不同温度作用下油页岩内部孔隙结构精细表征
投稿时间:2018-01-17  修订日期:2018-10-29  点此下载全文
引用本文:
摘要点击次数: 70
全文下载次数: 35
作者单位E-mail
高涛 太原理工大学 矿业工程学院 894816124@qq.com 
赵静 太原理工大学 矿业工程学院 zhaojing19860207@163.com 
基金项目:国家自然科学基金资助项目(51704206);山西省应用基础研究面上青年基金资助项目(201701D221238)
中文摘要:利用显微CT试验分析系统和压汞仪,对取自抚顺西露天矿的油页岩试样经过高温作用热解后的孔隙结构进行度量表征,得出:(1)300~600℃温度段是抚顺油页岩内部有机质热解的主要阶段;(2)在显微CT能分辨的孔隙尺度(﹥1.94μm)范围内,油页岩的孔隙不发育;在压汞法测定的孔隙尺度(7nm~1.94μm)范围内,油页岩的孔隙较为发育。高温作用后,油页岩内部的有机质不断发生热解,各孔径阶段的孔隙不断形成,孔隙结构也在发生变化,各孔径阶段的孔隙逐渐连通,超大孔(﹥1.94μm)和中孔(0.1μm~1μm)的孔隙率逐渐增大,小孔(0.01μm~0.1μm)和微孔(﹤0.01μm)的孔隙率也基本处于增大的状态,为油气物质的产出提供通道。
中文关键词:油页岩  孔隙结构  热解  孔隙率
 
Advanced characterization of pores in oil shale at different temperatures
Abstract:The oil shale samples from Fushun west open-pit mine were pyrolyzed at high temperature,then the pore structure of the samples was characterized by a micro-CT experimental system and mercury injection apparatus. The results show that: ①300 ~ 600 ℃ are the main stage of organic matter pyrolysis inside Fushun oil shale; ②The pores of the oil shale are not developed in the range of the pore size (>1.94μm) that can be resolved by the micro-CT. The pores of the oil shale are more developed in the range of pore size (7nm~1.94 μm) measured by the mercury injection method. After the effect of high temperature, the organic matter in the oil shale is continuously pyrolyzed, pores in each aperture are constantly formed, the pore structure is constantly changed and pores connected gradually. The porosity of super large pores (>1.94μm) and middle hole (0.01μm~0.1μm) increased gradually, the porosity of small holes (0.01μm~0.1μm) and micropore (< 0.01μm) are also in an increasing state basically, which provide a channel for hydrocarbon substances.
keywords:Oil Shale  Pore Structure  Pyrolysis  Porosity
查看全文  查看/发表评论  下载PDF阅读器
设备展厅
您是第4467032位访问者  备案许可证编号:京ICP备13036454号
版权所有:《中国矿业》杂志社有限公司
地  址: 北京市朝阳区安定门外小关东里10号院东小楼 邮编:100029 电话:010-68332570 88374940 E-mail: zgkyzzs@163.com