分层流管道黏壁温度计算模型的建立与验证

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Establishment and Verification of the Wall Sticking Occurrence Temperature Calculation Modelof Stratified FlowPipeline

CHENG Xianwen1，XIONG Jianhua²，HUANG Qiyu1*， TIAN Jiaxing²，YULe1

1BeijingKeyboatoyUbanldastrbuiooginUesityfrole，aggig2 2.Jiangsu Oilfield Branch Office，SINOPEC，Yangzhou，Jiangsu 2250o9，China

Abstract：Low temperature transportation technologycaneffectivelyreduceenergyand economic lossforhigh-watercut gatheringandtransportationpipelines.However，withthepopularizationofgasflooding，thefluidsinmanygatheringpipelines areinthestateofthre-phaseofoil，gasandwater.Inordertoexploretheefectofgasontheadhesionofgeledoilonthe wall， aself-developed presure-bearingstirringtank isusedtomeasure teadhesionmassofgelldoilonthewallunderdifferent conditions.Itisfoundthatthegasdisoledincrudeilcansignificantlyeducetheadhesionofelldoil，whilethetempeature does notchangewithcorresponding massurge;subsequently，agas injectiontest iscarredoutonthehigh watercutgathering andtransportationpipelineonsite，anditshows that withtheincreaseofthegas-oilratiointhepipeline，theminimum inlet temperature decreases from 29∘C to 26∘C ，indicating that the presence of gas improves the fluidityof crude oil; finally，based on the theoretical basis of“wall shear stress=yield stress × coefficient”，a stick-wall temperature calculation model that can be usedinstratifiedflowgatheringandtransportationpipelinesisestablished，ndtheverificationshowsthatthemodelhasa good calculation effect.

Keywords：crudeoilwithdissolvedgas;low temperaturegatheringand transportation;wallstickingoccurrence temperature; gas injection test; stratified flow

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引言

对于高含水油田矿场来说，其集输管道内的综合含水率可超过 85%[1] ，将低温集输技术运用到高含水管道，可极大地减少能源消耗，降低经济投入，同时减少温室气体的排放，保护环境。（剩余24350字）