贝克休斯随钻方位电阻率测井

©2010BakerHughesIncorporated.AllRightsReserved.1AziTrak–随钻方位电阻率测井©2010BakerHughesIncorporated.AllRightsReserved.2地质导向中的挑战在河道砂体中导向多传播电阻率2MHz相位差多传播电阻率400kHz衰减方位传播电阻率泥岩/煤层/粉砂岩Rt=1-3ohmm河道砂体油层Rt=30ohmm©2010BakerHughesIncorporated.AllRightsReserved.3多传播电阻率工具响应模型但怎么知道边界在哪个方位?曲线分离表明工具正接近地层边界泥岩泥岩模拟OnTrak仪器响应AziTrak™--随钻深探测方位电阻率•提供用于地质导向（层界面的探测）的深探测方位电阻率及常规电阻率、自然伽玛和伽玛成像以及方位数据•提供方位并探测工具与层界面的距离（最大距离5米）•意味着：降低实际井眼脱离油藏中目的层的风险©2010BakerHughesIncorporated.AllRightsReserved.4©2010BakerHughesIncorporated.AllRightsReserved.5AziTrak™-层界面探测在OnTrak工具的基础上增加2个垂直于工具的接收线圈，则当工具旋转时可测量井周环境的方位信息©2010BakerHughesIncorporated.AllRightsReserved.6泥岩钻进方向的确定BottomTopTop泥岩层从上方靠近井眼泥岩层从下方靠近井眼泥岩©2010BakerHughesIncorporated.AllRightsReserved.7泥岩薄层识别BottomTopTop井眼©2010BakerHughesIncorporated.AllRightsReserved.8Real-timeAziTrakimaging.Theanswersareclear.•Wellexitingpayzone•WellenteringpayzoneScenario1Scenario2ReservoirNavigationServices©2010BakerHughesIncorporated.AllRightsReserved.9Real-timeAziTrakimaging.Theanswersareclear.•Landwellnearbottomofpayzone•LandwellnearroofofpayzoneScenario3Scenario4ReservoirNavigationServices实时显示0180270901354531522515306075120105150165195210240255285330345300点显示趋近地层的方向该图例中，趋近于工具的右前方外层红点：最新的数据点©2010BakerHughesIncorporated.AllRightsReserved.10模拟的AziTrak工具响应Wellpath1ohm-m1ohm-m10ohm-mDeepResistivityImage1ohm-m10ohm-mSignalStrengthTopTopBottomTargetDirectionBottomTopTopDepthofDetectionDistancetoBed©2010BakerHughesIncorporated.AllRightsReserved.11©2010BakerHughesIncorporated.AllRightsReserved.12现场数据:在油藏中钻进正接近泥岩层RealTimeSignalOnTrakResistivityGammaRayImageAz.OnTrakImageAPR16sectors从上接近泥岩层(深色)信号强度变强top–bottom-toptop–bottom-top伽玛没有变化电阻率变小:正接近导电性地层©2010BakerHughesIncorporated.AllRightsReserved.13RealTimeSignalOnTrakResistivityGammaRayImageAz.OnTrakImageAPR16sectorstop–bottom-toptop–bottom-top信号变弱:正钻离泥岩现场数据:在油藏中钻进正远离泥岩层©2010BakerHughesIncorporated.AllRightsReserved.14现场数据:在油藏中钻进再次接近泥岩层RealTimeSignalRealTimeSignalOnTrakResistivityGammaRayImageAz.OnTrakImageAPR16sectorstop–bottom-toptop–bottom-top伽玛没变化曲线轻微的分开信号强度变强:再次接近泥岩层©2010BakerHughesIncorporated.AllRightsReserved.15现场数据:进入泥岩–85米的预警RealTimeSignalRealTimeSignalOnTrakResistivityGammaRayImageAz.OnTrakImageAPR16sectorstop–bottom-toptop–bottom-top85meterwarningShaleSand在地层边界处信号最强3ohmm30ohmmProposedOWC@1716mTVDNowatersignaldetectedintherangeofspecifiedtool’sDOIAziTrakTM应用一：边界距离计算Thehigh-endserviceCNOOC©2010BakerHughesIncorporated.AllRightsReserved.17CHEVRONWELLINTHEUKSECTOROFTHENORTHSEAAziTrakTM应用二：顶面跟踪Thehigh-endservice©2010BakerHughesIncorporated.AllRightsReserved.18AziTrakTM应用二：顶面跟踪工具平均距顶距离0.5m之内©2010BakerHughesIncorporated.AllRightsReserved.19AziTrakTM应用三：危险方向指示及距离计算©2010BakerHughesIncorporated.AllRightsReserved.20AchievementsAtotalof395mof8½sectionwith258mnetpaywasdrilledsincelandingpointProposedGOC@-1250mSSLP@1905mMDGasCapdisappeared?ChannelSandOneChannelSandTwoShaleBreakAziTrakTM应用四：双边界识别双边界例子，上下均为泥岩©2010BakerHughesIncorporated.AllRightsReserved.21AziTrakTM应用四：双边界识别ActualAPRImageNeutral/DensityResistivityGammaRaySignalStrength/DirectionD2Binterpretation645m水平段，工具平均距油顶距离0.4m©2010BakerHughesIncorporated.AllRightsReserved.22Summary•AziTrakprovidesdeep-readingazimuthalresistivityreadingsin16sectorsaroundtheborehole•AziTrakisahighlevelRNSservice,allowingthewellboretobepositionedacertaindistancefromaboundary•Pre-jobplanningandmodelingofanticipatedreadingsareessentialtogetthemostvaluefromtheservice•Deepestboundarydetectionisavailablewhentheboundaryformationhaslowresistivityandthetargetformationhashighresistivity•Strongcompetitionfromotherservicecompanies23©2010BakerHughesIncorporated.AllRightsReserved.23487AziTrakToolDeployments©2010BakerHughesIncorporated.AllRightsReserved.24谢谢！