页岩的物理化学吸附性能研究

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• 英文论文题名：Study on Physical and Chemical Adsorption Properties of Shale
• 论文作者：王英滨 ; 陈颂 ; 于炳松
• 英文论文作者：Yingbin Wang ; Song Chen ; Bingsong Yu ; School of Science ; China University of Geosciences ; School of Earth Sciences and Resources ; China University of Geosciences
• 年：2016
• 作者机构：中国地质大学(北京)数理学院;中国地质大学(北京)地球科学与资源学院;
• 论文关键词：孔隙结构 ; 孔体积 ; 吸附 ; 分形
• 会议召开时间：2016-07-01
• 会议录名称：中国化学会第30届学术年会摘要集-第三十一分会：胶体与界面化学
• 语种：中文
• 分类号：P584
• 学会代码：ZGHY
• 会议名称：中国化学会第30届学术年会-第三十一分会 ; 胶体与界面化学
• 会议地点：中国辽宁大连
• 主办单位：中国化学会
• 学会名称：中国化学会
• 页数：1
• 文件大小：182k
• 原文格式：D
• 会议级别：全国

摘要

选取位于渝东南地区的下寒武统牛蹄塘组的页岩样品,探讨了页岩的表面结构、孔隙特征等及其孔隙特征对于吸附能力的影响。扫描电镜观察表明,页岩中广泛存在各类孔隙及微裂缝,并于有机碳中观测到大量10nm左右的孔,黄铁矿颗粒间观测到粒间孔。N_2吸附、脱附实验表明,页岩样品孔径集中在1nm和4nm,1-2nm及3-4nm的孔对于10nm以下的孔体积贡献较大;中孔对总孔体积贡献较大,微孔对总比表面积贡献较大。同时,页岩样品具有良好的分形特征,分形维数集中在2.7-2.8,孔隙表面粗糙程度较大,微孔普遍存在。CO_2吸附实验表明,孔径小于2nm时,孔径集中在0.3-0.7nm的孔径范围,有利于提供更大的比表面。吸附实验及有机碳含量测试表明,在一定有机碳含量范围内,页岩甲烷吸附量与某特定范围的孔体积呈良好的相关性。
The physical and chemical adsorption properties of shale were studied.Various types of pores and microcracks were observed by SEM in the shale samples.Results of Nitrogen adsorption/desorption indicated that the pore-size of shale samples was concentrated in 1nm and 4nm,the pores from 1 to 2nm and 3 to 4nm provided most of the pore-volume(under 10nm).These shale samples had good fractal characterization.Most of the fractal dimensions were between 2.7 and 2.8,which means the surface were rougher and micropores widespread.The adsorption of carbon dioxide on shales indicated that most of the pores were between 0.3 and 0.7nm when the poresize was under 2nm.This pore-size distribution tended to provide more surface area.The amount of the methane adsorbed on shales was positively correlated with pore-volume in a certain range.

引文

[1]Wang,M.;Xue,H.T.;Tian,S,S.;Ronald W.T.W.;Wang,Z.W.Marine and Petroleum Geology.2015,67:144.
    [2]Chalmers,G.R.,Bustin,R.M.,Power,I.M.Aapg Bulletin.2012,96(6):1099.