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1、第45卷第4期當(dāng)代化工VO].45.N0.420:1_6年4月ContemporaryChemicalIndustryApirl,2016影響低滲透油藏空氣泡沫驅(qū)的多參數(shù)綜合評(píng)價(jià)周志軍L,周福(I.東北石油大學(xué)提高油氣采收率教育部重點(diǎn)實(shí)驗(yàn)室,黑龍江大慶163318;2.東北石油大學(xué)非常規(guī)油氣成藏與開發(fā)省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地,黑龍江大慶163318)摘要:根據(jù)敖南油田M區(qū)塊的開發(fā)特征,對(duì)比分析了各種改善低滲透油藏開發(fā)效果的提高采收率方法優(yōu)缺點(diǎn),開展了M區(qū)塊高含水期的空氣泡沫驅(qū)技術(shù)研究。針對(duì)現(xiàn)場(chǎng)應(yīng)用參數(shù)存在一定的不確定性,缺乏參數(shù)
2、定量值等問題,本文運(yùn)用數(shù)值模擬軟件對(duì)對(duì)比方案進(jìn)行預(yù)測(cè),首次以增油量和投入產(chǎn)出比作為評(píng)價(jià)指標(biāo),對(duì)敖南油田M區(qū)塊空氣泡沫驅(qū)注人參數(shù)進(jìn)行優(yōu)化評(píng)價(jià)。研究結(jié)果表明,對(duì)于敖南油田,注空氣效果影響因素的重要性大小依次為氣液比>起泡劑濃度>注氣速度起泡劑注入量。注入?yún)?shù)最優(yōu)方案為氣液比為3:1;起泡劑濃度為0.3%;注氣速度為40m/d;起泡劑注入量為0.5PV。對(duì)敖南油田空氣泡沫驅(qū)提高采收率開發(fā)方案的制訂及優(yōu)化具有重要指導(dǎo)意義。關(guān)鍵詞:空氣泡沫驅(qū);低溫氧化;優(yōu)化評(píng)價(jià);數(shù)值模擬i投入產(chǎn)出比中圖分類號(hào):TE357文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1671—046
3、0(2016)04—0756—03Multi.parameterComprehensiveEvaluation0fAirFoamFloodinginLOWPermeabilityReservoirsZHOUZhi-jun,_.ZHOUFu,f1.KeyLaboratoryofenhancedoilandgasrecoveryintheMinistryofeducation,NortheastPetroleumUniversity,HeilongjiangDaqing163318,China;2.StateKeyLaboratoryof
4、unconventionaloilandgasaccumulationanddevelopment,MinistryofNortheastPetroleumUniversity,,HeilongjiangDaqing163318,China)Abstract:AccordingtodevelopmentcharacteristicsoflOWpermeabilityreservoirinMblockofAo’nanoilfield.a(chǎn)dvantagesanddisadvantagesofvariousenhancedoilrecove
5、rymethodsforlowpermeabilityreservoirswereanalyzed.ThenthetechnologyofairfoamprofilecontrolinMblockwithhighwatercutwasresearched.Thenumericalsimulationmethodwasusedtoforecastdifferentschemes;increasingoi1contentandinput—outputratiowereusedasevaluationindexestooptimizethe
6、injectionparametersaffectingtheefrectofprofilecontro1.Theresearchresultsshowthat.inAo’nanoilfield.theimportanceofinfluencingfactorsofairinjectioneffectinturniSgas1iquidratio>foamingagentconcentration>gasinjectionrate~amountoffoamingagent.Theoptimalgasliquidratiois3:1.th
7、ebubbleconcentrationis0.3%,thegasinjectionrateis40m/d,thefoamingagentinjectionrateiS0.5PV.Keywords:Airfoamprofilecontrol;Oxidationatlowtemperature;Optimizinginjectionparameters;Numericalsimulation;Input—outputratio敖南油田M區(qū)塊具有“中孔、低滲、低產(chǎn)”等和度較高,泡沫在此處易破滅,封堵能力低,故驅(qū)特點(diǎn),地層吸水能力差,水井注
8、水壓力高,水驅(qū)方替體系多沿4,TL隙流動(dòng),從而提高了波及系數(shù);向較難控制,容易形成低效循環(huán)。單獨(dú)注氣開發(fā)容縱向上,氣體攜帶泡沫使其流度降低,削弱氣體的易氣竄,開發(fā)效果較差。聚合物驅(qū)具有波及面積大,重力超覆的影響,提高了垂