王永龙;刘春;孙玉宁;宋维宾;王振锋;

• 1:河南理工大学能源科学与工程学院
• 2:煤炭安全生产河南省协同创新中心
• 3:中国矿业大学物联网(感知矿山)中心

摘要(Abstract)：

为分析棱状类钻杆应用于松软突出煤层钻进存在优势的原因,基于流体力学理论,建立了棱状钻杆排渣模型,采用有限元方法,应用标准κ-ε模型方程进行计算,对钻杆旋转与周边流体相互作用的流场特征进行分析。结果表明,在钻杆棱角处形成"低压高速区",棱边处形成"高压低速区",钻杆棱边壁面流体产生速度、压力波动差,从而在"高压低速区"钻杆壁面形成强烈的"压差涡流"现象,减少了钻屑在孔底堆积致使钻孔堵塞的概率。应用棱状钻杆在松软突出煤层中施工钻孔,钻进深度提高34.6%,钻进效率提高21.1%,钻孔达标率由9.8%提高到48.3%,试验期间,钻杆强度可靠,未出现丢钻、断钻现象。

关键词(KeyWords)： 安全工程;瓦斯抽采;松软突出煤层;压差涡流;煤层钻进

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑计划项目(2013BAA03B02);; 河南省高等学校重点科研项目(15A440002);; 河南省高校基本科研业务费专项资金资助项目(NSFRF140135)

作者(Authors): 王永龙;刘春;孙玉宁;宋维宾;王振锋;

参考文献(References)：

• [1]WANG Haifeng,CHENG Yuanping,WANG Lei.Regional gas drainage techniques in Chinese coal mines[J].International Journal of Mining Science and Technology,2012(6):873-878.
• [2]LIANG Bing(梁冰),YUAN Xinpeng(袁欣鹏),SUN Weiji(孙维吉).4#seam gas drainage control techniques in Shaqu coal mine[J].Journal of Safety and Environment(安全与环境学报),2014,14(1):1-5.
• [3]SONG Xiaodan(宋晓丹),KONG Lingfeng(孔令峰),HONG Baomin(洪保民),et al.The status quo of policies and the propposals for the development of coalbed methane gas industry in China[J].Natural Gas Industry(天然气工业),2013,33(2):1-6.
• [4]LUO Pingya(罗平亚).A discussion on how to significantly improve the single-well productivity of CBM gas wells in China[J].Natural Gas Industry(天然气工业),2013,33(6):1-6.
• [5]WANG Yonglong(王永龙),SUN Yuning(孙玉宁),ZHAI Xinxian(翟新献),et al.Study on new drilling technology in soft and outburst SEAM[J].Journal of Mining&Safety Engineering(采矿与安全工程学报),2012,29(2):289-294.
• [6]WANG Yonglong(王永龙),ZHAI Xinxian(翟新献),SUN Yuning(孙玉宁).Reasonable parameters study on grooved drill pipe used in drilling outburst coal seam[J].Journal of China Coal Society(煤炭学报),2011,36(2):304-307.
• [7]ZHANG Xuebo(张学博),JI Zhongchao(姬忠超),GAO Jianliang(高建良).Numerical simulation for the influential factors of the effective drainage radius of boring hole[J].Journal of Safety and Environment(安全与环境学报),2013,13(2):157-160.
• [8]LIU Jian(刘健),LIU Zegong(刘泽功),GAO Kui(高魁).Experimental study on the approach to extracting high-level borehole draining gas in the fully mechanized extrothick coal seam[J].Journal of Safety and Environment(安全与环境学报),2013,13(3):218-222.
• [9]WANG Yonglong(王永龙),SUN Yuning(孙玉宁),ZHAI Xinxian(翟新献),et al.Study on strength matching of prismatic drilling rod when drilling soft and outburst coal seam[J].Journal of Safety Science and Technology(中国安全生产科学技术),2014,10(10):48-54.
• [10]ORTLOFF J E.Rotary drill collar:United States,US3338069A[P].1965-03-11.
• [11]LING Biaocan(凌标灿),DAI Shixin(戴世鑫),CAO Chengping(曹承平),et al.Application of triangular drilling rod to gas drainage borehole drilling in medium soft SEAM[J].Coal Science and Technology(煤炭科学技术),2009,37(10):44-46,111.
• [12]HOU Hong(侯红),LING Biaocan(凌标灿),LUO Wei(罗维),et al.Study on drilling technology with triangular drilling rod in soft and outburst SEAM[J].Coal Science and Technology(煤炭科学技术),2012,40(8):67-70,74.
• [13]GAO Jianliang(高建良),LI Xingxing(李星星),CUI Yakai(崔亚凯).Numerical simulation for airflow and gas distribution regulation in the goaf of mechanized working face[J].Journal of Safety and Environment(安全与环境学报),2013,13(2):164-168.
• [14]ZHANG Desheng(张德胜),SHI Weidong(施卫东),ZHANG Hua(张华),et al.Application of different turbulence models for predicting performance of axial flow pump[J].Transactions of the Chinese Society of Agricultural Engineering(农业工程学报),2012,28(1):66-71,296.
• [15]SUN Yuning(孙玉宁),WANG Yonglong(王永龙),ZHAI Xinxian(翟新献),et al.Analysis on reasons of drilling difficulty in soft and outburst coal seam[J].Journal of China Coal Society(煤炭学报),2012,37(1):117-121.
• [16]YANG Qiongfang(杨琼方),WANG Yongsheng(王永生),ZHANG Zhihong(张志宏).RANS simulation of viscous flow over full appended submarine and field variables validation and vorticity analysis[J].Chinese Journal of Computational Mechanics(计算力学学报),2012,29(4):567-573.
• [17]YANG Qiongfang(杨琼方),WANG Yongsheng(王永生),ZHANG Mingmin(张明敏).Numerical simulation of vorticity field and determination of equivalent acoustic source of flow noises for submarine[J].Journal of Huazhong University of Science and Technology:Natural Science Edition(华中科技大学学报:自然科学版),2012,40(5):64-70.
• [18]WANG Yonglong(王永龙).Research on drilling cuttings movement mechanism and drilling technology in gas drainage borehole(瓦斯抽采钻孔钻屑运移机理与成孔技术研究)[D].Jiaozuo:Henan Polytechnic University,2013.
• [19]SUN Zhenwu(孙振武).Numerical simulation on stress field distribution in partial transformation area of coal seam height[J].Ground Pressure and Strata Control(矿山压力与顶板管理),2003(3):95-97,100.
• [20]WANG Yonglong(王永龙),SUN Yuning(孙玉宁),WANG Zhenfeng(王振锋),et al.Mechanical characteristic of borehole clogging drilling in soft and outburst coal seam[J].Journal of China Coal Society(煤炭学报),2015,40(S1):119-125.