本煤层瓦斯抽采钻孔合理密封深度确定
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摘要
为了确定本煤层瓦斯抽采钻孔的合理密封深度,进而改善本煤层瓦斯抽采钻孔的封孔效果,提出了瓦斯抽采钻孔合理密封深度的综合判定办法。通过理论分析钻孔周围煤体应力分布和破坏情况,并利用ZKXG30K矿用钻孔窥视仪直观确定了抽采钻孔内部情况,根据数值模拟法和现场钻屑法的实测结果,初步确定了井下工作面瓦斯抽采钻孔的合理密封深度,最终结合五阳矿53105工作面现场试验应用的验证,确定了五阳矿53105工作面较理想的钻孔密封深度为14m.研究成果为本煤层瓦斯抽采钻孔高效密封提供了依据。
To improve the sealing effects on horizontal gas drainage borehole,and solve problems of rational sealing depth for borehole,we have proposed a packaged technology system of judging rational sealing depth. Internal conditions of boreholes were got using the infrared ZKXG30K borehole imaging tool,and a reasonable depth for sealing was determined for coal seam in test field. According to the numerical simulation method and the actual measurement results of the in-situ cuttings method,the reasonable sealing depth of the gas drainage holes in the underground working face has preliminarily been determined,and engineering experiments in the 53105 mining area of Wuyang Coal Mine have been carried out. Results show that 14 m sealing depth is more ideal for the 53105 working face of the mine,which provides a theoretical guidance for the rational efficiency sealing depth of horizontal gas drainage borehole.
To improve the sealing effects on horizontal gas drainage borehole,and solve problems of rational sealing depth for borehole,we have proposed a packaged technology system of judging rational sealing depth. Internal conditions of boreholes were got using the infrared ZKXG30K borehole imaging tool,and a reasonable depth for sealing was determined for coal seam in test field. According to the numerical simulation method and the actual measurement results of the in-situ cuttings method,the reasonable sealing depth of the gas drainage holes in the underground working face has preliminarily been determined,and engineering experiments in the 53105 mining area of Wuyang Coal Mine have been carried out. Results show that 14 m sealing depth is more ideal for the 53105 working face of the mine,which provides a theoretical guidance for the rational efficiency sealing depth of horizontal gas drainage borehole.
引文
[1]袁亮.煤与瓦斯共采理论与关键技术[C]//北京:中国煤炭学会成立五十周年高层学术论坛,2012.YUAN Liang. Coal and gas co-extraction theory and key technologies[C]//Beijing:China Coal Society’s 50th Anniversary High-level Academic Forum,2012.
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[8]周福宝,王鑫鑫,夏同强.瓦斯安全抽采及其建模[J].煤炭学报,2014,39(8):1659-1666.ZHOU Fu-bao,WANG Xin-xin,XIA Tong-qiang. Safe gas extraction and its modeling[J]. Journal of China Coal Society,2014,39(8):1659-1666.
[9] Aguilera R F,Ripple R D,Aguilera R. Link between endowments,economics and environment in conventional and unconventional gas reservoirs[J]. Fuel,2014,126:224-238.
[10] Javadpour F,McClure M,Naraghi M E. Slip-corrected liquid permeability and its effect on hydraulic fracturing and fluid loss in shale[J]. Fuel,2015,160:549-559.
[11] Moore T A. Coalbed methane:a review[J]. International Journal of Coal Geology,2012,101:36-81.
[12]刘国泉.关于应用钻屑量与钻屑瓦斯解吸指标判定突出危险性若干问题的讨论[J].煤矿安全,1993(2):35-40.LIU Guo-quan. Discussion on the application of drilling bits and drill cuttings gas desorption indicators to determine the risk of a number of outstanding issues[J].Safety in Coal Mines,1993(2):35-40.
[13]李松涛.封孔段钻孔失稳机制及封孔材料特性分析[D].焦作:河南理工大学,2017.LI Song-tao. Analysis on instability mechanism of sealing segment boreholes and charateristics of sealing material[D]. Jiaozuo:Henan Polytechnic University,2017.
[14]徐龙仓.提高煤层气抽采钻孔封孔效果研究与应用[J].中国煤层气,2008(1):23-24,8.XU Long-cang. Study on improving the sealing effect of CMM drainage boreholes and its application[J]. China Coalbed Methane,2008(1):23-24,8.
[15]王林,方前程,王兆丰.水力挤出合理封孔深度的确定和实践[J].煤,2007(9):5-7.WANG Lin,FANG Qian-cheng,WANG Zhao-feng. The assurance of sealing hole depth and practice in hydraulic screen[J]. Coal,2007(9):5-7.
