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    • 7. 发明申请
    • METHODS OF CONTROLLING DRILL BIT TRAJECTORY BY PREDICTING BIT WALK AND WELLBORE SPIRALING
    • 通过预测钻头行程和井眼螺旋来控制钻头轨迹的方法
    • WO2018017724A1
    • 2018-01-25
    • PCT/US2017/042876
    • 2017-07-19
    • BAKER HUGHES INCORPORATED
    • SPENCER, Reed, W.UNO, Timothy, P.HANSON, Jonathan, M.
    • E21B44/02E21B44/04E21B44/06E21B7/06E21B41/00E21B45/00E21B47/12G06F17/50
    • G06F17/5018E21B7/06E21B10/00E21B44/00G01V11/00
    • A method of controlling drill bit trajectory in a subterranean formation includes receiving drilling parameters for operating a specific bottomhole assembly (BHA), constructing, with a computer processor, a directional drill-ahead simulator including a computer model of the BHA and the subterranean formation, calculating axial motion and lateral motion of a drill bit connected to a bottom end of the BHA using formation parameters and drilling parameters, predicting bit walk of the drill bit by accounting for and calculating contact forces and frictional forces between the BHA and a wall of a borehole in the subterranean formation using the computer model of the BHA, and determining an adjusted drill bit traj ectory to account for the predicted bit walk. The method includes determining adjusted drilling parameters for operating the BHA to substantially follow the adjusted drill bit trajectory and operating the BHA according to the adjusted drilling parameters.
    • 一种控制地下地层中的钻头轨迹的方法包括:接收用于操作特定底部钻具组合(BHA)的钻探参数;利用计算机处理器构建包括BHA和地下地层的计算机模型的定向钻前模拟器; 使用地层参数和钻探参数计算连接到BHA底端的钻头的轴向运动和横向运动,通过计算并计算BHA和墙壁之间的接触力和摩擦力来预测钻头的钻头行程 使用BHA的计算机模型对地下地层中的钻孔进行测量,并且确定调整后的钻头轨迹以说明预测的钻头行程。 该方法包括确定用于操作BHA的经调整的钻井参数以基本遵循经调整的钻头轨迹并且根据经调整的钻井参数来操作BHA。
    • 10. 发明申请
    • DESIGNING OBJECTS USING LATTICE STRUCTURE OPTIMIZATION
    • 用格子结构优化设计目标
    • WO2017139033A1
    • 2017-08-17
    • PCT/US2016/067949
    • 2016-12-21
    • AUTODESK, INC.
    • BENJAMIN, DavidNAGY, DanilZHAO, Dale
    • B29C45/73B29C67/00G06F17/50
    • G06F17/50G06F17/5018G06F17/5095G06F2217/08
    • A design engine for designing an object using structural analysis. The design engine generates a lattice structure for the object comprising a plurality of nodes and a plurality of lines connecting the nodes. The lattice structure is optimized to remove one or more lines using structural analysis based on at least one load-related design requirement. Several design options are provided for generating and optimizing the lattice structure. The design engine then generates a 3D model of the object by thickening each line of the lattice structure into a pipe volume. The thickness of each pipe is determined using structural analysis based on the at least one load-related design requirement. The 3D model represents the volume of the object and is exportable to a fabrication device.
    • 用于使用结构分析来设计对象的设计引擎。 设计引擎为包括多个节点和连接节点的多条线的对象生成网格结构。 根据至少一个与负载有关的设计要求,使用结构分析来优化网格结构以去除一条或多条线。 提供了几种设计选项来生成和优化晶格结构。 然后,设计引擎通过将网格结构的每条线加粗成管道体积来生成对象的3D模型。 基于至少一个与负载有关的设计要求,使用结构分析来确定每个管道的厚度。 3D模型表示物体的体积,并可输出到制造设备。