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公开(公告)号：US20140182938A1
公开(公告)日：2014-07-03
申请号：US14105867
申请日：2013-12-13
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。
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公开(公告)号：US09416593B2
公开(公告)日：2016-08-16
申请号：US14105867
申请日：2013-12-13
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。
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公开(公告)号：US20140182947A1
公开(公告)日：2014-07-03
申请号：US14138208
申请日：2013-12-23
IPC分类号： E21B10/36
CPC分类号： B22F3/03 , B22F3/1208 , C23C24/085 , E21B10/36 , E21B10/46
摘要： A cutting insert for a percussion hammer bit. The cutting insert includes a base portion for coupling to a bit face of the percussion hammer bit. An extension portion is coupled to the base portion and axially offset therefrom along a longitudinal axis extending through the base portion and the extension portion. The extension portion includes at least three lobes that are circumferentially offset from one another around the longitudinal axis. The lobes extend axially away from the base portion, and the lobes extend radially outward from the longitudinal axis.
摘要翻译： 用于冲击锤钻头的切削刀片。 切削刀片包括用于联接到冲击锤钻头的钻头面的基部。 延伸部分连接到基部并且沿着延伸穿过基部和延伸部分的纵向轴线从其轴向偏移。 所述延伸部分包括围绕所述纵向轴线彼此周向偏移的至少三个叶片。 凸角从基部轴向轴向延伸，并且凸角从纵向轴线径向向外延伸。
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公开(公告)号：US20140182939A1
公开(公告)日：2014-07-03
申请号：US14138180
申请日：2013-12-23
CPC分类号： E21B10/36
摘要： A percussion drill bit for drilling a borehole. The drill bit includes a bit body having a bit face disposed on an axial end portion thereof. First and second cutting elements are disposed on the bit face. A cutting plane is defined in tangential contact with crest portion of the first and second cutting elements. A third cutting element on the bit face is at least partially positioned between the first and second cutting elements. The third cutting element is at least partially conical, and a crest portion of the third cutting element is offset from the cutting plane.
摘要翻译： 用于钻孔的冲击钻头。 所述钻头包括具有设置在其轴向端部上的钻头面的钻头本体。 第一和第二切割元件设置在钻头面上。 切割平面被定义为与第一和第二切割元件的波峰部分切向接触。 位面上的第三切割元件至少部分地位于第一和第二切割元件之间。 第三切割元件至少部分是圆锥形的，并且第三切割元件的波峰部分从切割平面偏移。
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公开(公告)号：US20140182937A1
公开(公告)日：2014-07-03
申请号：US14101889
申请日：2013-12-10
IPC分类号： E21B10/08
CPC分类号： E21B10/5673 , E21B10/52
摘要： A roller cone drill bit having a bit body. The bit body has a journal bearing coupled to an end portion thereof. A roller cone is coupled to the journal bearing. A first cutting element is coupled to the roller cone. A ratio of a radius of curvature of a crest portion of the first cutting element to a diameter of the first cutting element is between about 0.3:1 and about 0.8:1. A second cutting element is coupled to the roller cone. A ratio of a radius of curvature of a crest portion of the second cutting element to a diameter of the second cutting element is between about 0.05:1 and about 0.3:1. A height of the second cutting element is greater than the height of the first cutting element h between about 0.1 mm and about 6 mm.
摘要翻译： 具有钻头体的辊锥钻头。 钻头体具有联接到其端部的轴颈轴承。 滚子锥体联接到轴颈轴承。 第一切割元件联接到辊锥。 第一切割元件的波峰部分的曲率半径与第一切割元件的直径的比率在约0.3:1和约0.8:1之间。 第二切割元件联接到滚子锥体。 第二切割元件的波峰部分的曲率半径与第二切割元件的直径的比率在约0.05:1至约0.3:1之间。 第二切割元件的高度大于第一切割元件h的高度在约0.1mm至约6mm之间。
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