定边油田微生物采油菌株的筛选的研究性能评价

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1、英文摘要Subject：Speciality：Name：Instructor：StudyonOilreservoirmicrobialstrainsScreeningandtheircharacteristicsChemicalTechnologyYuanShuling(signature)WangXiaoqQinFanglinMicrobialEnhancedOilrecovery(MEOR)isakindofenhancedoilrecoverymethodthattakeadvantageofthegrowth,reproductiona

2、ndmetabolismandotheractivitiesoftheMicrobialtotakecomplexphysical，chemicalandbiologicalreactiononsolidandliquidinoilreservoir．DiIlgbianoilreservoirbelongstolowpermeabilityreservoirswithlowporosityandlowoilrecovery．MEORProvidesatechnologicalmeanstotakeafurtherexploitationtoit

3、．Inthispaper16strainsofmicroorganismsisolatedandcultivatedfromDingbianoilfildwastewaterandactivatedsludgeofrefinery．ThefourstrainsofmicroorganismsnamedD一1、D．2、D一3andD一4werebeenidentifiedthroughmetabolizecharacteristics．Thereservoiradaptabilityandothercharacteristicsiustlikec

4、hangetheoilcontent，reduceoil．waterinterfacialtension，reducepH，reducewaxcontent，reducesolidifyingpoint，reduceviscosity,emulsifyoil．changecarbondistributionoftheoilhadbeenanalyzed．TheresuRshow：fourstrainsofmicroorganismscouldhaveabettergrowthintheenvironmentwhichtemperaturefro

5、m45℃-55℃．pHfromweakacidtoalkalescenceandNaclcontentlessthan5％．Wrllencultureon45℃for5days．thefermentationliquorofD．3andD-4couldlOWdowntheoil．waterinterfacialtensionfor39．1％and45．39％．Fourstrainscouldproducedmoreorganismsacidat35"Cwhichthetemperatureislowerthanthemostappropriat

6、etemperature．Theycouldreducewaxcontent，reducesolidifyingpoint，reduceviscosityeffectivelywhenthetemperaturefrom45℃-55℃．thetime丘om2～15d．fourstrainsreducesolidifyingpointbetterontheoilwhichhasthelowersolidifyingpoint，D一3andD一4reduceviscositybetterontheoilwhichhasthehigherviscos

7、ity．whencultureon45℃for30daystooilI．gettinganwaxremovalrateof49．47％、41．28％、49．58％and46．19％，reducesolidi研ngpoint旬r7℃，5．4℃，8．0℃and7．7℃，reduceviscosityfor45．96％、38．97％、50．37％and49。26％．TheemulsifyingabilityfourstrainsisD一3>D一4>D．1>D．2．fourstrainscoulddegradethevariouscomponentso

8、foil．D．3andD一4coulddegradesaturatedhydrocarbon．gumandasphaltineeffectively,