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1. 发明申请

US20060060387A1 Bit gage hardfacing 有权
标题翻译：位量表面硬化
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。

2. 发明申请

US20070227781A1 High Density Row on Roller Cone Bit 有权
标题翻译：滚子轴上的高密度排
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。

3. 发明申请

US20070163812A1 Bit leg outer surface hardfacing on earth-boring bit 有权
标题翻译：位腿外表面硬化地面钻孔
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。

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