适用于破碎地层的新型单动双管钻具

第42卷第1期煤田地质与勘探Vol.42No.12014年1月COALGEOLOGY&EXPLORATIONJan.2014收稿日期:2012-10-16基金项目:(07JJ6089)作者简介:(1965—).文章编号:1001-1986(2014)01-0087-03适用于破碎地层的新型单动双管钻具杨昌杰1，张绍和2,3，苏宏岸2,3，赵冲全1，吴昊1(1.中国有色金属工业昆明勘察设计研究院，云南昆明650051；2.中南大学有色金属成矿预测教育部重点实验室，湖南长沙410083；3.中南大学地球科学与信息物理学院，湖南长沙410083):针对极度破碎地层取心率不高问题，设计并制造了一种新型单动双管钻具。该套金刚石单动双管钻具由钻杆接头、单动装置、内管、外管、卡心装置和超前侧喷钻头等组成。通过在云南羊拉矿区试验，能有效地提高破碎地层岩心采取率。：破碎地层；单动双管钻具；取心率：P633.5：ADOI:10.3969/j.issn.1001-1986.2014.01.021Theapplicationtestofthenewdouble-barreledandsingle-actingcoringtoolinfracturedformationYANGChangjie1,ZHANGShaohe2,3,SUHong’an2,3,ZHAOChongquan1,WUHao1(1.KunmingProspectingDesignInstituteofChinaNonferrousMetalsIndustry,Kunming650051,China;2.TheMinistryofEducationKeyLaboratoryofNon-ferrousMetaloreForecast,CentralSouthUniversity,Changsha410083,China;3.CollegeofGeologyandEnvironmentalEngineering,CentralSouthUniversity,Changsha410083,China)Abstract:Aimingattheproblemoflowcoringrecoveryrateinextremelyfracturedformations,thepaperdesignsanewdouble-barreledandsingle-actingcoringtool,whichcomprisestooljoint,singleactingmotion,innerpipe,outerpipe,coredeviceandadvanceboreandlateraljetbitetc.ThroughtheapplicationtestinYanglamine,itcangreatlyimprovethecoringrecoveryrateinextremelyfracturedformations.Keywords:fracturedformation;double-barreledandsingle-actingcoringtool;coringrecoveryrate[1][2]1新型单动双管钻具的设计1.11[3][4][5-6][7-8]1—2—3—4—5—6—7—1Fig.1Thenewdouble-barreledandsingle-actingcoringtool·88·煤田地质与勘探第42卷1.2++a.b.c.++32现场试验32502.12.2ZDY900SG(MKG-5S)BW150500r/min10kN110L/min2.3CK23-9CK3707-3CK23-952°105m16.5~18.5m26.5~29m55.5~60m60mCK3707-345°115m9191mm75mm91mm65%表1新设计单动双管钻具在破碎地层中的取心情况Table1Thetestingdataofthenewdouble-barreledandsingle-actingcoringtool/m/m/m/%1CK23-916.75~17.981.231.04852CK23-927.15~28.341.191.17983CK23-956.46~57.681.221.00824CK23-958.65~59.590.940.82875CK23-965.38~67.421.852.04916CK3707-319.29~20.531.311.24957CK3707-346.49~47.831.341.10828CK3707-347.83~49.051.221.07889CK3707-350.41~51.801.011.0110011.3110.499311.31m10.49m93%a.(2)93%(65%)30%2Fig.2Comparisonofcoringinfracturedformationbythenewdesignedtoolandtheoriginalprocess第1期杨昌杰等:适用于破碎地层的新型单动双管钻具·89·b.(3)3Fig.3Comparisonofcoringinsoftlayerbythenewdesignedtoolandtheoriginalprocessc.[9-10]1.2m3试验中反映出来的问题及改进方案a.b.[7]4结论a.b.c.参考文献[1].[M].1990.[2].[J].201341(3)90−93.[3].[J].2001(1)157−158.[4].[J].2010(6)32−35.[5].[J].200945(2)112−114.[6].QXG[J].201240(6)82−84.[7].[M].2005.[8].Pro/EPDC[J].201240(2)91−93.[9].[J].201037(3)21−23.[10].[J].200629(3)26−27.