基于Finnie冲蚀模型的井口八通冲蚀预测及施工参数优选
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中图分类号：TE934.2 文献标志码：A 文章编号：1000-7393（2025）-04-0500-12
Abstract：Erosionand wearof theeight-waypipelineatthefracturing wellheadiacriticalchallenge afectingfracturingeficiency. Currentlysomeerosionmodelsareinaccurateinpredictingtheerosionof thewellead eight-waypipeline.Terefore，researchona new methodforpredictingtheerosionof te welleadight-waypipelinehasbencariedout.Basedonthefiniteelementnumerical simulationmethod，ageometricmodelofthefracturing wellheadeight-waypipelinewasestablished.Usingactualfracturing operationdatarosionmodelssuchastheGenericmodel，Okamodel，andFine modelwereconstructedrespectivelyforrosion simulation.Theerosionratesimulationresults werecomparedwithteactualerosionrateofthewellheadeight-waypipelin，andthe accuracyof thepredictionresultsofeach erosion model wasanalyzed.It wasconfirmedthatthe predictionresultsoftheadopted Finnieerosionmodelweremoreacurate.SbseqentlyasedontheFinierosionmodel，esearchwascoductedonteifluence mechanismof variousoperation parametersonerosionand wear.Theresultsshowthatfortheerosion simulationof thewelead eight-waypipeline，epredictioaccuracyoftheerosionratebyothererosionmodelsiselativelylow，whilethepredictionaacy of the Finnie erosion model reaches 90.32% .Based on the Finnie model， the influence mechanism of different operation parameters onthe pipeline wallerosionratewasstudied.Byoptimizingoperation parameterssuchas injectiondisplacementand particle diameter， the erosion rate predicted by the model after parameter optimization is 19.12% lower than that predicted under the original operation parameters，and 11.29% lower than the actual erosion rate under the original operation parameters.The Finnie erosion modelcanacuratelypredicttheerosionofthewelleadeight-waypipeline.Itisrecommendedtoevaluatethe influenceofoperation parameters ontheerosionratebasedon theFinieerosion modelandadoptamorereasonablecombinationofoperation parameters to reduce the erosion rate.
Key words： fracturing Manifold;Finieerosionmodel;erosion prediction；numericalsimulation;construction paramete1 optimization; erosion rate
0 引言
在压裂施工过程中，压裂井口装置需要承受高压流体及砂粒的冲刷，工作环境恶劣且流场复杂，而常用的井口八通式压裂头处作为压裂液汇聚位置，冲蚀磨损尤为严重[1]。（剩余21005字）
