... ECD equivalent circulating density 当量泥浆密度MT metric ton 公制吨 BHA bottom hole assembly 底部钻具组合 DST drill stem test 钻具测试 ...
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A mechanical model of bottom hole assembly (BHA) with eccentric bits is established and the solution of this model was given by means of numerical method.
采用静力分析的方法，建立了偏心钻头底部钻具组合的力学模型，并完成了对力学模型的求解。
The force and deformation of bottom hole assembly (BHA)are calculated by the gap-element method, in consideration for the bending effect and contact state of BHA.
考虑下部钻具组合的弯曲效应和接触状态，运用间隙无法对下部钻具组合进行了受力变形计算。
The basic assumptions, equations and boundary conditions for bottom hole assembly (BHA) analysis were discussed.
讨论了下部钻具组合分析的基本假设、基本方程和相应的边界条件。
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