成都理工大学学报（自然科学版）2011，Vol.38Issue(3)：313-320,8.
自生绿泥石对砂岩储层孔隙度-渗透率关系的影响——以鄂尔多斯盆地姬塬-华庆地区三叠系长8油层组为例
Influence of authigenic chlorite on the relationship of porosity to permeability in the sandstone reservoir: A case study from Chang-8 oil-bearing formation of Triassic in Jiyuan-Huaqing area, Ordos Basin
摘要
Abstract
The content of authigenic chlorite mainly presented in the form of pore-lining cement is the highest in the authigenic clay minerals in Chang-8 oil-bearing formation of Triassic in the Jiyuan-Huaqing area of Ordos Basin. The calculation of content of authigenic chlorite and the relationship between porosity and permeability show that the distribution characteristics of the authigenic chlorite have a direct impact on the relationship of porosity to permeability in the sandstone reservoir. Overall, with the increasing of the content of the authigenic chlorite in sandstone, the porosity tends to increase to obtain the same permeability. However, for different ranges of permeability and contents of the authigenic chlorite, the porosity increases in different degrees to get the same permeability. Based on the principle, when considering the limit of porosity for defining the permeable sandstone or calculating reserves, the content of the authigenic chlorite should be considered. For example,for the permeability of 0. 1× 10-3 μm2 of Chang-8 oil-bearing formation in the Jiyuan-Huaqing area, when authigenic chlorite lacks or has a lower content, the limit of porosity could be 7%~8%, while authigenic chlorite has a higher content, for instance, the chlorite content is 8% ~10% or higher, the limit of porosity could be 9%~T0%.关键词
自生绿泥石/孔隙度/渗透率/长8油层组/姬塬-华庆地区Key words
authigenic chlorite/ porosity/ permeability/ Chang-8 oil-bearing formation/Jiyuan-Huaqing area分类
地质学引用本文复制引用
兰叶芳,黄思静,梁瑞,张雪花..自生绿泥石对砂岩储层孔隙度-渗透率关系的影响——以鄂尔多斯盆地姬塬-华庆地区三叠系长8油层组为例[J].成都理工大学学报（自然科学版）,2011,38(3):313-320,8.基金项目
国家重大专项(2008ZX05001-004-003) （2008ZX05001-004-003）
