华南地质与矿产2017，Vol.33Issue(4)：383-393,11.DOI:10.3969/j.issn.1007-3701.2017.04.007
川西坳陷中江气田侏罗系沙溪庙组致密砂岩储层特征及主控因素分析
Reservoir Characteristics and the Main Controlling Factors on the Mid-dle Jurassic Shaximiao Formation Tight Sandstone Reservoirs in the Zhongjiang Slope of Western Sichuan Depression
摘要
Abstract
The reservoir characteristics and the impact of the main controlling factors on the Shaximiao formation of compact clastic reservoirs in the eastern slope of Chuan Xi dression are described based on petrologic,petro-physical analysis,porosity types and diagenesis.Reservoirs are composed of medium or fine grained lithic arkoses and feldspathic litharenites,and primary feldspar lithic sandstone.The reservoirs are characterized by low porosity and low permeability.The dominant type of porosity is surplus intergranular porosity and interparticle dissolution pore. Depositional factor and various types of diagenetic alterations have caused considerable influence on the reservoir properties.The reservoir geological model is coarse-grained,high-feldspar,low rock debris,low carbon-ate cement.The high quality reservoir in Gaomiaozi-Fenggu area is mainly concentrated in the JS21,JS24 and JS33 sand groups,and JS11,JS12,JS14,JS22,JS31 sand groups in Zhongjiang-Huilong area.关键词
川西坳陷/中江气田/沙溪庙组/致密砂岩储层/储层主控因素Key words
Western Sichuan Depression/Zhongjiang slope/Shaximiao Formation/Tight Sandstone Reservoirs/The Main Controlling Factors of Reservoir分类
地质学引用本文复制引用
蔡李梅,付菊,阎丽妮..川西坳陷中江气田侏罗系沙溪庙组致密砂岩储层特征及主控因素分析[J].华南地质与矿产,2017,33(4):383-393,11.基金项目
国家科技重大专项"四川盆地碎屑岩层系油气富集规律与勘探评价"(2016ZX05002-004). （2016ZX05002-004）
