底部钻具组合性能分析的传递矩阵方法

Transfer Matrix Method for Analysis of Bottom Drillstem Assembly.

在介绍传递矩阵方法处理问题的基本原理后，用传递矩阵方法分析弯曲井眼内多扶正器底部钻具组合的力学性能，并建立了能适合于任何底部钻具组合变形和受力计算的模型，推导出计算钻头侧向力、扶正器约束反力和扶正器处内弯矩等计算公式。研究表明，用传递矩阵方法处理底部钻具组合的力学问题，具有简捷、准确和使用规律性强、程序设计简单等特点。

After discussing the principle of treatment by the transfer matrix method. this article makes an analysis of the mechanical properties of the bottom drillstem assembly with multiple stabilizers in curved holes by using this method, establishes a model suitable for calculating the deformation and forces of any bottom drillstem assembly,and works out the equations for calculating the side forces on the bit, the restrain reaction of the stabilizers and the internal bending moments at the stabilizers.