子洲地区北部下二叠统山2 段储层特征及其形成机理
网络出版日期: 2013-04-20
基金资助
国家重点基础研究发展计划(973)项目“多种能源矿产共存成藏(矿)机理与富集分布规律”(编号:2003CB214602)资助
Reservoir characteristics and formation mechanism of Lower Permian Shan 2 member in northern Zizhou area, Ordos Basin
Online published: 2013-04-20
王万里 , 李国发 , 桂金咏 . 子洲地区北部下二叠统山2 段储层特征及其形成机理[J]. 岩性油气藏, 2013 , 25(2) : 49 -54 . DOI: 10.3969/j.issn.1673-8926.2013.02.008
Based on the analysis of cast slices, scanning electron microscope, mercury injection test and well logging, this paper studied the physical properties and formation mechanism of Shan 2 member in northern Zizhou area, Ordos Basin. The result shows that the reservoir of Shan 2 member mainly developed quartz sandstone and lithic sandstone.The reservoir spaces are mainly intergranular pores and dissolved pores of P1sh23, and micropores of P1sh22 and P1sh21 reservoirs. The reservoir belongs to low porosity and low permeability reservoir. Delta front subaqueous distributary channel is the main facies belt for forming reservoirs. The reservoir properties are controlled by sedimentation, diagenesis, pore structure types and its combination patterns. The physical properties were mainly reduced by compaction press-solution and cementation.
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