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51. 发明申请

US20080128174A1 EXPANDABLE REAMERS FOR EARTH-BORING APPLICATIONS AND METHODS OF USING THE SAME 有权
标题翻译：用于接地应用的可膨胀的反应器及其使用方法
公开(公告)号：US20080128174A1
公开(公告)日：2008-06-05
申请号：US11949627
申请日：2007-12-03
申请人： Steven R. Radford , Scott S. Shu , Les T. Shale , Mark E. Morris , Mark R. Kizziar , Anton F. Zahradnik
发明人： Steven R. Radford , Scott S. Shu , Les T. Shale , Mark E. Morris , Mark R. Kizziar , Anton F. Zahradnik
IPC分类号： E21B7/28
CPC分类号： E21B10/322
摘要： Expandable reamer tools include an outer body, a fluid passageway extending through the outer body, and at least one blade configured to slide relative to the outer body between a retracted position and an expanded position in a direction oriented at an acute angle of less than ninety degrees (90°) to a longitudinal axis of the outer body. In some embodiments, the tools may include a moveable inner sleeve member configured to selectively allow hydraulic fluid pressure within the fluid passageway to act directly on the at least one blade. Methods for enlarging a borehole using such expandable reamer tools and methods for removing such expandable reamer tools from a borehole are also disclosed.
摘要翻译：可扩展铰刀工具包括外主体，延伸穿过外主体的流体通道，以及至少一个叶片，其构造成在缩回位置和展开位置之间相对于外主体在朝向锐角小于九十度的方向上滑动（90°）相对于外体的纵向轴线。在一些实施例中，工具可以包括可移动内套筒构件，其构造成选择性地允许流体通道内的液压流体压力直接作用在至少一个叶片上。还公开了使用这种可扩展铰刀工具扩大钻孔的方法和从钻孔中移除这种可扩展铰刀工具的方法。

52. 发明授权

US06651756B1 Steel body drill bits with tailored hardfacing structural elements 有权
标题翻译：钢体钻头采用定制硬化结构件
公开(公告)号：US06651756B1
公开(公告)日：2003-11-25
申请号：US09715406
申请日：2000-11-17
申请人： Robert J. Costo, Jr. , James L. Overstreet , Anton F. Zahradnik , James L. Duggan , Russel S. Smith , Mark E. Morris
发明人： Robert J. Costo, Jr. , James L. Overstreet , Anton F. Zahradnik , James L. Duggan , Russel S. Smith , Mark E. Morris
IPC分类号： E21B1046
CPC分类号： E21B10/55
摘要： Hardfacing is deposited on a PDC-equipped steel body rotary drag bit and forms substantially protruding structural elements, such as wear knots or chip breakers. Hardfacing may also be applied to features such as gage pads, wherein at least two different hardfacing compositions are utilized and specifically located in order to exploit the material characteristics of each type of hardfacing composition employed. The use of multiple hardfacing compositions may further be employed as a wear-resistant coating on various elements of the drill bit. The surfaces to which hardfacing is applied may include machined slots, cavities or grooves providing increased surface area for application of the hardfacing. Additionally, such surface features may serve to effect a desired residual stress state in the resultant hardfacing layer or other structure.
摘要翻译：表面硬化层沉积在配备PDC的钢体旋转阻力钻头上并形成基本上突出的结构元件，例如磨损结或断屑槽。表面硬化也可以应用于诸如量具垫的特征，其中使用至少两种不同的表面硬化组合物并且特别地定位以便利用所使用的每种类型的表面硬化组合物的材料特性。多个表面硬化组合物的使用可进一步用作钻头的各种元件上的耐磨涂层。施加硬化面的表面可以包括加工的槽，空腔或凹槽，其提供用于施加表面硬化的增加的表面积。此外，这些表面特征可用于在所得的表面硬化层或其它结构中实现所需的残余应力状态。

