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| 煤吸附气体诱导的基质膨胀研究进展 | |
| 引用本文： | 段利江,唐书恒,夏朝辉,张铭.煤吸附气体诱导的基质膨胀研究进展[J].地球科学进展,2012,27(3):262-267. |
| 作者姓名： | 段利江 唐书恒 夏朝辉 张铭 |
| 作者单位： | 1. 中国石油勘探开发研究院亚太研究所,北京100083／中国地质大学北京能源学院,北京100083 2. 中国地质大学北京能源学院,北京,100083 3. 中国石油勘探开发研究院亚太研究所,北京,100083 |
| 基金项目： | 国家自然科学基金项目“注气驱替煤层甲烷过程中煤基质差异膨胀效应实验研究” |
| 摘 要： | 煤层渗透率变化是注气提高煤层气采收率过程中最为关注的问题之一,而煤的吸附膨胀是造成渗透率伤害的主控因素。系统总结了国内外有关煤吸附膨胀的研究成果,发现争议较多,认为其主要原因在于对膨胀机理的认识深度不够及研究方法不一。相对于膨胀计法和应力计法,光学法观测煤膨胀效应的精度较高,建议尽量采用大块的煤样,以增强对煤储层的代表性。在煤膨胀机理的研究中,建议重点分析煤大分子结构固有的力学性质,及CO2对煤分子结构可能造成的影响。 |
| 关 键 词： | 煤 吸附 膨胀 CO2 |
A Review on Gas Sorption-induced Coal Swelling |
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| Duan Lijiang,Tang Shuheng,Xia Zhaohui,Zhang Ming.A Review on Gas Sorption-induced Coal Swelling[J].Advance in Earth Sciences,2012,27(3):262-267. | |
| Authors: | Duan Lijiang Tang Shuheng Xia Zhaohui Zhang Ming |
| Institution: | 1. Asia-Pacific Department, PetroChina Research Institute of Petroleum Exploration & Development, Beijing100083, China；2.School of Energy Resources, China University of Geosciences, Beijing100083, China |
| Abstract: | The key issue of enhancing coalbed methane recovery by gas injection is reservoir permeability variation,which is controlled by gas-induced coal swelling.The research finding on coal swelling were collected and analyzed,and it was found that there exist disagreements,which is due to the lack of understanding about swelling mechanisms and different experimental methods.Compared with dilatometer and strain gauge,optical method is more accurate when measuring coal swelling.However,in future work,larger block should be adopted to represent coal reservoir more effectively.When conducting research on coal swelling mechanism,more attention should be paid to the original mechanical property of coal macromolecular structure and the impact on coal cross-linked network of CO2. |
| Keywords: | Coal Sorption Swelling CO2 |
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