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ID:51413986
大小:4.01 MB
页数:7页
时间:2020-03-23
《切削齿型结构对金刚石钻头钻进性能影响的仿真分析.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、笫42卷第3探矿l丁程(岩土钻掘工程)Vn1.42No.32015q-3门ExplorationEngineering(Rock&SoilDrillingandTunneling)Mar.2015:69—75切削齿型结构对金刚石钻头钻进性能影响的仿真分析王佳亮,张绍和,周怀发,杨汉军(1.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;2.中南大学地球科学与信息物理学院,湖南长沙410083;3.中国石化青岛液化气天然气有限责任公司,山东青岛266400)摘要:于有限分析软件ANSYS/LS—DYNA,建了孕镶金刚石钻头的三维有限已模,研究了钻头切削齿结构埘钻进性能的影
2、响并进行现场试验验证,提出r一种基于Image—ProPlus的鹰力面积分布对比方式。结果表明:同心环型钻头住钻进卡JJ期沿旋转方向切削齿前缘出现应力集中现象,花☆钻头未出现明显的应力集中;2种齿型钻头钻进后期均会d3、nceofCuttingTeethStructureonDrillingEficiencyofImpregnatedDiamondbit/WANGJia—liang。。,ZHANGShao一。。,ZHOUHuai扣,YANGHan-jun(1.TheMinistryofEducationKeyLaboratoryofNun—ferrousMetal()reForecast,ChangshaHunan410083,China;2.SchoolofGeosciencesandInfo—Physics,CentralSouthUniveJ~ity,ChangshaHunan410083,Ch4、ina;3.QingdaoLiquefiedNaturalGasLimitedLiabilityCompany,QingdaoShan一(1ong255400,China)Abstract:Three—dimensionalfiniteelementmodelofimpregnateddiamondbitWaSestablishedbasedonfiniteelementanaly—sissoftwareANSYS/1—DYNAandtheinfluenceofcuttingteethstructureondrillingeficiencywasanalyzedwiththefield5、testvel‘ificationcarryitagout:auewmethodfi)rstressareacon6、parisonbasedonImage—ProPluswaspresent.TheresultSshowthatstress(‘tmcentrationappearsf()rconcentricringcuttingteethstructureatthefrontedgeofcuttingteethalongthero—tationdirectionininitialdrillingstage,whilenonohvi()USstressconcentrationappe7、arstbrsawteethbit.Butdifferentdegreesofstressconcentrationappearatinnerandouterdiameteredgesneat"thenozzlepartforthesetwokindsofbitsinlatedrillingslage,whichmayleadtoabnormalwear.Thesawcuttingteethbitsaremoreefficientthanconcentricringones,butthebitservicelifeisslightlylower.Keywords:IS—I)YNA;im8、pregmateddiamondlilt;cuttingteethstructure;computersimulation;rockfragmentationmecha一近年来,我国加大厂矿产资源的勘探力度,找矿重要的现实意义。深度已从过去浅部、中深部转向深部勘探(1000m以本文利用ANSYS/LS—DYNA有限元软件对不深),以寻找隐伏矿j深部矿的“第二找矿空间”为主同切削齿型结构的钻头进行钻进模拟分析,对比了各要【_{标。深孔钻进时常采用
3、nceofCuttingTeethStructureonDrillingEficiencyofImpregnatedDiamondbit/WANGJia—liang。。,ZHANGShao一。。,ZHOUHuai扣,YANGHan-jun(1.TheMinistryofEducationKeyLaboratoryofNun—ferrousMetal()reForecast,ChangshaHunan410083,China;2.SchoolofGeosciencesandInfo—Physics,CentralSouthUniveJ~ity,ChangshaHunan410083,Ch
4、ina;3.QingdaoLiquefiedNaturalGasLimitedLiabilityCompany,QingdaoShan一(1ong255400,China)Abstract:Three—dimensionalfiniteelementmodelofimpregnateddiamondbitWaSestablishedbasedonfiniteelementanaly—sissoftwareANSYS/1—DYNAandtheinfluenceofcuttingteethstructureondrillingeficiencywasanalyzedwiththefield
5、testvel‘ificationcarryitagout:auewmethodfi)rstressareacon
6、parisonbasedonImage—ProPluswaspresent.TheresultSshowthatstress(‘tmcentrationappearsf()rconcentricringcuttingteethstructureatthefrontedgeofcuttingteethalongthero—tationdirectionininitialdrillingstage,whilenonohvi()USstressconcentrationappe
7、arstbrsawteethbit.Butdifferentdegreesofstressconcentrationappearatinnerandouterdiameteredgesneat"thenozzlepartforthesetwokindsofbitsinlatedrillingslage,whichmayleadtoabnormalwear.Thesawcuttingteethbitsaremoreefficientthanconcentricringones,butthebitservicelifeisslightlylower.Keywords:IS—I)YNA;im
8、pregmateddiamondlilt;cuttingteethstructure;computersimulation;rockfragmentationmecha一近年来,我国加大厂矿产资源的勘探力度,找矿重要的现实意义。深度已从过去浅部、中深部转向深部勘探(1000m以本文利用ANSYS/LS—DYNA有限元软件对不深),以寻找隐伏矿j深部矿的“第二找矿空间”为主同切削齿型结构的钻头进行钻进模拟分析,对比了各要【_{标。深孔钻进时常采用
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