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1、SPE128011ANewMethodofGrainSizeDeterminationforSand-ControlCompletionApplicationsJ.Chen,S.Chen,M.M.Altunbay,E.Tyurin,BakerHughesCopyright2010,SocietyofPetroleumEngineersThispaperwaspreparedforpresentationatthe2010SPEInternationalSymposiumandExhibitiononFormationDamageControlheldinLafayette,Louisiana,
2、USA,10–12February2010.ThispaperwasselectedforpresentationbyanSPEprogramcommitteefollowingreviewofinformationcontainedinanabstractsubmittedbytheauthor(s).ContentsofthepaperhavenotbeenreviewedbytheSocietyofPetroleumEngineersandaresubjecttocorrectionbytheauthor(s).Thematerialdoesnotnecessarilyreflectan
3、ypositionoftheSocietyofPetroleumEngineers,itsofficers,ormembers.Electronicreproduction,distribution,orstorageofanypartofthispaperwithoutthewrittenconsentoftheSocietyofPetroleumEngineersisprohibited.Permissiontoreproduceinprintisrestrictedtoanabstractofnotmorethan300words;illustrationsmaynotbecopied.
4、TheabstractmustcontainconspicuousacknowledgmentofSPEcopyright.AbstractGrainsizedistributionofformationsandsisoneofthecrucialparametersinasandcontrolprogram.Suchinformationiscommonlyderivedfromsieveorlaserparticlesizeanalysis(LPSA)techniquesonalimitednumberofcoresamplesfromthetargetwellorfromaneighbo
5、ringwellinthesamefield.Theselaboratory-basedgrainsizeanalysismethodsrequireproperdisaggregationofgrains,aprocesswhichoftencausesbreakupofsomegrainsresultingindistortioninthegrainsizedistribution.Moreover,variationsofgrainsizesintheformationmaynotbecapturedbythelimitednumberofcoresamples.Thispaperpre
6、sentsanewmethodofgrainsizedeterminationfromnuclearmagneticresonance(NMR)logsusingmicro-structuralrockmodeling(MSRM).NMRprobestheporespaceastherelaxationtimedistributionofthewetting-phasefluidcorrelatestoporesizedistributionwhilethenon-wettingphasefluidcarriesnoporesizeinformation.Toderivegrainsizedi
7、stributionfromNMRrelaxationtimemeasurements,MSRMisappliedtoreconstructthepore/graindistributionandtosimulateNMRresponsesbyconsideringmineralogy,partialwatersaturation,surfacerelaxivity,andthesurfacero
