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1、TypesandresearchmethodsofthedominantmigrationpathwaysJIANGFu-jie1,2,PANGXiong-qi1,2,JIANGZhen-xue1,2,MAXing-zhi1,2,ZHOUXiaohui1,2(1.BasinandReservoirResearchCenterofChinaUniversityofPetroleum,ChangpingDistrict102249,Beijing;2.KeyLaboratoryforHydrocar
2、bonAccumulationMechanismofEducationMinistry,ChangpingDistrict102249,Beijing;3.StrategicResearchCenterofOilandGasResources,MinistryofLandandResources100034,Beijing)Abstract:theresearchonthedominantmigrationpathwaysisthebasisoftracingmigrationdirection
3、accuratelyandpredictingexplorationdestination.Thedominantmigrationpathwaysdoexistandhasbeenverifiedbygeologicanalysisandnumericalsimulation,butit’sresearchmethodsarenotperfect.Thispaperpointsthattherearefourbasicpatternsofdominantmigrationpathways:do
4、minantmigrationpathwaywithdifferentlevels,withseparationtrough,withfluidpressure,andwithpreponderantflowdirection.Basedonanalysisofaffectingfactorsaboutthefourbasicpatterns,andcomprehensivelyconsideringtheundersidecstructuralfeaturesofcaprocks,hydrod
5、ynamiccondition,accumulationsandbodies,faultcharacters,thispaperdevelopstworesearchmethods:single-elementsuperpositionanalysisandmulti-elementsuperpositionanalysis.Usingthesetwomethods,thispaperpredictsthedominantmigrationpathwaysofmiddleaccumulating
6、groupingwithacredibleconsequenceatBinbeiareasinSongliaoBasin.TherearetwodirectingdominantmigrationpathwaysinthemiddleaccumulatinggroupingatBinbeiareas,whichlinksdifferentsourcerocksseparately.Multidisciplinaryanalysisindicatesthatit’sfeasibletopredic
7、tthedominantmigrationpathwaysbyusingthetwomethods.Keywords:migrationofoilandgas;dominantmigrationpathways;BinbeiareasinSongliaoBasinTheresearchonthesecondarymigrationpathwaysisthebasisoftracingmigrationdirectionandlocatingreservoirposition,itcanguide
8、explorationofhydrocarbonefficiently.Asthemigrationpathwaysareaffectedbymanyfactors,theresearchofitremainsafocusofpetroleumgeology.Itisindicatedthatthesecondarymigrationofhydrocarbononlypassesthroughlimiteddominantpathwaysandthespaceofmigrationismerel