简介：Inordertosolvetheproblemsrelatedwithprocessinglow-qualityLiaohehighlysourcrude,theLiaohePetrochemicalCompanyhasexploredthepossibilityinoptimizingtheprocessingofhighlysourcrudebyadoptingdifferentprocessschemesdependinguponthepropertiesofthehighlysourcrude.TheLiaohenaphthenic-basecrudeoilwithlowfreezingpointisearmarkedformanufactureofnaphtheniclubeoilsandheavytrafficpavingasphalt,whiletheextra-heavyLiaohecrudewithhighacidnumberisrouteddirectlytodelayedcokingunitcoupledwithcorrespondingcorrosionpreventingmeasures,resultingintacklingtheproblemofequipmentcorrosionarisingfromrefiningofLiaohehighlysourcrudetoobtainlightdistillatesfromLiaoheheavycrudethroughashortprocessscheme.

简介：ManyKoreanEnglish-languageteachersaresouringover(为……而烦恼)theplanningofthenation’sEnglisheducationsystemasmanyof

简介：

简介：Withanalloycontentashighas80%ormore,Ni-basedOCTGisastrategicproductsrelatedtothestateenergysecurity,mainlyappliedintheexploitationanddevelopmentofsourgasfieldswithcomplicategeologicalformation,hightemperature,highpressureandseverecorrosivewellconditions.Ni-basedOCTGisregardedasthepipeproductwithmosthightechnologiesduetothecomplexityandgreatdifficultyinmanufacturingandrigorousrequirementsinqualitycontrol.Inthispaper,thetechnicalfeaturesandqualityrequirementsofNi-basedOCTGaresummarized,andthequalityandpropertiesoftheNi-basedOCTGproductsofBaosteelareintroducedindetail.WiththehelpofSEM,XPSandTEM,thecorrosionmechanismofNickle-basedOCTGintheenvironmentscontainingH2S,CO2,Cl-andelementarysuifurarealsoanalyzed.

简介：过去曾有人研究始新统Yegua组剪切带性质以评价断层封闭能力。井深3029m处一块长11m的Yegua组砂岩岩心显示出高剪切层，其倾角随深度从10°增加到30°，孔隙度和渗透率分别为10％～12％和1～5md(分别降低10%～16％，20～60md)。该砂岩中孔隙大多数为次生孔隙，剪切带的孔隙因粘土涂抹和剪切作用而变形和消失。过去曾用光学显微镜和扫描电镜(SEM)来研究剪切带物理性质。剪切带附近孔隙度和渗透率的降低产生一个毛细管遮挡层，阻止了烃类散失，从而形成分隔化油藏。剪切带的初始毛细管排驱压力为100psi(相当于6．89×10^5Pa)，足以圈闭平均高度达210m的油柱和70m的气柱。