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3、ciality：Name：Instructor：StudyonairfoamfloodingfeasibilityinTang80areaofGanGuYiOilfieldOilandgasengineeringLiChan(signature)XuYuangangZhangXinchunABS’l’RAC’l’TheTang80areawaterfloodingpilottrialsbeganin2001，intheprocessof

4、waterfloodinginwellsofeastwestfracturewaterbreakthrough，watercutrisingfast，indiviualwellshutinforwaternorthandsouthtowaterinjectionwellishardtowork0ilrecoveryrateislowaccumulatedinjectionproductionratioislowformationener

5、gycontinuestodecline，waterinjectionwellheadpressurecontinuedtise，waterinjectionpressureclosetothecrackextension，improvetheabilityofwaterinjectionisdifficultBeside，inshanbeiregion，thispapercombinedwithdrought，therearesoma

6、nyproblems，suchaslargescalecomprehensivewaterinjectiondevelopmentdifficultiesInordertoimprovethedevelopmentoftang80wellblockspeedandimproverecoveryfactoratthesametimeinordertogivethewholeoilfieldenergyincreasethespeedofd

7、evelopmentandtoprovideexperienceforrecoveryitisnecessarytocarryouttang80areaairinjectionefficiencyoffoamfloodingpilotteststudytoexplorethesecondaryoilrecoveryofultralowpermeabilityoilfieldtoimproveoilrecoveryinthisareaBy

8、analyzingthereservoirtemperatureandpressuresystems，reservoirsensitivityandfracturingeffectsofTang80areawecarriedoutairflooding，foamflooding，waterfloodingandotherexperimentsEvaluatedwaterfloodingandfoamfloodingcomprehensi

9、ve，chosethebestfoamsolutioninfoamfloodingClearTang80areaeffectivelyinjectingairandfoamunder16MPaanditseffectivedurationandeffectivelevelDeterminedtheprinciplesofwellsoptimizationofairbubblefloodingandoptimizetheinjection

10、parametersFieldtestsshowedthatfoamfloodingdoesnotappearinjectionfluidchanneling，eachwellhasefficiencyofLiquidincreases，precipitationandoilincreases，thewaterdropoforiginalhighwatercutwellsisbig，theoriginallowwatercutwells

11、issmall；andthedifferencebetweenthemoisturecontentofeachwellwhencomparedtowaterfloodingmoisturecontentofeachwellhavesignificantlyreduceInaddition，theeconomicefficiencysignificantlyexpectedinputoutputratioisgreaterthan1：3K