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| 1 | 湘西北下寒武统牛蹄塘组页岩气形成条件分析显示文摘以野外调查、实验测试、理论分析为研究思路,对湘西北地区下寒武统牛蹄塘组页岩气的形成条件进行了分析.根据页岩厚度、有机质丰度、热演化程度以及储层物性等信息,提出龙山—永顺一带和桑植—石门一带可作为页岩气有利勘探区.研究结果表明:该套含气页岩在研究区内广泛分布,沉积厚度大,约为70~110m,有机质丰度高,达1.9%~7.0%,热演化程度高,达到过成熟阶段(2.5%~3.5%),具有形成页岩气藏资源的良好潜力;黑色页岩脆性矿物丰富、含量大,黏土矿物单一,以伊利石为主;扫描电镜观测显示研究区页岩纳米级孔裂隙发育,压汞实验测得研究区页岩孔隙度为1.59%~7.05%,反映牛蹄塘组优质的储集条件;等温吸附实验结果显示页岩的吸附气含量达0.45~1.30cm3/g,研究区页岩具有较强的气体吸附能力. | 王阳 朱炎铭 陈尚斌 张旭 张建胜 | 2013 | 中国矿业大学学报2013，42，4： | 54 |
| 2 | 注液速率及压裂液黏度对煤层水力裂缝形态的影响显示文摘注液速率及压裂液黏度是煤层气井压裂设计中两个重要的可控参数,其不仅影响水力裂缝起裂压力及压裂施工压力,而且控制水力裂缝形态。采用鄂尔多斯盆地东南缘大宁-吉县地区天然煤岩,基于试验室物理模拟试验研究注液速率及压裂液黏度对水力裂缝形态及施工压力的影响。结果表明:注液速率及压裂液黏度较小时,主裂缝与分支缝连通形成沿最大水平主应力方向的复杂裂缝网络系统;随着注液速率及压裂液黏度的增加,水力裂缝复杂程度降低,形成平直单裂缝。提高注液速率或压裂液黏度会增大施工压力。对注液速率及压裂液黏度进行合理控制,可先在井筒附近生成平直裂缝,后在远离井筒处生成复杂裂缝网络,有利于增大煤层气单井排采体积。 | 范铁刚 张广清 | 2014 | 中国石油大学学报(自然科学版)2014，38，4： | 33 |
| 3 | 实验室条件下褐煤生物气生成的化学影响因素显示文摘在实验室条件下,分别添加0.2 mol/L乙酸钠、0.2 mol/L甲酸和5 mg/L酵母浸出液作为外源碳源,研究煤层本源菌作用下褐煤生物气生成潜力和生成过程中的化学影响因素。结果表明,软褐煤和硬褐煤中有机物质都能作为独立碳源生成生物气,软褐煤生成速率(0.18 m L/(g·d))大于硬褐煤(0.13 m L/(g·d)),其组分均主要由CH4和CO2组成。有机碳源的加入对褐煤生物气生成速率和气体组分影响各异。0.2 mol/L乙酸钠可以提前甲烷的初始生成时间,同时提高生成速率,显著增加CH4含量,但总体不会影响煤样本身产生的甲烷量;0.2 mol/L甲酸不仅可以激活产甲烷菌活性,而且可以有效增加褐煤生物气产量和CH4含量,且成熟度低的软褐煤增加的效果更明显;5 mg/L酵母浸出液对产甲烷菌有抑制作用。氯仿沥青A含量高可能是导致软褐煤生物气产率高的主要原因;DOC对褐煤生物气生成影响不大。研究认为煤基质中底物可利用性和外源有机碳源类型是影响地下煤层中甲烷生成的重要因素。 | 王爱宽 秦勇 邵培 | 2016 | 煤炭学报2016，41，4： | 11 |
| 4 | 胶莱盆地水南组页岩气成藏条件与勘探方向显示文摘胶莱盆地是中国东部典型的中生代断陷盆地,陆相湖盆背景下沉积的水南组发育较厚的富有机质泥页岩,是页岩气成藏的有利区,分析其成藏条件对于明确该区页岩气下一步勘探方向具有重要意义。鉴于此,文中依据页岩气成藏的重要参数,以野外调查资料为基础,结合室内多种测试手段,从沉积环境、泥页岩分布、有机质丰度及类型、有机质成熟度、孔裂隙特征、矿物组分以及含气性等7个方面与鄂尔多斯盆地延长组7段泥页岩进行页岩气成藏地质条件对比,并采用综合信息叠加法进行勘探目标区预测。结果表明,研究区莱阳凹陷西南部、夏格庄洼陷中部和诸城凹陷北部具备页岩气富集成藏的条件,可作为下一步页岩气有利勘探目标。 | 刘鹏 朱炎铭 王怀勐 王毅 谢康珍 | 2016 | 断块油气田2016，23，1： | 7 |
| 5 | Comprehensive analysis of CBM recovery in high rank coal reservoir of Jincheng area显示文摘Coalbed methane (CBM) predicting recovery in high rank coal reservoir varies greatly in Jincheng area and it seriously influences efficient and economic exploitation of CBM resource. In order to predict more accurate CBM recovery, we conducted history matching and productivity prediction of vertical well by using COMET 3 reservoir modeling software, innovatively adopted the gas desorption experiment of bulk coal at fixed test pressure, analyzed the recovery extent method of Daning multiple-hole horizontal well and Panzhuang well group, and calculated recovery by sorption isotherm method of 14 vertical CBM wells at the abandonment pressures 1.0, 0.7, 0.5 and 0.3 MPa, respectively. The results show that the reservoir simulation methods (numerical simulation method and the recovery extent method) is more reliable than the theoretical analysis of coal sample (sorption isotherm method and desorption experiment method). Also, desorption experiment method at fixed pressure is superior to sorption isotherm method. Through the comprehensive analysis and linear correction, CBM recovery ratios in high rank coal reservoir of Jincheng area were found to be 38.64%, 49.30%, 59.30%, and 69.20% at the abandonment pressures 1.0, 0.7, 0.5 and 0.3 MPa, respectively. The research results are of significant importance in the CBM exploration and development in Jincheng area. | Liu Aihua Fu Xuehai Luo Bin Luo Peipei Jiao Chunlin | 2013 | International Journal of Mining Science and Technology2013，23，3： | 6 |
