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《尖齿状金刚石复合片钻头在油页岩矿区的钻进实验.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、探矿工程(岩土钻掘工程)2011年第38卷第8期尖齿状金刚石复合片钻头在油页岩矿区的钻进实验张献振,刘宝昌,,卢彬,赵生庆(1.吉林大学建设工程学院,吉林长春130026;2.吉林大学工程仿生教育部重点实验室,吉林长春130025;3.吉林大学超硬材料国家重点实验室,吉林长春130012;4.吉林省地质工程勘察院,吉林长春130012;5.吉林省地矿勘察设计研究院,吉林长春130061)摘要:松辽盆地青山口组和嫩汀组含油页岩系,夹有数十层白云岩透镜体或条带。在对该油页岩系进行钻探时,由于经常遇到硬度较大的白云岩层,使用普通的硬质合金钻头不仅进尺极其缓慢,而且钻头损坏严
2、重,寿命短。为解决此钻探难题,研制开发具有高耐磨性和穿透能力强的钻头势在必行。为此,研发了尖齿状金刚石复合片钻头,并进行了现场钻进实验。结果表明,这种钻头在含白云岩层的油页岩地层钻进时,不仅钻进速度高,而且具有高耐磨性、寿命长,其综合技术经济指标远远优于常规硬质合金钻头。关键词:松辽盆地;油页岩;白云岩层;钻探;尖齿状金刚石复合片钻头中图分类号:P634.41文献标识码:A文章编号:1672—7428(2011)08—0064—04DrillingExperimentsofTeeth-shapedPDCBitinShenjingziOilShaleMiningArea
3、ofSongLiaoBasin/ZHANGXian—zhen,LIUBuo—chang’’,LUBin,ZHAOSheng—qing(1.CollegeofConstructionEngineering,JilinUniversity,ChangchunJilin130026,China;2.KeyLaboratoryofBionicEngineering,JilinUniversity,MinistryofEducation,Chang—chunJilin130025,China;3.NationalKeyLaboratoryofSuperhardMaterials
4、,JilinUniversity,ChangchunJilin130012,China;4.JilinInvestigationandDesignInstituteofGeologyandMinerals,ChangchunJilin130061,China;5.Geo·engi—neeringInvestigationInstituteofJilinProvince,ChangchunJilin130012,China)Abstract:Thereareoftendozensoflayersofdolomitebodyorbandsembeddedinoilshal
5、eformationinQingshankouandNenjianggroupatSongLiaobasin.Whiledrillinginabovementionedoilshaleformations,dolomiteinterlayerswithrela·tivelyhighhardnesswereoftenencountered.Ifordinarytungstencarbidecutterdrillingbitwasused,notonlythefootagewastooslowindrillingprocess,butalsothebitwasseriou
6、slydamaged.Tosolveabovedrillingproblems,thedevelopmentofnewdrillingbitwithhighwearresistanceandhighpenetrationabilitywaseagerlyneeded.Inthispaper,anewtypeofteeth—shapedPDCbitwasdesignedandmanufactured.Fielddrillingexperimentsusingtheseteeth—shapedPDCbitswereconductedandtheirdrillingperf
7、ormanceswerecomparedwiththoseoftungstencarbidebits.Theresultsindicatedthatthenewteeth—shapedPDCbitdemonstratedhighrateofpenetration,highweal"resistanceandlongservicelifewhiledrillinginoilshaleformationcontainingdolomiteinterlayer.Thetechnicalandeconomicalindexofteeth-shapedPDCd
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