童亭煤矿钻探取心施工方法
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摘要
通过介绍和分析安徽省童亭煤矿采空区的各段地层特性、岩性特征,指出了钻进和取心过程中的控制难点,采用了加大孔径结构、优化钻具组合及强化泥浆性能维护等技术措施;针对极其严重的缩径现象,采用大开小下的方法,克服了缩径造成的套管下放难题;采用加稠水泥浆灌注方法成功处理了114mm套管在采空区段断裂问题和地层严重破碎、漏水问题,最终顺利完成了7个煤系地层钻孔施工,取得了良好的经济社会效益。
By introducing and analyzing the characteristics of strata and lithology in the goaf area of the various sections of the Tongting coal mine in Anhui Province,the difficulties are pointed out in the process of drilling and coring.The relevant technical measures such as enlarging the borehole structure,optimizing the drilling tool combination,strengthening the mud performance maintenance were adopted.To deal with serious wellbore shrinkage,the borehole diameter was increased with reduced casing diameter to overcome the difficulties caused by shrinkage when lowering casing.Thickened cement grout was successfully used to deal with breakage of the114 mm casing,serious stratum fractures and water leakage problems in the goaf.Finally seven boreholes were successfully completed in coal strata,which achieved good economic and social benefits.
By introducing and analyzing the characteristics of strata and lithology in the goaf area of the various sections of the Tongting coal mine in Anhui Province,the difficulties are pointed out in the process of drilling and coring.The relevant technical measures such as enlarging the borehole structure,optimizing the drilling tool combination,strengthening the mud performance maintenance were adopted.To deal with serious wellbore shrinkage,the borehole diameter was increased with reduced casing diameter to overcome the difficulties caused by shrinkage when lowering casing.Thickened cement grout was successfully used to deal with breakage of the114 mm casing,serious stratum fractures and water leakage problems in the goaf.Finally seven boreholes were successfully completed in coal strata,which achieved good economic and social benefits.
引文
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[8]王安德.试析煤田绳索取心钻进的孔内安全问题[J].煤田地质与勘探,1986,(6):68-70.WANG Ande.Analysis on the safety problem of the hole in the coalfield wire-line core drilling[J].Coal Geology&Exploration,1986,(6):68-70.
[9]石伯彪.绳索取心钻进孔斜及其防斜探讨[J].西部探矿工程,1990,32(3):69-80.SHI Bobiao.Discussion on the borehole deviation and deviation prevention of wire-line core drilling[J].West-China Exploration Engineering,1990,32(3):69-80.
[10]袁明文,姚改委.对提高深部钻探取芯质量的思考和建议[J].科技创业月刊,2015,28(7):102-104.YUAN Mingwen,YAO Gaiwei.Thoughts and suggestions on improving coring quality in deep drilling[J].Pioneering with Science&Technology Monthly,2015,28(7):102-104.
[11]肖海龙.泥浆在钻井中的使用一般原则及现场调配[J].城市地质,2016,11(4):112-114.XIAO Hailong.General using principles and in-situ confecting method of drilling mud[J].Urban Geology,2016,11(4):112-114.
[2]于孝民,杨春光,董国明,等.唐山市第一眼蓟县系地热井钻探及成井技术[J].探矿工程(岩土钻掘工程),2014,41(2):41-44.YU Xiaomin,YANG Chunguang,DONG Guoming,et al.Drilling and completion technology in the first geothermal well construction in Jixian system in Tangshan[J].Exploration Engineering(Rock&Soil Drilling and Tunneling),2014,41(2):41-44.
[3]邢士学.煤田钻探绳索取芯技术探讨[J].煤炭技术,2008,27(9):154-155.XING Shixue.Discussion of core-drilling technology of wireline coring in coalfield exploration[J].Coal Technology,2008,27(9):154-155.
[4]孔卫开.绳索取芯技术在深孔钻探施工中的应用[J].西部探矿工程,2012,24(7):29-32,35.KONG Weikai.Application of wire coring technology in deep hole drilling construction[J].West-China Exploration Engineering,2012,24(7):29-32,35.
[5]张鸿飞.S95绳索取心钻进工艺在极倾斜地层中的施工应用[J].地质装备,2017,18(3):24-28.ZHANG Hongfei.Construction application of S95 wire-line core drilling technology in extremely inclined formation[J].E-quipment for Geotechnical Engineering,2017,18(3):24-28.
[6]王有东.绳索取心钻进技术在煤田勘探超深孔施工中的应用[J].中国煤炭地质,2009,21(4):67-69,72.WANG Youdong.Application of wire-line core drilling in coalfield ultra deep boreholes[J].Coal Geology of China,2009,21(4):67-69,72.
[7]张波.钾基聚合物抑制冲洗液在榆横矿区煤田地质绳索取心钻探工艺中的应用[J].资源信息与工程,2017,32(6):60-62.ZHANG Bo.Application of potassium-based polymer suppression flushing fluid in coalfield geological wire coring drilling technology in Yuheng mining area[J].Nonferrous Metals Abstract,2017,32(6):60-62.
[8]王安德.试析煤田绳索取心钻进的孔内安全问题[J].煤田地质与勘探,1986,(6):68-70.WANG Ande.Analysis on the safety problem of the hole in the coalfield wire-line core drilling[J].Coal Geology&Exploration,1986,(6):68-70.
[9]石伯彪.绳索取心钻进孔斜及其防斜探讨[J].西部探矿工程,1990,32(3):69-80.SHI Bobiao.Discussion on the borehole deviation and deviation prevention of wire-line core drilling[J].West-China Exploration Engineering,1990,32(3):69-80.
[10]袁明文,姚改委.对提高深部钻探取芯质量的思考和建议[J].科技创业月刊,2015,28(7):102-104.YUAN Mingwen,YAO Gaiwei.Thoughts and suggestions on improving coring quality in deep drilling[J].Pioneering with Science&Technology Monthly,2015,28(7):102-104.
[11]肖海龙.泥浆在钻井中的使用一般原则及现场调配[J].城市地质,2016,11(4):112-114.XIAO Hailong.General using principles and in-situ confecting method of drilling mud[J].Urban Geology,2016,11(4):112-114.