牙轮钻头磨损分级体系课件

牙轮钻头磨损分級体系2019年12月18日星期牙轮钻头磨损分級体系1八参数磨损分级体系TBGREMARKS234678CUTTINGSTRUCTUREBGREMARKSInnerOuterDullLoca-Brng.GageOtherReasonRows:RowsChar.itionSeal1/16DullPulled)()(D)(L)(B)(G)()(R)内排一外排一磨损特征一部位一一密封一保径一其它一起钻原因八参数磨损分级体系2CuttingStructure---Inner&Outer切削结构(T)一内排(Ⅰ)和外排O)TOOTHHEIGHTMEASUREMENTT314T5T2T6T7TO-NEWT8外排(O)排齿磨损总和/内排齿教内排(外齿磨总和/外排齿数CuttingStructure---Inner&Out3CuttingStructureDullCharacteristicsandLocation铣齿钻头切削结构的磨损特征和部位HeelRHeelrowInnerrowConventionalCuttingStructureTrucutTMCuttingStructureCuttingStructureDullCharact4CuttingStructureDullCharacteristicsandLocation镶齿钻头切削结构的磨损特征和部位HeelRowInnerRowConventionalCuttingStructureTrucutCuttingStructureCuttingStructureDullCharact5CuttingStructureDullCharacteristics切削结构的磨损特征BF-BondFailureLT·LostTeeth/CuttersBT-BrokenTeeth/CuttersPN-PluggedNozzle/FlowBU-BalledUpPassageCR-CoredRo·RingoutCT-ChippedTeeth/CutterWo-WashedOutBitDL-CutterDelaminationWT-WornTeeth/CuttersER-ErosionFC-FlatCrestedWearHC-HeatCheckingNO-NoDullCharacteristicJD·JunkDamageNR-NotRerunableLM-LostMatrixRR-RerunableLN-LostNozzleCuttingStructureDullCharact6CuttingstructureDullCharacteristicsandLocation切削结构的磨损特征和部位DULLCHARACTERISTICSLOCATION.ROLLERCONEBITSBC-BrokenConeLT-LostTeeth/Cutters#BF-BondFailureNO-NoDullN一NoserowConetBT-BrakenTeethCharacteristM-MiddleRowCutlersOC-OffCenterWearG-GaugeRovBU-BalledUpBitPB-PinchedBitA-AllRowsCC-CrackedConePN-PluggedNozzleCD-ConeDraggedFlowPassageCI-ConeInterferenceRG-RoundedGaugeCR-Cored#RO-RingoutCT-ChippedTeeth/SD-ShirttailDamage55-Self-SharpeningWaER-ErosionFC-FlatCrestedWearTRN=NosethecentermostcuttingelementsofthebitHC-HeatCheckingID-lunkDamageM=Middle-thecuttingelementsbetweenthenoseandsLC-LostConeCuttersLN-Lostnozzlenegauge*Showconeor#'sunderlocation4NotusedforrollerconebitsCuttingstructureDullCharact71.Brokencone(BC)-牙轮断裂原因:措施1.由牙轮裂纹形成的1.规范钻井操作2.冲击载荷过大2.按推荐的钻井液要求作业3.井下落物4.牙轮壳体变薄一冲蚀,偏磨5.氢脆,腐蚀1.Brokencone(BC)-牙轮断裂82Brokenteeth(BT)-断齿原因措施1.选型不合理一钻头偏软1.选硬型号钻头;齿出露高度低2.钻压过大;转速过高;硬夹层;2.合理钻压和转速;使用减震器3.井底造型不得当3.小钻压,低转速,>6英寸4.冲击载荷过大;操作不当4.规范钻井操作5.牙轮相碰;热龟裂;冲蚀等5.调整钻井条件2Brokenteeth(BT)-断齿93.BalledUp(BU)-泥包原因措施1.粘性地层(水解性粘土等);针对粘性地层的钻井措施2.水力参数不合理2.优化水力参数3.喷嘴组合不合理3.高比水马力;中心喷嘴;流场4.操作不当(钻压大,井眼清洗》;4.规范钻井操作5.钻头选型不合理;泥浆性能不佳.5.合理钻头选型;改善泥浆性能3.BalledUp(BU)-泥包10牙轮钻头磨损分级体系课件11牙轮钻头磨损分级体系课件12牙轮钻头磨损分级体系课件13牙轮钻头磨损分级体系课件14牙轮钻头磨损分级体系课件15牙轮钻头磨损分级体系课件16牙轮钻头磨损分级体系课件17牙轮钻头磨损分级体系课件18牙轮钻头磨损分级体系课件19牙轮钻头磨损分级体系课件20牙轮钻头磨损分级体系课件21牙轮钻头磨损分级体系课件22牙轮钻头磨损分级体系课件23牙轮钻头磨损分级体系课件24牙轮钻头磨损分级体系课件25牙轮钻头磨损分级体系课