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时间:2020-03-26
《一种新型原油分散降粘助排剂的研究评价及应用.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2第01432年卷第5月5期当代化工Vo1.42,No.5ContemporaryChemicalIndustryMay,2013一种新型原油分散降粘助排剂的研究评价及应用王俊伟(中国石油辽河油田公司,辽宁盘锦t24109)摘要:超稠油中低周期油井原油粘度高、采出程度差、回采水率低、严重影响油井开发效果。传统方法在注汽前向井内注入磺酸盐助排剂,改善吞吐效果,现场应用取得一定效果。但磺酸盐助排剂体系表面活性偏低,洗油性能、原油降粘率、润湿性改变性能有限,并且其抗盐及抗硬水能力不强,应用于低周期油井效果不十分理想。因此研究开发新型原油分散降粘助排采油
2、技术,改善中低周期超稠油油井的吞吐效果。本文介绍了新型原油分散降粘助排剂的原理及配方设计,通过室内试验并对其性能进行了相关评价。通过现场应用证明该新型原油分散降粘助排剂能有效改善中低周期超稠油油井的吞吐效果。关键词:分散降粘;超稠油降粘;降粘助排;配方研究;性能评价中图分类号:TE624文献标识码:A文章编号:1671—0460(2013)05—0676—05StudyonEvaluationofaNewOilViscosityReducingCleanupAgentandItsApplicationWANGJun.wei(PetroChinaL
3、iaoheOilFieldCompany,LiaoningPanjin124109,China)Abstract:Theviscosityofcrudeoilfromsuperheavyoilwellswithmiddle—lowcycleishigh,therecoverypercentispoolandwaterrecoveryrateislow,whichcanseriouslyaffectdevelopmentefectoftheoilwells.Thetraditionalmethodistoinjectsulfonatecleanup
4、agentintothewellbeforeinjectingsteamtoimprovestimulationefect,itsfieldapplicationhasachievedcertainefect.Butsurfaceactivityofthesulfonatecleanupagentsystemislow,itsscrubbingoilperformance,crudeoilviscosityreductionrate,changingwettabilityperformancearelimited,anditsresistance
5、tosaltandsofteningwatercapabilityarenotstrong,itsapplicationefectinoilwellswithlowcycleisnotveryidea1.Therefore,it’Simportanttoresearchanddevelopnewoilviscosityreducingcleanupproductiontechnologyforimprovingsteamstimulationefectofsuperheavyoilwells.Inthispaper,principleandfor
6、muladesignofnewoilviscosityreducingcleanupagentwereintroduced,itsperformancewasevaluatedthroughindoorexperiments.Thefieldapplicationhasprovedthatthenewtypeoilviscosityreducingcleanupagentcaneffectivelyimprovesteamstimulationefectofsuperheavyoilwellswithlowcycle.Keywords:Dispe
7、rsionviscosity;Superheavyoilviscosityreduction;Viscosityreducingcleanup;Formulationresearch;Performanceevaluation曙光油田超稠油共动用含油面积48km,地质层存水较多,油相渗透率降低。储量2.08×10t,可采储量4965.12×104t,标定采(2)原洫l生质差:①原油粘度高,地面脱气收率23.79%。年产油l10.03x104t,占全厂产量的原油粘度50时一般大于5.0x10mPa·S,最高74.76%,超稠油对维持曙光油田及辽河油
8、田产量稳可达40x104mPa·s,导致原油流动性差,开采难定具有重要的现实意义。但由于超稠油特有的性质度大。②超稠油中重质成分含量较高
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