公开(公告)号：US10350733B2

公开(公告)日：2019-07-16

申请号：US14957847

申请日：2015-12-03

申请人： Smith International, Inc.

发明人： Liang Zhao ,  Xiaoge Gan ,  Yahua Bao ,  Yuri Y. Burhan ,  Youhe Zhang ,  J. Daniel Belnap ,  Zhijun Lin

IPC分类号： B24D18/00 ,  E21B10/56 ,  B24D3/06

摘要： Methods for joining an ultra-hard body, such as a thermally stable polycrystalline diamond (TSP) body, to a substrate and mitigating the formation of high stress concentration regions between the ultra-hard body and the substrate. One method includes covering at least a portion of the ultra-hard body with an intermediate layer, placing the ultra-hard body and the intermediate layer in a mold, filling a remaining portion of mold with a substrate material including a matrix material and a binder material such that the intermediate layer is disposed between the ultra-hard body and the substrate material, and heating the mold to an infiltration temperature configured to melt the binder material and form the substrate.

公开(公告)号：US20180274303A1

公开(公告)日：2018-09-27

申请号：US15990997

申请日：2018-05-29

申请人： Smith International, Inc.

发明人： Huimin Song ,  Xiaoge Gan ,  Zhijun Lin ,  Ke Chen

IPC分类号： E21B10/567 ,  E21B10/573 ,  E21B10/55

摘要： A cutting element may include a substrate; and an ultrahard layer on the substrate, the substrate and the ultrahard layer defining a non-planar working surface of the cutting element such that the ultrahard layer forms a cutting portion and the substrate is at least laterally adjacent to the ultrahard layer. Another cutting element includes a pointed region having a side surface extending from the pointed region outer perimeter to a peak. An ultrahard material body forms a portion of the pointed region including the peak, and a base region extends a depth from the pointed region outer perimeter. The ultrahard material body has a height to width aspect ratio with the height and width measured between two points of the body having the greatest distance apart along a dimension parallel with a longitudinal axis (i.e., height) along a dimension perpendicular to the longitudinal axis (i.e., width).

公开(公告)号：US20180058148A1

公开(公告)日：2018-03-01

申请号：US15685351

申请日：2017-08-24

申请人： Smith International, Inc.

发明人： Youhe Zhang ,  Xiaoge Gan ,  Huimin Song ,  Rogelio Benitez

IPC分类号： E21B10/55 ,  E21B10/42 ,  E21B10/62

CPC分类号： E21B10/55 ,  B22F3/1055 ,  B22F5/10 ,  B22F7/08 ,  B22F2005/001 ,  C22C26/00 ,  C22C29/08 ,  E21B10/42 ,  E21B10/62 ,  Y02P10/295

摘要： A tool includes a base with a crown extending from the base. The crown is additively manufactured on the base, forming a bond between the crown and the base. At least one protrusion may extend from the base surface into a recess in the crown, such that the crown encompasses the protrusion. The protrusion may mechanically interlock the base and the crown to improve torque transfer between the crown and base. The bond at the contact between the base and crown may include impregnating at least a portion of the crown with the material of the base, or at least a portion of base with the material of the crown, which may improve a connection between the crown and base.

公开(公告)号：US09416593B2

公开(公告)日：2016-08-16

申请号：US14105867

申请日：2013-12-13

申请人： Smith International, Inc.

发明人： Xiaoge Gan ,  Lokesh Bhatia ,  Kevin E. Harrington ,  Robert H. Slaughter, Jr.

IPC分类号： E21B4/14

CPC分类号： E21B4/14 ,  Y10T29/49826

摘要： A percussion drilling assembly includes a housing with a hammer bit disposed in the lower end portion thereof and configured to move longitudinally within the housing. The hammer bit includes an annular bit shank having a bit strike face and a cutting structure at a lower end portion thereof. An annular piston having a piston strike face arranged and designed to strike the bit strike face is also disposed in the housing. At least one of the bit strike face and the piston strike face has a toroidal curvature profile. A method includes one or more of lowering the percussion drilling assembly into a borehole, engaging the cutting structure with a formation, and impacting the bit strike face of the annular bit shank with the piston strike face of the annular piston.

摘要翻译： 敲击钻探组件包括具有设置在其下端部分中的锤头的壳体，并且构造成在壳体内纵向移动。 锤头包括在其下端部分具有钻头打击面和切割结构的环形钻头柄。 具有布置和设计成撞击钻头打击面的活塞冲击面的环形活塞也设置在壳体中。 钻头表面和活塞冲击面中的至少一个具有环形曲率轮廓。 一种方法包括将冲击钻井组件降低到钻孔中的一种或多种，​​将切割结构与地层接合，并且与环形活塞的活塞冲击面冲击环形钻头柄的钻头面。