提高声波测井仪器性能的关键——换能器的频率特征

1233(1)(2)(3),,,..,2003,17(4):57,,,,,,,,,,1970,1992(),:25709610kHz20kHz1/3m1/6m(300s/m),1/6m1/12m,(0.11m),,[12],(),,;(),,,,,,,,,,,--,,,150,5174©1995-2007TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,113,37,0.25kHz,0.5kHz17.5kHz,17.3kHz,18kHz,0.7kHz,,,,,1,,(a)(b)()1,,,(610),,,,,,,(),,,,22:,,,,,,,,3,,()36200308©1995-2007TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,44(a)(),,20kHz,31.5kHz,20kHz,4(b)4(b),,(a)(b)4,,,,,,,,,,,(),,,,,-(),,,,,,,,,,,,,,,()()(),,1AndrewLKurkjian.Numericalcomputationofindividualfar2fieldarrivalsexcitedbyanacousticsourceinaborehole.Geo2physics,1985,51(4)2..,2000,25(4)3,,,..,2002.16(6)(:2002-11-27:)7174:©1995-2007TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.ABSTRACTSChaiShuchang.DSUandDSUlink.PI,2003,17(4):14Inthispaper,anewtypeseismicsensorDSUwithultraprecisionisintroduced.ItiscomposedofMEMSandASIC,withitsdistortionof0.0032%,andresponsefrequencybandof0800Hz.DSUlinkintegratesacquisitionstation,maincableandgeophonetogether,whichnotonlyeliminatesboththeelectromagneticinterferenceandtrace2to2tracein2terference,butalsoimprovesthedataacquisitionprecision.TheapplicationofDSUandDSUlinkwillprovidereliableguaranteeforultraprecisionseismicexploration.KeyWords:seismicsensor,MEMS,Link,accelerometer,geophonearryXuYujun,ShenJianguo,TianSuyueandLvDianzhong.Keyfactorsforimprovingthepropertiesofsoniclog2gingtool:frequencycharactersofthetransducer.PI,2003,17(4):57Basedonthesonicloggingtheory,whichtheP2waveofformationinboreholeandtubewaveofpipepropagateindifferentfrequency,thispaperdiscusseshowtoimprovethepropertiesofsonicloggingtool.Anewsystemthatcanmea2suresonictransducerandgetthefrequencycharactersisintroduced.Withthehelpofthemeasuringsystem,thepropertransducersarechosentomatchthesonicloggingtoolinordertogeteffectivelytheslownessofformationorbondinforma2tionofpipewell.KeyWords:soniclogging,transducer,conductancecircle,tubeMaXiangdongandZhaoJiafan.RresearchofinfluenceofdrillingliquidonE1f1membergas2bearingsandstonereservoirofZJDstructure.PI,2003,17(4):810,13Basedontheinvasionmechanismofdrillingliquid,theconstructionoftheoreticmodelandthegeologicalcharacterdescriptionofreservoir,thispaper,usingnumericalvaluesimulationtechnique,analyzestheresponsecharacterofdeepandmiddleinductionresistivityloggingofthisreservoirunderdifferentdrillingliquidsinvasion,andputsforwardthemostappropriatetimeofinstantaneousloggingandtime2lapselogging.KeyWords:drillingliquid,invasion,gasstratum,resistivitylogging,loggingresponseSongYuanhe,ZhangShaobiao,DingZhenhongandSunGuojie.Applicationofmicroseismmonitoringtechnol2ogyinthesuperES35-10reservoirofPuchengoilfield.PI,2003,17(4):1113Themicroseismmonitoringtechnologycanmonitorthelongthwidthandaltitudeoffracture,andhasstrongtheorybasisforanalyzingfractureeffect,avoidingstrongwaterfloodinthewaterlinedirection,determiningthewaterfloodad2vanceddirectionandthedistributionofsurplusoil.ThesuperES35-10reserviorinthePuchengoilfieldisasetofmul2ti2layerreservoirwhichrepresentsstrongheterogeneity.Implementingman2madefractuteisoneofmainwaysforreseviorreformation.Thistechnologycanprovidereliablebasisforadjustmentandexploitionplaninthisreservoir.KeyWords:lowpermeabilityreservoir,man2madefracture,waterflood,microseismmonitoring,PuchengoilfieldZhouJun,QianWeidongandSuYanshan.Ondualchromatogramunitgasloggingmethodanditsaffectedfac2tors.PI,2003,17(4):1415Inordertoeliminatethemudeffectsongaslogging,thispaperputsforwarddualchromatogramunitsgaslogging.Thismethodadoptsinandoutchromatogramunitstoperformancethelogging.Thepaperanalyszestheprincipleofdualchromatogramunitgaslogginganditsaffectedfactors,andalsogivesthecorrectingmethodstoeliminatetheinfluenceof06PETROLEUMINSTRUMENTSAug.2003©1995-2007TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.