公开(公告)号：US09976405B2

公开(公告)日：2018-05-22

申请号：US14070130

申请日：2013-11-01

申请人： Andreas Hohl ,  Mathias Tergeist ,  Hatem Oueslati ,  Christian Herbig ,  Jayesh J. Jain ,  Hanno Reckmann ,  Lance A. Endres

发明人： Andreas Hohl ,  Mathias Tergeist ,  Hatem Oueslati ,  Christian Herbig ,  Jayesh J. Jain ,  Hanno Reckmann ,  Lance A. Endres

IPC分类号： E21B44/02 ,  G06F17/50

CPC分类号： E21B44/02 ,  G06F17/5086

摘要： A method for reducing drill tubular vibrations includes: constructing a mathematical model the drill tubular having mass distribution, material stiffness and material damping; constructing an equation of motion of the drill tubular in one of a time domain and frequency domain; transforming the equation of motion into a modal domain equation of motion to provide a mode shape of the drill tubular at an eigenfrequency, the mode shape providing an amplitude at a position along the drill tubular; comparing the amplitude at the position along the drill tubular to a threshold amplitude value; modifying at least one of the mass distribution, material stiffness and material damping if the amplitude exceeds the threshold value; and iterating the above step until at least one of the amplitude of the latest mode shape at the position is less than or equal to the threshold amplitude value and a predetermined constraint limits the modifying.

公开(公告)号：US11021945B2

公开(公告)日：2021-06-01

申请号：US15970585

申请日：2018-05-03

申请人： Andreas Hohl ,  Mathias Tergeist ,  Hatem Oueslati ,  Christian Herbig ,  Jayesh J. Jain ,  Hanno Reckmann ,  Lance A. Endres

发明人： Andreas Hohl ,  Mathias Tergeist ,  Hatem Oueslati ,  Christian Herbig ,  Jayesh J. Jain ,  Hanno Reckmann ,  Lance A. Endres

IPC分类号： E21B44/02 ,  G06F30/17

摘要： A method for reducing vibrations in a drill tubular coupled to a drill bit configured to drill a borehole in a formation includes: constructing a model of a system having the drill tubular, the model having a mass distribution, a stiffness, and/or a damping of the drill tubular; and calculating a plurality of modes using the model. The method also includes increasing an effective damping of the drill tubular for the plurality of modes by modifying at least one of the mass distribution, the stiffness, and the damping of the drill tubular using a predefined damping criterion, wherein the predefined damping criterion includes a ratio, the ratio having a deflection at the drill bit of at least one mode in the plurality and an eigenfrequency of the at least one mode in the plurality, wherein the deflection at the drill bit is raised to a power other than one.

公开(公告)号：US20180252089A1

公开(公告)日：2018-09-06

申请号：US15970585

申请日：2018-05-03

申请人： Andreas Hohl ,  Mathias Tergeist ,  Hatem Oueslati ,  Christian Herbig ,  Jayesh J. Jain ,  Hanno Reckmann ,  Lance A. Endres

发明人： Andreas Hohl ,  Mathias Tergeist ,  Hatem Oueslati ,  Christian Herbig ,  Jayesh J. Jain ,  Hanno Reckmann ,  Lance A. Endres

IPC分类号： E21B44/02

CPC分类号： E21B44/02 ,  G06F17/5086

摘要： A method for reducing vibrations in a drill tubular coupled to a drill bit configured to drill a borehole in a formation includes: constructing a model of a system having the drill tubular, the model having a mass distribution, a stiffness, and/or a damping of the drill tubular; and calculating a plurality of modes using the model. The method also includes increasing an effective damping of the drill tubular for the plurality of modes by modifying at least one of the mass distribution, the stiffness, and the damping of the drill tubular using a predefined damping criterion, wherein the predefined damping criterion includes a ratio, the ratio having a deflection at the drill bit of at least one mode in the plurality and an eigenfrequency of the at least one mode in the plurality, wherein the deflection at the drill bit is raised to a power other than one.

