煤矿安全2019，Vol.50Issue(3)：31-34,4.DOI:10.13347/j.cnki.mkaq.2019.03.008
基于压汞法的彬长矿区直罗组砂岩孔喉分区
Pore Throat Division of Zhiluo Formation Sandstone in Binchang Mining Area Based on Mercury Injection Test
摘要
Abstract
In order to study the size and proportion of the pore throats in Zhiluo formation sandstone in Binchang Mining Area, the size and distribution of different pore throats corresponding to mercury injection pressure were studied by means of mercury injection test, which were used to divide different pore throats intervals and quantitatively describe the percentage of pore throats to pore volume. The results show that the sandstone pore throats in Zhiluo formation are more developed, more in quantity and better in connectivity, but the vertical homogeneity is poor. The macro pore throats accounted for 0.69% of the pore volume, meso pore throats accounted for 34.43% of the pore volume, and pore throats and micro pore throats accounted for 38.68% and 24.91% of the pore volume, respectively. As the main seepage channel of sandstone aquifer, medium and small pore throat, which accounts for 73.11% of pore volume, largely determines the permeability of sandstone.关键词
孔喉分区/微观结构/渗透率/压汞实验/直罗组砂岩/地下水渗流Key words
pore-throat division/microstructure/permeability/mercury injection test/Zhiluo formation sandstone/ground water seepage分类
天文与地球科学引用本文复制引用
武超,王生全,蔡玥,彭涛,武忠山,刘凯祥,龙良良..基于压汞法的彬长矿区直罗组砂岩孔喉分区[J].煤矿安全,2019,50(3):31-34,4.基金项目
国家自然科学基金资助项目(51404295) （51404295）
陕西省自然科学基金青年基金资助项目(2015JQ5185) （2015JQ5185）
陕西省科技攻关资助项目(2015GY106) （2015GY106）
