中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2014年
2期
68-70
,共3页
埋钻事故处理%特长套铣筒%钻具组成%泥浆性能%处理过程
埋鑽事故處理%特長套鐉筒%鑽具組成%泥漿性能%處理過程
매찬사고처리%특장투선통%찬구조성%니장성능%처리과정
drill burying accident processing%extra long casing section mill%drilling tools assemblage%mud performance%processing procedure
以往用煤田钻探常用的套铣筒处理一起普通的埋钻事故耗时费力，又容易滋生次生事故。在使用特长套铣筒处理钻孔中的埋钻事故，可以大大缩短处理事故的时间，减少了工人的劳动强度，收到事半功倍的效果。特长套铣筒采用石油专用的带丝扣套管，每根套管长度12m左右，套管之间用管箍连接，总长度一般在80～100m，套铣筒的下端接套铣筒钻头。套铣筒的规格根据孔内事故钻具的最大外径确定，通常比事故钻具最大外径大两个级差，而又比孔径小两个级差。套铣筒钻头的规格应该比事故钻头的规格小一级或等于事故钻头的外径，钻头合金宜采用孕镶粉未合金或其它抗耐磨合金。山西某煤矿送料孔钻探到497m时埋钻，用普通方法处理上部272m钻具用时24d，改用特长套铣筒处理剩余225m钻具仅用时10d，体现了高效率的特点，为大孔径勘探孔埋钻事故的处理，找到了一条比较快速的处理方法。
以往用煤田鑽探常用的套鐉筒處理一起普通的埋鑽事故耗時費力，又容易滋生次生事故。在使用特長套鐉筒處理鑽孔中的埋鑽事故，可以大大縮短處理事故的時間，減少瞭工人的勞動彊度，收到事半功倍的效果。特長套鐉筒採用石油專用的帶絲釦套管，每根套管長度12m左右，套管之間用管箍連接，總長度一般在80～100m，套鐉筒的下耑接套鐉筒鑽頭。套鐉筒的規格根據孔內事故鑽具的最大外徑確定，通常比事故鑽具最大外徑大兩箇級差，而又比孔徑小兩箇級差。套鐉筒鑽頭的規格應該比事故鑽頭的規格小一級或等于事故鑽頭的外徑，鑽頭閤金宜採用孕鑲粉未閤金或其它抗耐磨閤金。山西某煤礦送料孔鑽探到497m時埋鑽，用普通方法處理上部272m鑽具用時24d，改用特長套鐉筒處理剩餘225m鑽具僅用時10d，體現瞭高效率的特點，為大孔徑勘探孔埋鑽事故的處理，找到瞭一條比較快速的處理方法。
이왕용매전찬탐상용적투선통처리일기보통적매찬사고모시비력，우용역자생차생사고。재사용특장투선통처리찬공중적매찬사고，가이대대축단처리사고적시간，감소료공인적노동강도，수도사반공배적효과。특장투선통채용석유전용적대사구투관，매근투관장도12m좌우，투관지간용관고련접，총장도일반재80～100m，투선통적하단접투선통찬두。투선통적규격근거공내사고찬구적최대외경학정，통상비사고찬구최대외경대량개급차，이우비공경소량개급차。투선통찬두적규격응해비사고찬두적규격소일급혹등우사고찬두적외경，찬두합금의채용잉양분미합금혹기타항내마합금。산서모매광송료공찬탐도497m시매찬，용보통방법처리상부272m찬구용시24d，개용특장투선통처리잉여225m찬구부용시10d，체현료고효솔적특점，위대공경감탐공매찬사고적처리，조도료일조비교쾌속적처리방법。
In the past, using frequently-used casing section mill to deal with a common drill burying accident in coalfield drilling can be a long and hard work and secondary accident tend to happen. While the using of extra long casing section mill can greatly shorten processing time and labor intensity, thus half the work with doubled results. The extra long casing section mill uses special oil screw-thread casing, every casing length about 12m, casings are linked by hoops, total length usually 80~100m, lower end linked mill bit. Specification of casing section mill is determined according to maximum outer diameter of down-hole accident processing tools, com-monly two graded differences larger than that, and two graded differences smaller than borehole diameter. Specification of casing sec-tion mill bit should be one grade smaller than accident processing bit or equal to outer diameter of accident processing bit;bit alloy should use impregnated powder alloy or other wear resistant alloy. Down to 497m, a drill burying accident happened during the drilling of a feeding hole in a Shanxi coalmine, using the common method to process upper 272m tools cost 24 days, converted to extra long cas-ing section mill to process remaining 225m cost only 10 days, thus embodied the high efficiency, and a fast-speed way to process large diameter exploration borehole drill burying accident has found.
