Abstract
Abstract Active-polymer attracted increasing interest as an enhancing oil recovery technology in oilfield development owing to the characteristics of polymer and surfactant. Different types of active functional groups, which grafted on the polymer branched chain, have different effects on the oil displacement performance of the active-polymers. In this article, the determination of molecular size and viscosity of active-polymers were characterized by Scatterer and Rheometer to detect the expanded swept volume ability. And the Leica microscope was used to evaluate the emulsifying property of the active-polymers, which confirmed the oil sweep efficiency. Results show that the Type I active-polymer have a greater molecular size and stronger viscosity, which is a profile control system for expanding the swept volume. The emulsification performance of Type III active-polymer is more stable, which is suitable for improving the oil cleaning efficiency. The results obtained in this paper reveal the application prospect of the active-polymer to enhance oil recovery in the development of oilfields.
Highlights
IntroductionAeoftotsRAstpssavptoehhhwiiinicwioabhntftnrleietyyyehplseesediigy,invdnotnpeaoponamretiitrhgwnttmofagrlshh-raectlpvpctashteeeeyiyroinptwoccolintvm:paocLcltlehrlteegeuiAychoeiehreveaael,emmspcioeervoplctcmtite-ioehosiletebaicplelrevhefr.hertaorfaraedmenyafeTaaeild-niesngytcpccrhacpieotiacormoctimponeerptefeirchvvoevclpgoaeenyoteeteretefelsrrthmcimmerrridefslrctecyyyffeoeirhoufeuai.wscrinstieprRmnttaclmchneteiiaseiaacoceoccareieottatbtthssfneniihnxwitliinonuvlnoertcopecceprncaae,lacnofhyo,taerd-csuths.lappoolanwitoelToaluseofrsooadsvghhvanhdpsgllfmyreeyyyeiceoeersdclispmtmtodoonwicthhdeirneeultzpecsereieetmrteifpoirswmoorrfchszfeuosfseaiuaaeeaaeel,s,rlfpiKCaLmbsLtArcnfndplttosnruhmvewiawwttseelraeriddett,ranitieeoabrnahevotatiolyhhalAotdvasddrysgeesausdnenbwiFpi(ofubTtisex-cc∗ucaAcsSuwitzrdTaplosrflhnptiohhaoteeuelcefydfieciro,eiieiavteransAaeelmdpvntiegloaeccAffdecncybthtgefiorelresfonant[th-peetsodmaeei∗lalepsr1daandTtIatoleeo:srairnfr,deoniiaienofyaopttneitmoLdivivttedeslTrnbrtpegcnrrframyhr..saiiemndimithpesssitmaod.trlADieotdatt:eocchivrerunouahhfeitIInnioooe∗1eeiTiayIoflnnnddKbeerasr7It------..daegergeBerIeruroancoldw3mscndwooBtbaiaocp(r1cTpogan7es6heit6ipuaacrccf,hiiooen]ebhalltc-llao%et,ttntplallt9fh1ecctoilliiiyiuei(i-navo5[avvra)remwihsezg4vd.eImnf3.eopnrefdeeAunilaae,eTon,mafuItc,dnppsp5dpesorinppbsr2huhttaau)raTflyresriorerhooo1.rueleosoawalsktecliherelmolhdlfirItvdlydenli,-onryycalwonangeftoeeemouuFiaceitmomVyattsntlgoesdciaooehecencclht-lpuneeobrre.egetrdltootecfeerotidieiievoycrrSrroliovoinsmlntfnciuneelmfiheaeocoecunly(enociresbeageiaspnnaHerrlxyvcdoucaspaiwarxyvueennarmoe,htaereilfilonroprecesr4tethaernwntxaamcslsayomvyirpalemaacy.c[ceotlaah,l1hevnoter1ssmlrthdptncnu,iaapuoeTaihoaa0eefvdataocoil,ntrev5dtcatehepcse,eOhronnfryoiivre.hdtgeoreietloDris5spfhgoirmewaedxgniifrdelt]terofnileoeafceocrinrhh)o,luofetieilosoeeon;effhtnyldlcscodeescvcoaoropxrrllsdcwme(anoedieaeediiretpvgsrioVeifanglvulliv-iwnlestfmipyeyuhnifltroeeislehesp,le.t)-frtrslileeagcxirrcrs-orapdseoepeeHwsaettytegtodpaecraoaytaiudnwhaamf.snenosuoelvaxaeuclptlcacna6iowTitmnrophrbpgsa6oltateesahi0ilawihyhwhleieirm.celsaseu1Lll1p%ebrcietvboiom8oLnaud]pnrsmeseottupeeg)fer.yvyetfeisrngeto8ifee;trfrnarstosednoeuh,oewmftnot%hon(aai.e.deihrxmretosinDfcqeptpraahhefiuWupptoofpetfiFaaaaanurredohlcrdiiie)gntponsviqdrchcnodtrrerrhstramdtiiweripetdiihivapchafo,enmvophetfaielfetepdnupenhieacitioguiacadachtnheeciolian.oacfnhishcsaLioeytnhlegsyftyltcrdidttniwyieohtamrmcptaailsfwons(oi(fmstonlrabchs,odceibn1uoo.nuonaceint-eosntiaareesiFi4rtraldhcnivcuedaomoedtraeflmta)onhaaeeelsuretff,,lr..ta[erdsh1abndpip3leenpio,itezsna(ehDsiestignieamerdetedineadvnotocsn[uoebd4mesitaaeot,da(loilsCciliio)ritlmiioysnynpathrethf Keywords: active-polymer; property; molecular size; EOR viscosityD(;seeeenm[1it1ui,olsLniefi1mc.a4mt]i)oa;n(1v4i.)8mt]e)h;aeIs(nvuL)retehtohimnseaoaLrlrdeeticocpulnelaaa,irrrSdscciaopztenateisarrinescrdtoiannvngisdsicosRotfishnaietgyopmoaofiferataeoncrftyiwvoteepwrppeooouolsysfiemtaedemgtroseondeurlaatroLrseofonratrhd bra, acting on an evnaalmuaetdioTnypme oI adnudleTy(speeeII[I5a,cPtirvoeppoosliytmioenr,9r.e2s]p).eTcthiveeelyx. aTmheple (i) is a spec examples (iii), (iv) aerxepsepriemceianlt coafsmesoolefc(uvl)a.r size and viscosity established
The characteristic absorption peaks of olefinic double bonds appeared at 963.76 and 858 cm-1, which proves that Type I active-polymer is obtained by polymerization and the double bond were remained in the polymerization process
The results show that the oil recovery of the Type III active-polymer solution with the same viscosity is better, which is mainly attributed to the formation of emulsion in the oil displacement process is more stable and remaining oil is more likely to be carried out of the formation
Summary
Let A, A∗ denotehaatLtheoenaabridlitpyaoifr eonnlaVrg. iWnge fclaoonddinegtesrwmeipntevwolhuemthe.erThAe, A∗ is self-dua By [13, Lemma 1.3] eLaeiccha emigicernosscpoapceewoafsAu,sAed∗thoaesvadliumateenesmiounlsoifnyien.gLaebti{liθtyi}di= denote an Active polymers as a new type of chemicavlaoliul desispolfacAe.mFeonrt o≤f oi il≤didsplleatcevmi denetneoftfeiciaenθciy-.eigenvector for A. Agent have the advantages of both surfacwtahnetnaenvdeproAly∗maecrt,s on the basis {vi}di= in an irreducible tridiagonal fashion. Enhanced Oil Recovery (Northeast Petroleum Unisivearssittya)n, dard ordering of the eigenvalues of A∗ (see [7, Proposition 8.7])
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