石油实验地质2019，Vol.41Issue(1)：142-148,156,8.DOI:10.11781/sysydz201901142
松辽盆地长岭断陷沙河子组页岩岩相特征及其对孔隙结构的控制
Lithofacies characteristics and impact on pore structure of the Shahezi Formation shale, Changling Fault Depression, Songliao Basin
摘要
Abstract
A lithofacies classification was established based on TOC and XRD data on cores of the Shahezi Formation in the Changling Fault Depression of the Songliao Basin. There are 7 lithofacies in the study area. Scanning electron microscopy, CO2 and N2 adsorption and high pressure mercury intrusion experiments were applied to quantitatively characterize pore structure. Shale pores were developed in the Shahezi Formation, and the pore types of different lithofacies were also different. Organic matter pores were mainly developed in argillaceous shale. Shale pore size exhibited a multi-peak distribution. Mesopores were the main contributors to pore volume, accounting for an average of 50.9％. Micropores were the main contributors to specific surface area, accounting for an average of 67.8％. The development of micropores was mainly controlled by clay minerals, the development of mesopores was controlled by carbonate minerals, while the development of macropores was controlled by the combination of siliceous and clay minerals. The organic-rich argillaceous rock influenced the surface area and pore volume, and played a major role in controlling shale pore development of the Shahezi Formation.关键词
页岩岩相/孔隙结构/黏土质页岩/沙河子组/长岭断陷/松辽盆地Key words
shale lithofacies/pore structure/argillaceous shale/Shahezi Formation/Changling Fault Depression/Songliao Basin分类
能源科技引用本文复制引用
张瀛涵,李卓,刘冬冬,高凤琳,姜振学,梁志凯,杨东旭,于海龙..松辽盆地长岭断陷沙河子组页岩岩相特征及其对孔隙结构的控制[J].石油实验地质,2019,41(1):142-148,156,8.基金项目
国家科技重大专项(2016ZX05034-001-005) （2016ZX05034-001-005）
国家自然科学基金(41502123)联合资助 （41502123）