| 6 | Technical scheme and application of pressure-relief gas extraction in multi-coal seam mining region显示文摘A pressure relief gas extraction technical model of a typical mining area is proposed based on coal and gas simultaneous extraction theory. Flac3 Dwas employed to model vertical stress and displacement contour plot characteristics of non-outburst coal seam(No. 4) on top of outburst coal seam(No. 2) along strike and incline directions. Field investigations were also conducted to verify the scientific nature of the simulation. The results demonstrate that gas pressure in No. 2 coal seam dropped to approximately 0.55 MPa in the pressure relief multi-coal seam. The highest expansion rate of the coal mine reached up to 2.58%.The pressure-relief angle was 76° along the incline direction and 60° along the strike direction. As the expansion rate and pressure-relief angle increased and the gas pressure decreased, a large amount of gas flowed into the gob of No. 4 from No. 2 coal seam and was later discharged through specific gas pipes,which eliminated No. 2 outburst risks. This study resulted in positive outcomes in that gas extraction time was reduced by 13.5 days, due to pressure relief, and drilling work load was reduced by 0.1161 m/t coal. This method ensures that gas is discharged from the outburst coal seam quickly and safely,demonstrating that the proposed technical model of pressure-relief gas extraction is effective in a multi-coal seam region. | chang xiaocun tian hui | 2018 | International Journal of Mining Science and Technology2018，28，3： | 2 |
| 7 | CO_2 –H_2O–coal interaction of CO_2 storage in coal beds显示文摘In order to study the physical and chemical reaction after CO2 injected into coal beds at different condition.The physical and chemistry reaction among CO2,H2O and coal was studied,and the influence on permeability and porosity of coal beds was carried out.The experimental method was used,so did the basic theory of mineralogy,coal petrology,geochemistry,analytical geochemistry and physical chemistry.In this experiment,the changes of mineral and permeability of coal and water quality were observed through CO2 solution reacting with different coal samples.The differences could be found out by comparing the properties and microcrystalline structure before and after the reaction.There are three results were carried out:First,the content of carbonate in coal beds decreases because of the dissolution reaction between carbonate minerals and CO2 solution,and precipitation is formed by reaction of chlorite and orthoclase.Second,the result that permeability and porosity of coal beds are improved after the reaction is proposed.Third,the initial permeability of different coal samples plays a great role on the reaction,and the improvement of permeability is not obvious in the samples which have too low or too high permeability,and the improvement is good in medium permeability(0.2–3 mD). | Gao Shasha Wang Yanbin Jia Lilong Wang Hongjie Yuan Jun Wang Xianghao | 2013 | International Journal of Mining Science and Technology2013，23，4： | 2 |
| 8 | 温度对煤层气井固井二界面胶结强度的影响显示文摘固井二界面胶结质量是煤层气井高效开采一个亟待解决的工程难题,温度是影响固井二界面胶结强度的一个重要因素。为此,基于取自沁水盆地HD012井的相关样品,实验评价了温度对固井二界面胶结强度的影响规律,并结合环境扫描电镜(ESEM)方法对比分析了不同温度条件下泥饼的断面特征和孔隙结构特征,进而探讨了温度对固井二界面胶结强度的影响机理。实验结果表明,在无泥饼条件下,固井二界面胶结强度,随温度升高而增大,而在有泥饼条件下,则随温度升高而减小;有泥饼存在时,温度升高,泥饼黏土颗粒结合水膜变薄,粒间作用力减小,泥饼中孔洞增大、增多,导致泥饼渗透性增大,固井二界面胶结强度降低。 | 秦磊斌 顾军 汤乃千 郝海洋 干品 王帅 王青贵 | 2017 | 中国煤炭地质2017，29，4： | 1 |