53. 发明授权

US4727942A Compensator for earth boring bits 失效
标题翻译：补偿器用于地球钻头
公开(公告)号：US4727942A
公开(公告)日：1988-03-01
申请号：US927789
申请日：1986-11-05
申请人： Edward M. Galle , Anton F. Zahradnik
发明人： Edward M. Galle , Anton F. Zahradnik
IPC分类号： E21B10/22 , E21B10/24 , F16N7/30 , E21B7/00
CPC分类号： F16N7/30 , E21B10/24
摘要： In an earth boring bit of the type having a rotatable cone secured to a bearing shaft, an improved pressure compensating and relief system. A flexible diaphragm has an enlarge peripheral portion in an o-ring configuration sealingly secured in a compensator cavity to form a mud region and a lubricant region. A central portion of the diaphragm has a perforated and ridged protrusion extending into the mud region to form a self energizing area, exposed to the mud region, that seals the perforation when the pressure of the lubricant is less than or substantially equal that of the mud. A wall at the end of the compensator cavity surrounds the mud passage and engages an area around the protrusion when the diaphragm is fully extended by lubricant pressure build-up that exceeds the hydrostatic pressure. Thus, the resulting pressure differential opens the perforation, releases lubricant and relieves the build-up of lubricant pressure. However, the configuration of the protrusion is such as to prevent the entrance of mud into the lubricant reservoir since the exterior area of the protrusion exceeds that of the interior area. The differential pressure to open the perforation is selected to be not less than about fifty psi and the preferred form of the protrusion is substantially cylindrical, its perforation and lubricant entrance being beveled. An absence of metal bonded to the diaphragm helps avoid failures due to stress induce separations and debonding due to chemical attack. Clearances are used between the diaphragm and the end of the cavity and the end of the protector cup to provide self centering with the lubricant and drilling mud passages.
摘要翻译：在具有固定到轴承轴的可旋转锥体的类型的钻孔中，改进的压力补偿和释放系统。柔性隔膜具有密封地固定在补偿腔中的O形环构型中的扩大周边部分，以形成泥浆区域和润滑剂区域。隔膜的中心部分具有延伸到泥浆区域中的穿孔和隆起的突起，以形成暴露于泥浆区域的自我激励区域，当润滑剂的压力小于或基本上等于泥浆的压力时，其密封穿孔。当补偿器腔的端部处的一个壁围绕着泥浆通道，当通过超过流体静力压力的润滑剂压力积聚完全延伸膜片时，该突起与周围的区域接合。因此，所产生的压力差打开穿孔，释放润滑剂并减轻润滑剂压力的积聚。然而，由于突起的外部区域超过内部区域的外部区域，所以突起的构造是防止泥浆进入润滑剂储存器中的。打开穿孔的压差选择为不小于约50psi，并且突出物的优选形式基本上为圆柱形，其穿孔和润滑剂入口被倒角。没有粘合到隔膜上的金属有助于避免由于应力引起的由于化学侵蚀引起的分离和脱粘的故障。在隔膜与腔的端部和保护杯的端部之间使用间隙，以提供与润滑剂和钻井泥浆通道的自对中。

54. 发明授权

US4474249A Kelly seal 失效
标题翻译：凯利印章
公开(公告)号：US4474249A
公开(公告)日：1984-10-02
申请号：US426437
申请日：1982-09-29
申请人： Anton F. Zahradnik , John W. Stevens
发明人： Anton F. Zahradnik , John W. Stevens
IPC分类号： E21B3/04 , E21B33/08 , E21B3/00
CPC分类号： E21B3/04 , E21B33/085
摘要： An earth boring machine is shown with an improved kelly seal. The machine includes a hydraulic cylinder and a kelly rotatably carried within the cylinder and axially movable with respect to the longitudinal axis of the cylinder. A rotary quill surrounds the kelly for supplying rotational force to the kelly. A packing assembly carried about the kelly within the hydraulic cylinder proximate and end thereof seals hydraulic fluid within the hydraulic cylinder. An improved retaining assembly connects the packing assembly to the rotary quill but allows limited relative rotational movement of the packing assembly with respect to the rotary quill about the longitudinal axis of the kelly. The limited movement provided by the retainer assembly isolates the packing assembly from drive torque which is transferred from the rotary quill to the kelly, thereby reducing the tendency of the packing assembly to drive the kelly.
摘要翻译：显示了一种具有改进的凯利密封的钻孔机。该机器包括液压缸和可旋转地承载在气缸内并且可相对于气缸的纵向轴线可轴向运动的凯利。旋转套管围绕着凯利向凯利提供旋转力。液压缸内靠近和结束处的凯利的包装组件密封液压缸内的液压流体。改进的保持组件将包装组件连接到旋转套筒，但允许包装组件相对于旋转套筒围绕凯利的纵向轴线进行有限的相对旋转运动。由保持器组件提供的有限运动将包装组件与从旋转套筒传送到凯利的驱动扭矩隔离，从而减少包装组件驱动凯利的趋势。

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