油气集输相关物性参数研究

大庆石油学院本科生毕业设计(论文)摘要为降低原油集输的自耗气量，合理利用油田气资源，从二十世纪70年代到80年代我国胜利、中原、辽河、大庆等油田相继开展了油气水混输不加热输送工艺的试验研究。大庆油田从1975年开始探索油井不加热集油途径。二十世纪80年代，大庆油田已进入高含水开采阶段，原油集油能耗已占地面工程总能耗78%。油田工业自耗气与油田新兴的化工用气供需不平衡矛盾日趋尖锐。为了缓解此矛盾，急需研究相应的热力计算方法，开发不加热集输辅助运行管理软件，为油田实施和推广不加热集油提供技术支持，以便进一步提高油田整体经济效益和油气资源综合利用水平。本文主要研究了物性参数的计算、压降计算和温降计算等三个方面的内容。在掌握了多相流动规律的基础上，针对不同流动型态确定相应的压降、温降计算公式。最后运用混输管线水力热力计算理论建立了一套油田地面生产环线水力热力计算方法，并用VB语言编制了相应的计算机程序。该程序对油气混输管线的优化设计以及管线的经济运行具有一定的指导意义。关键词：单管；环状；混输管道；流型；不加热集输大庆石油学院本科生毕业设计(论文)AbstractInordertoreducethecrudeoilconsuminggasandusetheoil-gasresourcesreasonably,oilfieldsshengli,LiaoheandDaqingandsoondevelopoil-gas-watertransportationwithoutheatingexperimentalstudyoneafteranotherfromthe1970stothe80s.TheDaqingOilFieldhasexploredthewayoftheoilwelltransportationwithoutheatingfrom1975.Inthe1980s,theDaqingOilFieldenteredthehighwaterytime,andthecrudeoilenergyconsumptionhasoccupied78%ofalandareaofthesurfaceprojecttotalenergyconsumption.Thecontradictorybetweenoilfieldindustryconsuminggasandthedemandofoilfieldemergingchemicalindustryisincisivedaybyday.Inordertoalleviatethiscontradiction,theurgentlyresearchneedcorrespondingthermaldesignmethods,developsthetransportationwithoutheatingauxiliaryoperationalguidancesoftware.Itprovidethetechnicalsupportforimplicatingandpromotingthetransportationwithoutheatingtechnology,inordertoraisetheoilfieldwholeeconomicefficiencyandtheoilgasresourcescomprehensiveutilizationlevel.Thisarticlehasmainlystudiedthreeaspectcontents,isthenaturalparametercomputation,thepressuredropcomputationandthetemperaturedropcomputationandsoon.Afterknowingthemultiphaseflowruleanddesignthereasonabletransportationpipeline,inviewofdifferentflowingstatewedecidecorrespondingpressuredropandtemperaturedropformula.Atlastthispapertakestheadvanceofthemixturetransportspipehydraulicthermaldesignationoftheoi1fieldgroundproductioncirclepipehydraulicthermaldesignationwithVBlanguage.Thisprocedurehascertainguidingsensetotheoilgastransportationpipeline'soptimizationdesignandpipeline'seconomicalmovement.Keywords:single-valve;ring-like;mixturetransportationpipe-line;flowpattern;transportationwithoutheating大庆石油学院本科生毕业设计(论文)I目录第1章概述...................................................................................................................................11.1设计的背景、目的和意义........................................................................11.2不加热集输技术研究现状的概述............................................................21.3本文的主要工作内容................................................................................3第2章混输管路中油气水物性参数计算..............................................................................52.1油水乳状液的粘度和密度........................................................................52.2地面脱气原油的粘度................................................................................52.3油田采出水的粘度....................................................................................62.4表面张力的计算........................................................................................62.5管输条件下相对密度及天然气的粘度....................................................7第3章油气混输管路压降的计算..........................................................................................103.1气液两相管路的特点和研究方法..........................................................103.2气液两相流流型判断..............................................................................123.3两相管路的压降计算..............................................................................163.4油气水三相混输管路的压降计算..........................................................21第4章油气混输管路温降的计算..........................................................................................234.1管线轴向温降计算的基本理论及公式推导..........................................234.2油气混输管道温降的计算......................................................................28第5章单管环状混输管道的温降计算.................................................................................325.1单管生产环线节点换热模型的建立及换热公式推导..........................325.2双管生产环线节点换热模型的建立及换热公式推导..........................34第6章环状单管混输管道水力热力程序介绍...................................................................366.1单管环线设计软件系统功能简介..........................................................366.2软件系统图解..........................................................................................37结论.................................................................................................................................................43大庆石油学院本科生毕业设计(论文)II致谢.................................................................................................................................................44参考文献..........................................................................................................................................45附录1物性参数计算程序代码...............................................................................................47附录2压降计算程序代码.........................................................................................................50附录3分支状温降计算程序代码.......................................................