注入非烃气体提高煤层气采收率的数值模拟  

Numerical Simulation of Injecting Non-hydrocarbon Gas for Enhancing Methane Production

作　　者：关钰[1] 梁海峰[1] 郭迎[1] 贺博[1] 

机构地区：[1]太原理工大学化学化工学院,太原030024

出　　处：《煤炭技术》2017年第6期64-66,共3页Coal Technology

基　　金：国家自然科学基金青年基金(51106104);山西省自然科学基金青年基金(20120210022-5)

摘　　要：应用四参数生长方法(QSGS)重构煤岩三维结构,并基于Fick定律、多分子Langmuir等温吸附方程及LBM数值方法,分别模拟注入CO_2、N_2、烟道气开采煤层气的吸附/解吸、扩散过程,比较不同气体的作用机理和差异,分析得出注入烟道气效果更好,且混合气体中N_2比例越大,开采时间越短。Coalbed＇s structure is reconstituted by using QSGS; the adsorption/desorption and diffusion processes after injecting C02,N2,flue-gas are simulated which are based on the Lattice Bohzmann method combined with the multi-molecule langmuir isotherm adsorption equation and the Fick law. According to results, comparing the effects and mechanisms of different gases; obtaining the result that flue-gas＇s injection is better; and the greater proportion of N2,the less mining time.

关 键 词：非烃气体 LBM方法 煤层气采出率 

分 类 号：P618.11[天文地球—矿床学]