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：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：US20070227781A1

公开(公告)日：2007-10-04

申请号：US11695460

申请日：2007-04-02

申请人： Karlos Cepeda ,  Robert Buske ,  James Overstreet ,  Rolf Pessier

发明人： Karlos Cepeda ,  Robert Buske ,  James Overstreet ,  Rolf Pessier

IPC分类号： E21B10/00

CPC分类号： E21B10/16

摘要： An earth-boring bit has a high density row on one of its cones. Each cone has a nose area and a gage area with a heel row of teeth at the gage area. One of the cones has a farther intermediate row of teeth and another one of the cones has a closer intermediate row of teeth. The remaining cone has a high density row of teeth, which is located closer to the axis of rotation of the bit than the farther intermediate row and farther from the axis of rotation of the bit than the closer intermediate row. The high density row has a smaller pitch between crests of the teeth than the closer and farther intermediate rows. The smaller pitch provides more teeth in the high density row than in the closer intermediate row and the farther intermediate row.

摘要翻译： 一个钻头在其一个锥体上具有高密度排。 每个锥体都有一个鼻子区域和一个表面区域，在表面区域有一排跟随的牙齿。 一个锥体具有更远的中间排的齿，另一个锥体具有更靠近的中间排的齿。 剩余的锥体具有高密度排的齿，其位于比中间较远的位置更靠近钻头的旋转轴线，并且比钻头的旋转轴线更靠近中间行。 高密度排在齿顶部之间的间距要小于越靠近和更远的中间行。 更小的间距在高密度行中提供比在更靠近的中间行和更远的中间行中更多的齿。

公开(公告)号：US20070163812A1

公开(公告)日：2007-07-19

申请号：US11709439

申请日：2007-02-22

申请人： James Overstreet ,  Robert Buske ,  John Bradford ,  Caleb Rickabaugh

发明人： James Overstreet ,  Robert Buske ,  John Bradford ,  Caleb Rickabaugh

IPC分类号： E21B10/08

CPC分类号： E21B10/08

摘要： An earth-boring bit has bit legs having hardfacing covering the majority of the outer surface. The hardfacing may have gaps at an area surrounding the ball plug and an area around a fixture dimple. The hardfacing may be multi-layer, with the layers differing in composition. Recesses may be located at the leading and trailing edges of the supporting metal so as to provide a thicker area of hardfacing at these corners. The supporting metal of the outer surface of the bit leg may also have an upper cylindrical section and a lower tapered section. The hardfacing has a constant outer diameter but will taper in thickness in the lower tapered section. The thickness of the hardfacing may also vary in a circumferential direction with a greater thickness over at least one of the corners.

摘要翻译： 钻孔钻头具有覆盖大部分外表面的耐磨面。 表面硬化在球塞周围的区域和夹具凹坑周围的区域可能具有间隙。 表面硬化可以是多层，组合不同。 凹部可以位于支撑金属的前缘和后缘处，以便在这些拐角处提供更厚的表面硬化面积。 钻头腿的外表面的支撑金属也可以具有上圆柱形部分和下锥形部分。 表面硬化具有恒定的外径，但在下锥形部分中的厚度将逐渐变细。 表面硬化的厚度也可以在圆周方向上变化，并且在至少一个拐角上具有更大的厚度。

公开(公告)号：US20080029310A1

公开(公告)日：2008-02-07

申请号：US11823800

申请日：2007-06-27

申请人： John Stevens ,  James Overstreet ,  Kenneth Gilmore ,  Jeremy Morgan

发明人： John Stevens ,  James Overstreet ,  Kenneth Gilmore ,  Jeremy Morgan

IPC分类号： E21B10/46 ,  B24D3/10

CPC分类号： E21B10/54 ,  B22F2998/10 ,  C22C29/00 ,  C22C29/08 ,  B22F1/0003 ,  B22F3/15 ,  B22F3/10

摘要： A rotary drill bit includes a bit body substantially formed of a particle-matrix composite material having an exterior surface and an abrasive wear-resistant material disposed on at least a portion of the exterior surface of the bit body. Methods for applying an abrasive wear-resistant material to a surface of a drill bit are also provided.

