Research on coal seam acidizing and permeability increasing technology based on EGF permeable material

SONG Jianmin; ZOU Yongming

Safety in Coal Mines > 2023 > 54(5): 161-168.

SONG Jianmin, ZOU Yongming. Research on coal seam acidizing and permeability increasing technology based on EGF permeable material[J]. Safety in Coal Mines, 2023, 54(5): 161-168.

Citation:

SONG Jianmin, ZOU Yongming. Research on coal seam acidizing and permeability increasing technology based on EGF permeable material[J]. Safety in Coal Mines, 2023, 54(5): 161-168.

Citation:

SONG Jianmin, ZOU Yongming. Research on coal seam acidizing and permeability increasing technology based on EGF permeable material[J]. Safety in Coal Mines, 2023, 54(5): 161-168.

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Research on coal seam acidizing and permeability increasing technology based on EGF permeable material

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Published Date: May 19, 2023

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Abstract

According to the characteristics of high gas and low permeability of No.2 coal seam in Xiaohuigou Mine, in the 2204 working face of Xiaohuigou Mine, the acidizing and permeability increasing technology of coal seam is studied. The test results show that the microscopic pore structure of No.2 coal seam is relatively complex, and the tortuous degree of micropores and small holes is high, which is beneficial to gas storage, and the mineral composition is mainly SiO2, Al2O3, TFe, CaO and MgO. According to the mechanism of acidizing and permeability increasing of coal seam that has been mastered, the EGF acidizing and permeable materials suitable for No.2 coal seam are ammonium hydrogen fluoride（5%）, KCl（２％）, citric acid（８％）, sulfamic acid （7%）, catalyst（1.5%）, C7H13NO4S（0.8%）, EDTA（0.5%）, and KMS-6（l%）. The results show that the maximum volume fraction of gas extraction in single hole is 68.2%, and the volume fraction of gas extraction in single hole is increased by 1.22-25 times. After acidification, the gas mixing flow in single hole was increased by 7.17-11.75 times. The gas content in the test area decreased by 18.68%-25.91%. Compared with other permeability increasing methods, it has the advantages of simple construction, strong universality and remarkable effect, and solves the problem of difficult gas drainage in Xiaohuigou coal seam with high gas and low permeability.

