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| 基于微孔充填模型的页岩储层吸附动力学特征分析 | |
| 引用本文： | 尹帅,丁文龙,刘建军,何建华,王濡岳,李昂,王莹莹.基于微孔充填模型的页岩储层吸附动力学特征分析[J].高校地质学报,2014,20(4):635. |
| 作者姓名： | 尹帅 丁文龙 刘建军 何建华 王濡岳 李昂 王莹莹 |
| 作者单位： | 1. 中国地质大学能源学院，北京100083; 海相储层演化与油气富集机理教育部重点实验室，中国地质大学，北京100083; 页岩气资源战略评价国土资源部重点实验室，中国地质大学，北京100083 2. 中国石油华北油田分公司勘探开发研究院,任丘,062552 3. 成都理工大学能源学院,成都,610059 |
| 基金项目： | 国家自然科学基金面上项目，国家科技重大专项专题，研究生自主创新基金项目 |
| 摘 要： | 微孔填充是吸附质分子在吸附剂纳微孔隙中、较高平衡压力下表现出来的一种吸附特征，以此为基础发展起来的热 力学理论在确定吸附剂微观结构及吸附性能研究方面起到了巨大推动作用。基于此，该文重点探讨了甲烷在页岩中吸附时 填充率θ、特征能量E、特征系数n、微分吸附功A 、吸附热Q、吸附焓ΔH 及吸附熵ΔS 的变化关系。结果表明：特征系数n 取1较为适当；温度升高特征能量E 值略降，3组样品E 值范围4.14~5.63 kJ/mol；随着θ 的不断增加，A ，Q ，｜ΔH ｜及｜ ΔS ｜等参数值逐渐降低，各能量参数随吸附进行而发生较为规律的变化，无突变。结果认为，热力学参数一定程度上代表 了TOC 及Ro 等参数的综合效应，受单一因素干扰性不强。将计算的Q 及ΔS 等热力学参数与四川盆地志留系龙马溪组页岩的 相应参数进行了对比，进一步表明四川盆地该套龙马溪组页岩具有巨大的页岩气勘探和开发潜力。 |
| 关 键 词： | 微孔 填充 页岩 甲烷 吸附 吸附热 吸附熵 |
Adsorption Dynamics Analysis of Shale Reservoir Based on Micro-pore Filling Model |
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| YIN Shuai,DING WenIong,LIU Jianjun,HE Jianhua,WANG Ruyue,LI Ang,WANG Yingying.Adsorption Dynamics Analysis of Shale Reservoir Based on Micro-pore Filling Model[J].Geological Journal of China Universities,2014,20(4):635. | |
| Authors: | YIN Shuai DING WenIong LIU Jianjun HE Jianhua WANG Ruyue LI Ang WANG Yingying |
| Abstract: | Micro-pore filling is an adsorption behavior that usually happens in micropores and high equilibrium pressure conditions, the thermodynamic theory based on this theory played a great role in determining the microscopic structures and adsorption properties. In this paper, we mainly discuss the relationship of filling rate θ, character energy E, character coefficience n, differential adsorption work A, the adsorption heat Q, the adsorption enthalpy ΔH and the adsorption entropy ΔS for methan. The results show that 1) n=1 is appropriate; 2) the value of E decreases with raising temperatures; 3) E is among 4.14~5.63 kJ/mol; with the increase of θ value, Q, ΔH, and ΔS decrease. These parameters change continuously and do not show sudden change. To some extent, the thermodynamic parameters can represent the comprehensive effects of parameters such as TOC and Ro. Comparison of the calculated parameters in this paper with the adsorption energy value of the Longmaxi shale in Sichuan basin shows that this set of shale in China has huge exploration and development potential. |
| Keywords: | Micro-pores fill shale methane adsorption the adsorption heat adsorption entropy |
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