[16]周红星,程远平,刘洪永,等.突出煤层穿层钻孔孔群增透技术及应用[J].煤炭学报,2011,36(9):1515-1518.ZHOU Hong-xing,CHENG Yuan-ping,LIU Hong-yong,et al. Permeability improvement technology of array crossing boreholes and its application in outburst coal seam[J]. Journal of China Coal Society,2011,36(9):1515-1518.
[17]徐文全,赵恩来,马衍坤,等.钻屑量采样技术分析及改进[J].煤田地质与勘探,2009,37(1):78-80.XU Wen-quan,ZHAO En-lai,MA Yan-kun,et al. The sampling technique analysis and improvement of drilling crumbs[J]. Coal Geology and Exploration,2009,37(1):78-80.
[18]廖志恒,桂祥友,徐佑林.煤矿钻屑量与解吸指标的测定及误差分析[J].矿业研究与开发,2008,28(2):75-77.LIAO Zhi-heng,GUI Xiang-you,XU You-lin. Determination of drill cuttings weight and gas desorption Index and their error analysis[J]. Mining Research and Development,2008,28(2):75-77.
[19]文光才,王先义.突出预测钻屑量指标的探讨[J].煤炭工程师,1998(3):32-34,49.WEN Guang-cai,WANG Xian-yi. Discussion on outburst predictionindex of drill cuttings[J]. Coal Engineer,1998(3):32-34,49.
[20] ZHANG Zhi-gang. Prediction of multi-borehole undermine coalbed gas drainage[J]. Journal of Coal Science&Engineering(China),2009,15(3):295-298.
[21] LIU Jian-zhong. The control of coal mine gas and coordinated exploitation of coal bed methane in China[J].Journal of Coal Science&Engineering(China),2009,15(3):267-272.
[22] LI Rui,XU Wei. Technology of gas drainage and utilization in Huaibei mining area[J]. Journal of Coal Science&Engineering(China),2009,15(3):278-283.
[23] ZHENG Chun-shan,CHEN Zhong-wei,Kizil M,et al.Characterisation of mechanics and flow fields around inseam methane gas drainage borehole for preventing ventilation air leakage:A case study[J]. International Journal of Coal Geology,2016,162:123-138.
[24]翟成,向贤伟,余旭,等.瓦斯抽采钻孔柔性膏体封孔材料封孔性能研究[J].中国矿业大学学报,2013,42(6):982-988.ZHAI Cheng,XIANG Xian-wei,YU Xu,at al. Sealing performance of flexible gel sealing material of gas drainage borehole[J]. Journal of China University of Mining&Technology,2013,42(6):982-988.
[2]谢和平,周宏伟,薛东杰,等.我国煤与瓦斯共采:理论、技术与工程[J].煤炭学报,2014,39(8):1391-1397.XIE He-ping,ZHOU Hong-wei,XUE Dong-jie,et al.Theory,technology and engineering of simultaneous exploitation of coal and gas in China[J]. Journal of China Coal Society,2014,39(8):1391-1397.
[3]李树刚,林海飞.煤与甲烷共采学导论[M].北京:科学出版社,2014.LI Shu-gang,LIN Hai-fei. Introduction to coal and methane comining[M]. Beijing:Science Press,2014.
[4]国家安全生产监督管理总局,国家煤矿安全监察局.煤矿安全规程[M].北京:煤体工业出版社,2009.Ministry of Emergency Management of China,Nation Coal Mine Safety Administration. Coal mine safety regulation[M]. Beijing:Coal Industry Publishing House,2009.
[5] Noack K. Control of gas emissions in underground coal mine[J]. International Journal of Coal Geology,1998,35:57-82.
[6]林柏泉,周世宁,张仁贵.三相泡沫密封性能的实验研究[J].中国矿业大学学报,1992(3):16-23.LIN Bo-quan,ZHOU Shi-ning,ZHANG Ren-gui,et al.Experimental study on three-phase foam sealing performance[J]. Journal of China University of Mining&Technology,1992(3):16-23.
[7]王兆丰,李杰,杨宏民,等.抽采钻孔密封失效的二次处理措施[J].煤矿安全,2012,43(5):86-88.WANG Zhao-feng,LI Jie,YANG Hong-min,et al. Aretreatment measure on failing hole sealing of gas drill hole[J]. Coal Safety,2012,43(5):86-88.
