特高压井口节流阀节流性能及结构分析

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中图分类号：TE931 文献标识码：A DOI：10.12473/CPM.202407066

Zhou Tianming，He Qiang，Wang Junyu，et al.Throtling performance and structural analysis of UHP wellhead throttle valve[J].China PetroleumMachinery，2025，53（7）：75-82.

Throttling Performance and Structural AnalysisofUHP WellheadThrottleValve

Zhou Tianming1.²He Qiang1Wang Junyu³Dai Qiping1.2Han Chuanjun' （1.MOEKeyLaboratoryforOilandGasEquipmentatSouthwestPetroleumUniversity；2.CNPCBaoj OilfieldMachineryCo.， Ltd.;3.CCDCDownhole Service Company）

Abstract：The throtle valve，，as an ultra-high pressure （UHP）wellhead device，is susceptible to erosion failure.This paper proposes thedesigns of spool and anti-sprint protection sleeve for double-wedge throttle valve，and analyzes theflow field characteristics of nine spools of the double-wedge throtle valve at diferent openings.The results show thatthespools ofthedouble-wedgethrotle valvearebetter-performed in erosionresistance than thatof the single-wedge throtle valve.With the increaseof spool stroke，the velocityof drillingfluid passing throughthe wedge-shapedsurfaceofthespol increases，andthedrillingfluid hasa strong erosion to the spooland the wall surfacebelow thespol.Among the9types of spoolsof the double-wedge throttle valve，the convex symmetrical spool has the best throtling and anti-erosion performance，and its linear regression coeffcientof pressure drop curve is 99. 6% . The cavity size has a significant impact on the performance of the throtle valve：expansion of the cavity size by 30 mm leads to a decrease of maximum velocity by 3.87% on average.After the spool anti-sprint protection sleeve is installed，the maximum fluid velocity decreasesby an average of 30. 35% ，extending the service life of the spool.The research results provide areference forthe design and application of UHP wellhead throtle valves.

Keywords： UHP wellhead; wedge throtle valve;double-wedge surface; erosion and wear; design optimization

0 引言

节流阀是石油和天然气钻采过程中使用的关键装置之一，其主要作用是控制井口流体的流量和压力，以确保钻井或油气生产过程的安全。（剩余10233字）