Xiao Dong, Keita Mohamed, Zhang Cong, Wang Enyuan, Diaz Norberto Daniel, Wu Junyong, He Hailun, Ma Jing, Julien Essono Oyono
CUMT-UCASAL Joint Research Center for Biomining and Soil Ecological Restoration, State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiangsu 221116 China.
Shanxi Coal Bed Methane Company of PetroChina, Jincheng, Shanxi 048000, China.
Data Brief. 2022 Jun 4;43:108353. doi: 10.1016/j.dib.2022.108353. eCollection 2022 Aug.
In-situ coal bio-gasification can be defined as one of the coal bio-mining methodology that fully utilizes the methanogenic bacteria in coal to review the current findings, namely anaerobic digestion of organic components. The following experiment has been done in regards, one vertical well and one multi-branch horizontal well were used as experiment wells and two vertical wells were used as control wells, the pilot test was carried out with single well nutrition injection method. By applying the above mentioned method, the concentration of Cl ion and number altered in spp. were used to trace nutrition diffusion. Furthermore, technical implementation results analysis has been made with the observation of CH production changes and coal bed biome evolution. Gas production rates in each well were monitored by using the FLLQ gas roots flow mete. The concentration of CH and CO were evaluated by using the Agilent 7890A gas chromatograph, on the other hand, concentrations of Cl were determined by the application of ICS-1100 ion chromatography system. The F fluorescence method was adopted to test for the presence of methanogenic bacteria. In the interim of the completion stage, the study stated that the bacterial diversity of underground water of Z-7H well has a high pass sequence with the experimental period of 814 days. Gas production data in Z-159 and Z-7H wells showed the gasification of coal lasted 635 and 799 days, yielded 74817 m and 251754 m coalbed methane, respectively. Furthermore, experimental data presented that one time nutrition injection in anthracite coalbed methane wells achieved an average of 717 days of continuous gas production among all experimental wells. The above fore-said study dedicated the significance of native bacterial fermentation, as it proven the fact that anthracite can be applied to accomplish coal bio-gasification and coalbed methane production stimulation in-situ.
原位煤炭生物气化可定义为一种煤炭生物开采方法，它充分利用煤炭中的产甲烷菌来回顾当前的研究结果，即有机成分的厌氧消化。为此进行了以下实验，使用一口垂直井和一口多分支水平井作为实验井，两口垂直井作为对照井，采用单井营养注入法进行中试。通过应用上述方法，利用Cl离子浓度和特定物种数量的变化来追踪营养物质的扩散。此外，通过观察CH产量变化和煤层生物群落演化对技术实施结果进行了分析。使用FLLQ气体根流量计监测各井的产气速率。使用安捷伦7890A气相色谱仪评估CH和CO的浓度，另一方面，应用ICS - 1100离子色谱系统测定Cl的浓度。采用F荧光法检测产甲烷菌的存在。在完成阶段的中期，研究表明Z - 7H井地下水的细菌多样性与814天的实验期具有高通序列。Z - 159井和Z - 7H井的产气数据表明，煤炭气化持续了635天和799天，分别产出74817立方米和251754立方米的煤层气。此外，实验数据表明，无烟煤层气井一次性营养注入在所有实验井中实现了平均717天的连续产气。上述研究证明了原生细菌发酵的重要性，因为它证明了无烟煤可用于实现原位煤炭生物气化和刺激煤层气生产这一事实。