[8]周福宝,王鑫鑫,夏同强.瓦斯安全抽采及其建模[J].煤炭学报,2014,39(8):1659-1666.ZHOU Fu-bao,WANG Xin-xin,XIA Tong-qiang. Safe gas extraction and its modeling[J]. Journal of China Coal Society,2014,39(8):1659-1666.
[9] Aguilera R F,Ripple R D,Aguilera R. Link between endowments,economics and environment in conventional and unconventional gas reservoirs[J]. Fuel,2014,126:224-238.
[10] Javadpour F,McClure M,Naraghi M E. Slip-corrected liquid permeability and its effect on hydraulic fracturing and fluid loss in shale[J]. Fuel,2015,160:549-559.
[11] Moore T A. Coalbed methane:a review[J]. International Journal of Coal Geology,2012,101:36-81.
[12]刘国泉.关于应用钻屑量与钻屑瓦斯解吸指标判定突出危险性若干问题的讨论[J].煤矿安全,1993(2):35-40.LIU Guo-quan. Discussion on the application of drilling bits and drill cuttings gas desorption indicators to determine the risk of a number of outstanding issues[J].Safety in Coal Mines,1993(2):35-40.
[13]李松涛.封孔段钻孔失稳机制及封孔材料特性分析[D].焦作:河南理工大学,2017.LI Song-tao. Analysis on instability mechanism of sealing segment boreholes and charateristics of sealing material[D]. Jiaozuo:Henan Polytechnic University,2017.
[14]徐龙仓.提高煤层气抽采钻孔封孔效果研究与应用[J].中国煤层气,2008(1):23-24,8.XU Long-cang. Study on improving the sealing effect of CMM drainage boreholes and its application[J]. China Coalbed Methane,2008(1):23-24,8.
[15]王林,方前程,王兆丰.水力挤出合理封孔深度的确定和实践[J].煤,2007(9):5-7.WANG Lin,FANG Qian-cheng,WANG Zhao-feng. The assurance of sealing hole depth and practice in hydraulic screen[J]. Coal,2007(9):5-7.
[16]周红星,程远平,刘洪永,等.突出煤层穿层钻孔孔群增透技术及应用[J].煤炭学报,2011,36(9):1515-1518.ZHOU Hong-xing,CHENG Yuan-ping,LIU Hong-yong,et al. Permeability improvement technology of array crossing boreholes and its application in outburst coal seam[J]. Journal of China Coal Society,2011,36(9):1515-1518.
[17]徐文全,赵恩来,马衍坤,等.钻屑量采样技术分析及改进[J].煤田地质与勘探,2009,37(1):78-80.XU Wen-quan,ZHAO En-lai,MA Yan-kun,et al. The sampling technique analysis and improvement of drilling crumbs[J]. Coal Geology and Exploration,2009,37(1):78-80.
[18]廖志恒,桂祥友,徐佑林.煤矿钻屑量与解吸指标的测定及误差分析[J].矿业研究与开发,2008,28(2):75-77.LIAO Zhi-heng,GUI Xiang-you,XU You-lin. Determination of drill cuttings weight and gas desorption Index and their error analysis[J]. Mining Research and Development,2008,28(2):75-77.
[19]文光才,王先义.突出预测钻屑量指标的探讨[J].煤炭工程师,1998(3):32-34,49.WEN Guang-cai,WANG Xian-yi. Discussion on outburst predictionindex of drill cuttings[J]. Coal Engineer,1998(3):32-34,49.
[20] ZHANG Zhi-gang. Prediction of multi-borehole undermine coalbed gas drainage[J]. Journal of Coal Science&Engineering(China),2009,15(3):295-298.
[21] LIU Jian-zhong. The control of coal mine gas and coordinated exploitation of coal bed methane in China[J].Journal of Coal Science&Engineering(China),2009,15(3):267-272.
[22] LI Rui,XU Wei. Technology of gas drainage and utilization in Huaibei mining area[J]. Journal of Coal Science&Engineering(China),2009,15(3):278-283.
[23] ZHENG Chun-shan,CHEN Zhong-wei,Kizil M,et al.Characterisation of mechanics and flow fields around inseam methane gas drainage borehole for preventing ventilation air leakage:A case study[J]. International Journal of Coal Geology,2016,162:123-138.
[24]翟成,向贤伟,余旭,等.瓦斯抽采钻孔柔性膏体封孔材料封孔性能研究[J].中国矿业大学学报,2013,42(6):982-988.ZHAI Cheng,XIANG Xian-wei,YU Xu,at al. Sealing performance of flexible gel sealing material of gas drainage borehole[J]. Journal of China University of Mining&Technology,2013,42(6):982-988.