公开(公告)号：US20150122547A1

公开(公告)日：2015-05-07

申请号：US14070130

申请日：2013-11-01

申请人： Andreas Hohl ,  Mathias Tergeist ,  Hatem Oueslati ,  Christian Herbig ,  Jayesh J. Jain ,  Hanno Reckmann ,  Lance A. Endres

发明人： Andreas Hohl ,  Mathias Tergeist ,  Hatem Oueslati ,  Christian Herbig ,  Jayesh J. Jain ,  Hanno Reckmann ,  Lance A. Endres

IPC分类号： E21B7/00 ,  E21B49/00

CPC分类号： E21B44/02 ,  G06F17/5086

摘要： A method for reducing drill tubular vibrations includes: constructing a mathematical model the drill tubular having mass distribution, material stiffness and material damping; constructing an equation of motion of the drill tubular in one of a time domain and frequency domain; transforming the equation of motion into a modal domain equation of motion to provide a mode shape of the drill tubular at an eigenfrequency, the mode shape providing an amplitude at a position along the drill tubular; comparing the amplitude at the position along the drill tubular to a threshold amplitude value; modifying at least one of the mass distribution, material stiffness and material damping if the amplitude exceeds the threshold value; and iterating the above step until at least one of the amplitude of the latest mode shape at the position is less than or equal to the threshold amplitude value and a predetermined constraint limits the modifying.

摘要翻译： 减少钻杆振动的方法包括：构造具有质量分布，材料刚度和材料阻尼的钻杆的数学模型; 构造钻杆在时域和频域之一中的运动方程; 将运动方程转化为模态域运动方程，以提供在本征频率下的钻杆的模式形状，模式形状在沿着钻杆的位置处提供振幅; 将沿着钻杆的位置处的振幅与阈值振幅值进行比较; 如果幅度超过阈值，则修改质量分布，材料刚度和材料阻尼中的至少一个; 并且重复上述步骤，直到位置处的最新模式形状的振幅中的至少一个小于或等于阈值振幅值，并且预定约束限制了修改。

公开(公告)号：US20130035902A1

公开(公告)日：2013-02-07

申请号：US13204402

申请日：2011-08-05

申请人： Lance A. Endres ,  Tyler R. Reynolds ,  Gregory C. Prevost

发明人： Lance A. Endres ,  Tyler R. Reynolds ,  Gregory C. Prevost

IPC分类号： G06F17/50 ,  G06F17/10

CPC分类号： G06F17/5086 ,  E21B10/00 ,  E21B10/08 ,  E21B10/16 ,  E21B44/00

摘要： Methods of designing an earth-boring tool are described, including calculating one or more performance parameters based on drilling conditions, a plurality of wear state values, and a set of values of other design variables. Methods of enhancing a performance parameter in the design of an earth-boring tool are also described, including calculating the performance parameter based at least partially on a plurality of wear state values and a first set of values of other design variables, calculating the performance parameter based at least partially on the plurality of wear state values and a second set of values of design variables different than the first set, and comparing the calculated performance parameters to determine which of the first and the second set is closer to a target range or value across a range of the plurality of wear state values. Related methods of forming an earth-boring tool are also described.

摘要翻译： 描述了设计钻孔工具的方法，包括基于钻井条件计算一个或多个性能参数，多个磨损状态值以及一组其它设计变量的值。 还描述了提高钻孔工具设计中的性能参数的方法，包括至少部分地基于多个磨损状态值和其他设计变量的第一组值计算性能参数，计算性能参数 至少部分地基于所述多个磨损状态值和不同于所述第一组的设计变量的第二组值，并且比较所计算的性能参数以确定所述第一组和第二组中的哪一个更靠近目标范围或值 跨越多个磨损状态值的范围。 还描述了形成钻孔工具的相关方法。

公开(公告)号：US08650006B2

公开(公告)日：2014-02-11

申请号：US13204422

申请日：2011-08-05

申请人： Gregory C. Prevost ,  Lance A. Endres ,  Tyler R. Reynolds

发明人： Gregory C. Prevost ,  Lance A. Endres ,  Tyler R. Reynolds

IPC分类号： G06F17/50

CPC分类号： E21B41/0092 ,  E21B10/00 ,  G06F17/5086

摘要： Methods of designing an earth-boring tool are described, including calculating one or more performance parameters of the tool based on drilling conditions, a plurality of depth of cut values, and a set of values of other design variables. Methods of enhancing a performance parameter in the design of an earth-boring tool are also described, including calculating the performance parameter based at least partially on a plurality of depth of cut values and a first set of values of other design variables, calculating the performance parameter based at least partially on a second set of values of the other design variables different than the first set, and comparing the calculated performance parameters to determine which of the first and the second set is closer to a target range or value across a range of the plurality of depths of cut. Related methods of forming an earth-boring tool are also described.

