高含水厚層層內(nèi)控水提高采收率壓裂技術研究.pdf

1、大慶石油學院博士學位論文高含水厚層層內(nèi)控水提高采收率壓裂技術研究姓名：韓松申請學位級別：博士專業(yè)：油氣田開發(fā)工程指導教師：王德民20060301摘要FracturingTechniqueStudyofInternalControllingWatertoImproveRecoveryEfficiencyatHighWater—bearing‘ThickBedsAbstractAtpresent，alotofoilfieldsonthewo

2、rldenterthematureproductivelifeAstheoilisthenonrenewablemineralresourcesforexcavation，howtogetmorepetroleumresourcestothegreatestextehtwillplayanimportantroleinworldeconomiccontinueddevelopmentTherefore，thetechniquetoimp

3、roverecoveryefficiencyhasanextensiveattentionworldwideTofnrtherexcavationpetroleumresources，studyandtesttoimpmverecoveryefficiencytechniquehavedevelopedenthusiasticallyathomeandabroadinrecentyearsTheyarepolymerfloodingte

4、chnique，polyatomicfloodingtechnique，misciblefloodingtechnique，deepprofilecontroltechniqueandsoonThesetechniquesgotgoodappliedresultsTogetbetterresults，weworkhardtoexploretheinventionanddiscoveryinprincipleinordertofnlthe

5、rimproverecoveryefficiencyandbenefitofmethodsThickbedisthemainoilreservoirofdevelopingDaqingoilfieldwhichcontainsover60％resourcesalloverthefieldTheoilfieldhasdevelopedformanyyears，butithasalotofnonproducingremainingieser

6、vestohaveextensiveexcavationpotentialTherefore，accordingtothesituationofdevelopingthickbedsnowthetechnicalstudyshouldbeworkedhardtoeffectivelycontrolwatercutandtoimproverecoveryefficiencyitssignificancebeinggreatSincethe

7、oilfieldenteredthehi曲watercutstagewaterbearingspeedwasveryfastandthewatercuthighTheoverallwatercutofthewholefieldreached87％attheendof2000Thewatercutofmainreservoirproducedbybasicwellnetworksreached9095％，theproductioncost

8、increasedyearbyyearThereforeaccordingtothedevelopmentofthickbeds謝血llighwatercutandtheproductioncharacteristicsofoilwellsathi曲watercutstage，wepresentthewellstimulationtoimproverecoveryefficiencythatistosaywedevelopedthere

9、lativepermeabilitymodifiers(RPM)andusedthecorrespondingtechnologiestocompletetheresultofthedisproportionatepermeabilityreduction(DPR)intheoilreservoitcontrollingthewatercutincreaseofoilwellsandprolongingtheproductionlife

10、TheobjectofimprovingrecoveryefficiencyandincreasingproductionofthickbedSwithhighwatercutwereobtainedbychangingtheflowwateroilratio(WOR)intheformationtoimprovethewatersaturationintheoilreservoirThemainresearchcontentsandn

11、ewideasareasfollows：(1)Creativitypresentsthetechnicalprincipleofusingtherelativepermeabilitymodifiers(砌’M)toimproverecoveryefficiencyTherelativepermeabilitymodifiers(RPM)arecomposedofhi曲molecularpolymerorweakcrosslinkedg

12、elItismainlyusedtoplugwaterselectivelyThepaperstudiedandconsideredthatRPMhasthecharacteristicofDPRtochangeoilwatermobilityratioTherefore，thewatersaturationshouldriseandtheoilsaturationshoulddropintheoperationalzoneandthe

13、extentofactioneffecttoimprovethemicroscopicoildisplacementefficiencyAtthesametime，RPMalsohastheactionofdrivingoilandchangingsweptvolume，orithasmanyactionmechanismstoreachtheobjectofimprovingrecoveryefficiencytothegreates