水敏性稠油油藏火燒驅(qū)油機(jī)理研究.pdf

1、中國石油大學(xué)（華東）博士學(xué)位論文水敏性稠油油藏火燒驅(qū)油機(jī)理研究姓名：王世虎申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：油氣田開發(fā)工程指導(dǎo)教師：姚軍20071001MechanismofInsituCombustioninSensitiveHeavyOilReservoirByWANGShi—huDissertationSupervisorYAOJun(Professor)AbstractAsanimportantheavyoildevelopmenttec

2、hnologyill—situcombustionisreceivingmoreandmoreattentionbyreasonofitslowcostbroadapplicabilityandhighrecoveryTllisPaglel“willdetailthedeepmechanismofinsitucombustionofheavyoilreservoirwhichsensitivetowaterbyusingblockZhe

3、ng一408118archetypeFirstlythenew1DphysicalmodelisdesignedtoevaluateinsitucombustionprocessCorecomponentsanalysisbeforeandafterburningshowsthatclayfractionsuchaskantinitoandmontmorillonitodecreasesThermogravimetricanalysis

4、alsoshowsthatthewrightofthecorebc：giastodecreaseat334℃AdditionallytheairinjectionpressureislowerafterburningthanbeforeA11theseshowthatinsitucombustiondoesn’tdamagetheformationonthecontraryincreasestheformationpermeabillt

5、ySeveralexperimentsresultsshowthatairi面ectionrateisthekeYfactortoinfluencethefirefloodingthehigherinjectingrateandthehighertheadvancingspeedofcombustionfrontnwfiretoodingformationcanbedividedintofivezoll囂frominjectionwel

6、ltoproductionwellbasedonthethermod舢oicsanalysisasfollow：combustedzone‘firewall’zone‘pneumaticcushion’zone‘Oilbank’zoneandtheinitialoill韶ervoirWithinoilbankthereisrelativelyhighflowresistanceandhighpressuredrawdownwhichsh

7、owsthatthekineticenergyhasbeentransformedintopotentialenergyofthiszoneSecondlythe3DphysicalmodelofinsitocombustionisdesignedOllbasisofsimilaritvtheory111e3Dphysicalexperimentsshowthatthereexistsevidentlygravityoverridein

8、thefrontofcombustionunderconditionofconventionalvertiealwellpatternandplanarfirefloodingPartialperforationinthelowerpartofproductionwellscallcontributeteducegravityoverrideThedirectionandsizeofleadingedgeofcombustioncanb

9、eadjustedbycontrollingtherateofproductionfluidindifferentialdirectionCombustionassistedgravitydrainageisanimportantrecoverymechanismonconditionthatthehorizontalwellbetakenasproductionwellinthebottomofoillayerandthusdisad

10、vantagesofoilbankcanbeeliminatedeffectivelyLastlythecomprehensiveappraisalbyusingphysicalsimulation，reservoirellgineeringandperfomanceanalysisshowthatthecombustionwithintheoillayerofZheng408isinhi吐temperatureoxidationsta

11、teThemainmechanismofrecoveryintheformationisfluegasdriveandassistedsteanldrivewhichgrowoutofcombustioninhighlywatersaturatodreserveitInfrontofburningzonehighoilsaturationbankisformed，inwhichpresmlrodecreasesgreatlyduring

12、firefloodingBecausethalthebankisawayfromtheproducertheproducershowslowproducfivityOnceitgoesneartotheproducerproductivityincreasesstepbystep11leresearchworkofthisP粕el“isinstructivetothedevelopmentofreservoirwhichsensitiv