定向长钻孔水力压裂增渗技术预抽煤巷条带瓦斯的应用研究
|
摘要
为提高低渗、高瓦斯突出煤层煤巷条带瓦斯抽采效率,实现低渗、突出煤层煤巷条带瓦斯的快速有效治理,在2130煤矿4号煤层24223运输巷开展了井下定向长钻孔水力压裂增渗技术试验研究。试验结果表明,试验区内4号煤层水力压裂影响半径为30 m,煤层透气性提高了4.59倍,缩短了瓦斯抽采时间,提高了瓦斯抽采效果。
In order to improve the efficiency of strip gas extraction in low permeability and high gas outburst coal seam,and to realize the rapid and effective control of strip gas in low permeability and high gas outburst coal seam,a pilot study on hydraulic fracturing and seepage enhancement technology of directional long borehole in No.4 coal seam of 2130 Coal Mine was carried out.The test results showed that the influence radius of hydraulic fracturing in No.4 coal seam was 30 m,the permeability of coal seam was increased by 4.59 times,the time of gas extraction was shortened,and the effect of gas extraction was improved.
In order to improve the efficiency of strip gas extraction in low permeability and high gas outburst coal seam,and to realize the rapid and effective control of strip gas in low permeability and high gas outburst coal seam,a pilot study on hydraulic fracturing and seepage enhancement technology of directional long borehole in No.4 coal seam of 2130 Coal Mine was carried out.The test results showed that the influence radius of hydraulic fracturing in No.4 coal seam was 30 m,the permeability of coal seam was increased by 4.59 times,the time of gas extraction was shortened,and the effect of gas extraction was improved.
引文
[1] 翟成,李贤忠,李全贵.煤层脉动水力压裂卸压增透技术研究与应用[J].煤炭学报,2011,36(12):1996-2001.Zhai Cheng,Li Xianzhong,Li Quangui.Research and application of coal seam pulsation hydraulic fracturing pressure relief and anti-reflection technology[J].Journal of China Coal Society,2011,36(12):1996-2001.
[2] 任海慧,张凤杰,袁德权,等.近距离突出煤层群开采预抽煤巷条带瓦斯研究[J].中州煤炭,2015(2):24-27.Ren Haihui,Zhang Fengjie,Yuan Dequan,et al.Study on strip gas in pre-extracted coal roadway with coal seam mining in close distance[J].Zhongzhou Coal,2015(2):24-27.
[3] 吕有厂.水力压裂技术在高瓦斯低透气性矿井中的应用[J].重庆大学学报,2010,33(7):102-107.Lü Youchang.Application of hydraulic fracturing technology in high gas and low permeability mines[J].Journal of Chongqing University,2010,33(7):102-107.
[4] 姜光杰,孙明闯,付江伟.煤矿井下定向压裂增透消突成套技术研究及应用[J].中国煤炭,2009,35(11):10-14.Jiang Guangjie,Sun Mingchuang,Fu Jiangwei.Research and application of complete set technology for directional fracturing and anti-disclosure in coal mine[J].China Coal,2009,35(11):10-14.
[5] 袁亮,林柏泉,杨威.我国煤矿水力化技术瓦斯治理研究进展及发展方向[J].煤炭科学技术,2015,43(1):45-49.Yuan Liang,Lin Baiquan,Yang Wei.Research progress and development direction of gas control technology in coal mine hydraulic technology in China[J].Coal Science and Technology,2015,43(1):45-49.
[6] 袁志刚,任梅清,沈永红,等.穿层钻孔煤巷条带水力压裂防突技术及应用[J].重庆大学学报,2016(1):72-78.Yuan Zhigang,Ren Meiqing,Shen Yonghong,et al.Hydraulic fracturing technology and application of layered coal roadway strips[J].Journal of Chongqing University,2016(1):72-78.
[7] 孙炳兴,王兆丰,伍厚荣.水力压裂增透技术在瓦斯抽采中的应用[J].煤炭科学技术,2010,38(11):78-80.Sun Bingxing,Wang Zhaofeng,Wu Hourong.Application of hydraulic fracturing technology in gas drainage[J].Journal of Coal Science and Technology,2010,38(11):78-80.
[8] 张俭.碎软低透突出煤层定向长钻孔整体水力压裂高效增透技术[J].中国煤炭,2018(7):101-105.Zhang Jian.High-efficiency anti-reflection technology for integral hydraulic fracturing of directional long borehole in broken soft and low permeability coal seam[J].China Coal,2018(7):101-105.
[2] 任海慧,张凤杰,袁德权,等.近距离突出煤层群开采预抽煤巷条带瓦斯研究[J].中州煤炭,2015(2):24-27.Ren Haihui,Zhang Fengjie,Yuan Dequan,et al.Study on strip gas in pre-extracted coal roadway with coal seam mining in close distance[J].Zhongzhou Coal,2015(2):24-27.
[3] 吕有厂.水力压裂技术在高瓦斯低透气性矿井中的应用[J].重庆大学学报,2010,33(7):102-107.Lü Youchang.Application of hydraulic fracturing technology in high gas and low permeability mines[J].Journal of Chongqing University,2010,33(7):102-107.
[4] 姜光杰,孙明闯,付江伟.煤矿井下定向压裂增透消突成套技术研究及应用[J].中国煤炭,2009,35(11):10-14.Jiang Guangjie,Sun Mingchuang,Fu Jiangwei.Research and application of complete set technology for directional fracturing and anti-disclosure in coal mine[J].China Coal,2009,35(11):10-14.
[5] 袁亮,林柏泉,杨威.我国煤矿水力化技术瓦斯治理研究进展及发展方向[J].煤炭科学技术,2015,43(1):45-49.Yuan Liang,Lin Baiquan,Yang Wei.Research progress and development direction of gas control technology in coal mine hydraulic technology in China[J].Coal Science and Technology,2015,43(1):45-49.
[6] 袁志刚,任梅清,沈永红,等.穿层钻孔煤巷条带水力压裂防突技术及应用[J].重庆大学学报,2016(1):72-78.Yuan Zhigang,Ren Meiqing,Shen Yonghong,et al.Hydraulic fracturing technology and application of layered coal roadway strips[J].Journal of Chongqing University,2016(1):72-78.
[7] 孙炳兴,王兆丰,伍厚荣.水力压裂增透技术在瓦斯抽采中的应用[J].煤炭科学技术,2010,38(11):78-80.Sun Bingxing,Wang Zhaofeng,Wu Hourong.Application of hydraulic fracturing technology in gas drainage[J].Journal of Coal Science and Technology,2010,38(11):78-80.
[8] 张俭.碎软低透突出煤层定向长钻孔整体水力压裂高效增透技术[J].中国煤炭,2018(7):101-105.Zhang Jian.High-efficiency anti-reflection technology for integral hydraulic fracturing of directional long borehole in broken soft and low permeability coal seam[J].China Coal,2018(7):101-105.