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:100922722(2003)09200312041,1,2,1,2,2(1,163318;2,163001):,,,,,=/,,:;;;;;:P618.09:A,,,,,,,,,,11.1:(A01213).:2003204222:(1961),,,,.[1,2],,:N=Ah0(1),N,104t;A,km2;H,m;0,104t/km2m,()();,:(1),(2),,:=/,:=ISSN100922722MarineGeologyLetters2003,19(9)3134©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1.2,,,,;,,,,;,,,,,,,(),,,,,,,,22.1,,,,,,,,()2.2,[36],,:(1)A,B2,3Ci,Ci(1)Ci:1([6])Fig.1Discriminantmethodusingcosinevalues(modifiedfromXUQingetal.[6])cosCi=ai2+bi2-c22aibi(2),ai=BCi;bi=ACi;c=AB(2),,,;,,,2.3,(2),23MarineGeologyLetters20039©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(),,:Ai=(p-a)(p-b)(p-c)(p-d)-abcdcos2(3)2Fig.2Usingthetriangulationmethodtocalculateasingle2well2controllingarea,Ai;abcd;ABCDp=12(a+b+c+d)(4)=12(A+C)=12(B+D)(5):A=ni=1Ai(6),A;Ai;n2.4,,,3S+PS+P51,(),S4+51S81S101P1014(),,()4,11S4+51,11649t;S81,141197t;S10181509t;P101151127t,,,,,,4(1),,=/,33199,:©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1Table1.ComparisonofgeologicreservescalculatedusingoldandnewmethodsS4+51(km2)(104t)0.1614.6533.9981.43810.250.1804.6083.8344.37412.9963.60835.8778.66811.04959.2024.03235.0618.04110.41957.553S81(km2)(104t)6.3464.6239.3132.54522.8276.1024.7709.4685.11225.452236.85057.39626.60415.493336.343221.80558.89226.9414.509322.146S101(km2)(104t)1.1572.1302.9370.9927.2161.3682.3763.4563.00610.20633.69322.4788.0319.33273.53440.31624.1689.5048.05582.043P101(km2)(104t)0.7767.07810.2183.79121.8630.9187.59611.0348.96428.51224.55868.06945.01231.705169.34428.48373.42746.85335.708184.471(2),,(3),,:[1],,.()[M].:,1993.379394.[2],,.()[M].:,1996.275326.[3].Delaunay[J].,1999,28(1):2835.[4]LeeDT,SchachterBJ.Twoalgorithmsforconstructingadelaunaytriangulation[J].Int.J.ofComputerandInforma2tionSciences,1980,9(3):162168.[5]MzCaullaghMT,RossCG.Delaunaytriangulationofarandomdatasetforiirarthmicmapping[J].TheCarto2graphicJournal,1980,(17):9399.[6],,.TIN[J].,2000,5(6).2003723(5c)(5e),12(5c5b5a)5e5c5a;64(a)(b),()43MarineGeologyLetters20039©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.FromthefirstevidenceofmicrobialactivityinthesubsurfacerealmofoceanicsedimentsprovidedbyDSDPin1970stoconvincingthewidespreadpresenceofadeepsub2seafloorbiospherepresentedbyODPuntil1990s,thislargelyundocumenteddeepbiospherehasbeenoneofthemostimportantdis2coveriesforscientificoceandrillinginrecentyears.Moreover,itisschemedoutthatIODPbeinitiatedfromOct.1,2003,whichwillpromotethecross2linkofgeosciencesandbiologyaswellasothercor2relativesubjects.Keywords:deepbiosphere;DSDP;ODP;IODPPOOLINGCONDITIONSANDCONTROLLINGFACTORSOFGASPOOLSINYANCHENGFORMATIONOFSUBEIBASINZHUHou2qin,ZHUYu,ZHENGKai2fu(InstituteofGeosciences,JiangsuOilCompany,SINOPEC,Yangzhou225009,China),2003,19(9):22226ThereisagreatgasresourceinSubeibasin,representedbytheZhouzhuangandXiqiaogasfields.Theburieddepthofthegasisshallow(1000m).Theauthorsdiscussaboutthepoolingconditionsandcontrollingfactorsofthegassystematically.Throughthestudy,YanchengFormationcantgeneratehydrocarbon,butthereservoirs,caprocksandsourcerocksareingoodcondition.ThehydrocarbonmigratesupwardalongfaultsandaccumulatesintrapsintheFormation.Thegaspoolsarecontrolledbyfourfactors,thatis,sourcerock,fault,caprockandtheintensityofgasgeneration.Keywords:gasreservoir;poolingcondition;controllingfactor;YanchengFormationINFLUENCEOFCYCLICCOMPONENTONRE2SCALEDRANGEZHOUHou2yun(GuangzhouInstituteofGeochemistry,ChineseAcademyofSciences,Guangzhou510640,China),2003,19(9):27230Althoughrecentlyre2scaledrangeanalysis(R/Sanalysis)hasbeenincreasinglyusedinpaleo2climaticandpaleo2environmentalresearches,theinfluenceofcycliccomponentontheanalysisisseldomdis2cussedintheseresearches.However,withforcingmechanismofglobalpaleo2climateandpaleo2envi2ronmentbytheEarthorbitandsolaractivity,cycliccomponentisoftendiscoveredinmanyproxiesofpaleo2climateandpaleo2environment.Cycliccomponent,whichclearlydisplayslongrundependence,exertsanimportanteffectonre2scaledrangeanalysisoftimeseries.Twoexamplesaregiveninordertoshowthiseffectmoreclearly.Itissuggestedthatinpaleo2climaticandpaleo2environmentalre2searches,anyconclusionbasedontheanalysisofproxiesshouldbeusedcarefullyifnoinfluenceofcycliccomponentisconsidered.Keywords:R/Sanalysis;cycliccomponent;influenceMETHODOFFINECALCULATIONOFGEOLOGICRESERVESLIUJi2yu1,SUIXin2guang1,2,YURun2tao1,2,LIUGuo2tao2(1DaqingPetroleumInstitute,Daqing163318,China;2TheFirstProductionFactory,DaqingOilfieldLimitedCompany,Daqing163001,China),2003,19(9):31234Geologicreservesareanimportantfactortodecideoilandgasexplorationandexploitationaswellasin2vestmentsum.Withthedevelopmentworkofhighwater2cutoilfieldgoingdeep,andinordertosolvetheproblemofthedetuningofreservesandmining,theauthorssuggestatriangulationmethodtode2terminetheareacontrolledunderonesinglewellandtocalculategeologicreservesinvarioustypesofsandbodiesinthewell.Unlikethetraditionalcalculationmethodscontrollingareabyasinglewell=totalareaoftheblock/totalwellnumberintheblockandthicknessaverage,oursuggestedmethodhaslesserrors,andthusgivemorereasonablegeol