公开(公告)号：US20060283638A1

公开(公告)日：2006-12-21

申请号：US11511119

申请日：2006-08-28

申请人： Christopher Beuershausen ,  Raul Lema ,  Ronald Hales ,  Don Nguyen ,  Gregory Ricks ,  Chih Lin ,  Terry Koltermann ,  Mark Morris ,  Chris McCarty ,  Ronald Jones ,  James Overstreet ,  Rudolf Pessier

发明人： Christopher Beuershausen ,  Raul Lema ,  Ronald Hales ,  Don Nguyen ,  Gregory Ricks ,  Chih Lin ,  Terry Koltermann ,  Mark Morris ,  Chris McCarty ,  Ronald Jones ,  James Overstreet ,  Rudolf Pessier

IPC分类号： E21B10/08

CPC分类号： E21B10/08

摘要： An earth-boring bit has a bit body that includes head sections, each having depending bit legs with a circumferentially extending outer surface, a leading side, and a trailing side. A bearing shaft depends inwardly from each of the bit legs for mounting a cutter. The bit includes a beveled surface formed at a junction of the leading side and the outer surface of each bit leg. The beveled surface is angled relative to a radial plane emenating from the axis of the bit. The angle of the beveled surface is at least 20 degrees, and extends to an inner surface of the bit leg. The bit can also have a layer of hardfacing on the leading, trailing and shirttail surfaces of the bit leg. A diversion finger of hardfacing extends circumferentially to direct cuttings.

公开(公告)号：US20060060387A1

公开(公告)日：2006-03-23

申请号：US10948829

申请日：2004-09-23

申请人： James Overstreet ,  Robert Buske ,  Rudolf Pessier ,  Jeremy Morgan

发明人： James Overstreet ,  Robert Buske ,  Rudolf Pessier ,  Jeremy Morgan

IPC分类号： E21B10/18

CPC分类号： E21B17/1092

摘要： An earth boring bit has at least one rotatable cone with a gage surface that engages a sidewall of a wellbore as the bit rotates. The gage surface has hardfacing bars spaced circumferentially apart from each other. A first group of the hardfacing bars extends from the inner edge of the gage surface to gage sides of the heel row cutting elements. A second group of the hardfacing bars extends from the inner edge of the gage surface to spaces between the heel row cutting elements, forming trimmer cutting elements. The hardfacing bars are made up of carbide particles in a metallic matrix.

摘要翻译： 地镗头具有至少一个带有表面的可旋转圆锥体，该钻头表面在钻头旋转时与钻井的侧壁接合。 表面具有彼此周向隔开间隔开的硬化条。 第一组表面硬化条从表面的内边缘延伸到后跟行切割元件的规定边。 第二组表面硬化条从表面的内边缘延伸到后跟行切割元件之间的空间，形成修剪切割元件。 耐磨面条由金属基体中的碳化物颗粒构成。

公开(公告)号：US20070034415A1

公开(公告)日：2007-02-15

申请号：US11204063

申请日：2005-08-15

申请人： Floyd Felderhoff ,  Brian Baker ,  Rudolf Pessier ,  Jimmy Eason

发明人： Floyd Felderhoff ,  Brian Baker ,  Rudolf Pessier ,  Jimmy Eason

IPC分类号： E21B10/36

CPC分类号： E21B17/1092 ,  E21B10/16 ,  E21B10/50

摘要： An earth boring bit has an outer row of inserts located within extra deep holes. Each of the holes has a cylindrical sidewall with a depth greater than the length of the barrel of the insert mounted within. The difference in depth is at least equal to a distorted entry zone in the hole. A portion of the sidewall that includes the entry zone surrounds the cutting end, reducing the projection of the cutting end from the land.

摘要翻译： 地镗头具有位于额外深孔内的外排插入件。 每个孔具有圆柱形侧壁，其深度大于安装在其中的插入件的筒体的长度。 深度差异至少等于孔中扭曲的进入区域。 包括入口区域的侧壁的一部分围绕切割端，减少切割端从地面的突出。

公开(公告)号：US20060219442A1

公开(公告)日：2006-10-05

申请号：US11393298

申请日：2006-03-30

申请人： Floyd Felderhoff ,  Rudolf Pessier

发明人： Floyd Felderhoff ,  Rudolf Pessier

IPC分类号： E21B10/08

CPC分类号： E21B10/16

摘要： An earth-boring bit has a bit body and at least one cone for rotation relative to the bit body. The cone has a gage surface and a nose area separated by a central area. A nose insert is located in the nose area. The nose insert has a barrel located within a hole in the nose area and an outer end protruding from the cone, the outer end has a perimeter that is a plane perpendicular to a barrel axis of the nose insert.

摘要翻译： 钻头具有一个位体和至少一个相对于钻头体旋转的锥体。 锥体具有表面和由中心区域分开的鼻部区域。 鼻插头位于鼻部区域。 鼻插入物具有位​​于鼻部区域中的孔内的筒体和从锥体突出的外端，外端具有与鼻插入物的筒轴垂直的平面的周边。