I摘要题目海上热采井注多元热流体的井筒传热分析摘要在海上稠油热采过程中，多元热流体作为注入介质，提高加热稠油油藏效率是其关键技术，通过有效的对稠油油藏进行加热，达到促进稠油流动的目的。在稠油加热过程中，海水会对其产生影响，导致井筒出现非常大的热损耗，在加剧能量消耗的同时，也会对稠油的质量与产量产生不利影响，因此海上稠油热采一直对如何降低海水的影响极为关注。本设计结合以前陆地井筒传热模型并考虑海上井的特殊井身结构以及影响较为严重的海上环境，专门为建立的海上热采模型配置了热水结构。本文首先验证、评估了海上热采井注的热流体传热模型，确定所建模型的准确性和可用性。其次是在不同条件下改变注入参数得出影响井筒传热的因素。关键词：II致谢IIIAbstractAbstractIntheprocessofthermalrecoveryofoffshoreheavyoil,oneofthemostimportanttechnologiesishowtoefficientlyheattheheavyoilreservoir,soastoeffectivelyreducetheviscosityofheavyoilandimprovetheliquidityofheavyoil,sothattheheavyoilflowsintotheproductionWells.Duetotheinfluenceofseawater,theheatlossofthewellabovetheformationisverylarge,andtheheatlossofthethermalfluidintheoffshorewellboretotheenvironmentdirectlyaffectstheproductionofheavyoil.Therefore,itisveryimportanttoanalyzetheheatlossinthewellboreoftheoffshorethermalfluidinjectionwell.Inthisdesign,combinedwiththeprevioussimpleheattransfermodeloflandWellsandconsideringthespecialwellbodystructureandexternalenvironmentofoffshoreWells,theheattransfermodelofwellborewithnominalhotwaterinjectioninoffshorethermalproductionWellsisestablished.Firstly,theaccuracyandavailabilityofthemodelareconfirmedbyverifyingandevaluatingthewellboreheattransfermodelofmultielementthermalfluidwithhotwaterinjectioninoffshorethermalproductionWells.Secondly,thefactorsaffectingtheheattransferofthewellareobtainedbychangingtheinjectionparametersunderdifferentconditions.IV致谢Keywords:V目录目录摘要................................................................................................................IAbstract.........................................................................................................II1绪论...........................................................................................................11.1选题的目的及意义.............................................................................11.2井筒传热研究现状.............................................................................12海上含多元热流体井筒传热模型建立...................................................42.1海上热采井井筒传热模型.................................................................42.2空气段与海水段.................................................................................52.3地层段.................................................................................................82.4环境温度...........................................................................................103海上井筒注多元热流体井筒传热分析.................................................123.1海上井筒注含热水多元热流体计算模型.......................................123.1.1井筒压力计算模型.....................................................................123.1.2井筒温度计算模型.....................................................................123.2海上热采井注多元热流体井筒传热模型验证...............................133.3海上热采井注多元热流体井筒热损评估.......................................163.4海上热采井注含蒸汽多元热流体热损评估........
