This paper discusses the prediction of the drill stem torque and bit forward direction in an offshore horizontal well by nonlinear FEM.
探讨了非线性有限元在预测水平井钻进中的钻柱扭矩及钻头前进方向的应用。
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By taking advantage of rotating centrifugal force and the supporting effect of eccentric short drill collar, we cut off the axis inclination of bit, and avoid well inclination.
Taking use of the shock absorber, it can raise the service life for drillbit and drill tool, speed up drilling, get rid of drilling jumping, well protect surface equipments and drilling tools.