石油实验地质2016，Vol.38Issue(2)：197-203,210,8.DOI:10.11781/sysydz201602197
川南地区下寒武统筇竹寺组页岩储层特征
Shale reservoir characteristics of the Lower Cambrian Qiongzhusi Formation in the southern Sichuan Basin
摘要
Abstract
Experimental source-reservoir data from three wells in the Mianyang-Changning intracratonic sag in the southern Sichuan Basin showed that the Qiongzhusi Formation in the study area features high TOC, thick black shale, high maturity, and high brittleness. Although the southern Sichuan Basin has experienced multiple episodes of tectonic movement, the B1 well block still has favorable preservation conditions. Micro⁃reservoir space includes organic pores, inorganic pores ( intercrystal pores in clay minerals, intergranular pores and intra⁃granular dissolution pores in brittle minerals, and intergranular pores in pyrites), and micro⁃cracks ( micro⁃structural seams, diagenetic shrinkage joints and dissolution seams) , and can be further subdivided into 9 types. Most of the pores have narrow necks, and some are slit type holes. Fractures are tablet or wedge shaped. Mesopores were abundant , and there also exist micropores and macropores. High quality shales have high entrance and BET specific surface area, which is favorable for the preservation of free and adsorbed gas. TOC, maturity, diagenesis and pore fluid pressure determined the difference of pore type and distribution.关键词
微观储集空间/孔隙结构/筇竹寺组/下寒武统/页岩气/川南地区Key words
micro reservoir space/pore structure/Qiongzhusi Formation/Lower Cambrian/shale gas/southern Sichuan Basin分类
能源科技引用本文复制引用
王同,熊亮,徐猛,董晓霞,周瑞琦,付晓宁..川南地区下寒武统筇竹寺组页岩储层特征[J].石油实验地质,2016,38(2):197-203,210,8.基金项目
国家重大科技专项（2011ZX－05002－004）和中国石化油田事业部非常规重大导向项目“四川盆地及周缘页岩气整体评价与目标优选”（13KT－14）资助。 （）
