公开(公告)号：US4904228A

公开(公告)日：1990-02-27

申请号：US622548

申请日：1984-06-20

申请人： Lawrence Frear ,  John S. Davis ,  Craig R. Hyland

发明人： Lawrence Frear ,  John S. Davis ,  Craig R. Hyland

IPC分类号： E21B17/05 ,  E21B17/20 ,  F16D3/226 ,  F16L27/02

CPC分类号： F16L27/02 ,  E21B17/05 ,  E21B17/20 ,  F16D3/2265

摘要： An improved universal ball joint especially adapted to be used in the transmission of high torque, as in oil field use, includes a driving and driven shaft. One of the shafts, which may be the driving shaft includes a spherical ball received in a housing provided in the other shaft, which may be the driven shaft. The opposed surfaces of the ball and housing include axially extending grooves of essentially the same depth and length forming therebetween a plurality of chambers. Each chamber receives a pin which is tapered at each end and which forms the driving connection between the shafts. The shafts and the ball may include a bore for flow of fluid through the assembly, the ball being sealed in the ball chamber by seals to provide a sealed ball chamber which may be filled with lubricant, the ball being seated on a bearing and retained in the chamber by a retainer member which prevents relative axial movement between the shafts. Various forms are described including arrangements for flexible drill strings, reamer/stabilizer combination, mill tool combination and an arrangement for use in converting eccentric rotation to concentric rotation for use in a downhole motor.

摘要翻译： 特别适用于传动高扭矩的改进的万向球接头，如在油田中所使用的，包括驱动轴和从动轴。 可以是驱动轴的一个轴包括容纳在设置在另一轴中的壳体中的球形球，其可以是从动轴。 球和壳体的相对表面包括在其间形成有多个腔室的基本上相同的深度和长度的轴向延伸凹槽。 每个腔室接收一个销，每个端部都是锥形的，并形成两个轴之间的驱动连接。 轴和球可以包括用于流过组件的流体的孔，球通过密封件密封在球室中，以提供可填充有润滑剂的密封球室，球坐在轴承上并保持在 该腔室通过保持构件防止轴之间的相对轴向运动。 描述了各种形式，包括用于柔性钻柱，铰刀/稳定器组合，铣刀组合的布置，以及用于将偏心旋转转换成同心旋转以用于井下马达的布置。

公开(公告)号：US4552232A

公开(公告)日：1985-11-12

申请号：US626237

申请日：1984-06-29

申请人： Lawrence Frear

发明人： Lawrence Frear

IPC分类号： E21B10/10 ,  E21B10/16 ,  E21B10/22

CPC分类号： E21B10/10 ,  E21B10/16 ,  E21B10/22

摘要： A rotary drag drill bit is seen wherein cutter bodies are rotatively connected to a main body structure at a fully offset position. The fully offset position is defined by a rotational axis of each cutter body, a longitudinal axis of the drill bit and end support points or positions of the cutter bodies. The rotational axes of the cutter bodies are perpendicular to the longitudinal axis of the drill bit. The end supports of the cutter body are each equal distance from any point on the longitudinal axis of the drill bit. The cutter bodies of essentially ellipsoidal configuration, being slightly thicker at a mid-portion thereof. Cutting elements are connected to flutes projecting above an outer surface of each cutter body. In a primary rotational direction of the drill string and drill bit, the rows abrade the bottom and side walls of a well bore as the cutter body attacks the earth formation as the drill bit is rotated. The impingement of the cutting elements of the cutter body on the earth formation imparts a secondary rotation to the cutter bodies, which secondary rotation is induced by the primary rotation. The secondary rotation allows the rows of cutting elements to engage the side wall of the bore and gauge the hole as well as abrading away material from the bottom of the well bore. A roller bearing assembly is provided for the cutter body to permit the secondary rotation, while a thrust bearing assembly assists the primary abrasive action imparted by the primary rotational movement of the rotary drill bit. A lubrication system is included in the main body structure of the drill bit wherein both the roller bearing assembly and thrust bearing assembly are lubricated.

摘要翻译： 可以看到一种旋转阻力钻头，其中刀具体在完全偏移位置处可旋转地连接到主体结构。 完全偏移位置由每个切割器主体的旋转轴线，钻头的纵向轴线和刀具主体的端部支撑点或位置限定。 刀体的旋转轴线垂直于钻头的纵向轴线。 切割器主体的端部支撑件与钻头的纵向轴线上的任何点均等距离。 具有基本上椭圆形构造的切割体在其中间部分稍厚。 切割元件连接到突出在每个切割器主体的外表面上方的凹槽。 在钻柱和钻头的主旋转方向上，随着钻头旋转，切割器主体攻击地层时，排磨损井眼的底壁和侧壁。 切割体的切割元件在地层上的冲击赋予刀具主体二次旋转，二次旋转由主旋转引起。 次级旋转允许一排切割元件接合孔的侧壁并测量孔，以及从井眼的底部磨去材料。 提供了用于刀体的滚子轴承组件以允许二次旋转，而推力轴承组件有助于由旋转钻头的主旋转运动所施加的主磨料作用。 润滑系统包括在钻头的主体结构中，其中滚子轴承组件和推力轴承组件均被润滑。