闸板防喷器剪切能力分析优化及钻杆参数匹配
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中图分类号：TE921文献标识码： DOI： 10.12473/CPM.202409068
Abstract：Ram blowout preventer is an important component of wellhead control safety system，and it is necessary toensure that itcan timelycutoff thedrillpipe in case of emergency toachieve safe kiling well.Therefore， in the paper，a finiteelement simulationshear model was established first based on the Johnson-Cook constitutive model，and the accuracyof the model was validated by comparing it with experimental data from literatures.Then， the effcts of parameters such as V-shaped angle，edge chamfer and blade thickness on shear performance were studied，and the maximum shear force and stressofcommon drill pipes with diferent outer diameters and wal thicknesses were calculated according to the optimal structural model.Finally，based on machine learning，the data were trainedand fitted toobtain the model with the highest accuracy，and the fiting formula was provided.
The studyresults showthat the errorof the modelis within the allowable rangecompared tothe test results，and the modelhas higher accuracy.The edge chamfer shows a negative corelation with the maximum shear force but a positivecorrelation with the maximum stress.As the V-shaped angle increases，the maximum shear force increases first and then decreases，and the maximum stress decreases first and then increases.When the V-shaped angle is （20 165∘ ，the shear force reaches the peak.The influence of blade thickness on shear force is very small，has no obviouslaw，and can beignored.The prediction effectof theridge regression model is thebest，with acoefficientof determination as highas O.97.The fiting formula has highaccuracy andreference forthecalculation of shear force.The study results provide some reference for the prediction of maximum shear force of the ramand the selection of ram blowout preventer for different drill pipes.
Keywords：ram blowout preventer；shear force；analysis and optimization；drill pipe parametr matching numerical simulation；machine learning
0 引言
随着石油钻井作业逐渐向深水、超深水井方向发展[1-4]，其作业面临的条件愈加苛刻。（剩余13401字）
