摘要
通过对国内外制约煤层气开发的因素和能源需求的分析,指出了研究煤层气的解吸吸附机理的意义。通过分析国内外解吸吸附机理的研究历史和现状,将煤层气的解吸吸附机理归纳综合为单分子层吸附和多分子层吸附两大类;将煤层气的解吸吸附机理模型归纳为五类,即Lang-muir等温吸附及其扩展模型、BET多分子层吸附模型、吸附势理论模型、吸附溶液模型和实验数据拟合分析模型等。对影响煤层气解吸吸附的因素,如煤层的性质、孔隙性结构、煤层气的组分、压力条件和温度条件等进行了详细的分析说明指出,解吸吸附机理未来研究的重点方向是在考虑目前已认识的复杂因素条件下,以研究煤层气吸附状态和煤层气的解吸动态过程为主,尤其是甲烷与水和煤层中碳分子的结合与分离的方式。
By analyzing factors that restricting the development of CBM and energy demand at home and abroad,the paper pointed out that researching CBM desorption and adsorption mechanism is significant.Through analyzing domestic and international history and current status of CBM desorption and adsorption mechanism,CBM desorption and adsorption mechanism was grouped into two classes: monolayer adsorption and multi-molecular layer adsorption.CBM desorption and adsorption mechanism model was divided into five categories: Langmuir isothermal and the extended model,BET multi-molecular layer adsorption model,adsorption potential theoretical model,adsorption solution model and experimental data analysis model.Factors that affecting CBM desorption and adsorption which included coal bed property,pore structure,components of CBM,pressure conditions,temperature conditions and so on were analyzed in detail.The research showed future direction of desorption and adsorption mechanism,especially the way of methane and water combining and separation with carbon molecules in coal bed,was to study mainly the dynamic process of CBM desorption and adsorption states in the condition of complex factors at current.
出处
《油气井测试》
2010年第6期37-44,共8页
Well Testing
基金
国家重大专项"大型气田及煤层气开发"专项支持
课题编号2009ZX05038001
关键词
煤层气
解吸/吸附
机理
模型
coalbed methane(CBM),absorption/desorptio,mechanisum,model
