中国石油大学学报（自然科学版）2016，Vol.40Issue(2)：23-33,11.DOI:10.3969/j.issn.1673-5005.2016.02.003
一南堡凹陷古近系泥页岩孔隙结构特征
Characteristics of pore structures in Paleogene shales in Nanpu Sag
摘要
Abstract
Using rock pyrolysis, X-ray diffraction mineral analysis, electron microscopy scanning, and nitrogen adsorption tests, this research studied and discussed the pore structures in Paleogene shales in Nanpu Sag. The new results show that Nanpu Sag shale reservoir can be characterized as the follows. It is of low porosity and tight; and part of the samples have high content of brittle minerals, which can be easy to form a fracture network. The microscopic pore types are organic, inter-granular, intragranular and microfracture. Micropores and mesopores provide most of the pore surface area and pore volume, which are the main space for shale gas adsorption and storage. Pore structures include ink-bottle-like and slit-like pores, of which ink-bottle-like pores are the main pores favorable for gas absorption. The TOC content is the main internal factor that controls the volume and surface of nanopores of the Paleogene shale gas reservoir in Nanpu Sag. Quartz has good correlation with pore volume. Brittle mineral has a positive effect for the construction of the pores. Lastly TOC is the main factor affect-ing shale methane adsorption capacity.关键词
南堡凹陷/泥页岩孔隙结构/纳米孔隙/吸附Key words
Nanpu Sag/shale pore structure/Nanopores/adsorption分类
天文与地球科学引用本文复制引用
罗瑞,查明,何皓,高长海,曲江秀,华振飞,王轩..一南堡凹陷古近系泥页岩孔隙结构特征[J].中国石油大学学报（自然科学版）,2016,40(2):23-33,11.基金项目
国家“973”重点基础研究发展计划(2014CB239005) （2014CB239005）
国家重大科技专项(2011ZX05001-001-006) （2011ZX05001-001-006）
山东省自然科学基金项目(ZR2013DM016) （ZR2013DM016）
