Study on borehole arrangement mode for eliminating the blank zone in blind area of drilling gas extraction

LI Pu; ZHANG Xiaodong; QIN Muguang

doi:10.19835/j.issn.1008-4495.2020.06.007

Mining Safety & Environmental Protection > 2020 > 47(6): 37-42. > DOI: 10.19835/j.issn.1008-4495.2020.06.007

LI Pu, ZHANG Xiaodong, QIN Muguang. Study on borehole arrangement mode for eliminating the blank zone in blind area of drilling gas extraction[J]. Mining Safety & Environmental Protection, 2020, 47(6): 37-42. DOI: 10.19835/j.issn.1008-4495.2020.06.007

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Study on borehole arrangement mode for eliminating the blank zone in blind area of drilling gas extraction

1. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
2. Zhengzhou Coal Industry (Group) Co., Ltd., Zhengzhou 450042, China;
3. Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region in Henan, Jiaozuo 454000, China;
4. State Key Laboratory of the Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing 400037, China;
5. CCTEG Chongqing Research Institute, Chongqing 400037, China

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Received Date: December 07, 2019
Revised Date: November 02, 2020
Available Online: September 16, 2022

Graphical Abstract

Abstract

Abstract

In order to eliminate the blank zone in blind area of gas extraction in coal seam caused by drilling gas extraction, this paper studies the existing mode of the blank zone among the typical crossing holes. The analysis shows there is no blank zone in blind area of gas extraction in the "triple eye" borehole arrangement mode, the optimized square borehole arrangement mode and the equilateral triangle borehole arrangement mode, and the utilization rate of the effective extraction area of the equilateral triangle mode is 1.9 times that of the "triple eye" mode and the optimized square method. Taking the 25031 open-off cut of Gaocheng Coal Mine in Zhengzhou mining area as the project research object, the field test and investigation are carried out on the quantity of drilling work and average gas extraction pure quantity of single borehole under different borehole arrangement mode. The results show the equilateral triangle mode requires the least quantity of drilling work, while the "triple eye" mode requires the most quantity of drilling work; the average gas extraction pure quantity of single borehole in optimized square method is slightly higher than that in equilateral triangle mode, and the average gas extraction pure quantity of single borehole is the lowest in the "triple eye" mode, combined with the analysis results of typical borehole arrangement mode, the equilateral triangle mode is considered as the optimal scheme, the research results can be used as a guide for the design of crossing holes.
- gas extraction,
- blank zone,
- drilling,
- borehole arrangement mode,
- equilateral triangle,
- pure gas amount,
- drilling quantity

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References

[1]	周福宝, 王鑫鑫, 夏同强, 等.瓦斯安全抽采及其建模[J].煤炭学报, 2014, 39(8):1659-1666.
[2]	黄学满.缓倾斜厚煤层瓦斯渗流非线性模型及抽采钻孔优化设计[J].矿业安全与环保, 2018, 45(6):69-72.
[3]	WU B, HUA M, FENG X Y, et al. Study on methods of determining gas extraction radius with numerical simulation[J]. Procedia Engineering, 2012, 45:345-351.
[4]	ZHANG C, XU J, PENG S, et al. Dynamic behavior of gas pressure and optimization of borehole length in stress relaxation zone during coalbed methane production[J]. Fuel, 2018, 233:816-824.
[5]	周厚权, 申凯, 陈宾.瓦斯抽采钻孔漏气类型划分与高效封孔技术应用研究[J].矿业安全与环保, 2019, 46(1):33-36.
[6]	郝富昌, 刘明举, 孙丽娟. 基于多物理场耦合的瓦斯抽放半径确定方法[J].煤炭学报, 2013, 38(增刊1):106-111.
[7]	江万刚.阳泉矿区本煤层顺层钻孔标准化抽采研究与实践[J].矿业安全与环保, 2019, 46(3):78-81.
[8]	闫志铭, 张翔, 王亮, 等.煤层渗透率各向异性对本煤层瓦斯预抽影响规律的研究[J].矿业安全与环保, 2017, 44(5):45-48.
[9]	田卫东, 张群.含瓦斯煤渗透特性参数—孔隙率同步测试方法的研究进展[J].矿业安全与环保, 2019, 46(3):82-85.
[10]	王维忠, 刘东, 许江, 等.瓦斯抽采过程中钻孔位置对煤层参数演化影响的试验研究[J].煤炭学报, 2016, 41(2):414-423.
[11]	王宾宾, 岳高伟, 毕伟. 煤层钻孔损伤区半径的影响研究[J].煤矿安全, 2017, 48(3):21-24.
[12]	王旭锋, 张东升, 李国君, 等.铁法矿区高瓦斯低透气性煤层群卸压煤层气抽采钻孔布置[J].煤炭学报, 2011, 36(8):1296-1301.
[13]	刘军, 王兆丰, 李学臣, 等.消除矿井瓦斯抽采空白带方法的研究[J].煤炭科学技术, 2012, 40(12):59-61.
[14]	徐青伟, 王兆丰.预抽煤层瓦斯消除空白带钻孔布置方式的优化[J].煤矿安全, 2015, 46(8):152-155.
[15]	王洁, 祁文斌.采煤工作面顺层钻孔消突效果评价[J].煤矿安全, 2013, 44(1):157-160.
[16]	唐恩贤, 党利鹏, 闫国锋.基于时空属性的黄陵矿区瓦斯精准化预抽实践[J].煤炭科学技术, 2018, 46(8):87-92.

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