华庆地区长81 储层微观孔隙结构特征研究
网络出版日期: 2012-08-20
基金资助
国家科技重大专项“大型油气田及煤层气开发鄂尔多斯盆地大型低渗透岩性地层油气藏开发示范工程”(编号:2011ZX05044)资助。
Microscopic pore structure characteristics of Chang 81 reservoir in Huaqing area
Online published: 2012-08-20
韩光明 , 周家雄 , 裴健翔 , 王立锋 . 华庆地区长81 储层微观孔隙结构特征研究[J]. 岩性油气藏, 2012 , 24(4) : 19 -23 . DOI: 10.3969/j.issn.1673-8926.2012.04.004
Based on investigation of cast slices,high pressure mercury injection,nuclear magnetic resonance and constant speed mercury injection,this paper studied the microscopic pore structure and microscopic pore fluid characteristics of Chang 81 reservoir in Huaqing area. The result shows that the microscopic pore structure types of Chang 81 reservoir are complex, among which intergranular pore-dissolved pore combination type is perfect,with better connectivity,pore throat radius is larger,and the movable fluid saturation is higher. And this pore combination type is the advantage channel for fluid filtration. Pore throat type,pore throat connectivity,pore throat size and claymineral contents together affect the pore fluid occurrence and flowability. The pore throat size plays a main role,especially the larger throat has an obvious advantage in the improvement of seepage ability.
Key words: diaper; seismic imaging; exploration target; Yinggehai Basin
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