公开(公告)号：US20140136168A1

公开(公告)日：2014-05-15

申请号：US14077748

申请日：2013-11-12

申请人： Reed Spencer ,  Jonathan M. Hanson

发明人： Reed Spencer ,  Jonathan M. Hanson

IPC分类号： G06F17/50

CPC分类号： G06F17/5009

摘要： A method of predicting behavior of a drill bit includes: generating, by a processor, a representation of at least one component of the drill bit, the representation representing a three-dimensional object as a combination of at least two two-dimensional polygons; representing a borehole formed in an earth formation during a drilling operation by generating a mathematical representation of a borehole surface defined by a plurality of nodes; simulating operation of the drill bit within the borehole with the application of one or both of axial load and a side load; determining whether the three-dimensional object is in contact with the borehole surface by determining if one of the nodes is within both of the two-dimensional polygons during the simulation; and estimating an amount of lateral motion of the drill bit during the simulation.

摘要翻译： 预测钻头行为的方法包括：由处理器生成钻头的至少一个部件的表示，所述表示代表作为至少两个二维多边形的组合的三维对象; 代表在钻井操作期间在地层中形成的钻孔，通过产生由多个节点限定的钻孔表面的数学表示; 通过施加轴向载荷和侧向载荷中的一个或两个来模拟钻孔内的钻头的操作; 通过在模拟期间确定其中一个节点是否在二维多边形内，确定三维物体是否与钻孔表面接触; 以及在模拟期间估计钻头的横向运动量。