微生物增产煤层气作用机理研究  

Research on Mechanism of Microorganism Enhancing Coalbed Methane Production

作　　者：任付平[1] 宾枚 毛冉[2] 李占峰 REN Fuping;BIN Mei;MAO Ran;LI Zhanfeng(Engineering Technology Research Institute,Petrochina Huabei Oilfield Company,Hebei 062552;The Fourth Oil Production Plant,Petrochina Huabei Oilfield Company,Hebei 065000;The Third Oil Production Plant,Petrochina Huabei Oilfield Company,Hebei 062456)

机构地区：[1]华北油田公司工程技术研究院,河北062552 [2]华北油田公司第四采油厂,河北065000 [3]华北油田公司第三采油厂,河北062456

出　　处：《中国煤层气》2023年第5期33-37,共5页China Coalbed Methane

摘　　要：通过向煤层产出液中添加营养剂激活内源菌群,与高阶煤相互作用,开展了煤层内源菌与高阶煤相互作用机理的研究。分别利用气相色谱仪、元素分析仪、傅里叶变换红外光谱仪等仪器设备对微生物作用后气体组分、煤组分、煤样品官能团、煤样品的微晶结构以及煤样品孔隙度进行测定。实验结果表明:反应过程中产生了氮气、甲烷等生物气体;微生物作用后煤样品中的中C、S元素含量平均降低18.99%、20.17%;N、H元素平均含量升高119.76%、70.84%;煤样中芳烃含量下降,醚基、羟基含量上升;微生物作用后煤样品孔隙度平均增加31.4%。The mechanism of coal seam indigenous microorganisms enhancing coalbed methane production is studied through the interaction between high-rank coal and indigenous microorganisms which were activated by adding nutrients into the produced coalbed fluid. The gas composition, coal components, functional groups, microcrystalline structure and porosity of coal samples after microbial action are measured by using various instruments, including gas chromatography, elemental analyzer, and Fourier-transform infrared spectrometer. The experimental results show that biological gases such as nitrogen, carbon dioxide and methane were generated during the reaction process. After the microbial metabolism, the average contents of carbon(C) and sulfur(S) in the coal samples decreased by 18.99% and 20.17% while nitrogen(N) and hydrogen(H) increased by 119.76% and 70.84%. The content of aromatic hydrocarbons in coal samples decreased, while ether and hydroxyl increased in the coal sample. The average porosity of coal samples increased by 31.4% after microbial action.

关 键 词：内源微生物 煤层气 高阶煤 煤组分 孔隙度 

分 类 号：TE37[石油与天然气工程—油气田开发工程]