淺層稠油油藏蒸汽驅(qū)注尿素調(diào)驅(qū)機(jī)理及技術(shù)研究.pdf

1、y79t721～79，理，。r二j砷：博士研究生畢業(yè)論文論文題目：淺層稠油油藏蒸汽驅(qū)注尿素調(diào)驅(qū)機(jī)理及技術(shù)研究專業(yè)：研究生：指導(dǎo)教師：副指導(dǎo)教師：一堂氫里亞基三壅一一一選建蝗：莛圭墨筮撞墼繭墨盔墨堂一墼撞墼高墨中國石油勘探開發(fā)研究院二零零五年五月ABSTRACTSteamchannelingisthemostdelicacytechnicalproblemintheexploitationofheavyoilbyhuff＆puffands

2、teamfloodingwhichisalsotheprincipleproblemrelativetowhethersteamfloodingcangetsuccessornotInChina，mostoftheheavyoilreservoirbelongstocontinentaldepositwithseriousheterogeneityandserioussteamchannelingsuchaschannelinginbi

3、gpore，inhighpermeablelayerandalsogravityoverriding。InthepapeEthoroughinvestigationonthesteamchannelingduringsteaminjectionhasbeencardedoutwhichshows，forheavyoilreservoirinChina，itisverydifficulttogetpersistentresulttoplu

4、gandcontrolprofilebyinjectinghigh—temperaturepluggingagentsThusthepaperbasedonthephysicalsimulationandnumericalsimulation。paysmostattentiontostudythecombinedtechnologyofprofilecontrollingandfloodingforsteamfloodinginshal

5、lowheavyoilreservoirwhichincludesagentprescription，itsmechanismandfieldimplementprojectTheresearchachievementshavebeenappliedintofieldpilottestwhichgetsbettersocialandeconomicalprofitThemaininnovateresearchachievementsof

6、thispaperareasthefollowing：(1)Inthepaper，theagent，whichiscomposedofcarbamideandsurfactant，isfirstlyputforwardtocombineprofilecontrollingandfloodingforsteam—injectionheavyoilreservoirwiththemechanismsasfollowing①Itcanincr

7、easethesteamsweptvolumewiththeresistancefactorofnearly10underhightemperature；②Itcanenhancetheoildisplacementefficiencyby10％anddecreasetheoilviscositybymorethan95％③Addingcarbamideintosteamcanquicklyexpandsteamchamberincre