high textural maturity. The primary intergranular pores are the main reservoir spaces. The pore structure is characterized by high displacement pressure, small pore throat radius, poor connection and poor sorting. As low-porosity and low-permeability reservoir, it is mostly controlled by sedimentary microfacies and diagenesis such as compaction, cementation and dissolution, amongwhich compaction dominates when the depth increases to some extent.
Key words: outcrop section; Yanchang Formation; sandstone component; Ordos Basin
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