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1、2011年l2月大慶石油地質(zhì)與開發(fā)Dec..2011第30卷第6期PetroleumGeologyandOilfieldDevelopmentinDaqingV01.3ONo.6DOI:10.3969/J.ISSN.1000-3754.2011.06.030低滲透油藏注空氣提古同木盈收率物理模擬實驗劉尚奇王伯軍孔凡忠劉雙卯陳亞平王家春(1.中國石油勘探開發(fā)研究院提高采收率國家重點實驗室,北京100083;2.大慶油田有限責(zé)任公司海拉爾石油勘探開發(fā)指揮部,內(nèi)蒙古呼倫貝爾021000)摘要:為了確定輕質(zhì)油藏注空氣提高原油采收率技術(shù)在海塔油田貝中次凹區(qū)塊應(yīng)用的可行性,根據(jù)注空氣的主要技術(shù)原
2、理,設(shè)計了水驅(qū)和空氣驅(qū)驅(qū)油效率對比實驗、細(xì)長管空氣驅(qū)低溫氧化實驗、燃燒管空氣驅(qū)高溫氧化實驗和產(chǎn)出氣體溶脹實驗。研究表明:海塔油田空氣驅(qū)比水驅(qū)驅(qū)油效率高22.19%;注空氣后油藏中可以發(fā)生低溫氧化反應(yīng),且氧化隨溫度升高加速進行;取得了低溫氧化反應(yīng)動力學(xué)參數(shù)活化能和指前因子;得到了產(chǎn)出氣組分變化關(guān)系及產(chǎn)出氣溶于原油后溶解度、黏度、密度和體積系數(shù)的變化。驗證了注空氣低溫氧化采油技術(shù)原理,為輕質(zhì)油藏注空氣開發(fā)技術(shù)的礦場實施提供了可靠依據(jù)。關(guān)鍵詞:低滲透油藏;空氣驅(qū)油技術(shù);低溫氧化;物理模擬實驗中圖分類號:TE357.4文獻標(biāo)識碼:A文章編號:1000—3754(2011)06-()1434)
3、5PHYSICALSIMULATIoNEXPERIMENToFAIR-INJECTIoNEoRINLoW-PERMEABILITYOILRESERVOIRSLIUShangqi,WANGBojun,KONGFanzhong,LIUShuangmao,CHENYaping,WANGJiachun(1.NationalKeyLaboratoryofEnhancedOilRecovery,PetroChinaResearchInstituteofPetroleumExplorationandDevelopment,Beng100083,China;2.HailarPetroleumExpl
4、orationandDevelopment.HeadquartersofDaqingOilfieldCompanyLtd.,Hulunbei’er021000,China)Abstract:Inordertodeterminethefeasibilityofapplyinglight--oilair-injectionEORtechnologyinBeizhongSub--sagofHailar—TamsagOilfield,thecontrastexperimentofthedisplacementeficiencyofwaterfloodingandair—injec—tiond
5、isplacement,slimetubelow-temperatureoxidationtestofair—injectiondisplacement,combustiontubehigh-temperatureoxidationtestofair-injectiondisplacementandswellingexperimentofproducedgasaredesignedac·-cordingtomaintechnologicaltheoryofairinjection.Thestudyshowsthatthedisplacementeficiencyofair-injec
6、-tiondisplacementis22.19%higherthanthatofwaterflooding.Lowtemperatureoxidationmayoccurinreservoirsafterairinjection,andmoreovertheoxidationmayacceleratewiththeincreaseoftemperature.Thekineticparame—tersoflow—temperatureoxidationreaction,i.e.a(chǎn)ctivationenergyandpre—exponentialfactor。areobtained.T
7、hecomponentchangerelationofproducedgasandthechangeofsolubility,viscosity,densityandvolumefactorofpro-ducedgasafteritsdissolveincrudeoilareobtained.Thetechnicalprincipleofair—injectionlow—temperatureoxida-收稿日期:2011-01-06改回日期:2011-0