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[1]	崔聪, 李晓绅, 舒龙勇, 等.瓦斯抽采达标智能决策平台的研发与应用[J].煤矿安全, 2022, 53(3): 120-124. CUI Cong, LI Xiaoshen, SHU Longyong, et al. Research and application of intelligent decision-making platform for gas excavation from standard[J]. Safety in Coal Mines, 2022, 53(3): 120-124.
[2]	彭守建, 贾立, 许江, 等.煤层瓦斯抽采多物理场参数动态响应特征及其耦合规律[J].煤炭学报, 2022, 47(3): 1235-1243. PENG Shoujian, JIA Li, XU Jiang, et al. Dynamic response characteristics and coupling law of multi physical field parameters in coal seam gas drainage[J]. Journal of China Coal Society, 2022, 47(3): 1235-1243.
[3]	罗明坤.低透气性煤层酸化压裂复合增透技术研究[D].阜新: 辽宁工程技术大学, 2017.
[4]	于宝种, 钱恒峰.基于层次分析法的矿井瓦斯抽采基础条件达标评价[J].中国矿业, 2022, 31(2): 149-154. YU Baozhong, QIAN Hengfeng. Evalution of basic conditions for coal mine gas drainage based on analytic hierarchy process[J]. China Mining, 2022, 31(2): 149-154.
[5]	冯仁俊.煤层群分层水力压裂与多层综合压裂增透效果对比研究[J].煤矿安全, 2021, 52(12): 21-28. FENG Renjun. Comparative study on permeability enhancement effect of separate-layer fracturing and multi-layers comprehensive fracturing in coal seam group[J]. Safety in Coal Mines, 2021, 52(12): 21-28.
[6]	赵丹, 刘晓青.液态CO₂煤层增透技术及应用研究[J].煤炭科学技术, 2021, 49(10): 107-114. ZHAO Dan, LIU Xiaoqing. Research and application of anti-reflection technology of liquid CO₂ coal seam[J]. Coal Science and Technology, 2021, 49(10): 107-114.
[7]	张晓刚, 姜文忠, 都锋.高瓦斯低透气性煤层增透技术发展现状及前景展望[J].煤矿安全, 2021, 52(2): 169-176. ZHANG Xiaogang, JIANG Wenzhong, DU Feng. Development status and prospect of permeability enhancement technology in high gas low permeability coal seam[J]. Safety in Coal Mines, 2021, 52(2): 169-176.
[8]	符辉, 寇建新, 秦佩.高压组合水射流径向多分支钻孔煤层增透技术优化[J].煤矿安全, 2021, 52(2): 88-92.FU Hui, KOU Jianxin, QIN Pei. Optimization of coal seam permeability improvement technology by radial multi-branch borehole high pressure combined water jet[J]. Safety in Coal Mines, 2021, 52(2): 88-92.
[9]	张永将, 陆占金.超高压水力割缝煤层增透成套装置研制及应用[J].煤炭科学技术, 2020, 48(10): 97-104. ZHANG Yongjiang, LU Zhanjin. Development and application of complete set of ant-reflection equipment for ultra-high pressure hydraulic seam cutting[J]. Coal Science and Technology, 2020, 48(10): 97-104.
[10]	张迎新, 杨杰, 王鹏飞, 等.酸化工艺的煤层增透新技术[J].黑龙江科技大学学报, 2014, 24(2): 177-181. ZHANG Yingxin, YANG Jie, WANG Pengfei, et al. Study on anti-reflection technology of coal seam based on acidification process[J]. Journal of Heilongjiang University of Science ＆ Technology, 2014, 24(2): 177-181.
[11]	李胜, 罗明坤, 范超军, 等.基于核磁共振和低温氮吸附的煤层酸化增透效果定量表征[J].煤炭学报, 2017, 42(7): 1748-1756. LI Sheng, LUO Mingkun, FAN Chaojun, et al. Quantitative characterization of the effect of acidification in coals by NMR and low-temperature nitrogen adsorption[J]. Journal of China Coal Society, 2017, 42(7): 1748-1756.
[12]	贾男.煤层脉动式酸化压裂增透技术及其应用[J].中国安全科学学报, 2020, 30(10): 75-81. JIA Nan. Research and application of pulsating acid fracturing technology in coal seam[J]. China Safety Science Journal, 2020, 30(10): 75-81.
[13]	钱旺, 陈西昂, 陈寻璐, 等.不同pH值对酸化改性煤样瓦斯吸附特性的影响实验研究[J].煤矿安全, 2021, 52(6): 12-16. QIAN Wang, CHEN Xi’ang, CHEN Xunlu, et al. Experiment on influence of different PH values on gas adsorption characteristics of acidified coal samples[J]. Safety in Coal Mines, 2021, 52(6): 12-16.
[14]	贾男.低透气性煤层多组分酸化压裂增透技术研究[J].矿业安全与环保, 2021, 48(3): 27-32. JIA Nan. Study on antireflection technology of multi-component acid fracturing in low permeability coal seam[J]. Mining Safety ＆ Environmental Protection, 2021, 48(3): 27-32.
[15]	赵建忠.煤层气水合物理论与技术[Ｍ].北京: 科学出版社, 2011.
[16]	贾男.基于低温氮吸附法的酸化煤样孔隙分形特征研究[J].煤矿安全, 2021, 52(1): 53-57. JIA Nan. Study on pore fractal characteristics of acidified coal samples based on low temperature nitrogen experiment[J]. Safety in Coal Mines, 2021, 52(1): 53 -57.
[17]	凡永鹏, 霍中刚, 赵晶, 等.煤的表面自由能随瓦斯抽采的变化规律[J].煤矿安全, 2021, 52(12): 15-20. FAN Yongpeng, HUO Zhonggang, ZHAO Jing, et al. Surface free energy of coal and its variation law with gas extraction[J]. Safety in Coal Mines, 2021, 52(12): 15-20.
[18]	江成, 李奇贤, 韩恩德.瓦斯抽采过程中本煤层及邻近层储层参数演化特征[J].煤矿安全, 2021, 52(11): 1-7. JIANG Cheng, LI Qixian, HAN Ende. Evolution characteristics of reservoir parameters of drainage layer and adjacent layer in the process of gas drainage[J]. Safety in Coal Mines, 2021, 52(11): 1-7.
[19]	谢明亮, 高宏烨.山西三元煤业股份有限公司酸化压裂试验研究[J].能源技术与管理, 2021, 46(6): 46 -48. XIE Mingliang, GAO Hongye. Experimental study on acidizing fracturing in Shanxi Sanyuan Coal Industry Co., LTD[J]. Energy Technology and Management, 2021, 46(6): 46-48.

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