Abstract
As the “throat” of the drilling well control system, ram blowout preventers (BOPs) can effectively prevent blowout accidents. However, the ram shear mechanism under complex working conditions is unclear, and it is difficult to evaluate the ram BOP shear force, leading to frequent shear failure accidents in oilfields. Aiming at the above problems, this paper takes the double-V ram BOP as the research object, and integrates the methods of theoretical analysis, simulation modeling, and test verification to analyze the shear force in the pipe shear process under both static and moving conditions. A ram BOP shear force evaluation method is proposed based on equivalent stress. Finally, by comparing with calculation data and experimental data, the error between them is less than 5%, demonstrating the applicability and effectiveness of the proposed method. The research results can provide a theoretical basis for oilfield operations of ram BOPs.
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