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1、GEOLOGICNOTEAUTHORSS.N.EhrenbergStatoil,N-4035Stavanger,Sandstonevs.carbonateNorway;sne@statoil.comStevereceivedaPh.D.fromtheUniversityofpetroleumreservoirs:AglobalCaliforniaatLosAngelesin1978.Heworksonsandstoneandcarbonatereservoirstudiesperspectiv
2、eonporosity-depthforexplorationandproductionprojects.P.H.NadeauStatoil,N-4035Stavanger,andporosity-permeabilityNorwayFirstjoiningStatoilin1986,PaulnowservesasarelationshipsspecialistintheGlobalExplorationdivisionworkingwithbasinevaluationandpetroleu
3、msystemsanalysis.OriginatingfromMaine,S.N.EhrenbergandP.H.NadeauPaulreceivedhisdegreesingeologyfromBos-tonCollege(B.Sc.degree,1975)andDartmouthCollege(Ph.D.,1980,petrologyofCretaceousmarineshales,westernUnitedStates).Earlyin-ABSTRACTdustrialexperienc
4、eincludespetroleumexplora-Plotsarepresentedcomparingaverageporosityvs.depthfortionintheRockyMountainsfortheAnschutz30,122siliciclasticpetroleumreservoirsand10,481carbonatepe-Corporation.PostdoctoralresearchattheMa-troleumreservoirscoveringallpetroleu
5、m-producingcountriesex-caulayInstituteinAberdeen,Scotland,resultedinseveralseminalpublicationsinmineralogyceptCanada.However,separateplotscover5534siliciclasticandanddiagenesis.Paulhasalsoservedasare-2830carbonatereservoirsoftheAlbertabasininCanada.A
6、veragesearchspecialistinformationevaluationforpermeabilityvs.averageporosityisshownforthenon-CanadianExxonCorporation(nowExxon-Mobil).reservoirs.Keysimilaritiesanddifferencesbetweensandstonesandcarbonatesarenoted,andimplicationsarediscussedregardingt
7、hedominantfactorscontrollingreservoirqualityineachlithology.ACKNOWLEDGEMENTSTrendsofsteadilydecreasingmedianandmaximumporositywithWethankK.Bjørlykke,J.H.Doveton,J.Garland,increasingdepthreflectburialdiageneticporositylossinresponseandA.Hurstforhelpfu
8、lsuggestionstothetoincreasingthermalexposurewithdepth.Thesetrendsseemin-manuscript.S.VasshusandK.RuudprovidedconsistentwiththesuggestionsthatbothsandstonesandcarbonatestechnicalsupportfortheWesternCanadaup-commonlyincreaseinporositybydissolutiondurin