| 9 | Influences of different substrates on simulated lignite biogas production显示文摘Using lignite samples, selected from Zhaotong basin, Yunnan province, China, as the parent source, simulating experiments of lignite biogas were conducted with 0.1% methanol, 5 mg/L yeast extract and0.2 mol/L sodium acetate solutions as the exogenous substance respectively. Variation characteristics of gas production, gas composition, VFA content and activity of coenzyme F420 in the simulated process were analyzed to discuss the influence of different substrates on lignite biogas generation. The results show that 0.1% methanol and 5 mg/L yeast extract solutions increase VFA contents in the biogas generation system(p < 0.05) and inhibit coenzyme F420 and methanogen activities significantly, so they decrease both gas amounts(p < 0.05) and CH4contents(p < 0.05). 0.2 mol/L sodium acetate solution activates coenzyme F420 and methanogen activities and improves the efficiency of enzymatic reaction, so the gas quantity(p < 0.05) and the CH4content(p < 0.01) increase significantly. Therefore, sodium acetate can be one kind of good exogenous substance for the generation of lignite biogenic gas. | Wang Aikuan Qin Yong Shao Pei | 2015 | International Journal of Mining Science and Technology2015，25，6： | 1 |
| 10 | Biogenic gas generation effects on anthracite molecular structure and pore structure显示文摘This study carries out a simulated experiment of biogenic gas generation and studies the effects of gas generation on the pore structure and molecular structure of anthracite by mercury intrusion porosimetry,X-ray diffraction(XRD)and Fourier transform infrared spectroscopy(FT-IR).The results show that methanogenic bacteria can produce biogenic gas from anthracite.CO_(2) and CH4 are the main components of the generated biogas.After generation,some micropores(<10 nm)and transitional pores(10–100 nm)in the coal samples transform into large pores.In the high-pressure stage(pressure>100 MPa)of the mercury intrusion test,the specific surface area decreases by 19.79%compared with that of raw coal,and the pore volume increases by 7.25%in total.Microbial action on the molecular structure causes changes in the pore reconstruction.The FT-IR data show that the side chains and hydroxyl groups of the coal molecular structure in coal are easily metabolized by methanogenic bacteria and partially oxidized to form carboxylic acids.In addition,based on the XRD data,the aromatic lamellar structure in the coal is changed by microorganisms;it decreases in lateral size(La)and stacking thickness(Lc).This study enriches the theory of biogenic coalbed gas generation and provides a pathway for enhancing the permeability of high-rank coal reservoirs. | Aikuan WANG Pei SHAO Qinghui WANG | 2021 | Frontiers of Earth Science2021，15，2： | 1 |
| 11 | 韩城地区煤层气成因类型及微生物开发潜力显示文摘为重新梳理韩城地区煤层气气体地球化学特征,预测低产煤层气井微生物开发的潜力区,通过煤层气和煤层产出水样品采集、煤层气气体组分和稳定同位素组成测试及微生物多样性分析,判识煤层气的成因类型,计算煤层赋存热成因气和生物成因气的相对含量,讨论适合低产煤层气井微生物开发的潜力区。结果表明:韩城地区太原组煤层气气体组分以甲烷为主,平均含量为94.78%;煤层气气体类型是以热成因气为主并含有少量次生生物成因气的混合成因气,其中次生生物成因气占比为4.79%~28.28%;煤层产出水中优势古菌种属为Methanobacterium和Methanothrix,二者之和平均占比达45.45%。基于低产井煤层埋深、构造条件、水化学条件、储层温度和古菌群落结构等关键因素,认为韩城地区中部和南部井区是有利于煤层气生物实现增产目的的潜力区。 | 郭智栋 王玉斌 鲍园 胡宜亮 袁洋 | 2023 | 西安科技大学学报2023，43，3： | 0 |
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