摘要翻译： 旋转钻头包括基本上由具有外表面的颗粒 - 基质复合材料形成的钻头体和设置在钻头体的外表面的至少一部分上的磨料耐磨材料。 还提供了将磨料耐磨材料施加到钻头表面的方法。

公开(公告)号：US08028769B2

公开(公告)日：2011-10-04

申请号：US12341263

申请日：2008-12-22

申请人： Rudolf Carl Pessier ,  Robert J. Buske ,  James Overstreet

发明人： Rudolf Carl Pessier ,  Robert J. Buske ,  James Overstreet

IPC分类号： E21B10/30 ,  E21B10/08 ,  E21B10/28 ,  E21B10/26

CPC分类号： E21B10/28 ,  E21B17/1092

摘要： A reamer bit for use in earth boring operations comprising a body, cutter mounts having rolling cutters on the bit body, and stabilizers pads on the body placed between adjacent cutter mounts. The reamer may further include a pilot bit on a drill pipe extending downward from the reamer body. The reamer bit outer periphery with its stabilizers and bit body has a radial profile approximating a circle thereby reducing dynamic perturbations during drilling operations.

摘要翻译： 一种用于地面钻孔操作的铰刀钻头，其包括主体，在钻头体上具有滚动切割器的切割器支架以及放置在相邻切割器支架之间的主体上的稳定器垫。 扩孔器还可以包括在从扩孔器主体向下延伸的钻杆上的导向钻头。 具有其稳定器和钻头体的铰刀钻头外周具有近似圆形的径向轮廓，从而减少了钻井操作期间的动态扰动。

公开(公告)号：US20070107942A1

公开(公告)日：2007-05-17

申请号：US11560148

申请日：2006-11-15

申请人： James Overstreet ,  David Curry ,  Jimmy Eason ,  John Stevens ,  Eric Sullivan

发明人： James Overstreet ,  David Curry ,  Jimmy Eason ,  John Stevens ,  Eric Sullivan

IPC分类号： E21B10/00

CPC分类号： E21B10/46 ,  C23C30/005

摘要： An earth-boring bit, and a method of increasing the durability of the same, which includes the step providing a pliable sheet of a hardfacing matrix material. The pliable sheet of hardfacing material has a nickel and chromium matrix combined with a first element. The first element is selected from a group consisting of spherical sintered tungsten carbide, spherical cast tungsten carbide, and metallic glass. The hardfacing matrix material sheet is placed on a preselected surface of the drill bit. The hardfacing matrix material sheet is then fusion bonded to the drill bit.

摘要翻译： 一种钻孔钻头，以及增加其耐久性的方法，其包括提供耐磨表面材料的柔韧片材的步骤。 柔性表面材料片具有与第一元素组合的镍和铬基质。 第一元素选自球形烧结碳化钨，球形铸造碳化钨和金属玻璃。 将表面硬化的基体材料片放置在钻头的预选表面上。 然后将表面硬化的基体材料片材熔合在钻头上。

公开(公告)号：US20070102202A1

公开(公告)日：2007-05-10

申请号：US11593437

申请日：2006-11-06

申请人： Heeman Choe ,  John Stevens ,  James Overstreet ,  James Westhoff ,  Jimmy Eason

发明人： Heeman Choe ,  John Stevens ,  James Overstreet ,  James Westhoff ,  Jimmy Eason

IPC分类号： E21B10/54

CPC分类号： E21B10/00 ,  B22F7/062 ,  B22F7/08 ,  B22F2005/002 ,  B22F2998/10 ,  C22C1/051 ,  C22C14/00 ,  C22C29/005 ,  C22C32/0047 ,  E21B10/567 ,  B22F3/04 ,  B22F3/162

摘要： Earth-boring rotary drill bits include bit bodies comprising a composite material including a plurality of hard phase regions or particles dispersed throughout a titanium or titanium-based alloy matrix material. The bits further include a cutting structure disposed on a face of the bit body. In some embodiments, the bit bodies may include a plurality of regions having differing material compositions. For example, the bit bodies may include a first region comprising a plurality of hard phase regions or particles dispersed throughout a titanium or titanium-based alloy matrix material, and a second region comprising a titanium or a titanium-based alloy material. Methods for forming such drill bits include at least partially sintering a plurality of hard particles and a plurality of particles comprising titanium or a titanium-based alloy material to form a bit body comprising a particle-matrix composite material. A shank may be attached directly to the bit body.

