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1、本科生毕业设计(论文)题目:稠油注蒸汽降粘方法研究学生姓名:****系别:*****专业班级:*****指导教师:*****年月日摘要我国的稠油储量大、分布广,产量占总产油量的比例较大,如何降低稠油的生产成本,提高经济效益,是油田走向国际市场的重要研究课题之一。其开采技术一直是石油界探索的问题。稠油在我国的石油资源中所占比例较大,其开采技术一直是石油界探索的问题。利用注蒸汽方法可以降低原油粘度并通过高温清除粘土及沥青沉淀物,提高近井地带油层渗透率,焖井散热后开井采油。以往多采用笼统注蒸汽的注入方式,即同时对几个开发层系注汽。但是,由于各层系
2、的地层压力、渗透率原油物性等存在差异,有时会使层间注汽量分配不合理,甚至出现某个层位的蒸汽带急剧推进,达不到预期的注汽效果。本文主要研究稠油注蒸汽降粘方法,主要内容包括注蒸汽驱油的特点、稠油注蒸汽采油技术,以及所用的试验研究方法等。通过对稠油注蒸汽降粘方法的研究,了解注蒸汽降粘方法的优点,以便于更好的用于现场,提高稠油的采收率。关键词:稠油;注蒸汽;降粘ABSTRACTChina'sheavyoilreserves,widedistribution,yieldalargerpercentageofthetotaloilproduction,
3、howtoreducetheheavyoilproductioncostsandimproveeconomicefficiencyaretheoiltointernationalmarkets,oneoftheimportantresearchtopics.Miningtechnologyhasbeentheoilindustryofitsexploration.HeavyoilisinthelargerproportionofChina'soilresources,itsminingtechnologyhasbeentheissueint
4、heoilindustryexploration.Usingsteammethodcanreducethethroughputofcrudeoilviscosityandhightemperaturethroughtheremovalofclayandasphaltsediments,improvereservoirnearwellzonepenetration,openwellsafterrapidcooling.Inthepastusingofthesteaminjectionintoageneralway,thatis,injecti
5、ngintoseverallayersofsteamatthesametime.However,duetochangesofpressureandthepermeatyinvariousfloorsoftheformation,sosometimesdistributionofinjectionwasunreasonable,andevenabitofsteamwiththerapidprogress,cannotexpecttheeffectofsteaminjection.Thepaperismainlystudyingthemetho
6、dofthesteaminjectiontotheheavyoil,soastolowertheviscosity.Themaincontentincludesthefeaturesofsteaminjection,thetechnologyofsteaminjection,andsoon.Bystudyingthemethodoflowingviscosity,wecanknowabouttheadvantagesofsteaminjectionandimprovetheproductionoftheheavyoil.Keywords:H
7、eavyoil;Steaminjection;Lowertheviscosity.目录第一章概述.....................................................11.1稠油的定义及分类...........................................11.2稠油的性质.................................................2第二章国内外稠油开发现状及存在的问题...........................32.1国内外稠油的发展状
8、况......................................32.2国内外稠油的开采方法....................................