摘要翻译： 描述了设计镗孔刀具的方法，包括基于钻井条件，多个切削深度值以及一组其他设计变量的值计算刀具的一个或多个性能参数。 还描述了增强挖掘工具设计中的性能参数的方法，包括至少部分地基于多个切割深度值和其他设计变量的第一组值来计算性能参数，计算性能 参数至少部分地基于不同于第一组的其他设计变量的第二组值，并且比较所计算的性能参数以确定第一组和第二组中的哪一个更接近于跨越的范围的目标范围或值 多个切割深度。 还描述了形成钻孔工具的相关方法。

公开(公告)号：US20130008724A1

公开(公告)日：2013-01-10

申请号：US13517774

申请日：2012-06-14

申请人： Lance A. Endres ,  Gregory Carlton Prevost ,  Tyler Rhes Reynolds

发明人： Lance A. Endres ,  Gregory Carlton Prevost ,  Tyler Rhes Reynolds

IPC分类号： E21B10/62 ,  B21K5/04

CPC分类号： E21B10/43

摘要： A method of making a drill bit for drilling subterranean formations includes forming a first blade having a shape and configuration defined by one or more first parameters and forming a second blade having a shape and configuration defined by one or more second parameters. One of the first parameters is different than one of the second parameters.

摘要翻译： 制造用于钻探地下地层的钻头的方法包括形成具有由一个或多个第一参数限定的形状和构造的第一叶片，并形成具有由一个或多个第二参数限定的形状和构造的第二叶片。 第一个参数之一不同于第二个参数之一。

公开(公告)号：US08818775B2

公开(公告)日：2014-08-26

申请号：US13204402

申请日：2011-08-05

申请人： Lance A. Endres ,  Tyler R. Reynolds ,  Gregory C. Prevost

发明人： Lance A. Endres ,  Tyler R. Reynolds ,  Gregory C. Prevost

IPC分类号： G06G7/48 ,  G06F17/50 ,  E21B10/00 ,  E21B10/08 ,  E21B10/16 ,  E21B44/00

CPC分类号： G06F17/5086 ,  E21B10/00 ,  E21B10/08 ,  E21B10/16 ,  E21B44/00

摘要： Methods of designing an earth-boring tool are described, including calculating one or more performance parameters based on drilling conditions, a plurality of wear state values, and a set of values of other design variables. Methods of enhancing a performance parameter in the design of an earth-boring tool are also described, including calculating the performance parameter based at least partially on a plurality of wear state values and a first set of values of other design variables, calculating the performance parameter based at least partially on the plurality of wear state values and a second set of values of design variables different than the first set, and comparing the calculated performance parameters to determine which of the first and the second set is closer to a target range or value across a range of the plurality of wear state values. Related methods of forming an earth-boring tool are also described.

摘要翻译： 描述了设计钻孔工具的方法，包括基于钻井条件计算一个或多个性能参数，多个磨损状态值以及一组其它设计变量的值。 还描述了提高钻孔工具设计中的性能参数的方法，包括至少部分地基于多个磨损状态值和其他设计变量的第一组值计算性能参数，计算性能参数 至少部分地基于所述多个磨损状态值和不同于所述第一组的设计变量的第二组值，并且比较所计算的性能参数以确定所述第一组和第二组中的哪一个更靠近目标范围或值 跨越多个磨损状态值的范围。 还描述了形成钻孔工具的相关方法。

公开(公告)号：US20130035903A1

公开(公告)日：2013-02-07

申请号：US13204422

申请日：2011-08-05

申请人： Gregory C. Prevost ,  Lance A. Endres ,  Tyler R. Reynolds

发明人： Gregory C. Prevost ,  Lance A. Endres ,  Tyler R. Reynolds

IPC分类号： G06F17/50 ,  G06F17/10

CPC分类号： E21B41/0092 ,  E21B10/00 ,  G06F17/5086

摘要： Methods of designing an earth-boring tool are described, including calculating one or more performance parameters of the tool based on drilling conditions, a plurality of depth of cut values, and a set of values of other design variables. Methods of enhancing a performance parameter in the design of an earth-boring tool are also described, including calculating the performance parameter based at least partially on a plurality of depth of cut values and a first set of values of other design variables, calculating the performance parameter based at least partially on a second set of values of the other design variables different than the first set, and comparing the calculated performance parameters to determine which of the first and the second set is closer to a target range or value across a range of the plurality of depths of cut. Related methods of forming an earth-boring tool are also described.

摘要翻译： 描述了设计镗孔刀具的方法，包括基于钻井条件，多个切削深度值以及一组其他设计变量的值计算刀具的一个或多个性能参数。 还描述了增强挖掘工具设计中的性能参数的方法，包括至少部分地基于多个切割深度值和其他设计变量的第一组值来计算性能参数，计算性能 参数至少部分地基于不同于第一组的其他设计变量的第二组值，并且比较所计算的性能参数以确定第一组和第二组中的哪一个更接近于跨越的范围的目标范围或值 多个切割深度。 还描述了形成钻孔工具的相关方法。