摘要翻译： 钻孔旋转钻头包括钻头体，其包括复合材料，所述复合材料包括分散在整个钛或钛基合金基体材料中的多个硬质相区域或颗粒。 钻头还包括设置在钻头体的表面上的切割结构。 在一些实施例中，钻头体可以包括具有不同材料组成的多个区域。 例如，钻头体可以包括包括分散在整个钛或钛基合金基体材料中的多个硬质相区域或颗粒的第一区域，以及包含钛或钛基合金材料的第二区域。 形成这种钻头的方法包括至少部分地烧结多个硬颗粒和多个包含钛或钛基合金材料的颗粒，以形成包含颗粒 - 基体复合材料的钻头体。 柄可以直接附接到钻头体上。

公开(公告)号：US20070102200A1

公开(公告)日：2007-05-10

申请号：US11540912

申请日：2006-09-29

申请人： Heeman Choe ,  John Stevens ,  James Westhoff ,  Jimmy Eason ,  James Overstreet

发明人： Heeman Choe ,  John Stevens ,  James Westhoff ,  Jimmy Eason ,  James Overstreet

IPC分类号： E21B10/00

CPC分类号： E21B10/00 ,  E21B10/567

摘要： Rotary drill bits for drilling subterranean formations include a bit body and at least one cutting structure disposed on a face thereof. The bit body includes a crown region comprising a particle-matrix composite material that includes a plurality of boron carbide particles dispersed throughout an aluminum or aluminum-based alloy matrix material. In some embodiments, the matrix material may include a continuous solid solution phase and a discontinuous precipitate phase. Methods of manufacturing rotary drill bits for drilling subterranean formations include infiltrating a plurality of boron carbide particles with a molten aluminum or aluminum-based material. In additional methods, a green powder component is provided that includes a plurality of particles each comprising boron carbide and a plurality of particles each comprising aluminum or an aluminum-based alloy material. The green powder component is at least partially sintered to provide a bit body, and a shank is attached to the bit body.

摘要翻译： 用于钻探地层的旋转钻头包括钻头体和设置在其表面上的至少一个切割结构。 钻头体包括冠部区域，其包括颗粒 - 基质复合材料，其包括分散在整个铝或铝基合金基体材料中的多个碳化硼颗粒。 在一些实施方案中，基质材料可以包括连续的固溶相和不连续的沉淀相。 用于钻探地下地层的旋转钻头的制造方法包括用熔融的铝或铝基材料渗透多个碳化硼颗粒。 在另外的方法中，提供了一种绿色粉末组分，其包括多个颗粒，每个颗粒包含碳化硼和多个颗粒，每个颗粒包括铝或铝基合金材料。 绿色粉末成分至少部分地被烧结以提供钻头体，并且柄部附接到钻头体上。

公开(公告)号：US20070079992A1

公开(公告)日：2007-04-12

申请号：US11545914

申请日：2006-10-11

申请人： David Curry ,  James Overstreet ,  Jimmy Eason

发明人： David Curry ,  James Overstreet ,  Jimmy Eason

IPC分类号： E21B10/00

CPC分类号： C22C29/08 ,  B22F2005/001 ,  B22F2998/00 ,  E21B10/46 ,  B22F1/0014 ,  B22F1/0048

摘要： An earth-boring drill bit having a bit body with a cutting component formed from a tungsten carbide composite material is disclosed. The composite material includes a binder and tungsten carbide crystals comprising sintered pellets. The composite material may be used as a hardfacing on the body and/or cutting elements, or be used to form portions or all of the body and cutting elements. The pellets may be formed with a single mode or multi-modal size distribution of the crystals.

摘要翻译： 公开了一种具有由碳化钨复合材料形成的切割部件的钻头体的钻孔钻头。 复合材料包括粘合剂和包含烧结颗粒的碳化钨晶体。 复合材料可以用作身体和/或切割元件上的硬化面，或者用于形成身体和切割元件的部分或全部。 颗粒可以用晶体的单模或多模尺寸分布形成。