超深井潜油电泵井下电缆电压损耗的多场耦合仿真分析

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中图分类号：TE933.3 文献标志码：A 文章编号：1000-7393（2025）-04-0442-10

Abstract：Thevoltagelossinthedowholecablefortheelectricsubmersible pumps inultra-deewelldrectlyafects thestartig performance ofthe motor.Excesivecablevoltage dropwillcause the motor terminal voltage significantlylower than therated value， resulting inisuficient tartigtorque.Multi-feldcouplingsmulationistekeytoteaccuratepredictionofcablevoltagelosand thestudyofvoltage droplaw.Basedonte multi-physics fieldcouplingofelectro-themal-flow，asimulationmodelforpredictingthe voltageossindowholecableforelectric submersible pumpsinultra-depwellsisestablished.Thesynergistic mechanismofcable Jouleheat，geothermal gradient，andtubingfluideattransferonvoltageloss issystematicallanalyzed.Theefectsofurnt intensity，geothalgadient，andcablestructureparametersonvltagelossarexploedndtiiationuggestiosaegien. Theresearchresultsshowthat the voltagelossisstronglycoupled withthecable temperaturefeld.ThecontributionofJoule heat， tubing fluid heat transfer，and geothermal gradient to cable temperature rise accounts for 54.68% 6.09% ，and 39.23% ，respectively. Thevoltagelossicreases nonliearlywithdepthThecurrnt intensityhasasigniicanteffectonthevoltageloss.Thevoltageloss can reach 32.48% when the working current is 140A for the cable with a pump depth of 6， 000m in ultra-deep wells， which will have aserious impactonthe motorstart-up.Theestablished multi-fieldcouplingsimulationmodelrealizes thesimulationanalysisofcable voltag losndtmperaurefeldinulra-pelladessngtechallengefprdictodviationusedbyinoinglti-fed couplingeffectintraditionalmethods，andprovidesstrongtechnicalsupportforthedesignandselectionofdownholecablefor electric submersible pumps.

Keywords：ultra-deewell;electricsubmersible pump;downolecable; voltagelos;multi-feldcouplingsimulation;tepeature field;cableselection

0 引言

深井潜油电泵（以下简称电泵）作为油田开采中的关键设备，其稳定运行依赖于井下电缆对潜油电机的高效电能传输。（剩余18415字）