低滲透油藏CO-,2-驅油滲流規(guī)律宏觀描述研究.pdf

1、中國石油大學（華東）碩士學位論文低滲透油藏CO驅油滲流規(guī)律宏觀描述研究姓名：高海濤申請學位級別：碩士專業(yè)：油氣田開發(fā)工程指導教師：蘇玉亮20090401TheMacroscopicDescriptionStudyofSeepageFlowLawsonC02floodinginLowPermeabilityReservoirsGaoHaitao(DevelopmentEngineeringofOil&GasField)Directedby

2、ProfSuYuliangAbstractAtpresent，mostofChinesecontinentaloilfieldsusewaterfloodingdevelopment，buttherecoveryofmostreservoirsareverylowbecauseoftheimpactofreservoirheterogeneityandotherreasons，andthedevelopmenteffectsarefar

3、fromsatisfactoryAsakindofgreenhousegas，C02isalsoanon—pollutingdisplacingagentManycountrieshavealreadyfocusedonthestudyofC02intheoilfielddevelopmentItisnoteworthythatthelowpermeabilityoilfieldswhichhasbeenprovedthatC02flo

4、odingCallobtaingoodresultsforthelowpermeabilityandsmallfaultblockoilreservoirinwhichthewaterfloodinghasprovenineffective，butinourcountrythestudyoftheApplicationofC02isstillattheinitialstagetherefore，descriptionandresearc

5、hofseepagelawsofC02floodinginlowpermeabilityreservoirsareofgreatsignificanceInthisarticlefluidflowparametersattheprocessofC02floodingaremodificatedaccordingtothegeologicalandfluiddatasoffieldoilwellsandcombiningwiththech

6、aracteristicsofC02flooding，andthecapillaryforceandactuatingpressuregradientaretakenintoaccount，onthisbasisaonedimensionalnonmisciblemathematicalmodelofC02floodingisbuilt，thennumericalsolutionisobtained，andalsomatchesthee

7、xperimentaldatatoverifythereliabilityofthemathematicalmodelTheresultsshowthat：thehighertheviscosityofcrudeoil，themoreobvioustheeffectsofviscosityreductionbyC02，andC02solubilityincrudeoildropswiththedropofformationalpress

8、ure；undertheactionofcapillaryforcetheFMPissmaller；theactuatingpressuregradienthaslittleeffectontheC02driveinlowpermeabilityreservoirs，therefore，C02callbeappliedasadisplacementagentforthedevelopmentoflowpermeabilityreserv

9、oirsConsideringthecharacteristicsofC02flooding，amathequationissetupandthecharacterizationsofviscousfingeringandinfluencingfactorsarestudiedThelawsoftheimpactoftheinjection—productionpressuredrawdownandreservoirtemperatur

10、eontheviscousfingeringareregressed，andtheycanguidetheactualproductionintheoilfieldTheresultsshowthat：Withtheinjection—productionpressuredrawdownincreases，theextentofviscousfingeringappearsinthetrendoffirstincreasedthende