大直径定向长钻孔用73mm钻杆接头设计及应用

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CoalMineMachineryVol.38No.05May.20173805201705doi:10.13436/j.mkjx.2017050440,准73mm。,,1°/m、、,;,,,,,;,5,;,,,,。,、、,,。1,80%,、,。1.1,,MT/T521-2006,,,。,,,、1,、2,(1)。,:(1),,,,;(2),准73mm(,710077):,,,W-038R,、W-038RV-040,,W-038RV-040,,;,W-038R22000Nm,V-0401.5;,,W-038RV-04018%。:;;;:TD41:A:1003-0794(2017)05-0113-04JointDesignandApplicationof准73mmDrillRodforLargeDiameterandDirectionalLongBoreholeConstructionDONGMeng-meng(Xi’anResearchInstituteCo.,Ltd.,ChinaCoalTechnologyandEngineeringGroup,Xi’an710077,China)Abstract:Accordingtothefailuresuchasfracture、fasteningiseasytoappearwhiledrillinglargediameteranddirectionallongboreholeusingconventionalpipe,apremiumthreadwithdoubleshoulderwhichcalledW-038Risdesignedbyoptimizingjointmaterialandtakingexamplebyoilpipelinejointdesignexperience.ThispapercontrastsW-038RjointwithV-040jointthroughFEA、laboratorytestandfieldtest.FEAresultsshowthatW-038RjointstressdistributionissignificantlysuperiortoV-040joint,theformercansatisfytheuserequirement,whilethelatterconnectionfailurehappens;LaboratoryteststurnoutthatW-038Rjointstatictorsioncapacityis1.5timesV-040joint;FieldtestsshowthatthedrillingpipeaccidentrateofW-038Rjointisabout0.26/kmwhiledrillinglargediameteranddirectionalborehole,about18%ofV-040jointundersamedrillingcondition.Keywords:largediameterborehole;directionallongborehole;jointdesign;FEA1133805Vol.38No.05准73mm———,,;(3),;(4),2,。11.2,准73mmV-040(2),,,(≥6000Nm)(≥准153mm),,,+,,,3W-038R。21。(a)(b)2V-040(a)(b)3W-038R122W-038R,,,V-040W-038R。2.12.1.1,:(1),;(2);(3),,4。42.1.22,,,;,、。,Q1Q2,3m,Q1,Q2。(1),,Q1=48EJZymaxl3(1)l———,m;ymax———,m;E———,E=2.1×108kN/m2;JZ———,m4。,1°/m,R=57.3m,ymax=R-R2-(l/2)2姨=20mm(2)(2)ymax=20mm,(1)Q1=4kN。(2)①,,,,。CapkncobV-040W-038R/mm5.0881∶41∶6/mm2.9933.09560°5.082.993R0.5085.087°7′30″θAY60°7°7′30″2.993R0.5083.09583.0958yXFQLaBcQf-MfθFMf114lw=3.65ω-0.5gnzcosα0.25(gnzcosα)2+2.68EJzgnqw2姨姨=85.7m(3)ω———,rad/s;q———,q=0.12kN/m;α———,α=0;z———,,,z=60m。②Q2,,,,(1)Q2′=0.14kN。,,,,Q2Q2′,σw=MWz=Q2′lw2Wz=Q2l2Wz(4)(4)Q2=Q2′lwl(5)(5)Q2=4kN。,准73mmQ1Q2,Q=Q1+Q2=8kN。2.22,,5。42CrMo,26CrMo。2(a)v-040(b)W-038R52.3,,M=6000Nm,Q=8kN。,,6000Nm,50mm,。Frictional,0.15,Friction-less。,,。2.4(1)V-040V-040,2,2307.7MPa(),;600MPa,,400~600MPa;300MPa,6(a)。(2)W-038RW-038R,,990MPa();400~850MPa,800MPa,400~850MPa;300MPa,6(b)。(a)v-040(b)W-038R6(3)2,,2(V-0409,W-038R6),3,,,7。3805Vol.38No.05准73mm———E/MPaμδs/MPaδ5/%42CrMo2.07e110.32952≥1226CrMo1.93e110.3807≥12115(a)V-040(b)W-038R727:①,22#,;②V-040,2#1549MPa,6#249MPa。1#2#,,,,;③W-038R,V-040,,。,W-038R,V-040,6000Nm,1°/m(8kN)。,,2°/3m,12。3,CM140-352。,V-04014000Nm,;W-038R22000Nm,。W-038RV-04050%。42014920155,V-040准73mmW-038R准73mmZDY12000LD准153mm15,2°/3m,5°/3m,3。33,V-040准73mm7,2776m,4,1.44/km;W-038R准73mm8,3891m,1,0.26/km,18%。5(1),W-038R,W-038RV-040,V-040;(2)W-038R,22000Nm,V-04050%;(3),准153mm,W-038R准73mmV-040准73mm18%,,;(4),W-038R,,2°/3m。:[1],,,.[J].,2005,33(5):19-22.[2],.[J].,2001,29(3):13-15.[3].[J].,2010,38(8):63-65+69.[4],,.[J].,2012,40(6):51-53+57.[5].[D].,2007.:(1983-),,,,,:dongmeng-meng@cctegxian.com.::2017-03-143805Vol.38No.05准73mm———准73mmV-040准73mmW-038R530123#530135#5302216#530228#123456712341231/m408414783400438444450438438438438558558558513(°/3m)2.453.372.23.874.113.43.093.893.52.72.862.982.813.065.11/m144405783400324444276438438438438558558558465(2mm)123456789/MPa16001400120010008006004002000123456/MPa8006004002000116

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