Elastic Bending Deformation of the Drill Strings in Channels of Curve Wells

• 作者: Nabil Wanas Musa
• 来源期刊: 现代机械工程(英文)
• 学科: 数学
• 关键词: Curvilinear DRILLING ELASTIC Bending CURVE Well Circular Friction Resistance FORCES
• 年，卷（期）: 2017,（1）
• 页码范围: 1-7
• 页数: 7页
• 分类号: O1

摘要

The problem about identification of elastic bending deformation of a drill string in a curve wells based on the theory of flexible curved rods and the direct inverse problems of drill string bending in the channels of curvilinear bore-holes is stated. The problem is solved which determines the resistance forces and moments during performing ascending-descending operations in curvilinear bore-holes with trajectories of the second order curve shapes. The sensitivity of the resistance forces relative to geometric parameters of the bore-hole axial line trajectories is analyzed.