公开(公告)号：US20160145945A1

公开(公告)日：2016-05-26

申请号：US14944265

申请日：2015-11-18

申请人： SMITH INTERNATIONAL, INC.

发明人： Gary R. Portwood ,  Cary A. Roth ,  Luca Tedeschi

IPC分类号： E21B10/08

CPC分类号： E21B10/08 ,  E21B10/50

摘要： A low collision damage bit may include one or more roller cones including a first material and a second material. The bit may have a bit axis and a bit body, and the second material of the one or more roller cones may be positioned farther from the bit axis than the bit body. The second material may have a hardness or yield strength less than the first material.

摘要翻译： 低碰撞损坏钻头可以包括一个或多个包括第一材料和第二材料的滚子锥体。 该钻头可以具有位轴和钻头本体，并且一个或多个滚子锥体的第二材料可以被定位成比钻头体更靠近钻头轴线。 第二材料可以具有比第一材料小的硬度或屈服强度。

公开(公告)号：US20210140245A1

公开(公告)日：2021-05-13

申请号：US17250079

申请日：2019-05-20

申请人： Smith International, Inc.

发明人： Gary R. Portwood ,  Luca Tedeschi ,  Alessandro Bertini ,  Simone Pallesi ,  Johann Obermair ,  James Layne Larsen ,  Alessio Cechi

IPC分类号： E21B10/18

摘要： A cutting bit includes a bit body and high-pressure body with a high-pressure fluid conduit therethrough. The high-pressure body and bit body are joined together. The high-pressure fluid conduit is configured to convey a fluid at greater than 14.5 ksi, and in some embodiments greater than 40 ksi. The high-pressure fluid conduit may direct the fluid through a nozzle in a fluid jet to weaken material, such as an earth formation. The cutting bit includes at least one roller cone and/or blades with cutting elements thereon to remove the weakened material. A cutting bit includes both high and low-pressure fluid conduits, and high and low-pressure fluid nozzles. The high-pressure nozzles receive fluid flow from a downhole pressure intensifier, and a connection between the bit and the downhole pressure intensifier includes rigid connectors, flexible connectors, or a combination thereof.

公开(公告)号：US09856701B2

公开(公告)日：2018-01-02

申请号：US14727966

申请日：2015-06-02

申请人： Smith International, Inc.

发明人： Gary Ray Portwood ,  Luca Tedeschi ,  Giampaolo Ferrari ,  Joshua Gatell ,  John Clunan ,  Allen Dean Chester White

IPC分类号： E21B10/16

CPC分类号： E21B10/16

摘要： A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view.

公开(公告)号：US20150101868A1

公开(公告)日：2015-04-16

申请号：US14514268

申请日：2014-10-14

申请人： SMITH INTERNATIONAL, INC.

发明人： Luca Tedeschi ,  Gary Portwood ,  Zhehua Zhang

IPC分类号： E21B10/08 ,  B23P15/28 ,  E21B10/18

CPC分类号： E21B10/083

摘要： A method including of manufacturing a drill bit includes inputting bit characteristics into a simulator. The bit characteristics may include a drill bit mass, coordinates of the bit center of gravity, and an inertia tensor of the bit. The bit center of gravity and a vector of the inertia tensor may be aligned with a bit axis in the simulator. Based on the alignment of the center of gravity and the inertia tensor with the bit axis, new bit characteristics may be determined. A drill bit with the new bit characteristics may be produced.

摘要翻译： 包括制造钻头的方法包括将钻头特性输入到模拟器中。 钻头特性可以包括钻头质量，钻头重心的坐标和钻头的惯性张量。 比特重心和惯性张量的向量可以与模拟器中的位轴对齐。 基于重心和惯性张量与位轴的对准，可以确定新的位特性。 可能产生具有新位特性的钻头。

公开(公告)号：US11512536B2

公开(公告)日：2022-11-29

申请号：US17250079

申请日：2019-05-20

申请人： Smith International, Inc.

发明人： Gary R. Portwood ,  Luca Tedeschi ,  Alessandro Bertini ,  Simone Pallesi ,  Johann Obermair ,  James Layne Larsen ,  Alessio Cechi

IPC分类号： E21B10/18 ,  E21B10/60 ,  E21B17/18

摘要： A cutting bit includes a bit body and high-pressure body with a high-pressure fluid conduit therethrough. The high-pressure body and bit body are joined together. The high-pressure fluid conduit is configured to convey a fluid at greater than 14.5 ksi, and in some embodiments greater than 40 ksi. The high-pressure fluid conduit may direct the fluid through a nozzle in a fluid jet to weaken material, such as an earth formation. The cutting bit includes at least one roller cone and/or blades with cutting elements thereon to remove the weakened material. A cutting bit includes both high and low-pressure fluid conduits, and high and low-pressure fluid nozzles. The high-pressure nozzles receive fluid flow from a downhole pressure intensifier, and a connection between the bit and the downhole pressure intensifier includes rigid connectors, flexible connectors, or a combination thereof.

公开(公告)号：US20150376951A1

公开(公告)日：2015-12-31

申请号：US14727966

申请日：2015-06-02

申请人： Smith International, Inc.

发明人： Gary Ray Portwood ,  Luca Tedeschi ,  Giampaolo Ferrari ,  Joshua Gatell ,  John Clunan ,  Allen Dean Chester White

IPC分类号： E21B10/16

CPC分类号： E21B10/16

摘要： A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view.

摘要翻译： 一种用于在土层中钻孔的滚动钻头。 在一个实施例中，钻头包括多个滚动锥形切割器。 每个锥形切割器包括多个量具切割元件，第一多个井底切割元件和第二多个井底切割元件。 第一多个井底切割元件中的每一个相对于每个锥形切割器上的计量切割元件交错，并且每个锥形切割器上的量规切割元件的轮廓和第一多个井底切割元件在旋转轮廓视图中重叠。 第二多个井底切割元件中的每一个相对于至少一个锥形切割器上的第一多个井底切割元件交错，并且第一多个井底切割元件和第二多个井底切割元件的轮廓在至少一个 锥形切割器在旋转轮廓视图中重叠。