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