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    • 2. 发明授权
    • Friction reducing tool
    • 减摩工具
    • US06585043B1
    • 2003-07-01
    • US09554180
    • 2000-09-27
    • Geoffrey Neil Murray
    • Geoffrey Neil Murray
    • E21B1710
    • E21B17/1057
    • A centralizer having a first group of rollers (5) for reducing friction between the centralizer and an oil field tubular (7) and a second group of rollers (4) for reducing friction between the centralizer and the wall of a well. The axles of the first group of rollers (5) are generally aligned with the axis of the bore (2) to reduce rotational friction. The axles of the rollers of the second group of rollers (4) are generally transversed to the bore (2). The arrangement reduces rotational and axial drag between an oil field tubular (7) and the walls of a well, particularly when initiating rotation of an oil field tubular.
    • 一种扶正器,其具有用于减轻所述扶正器和油田管(7)之间的摩擦的第一组辊(5)和用于减轻所述扶正器与井的壁之间的摩擦的第二组辊(4)。 第一组辊(5)的轴线通常与孔(2)的轴线对齐以减小旋转摩擦。 第二组辊(4)的辊的轴通常横向于孔(2)。 该装置减小了油田管(7)和井的壁之间的旋转和轴向阻力,特别是当油田管的旋转时。
    • 3. 发明授权
    • Drill pipe having a journal formed thereon
    • 具有形成在其上的轴颈的钻管
    • US06557654B1
    • 2003-05-06
    • US09581807
    • 2000-10-02
    • Geoffrey Neil Murray
    • Geoffrey Neil Murray
    • E21B1710
    • E21B17/10E21B17/1064E21B19/15E21B29/10
    • A drill pipe (1; 12) has a journal (2; 15) formed thereon. Integrally formed stop collars (10, 11; 16, 17) are provided at each end of the journal (2; 15). The arrangement enables rotatable tools (18) to be fitted directly to a journal (2; 15) to reduce friction between the rotatable tool (18) and the journal (2; 15). The journal (2; 15) may be of a substantially greater length than the length of the rotatable tool (18) to facilitate lubrication and cooling. Alternatively removable stop collars (30; 31) are secured adjacent the ends of a journal (28) formed on the drill pipe (25). Methods of forming the journal surface (2; 15) during manufacture of a drill pipe are disclosed. There are also disclosed methods for reconditioning an existing drill pipe (20) to form a journal (21) thereon.
    • 钻管(1; 12)具有在其上形成的轴颈(2; 15)。 整体形成的止动环(10,11; 16,17)设置在轴颈(2; 15)的每个端部。 该布置使得可旋转工具(18)能够直接安装到轴颈(2; 15)上,以减少可旋转工具(18)和轴颈(2; 15)之间的摩擦。 轴颈(2; 15)可以具有比可旋转工具(18)的长度大得多的长度,以便于润滑和冷却。 或者,可移除的止动环(30; 31)紧固在形成在钻杆(25)上的轴颈(28)的端部附近。 公开了在制造钻杆期间形成轴颈表面(2; 15)的方法。 还公开了用于修复现有钻杆(20)以在其上形成轴颈(21)的方法。
    • 4. 发明授权
    • Friction reducing tool for oilfield drilling applications
    • 油田钻井应用减摩工具
    • US06382333B1
    • 2002-05-07
    • US09380940
    • 1999-11-01
    • Geoffrey Neil Murray
    • Geoffrey Neil Murray
    • E21B1710
    • E21B17/1057
    • A friction reducing tool for drilling applications having a plurality of rollers for about the periphery of the tool (3). The rollers (4) have extensions (7) which locate within cavities (8) to prevent the rollers from passing from cavity (10) to the exterior of the tool. The tool is formed in multiple parts (3a and 3b) having interengaging tongues (5 and 6) which are joined together by passing a rod (15) through bore (13). A groove (14) is provided in outer component (2) to enable rod (15) to be inserted in bore (13).
    • 一种用于钻孔应用的摩擦减少工具,其具有围绕所述工具(3)的周边的多个辊。 辊(4)具有位于空腔(8)内的延伸部(7),以防止辊从空腔(10)流到工具的外部。 该工具形成为具有相互接合的舌状物(5和6)的多个部分(3a和3b),通过使杆(15)穿过孔(13)而连接在一起。 在外部部件(2)中设置有凹槽(14),以使得杆(15)可插入孔(13)中。
    • 7. 发明授权
    • Drill string fitting
    • 钻弦乐器
    • US06209667B1
    • 2001-04-03
    • US08952343
    • 1998-02-12
    • Geoffrey Neil MurrayDenis Robert Fernandes
    • Geoffrey Neil MurrayDenis Robert Fernandes
    • E21B1710
    • E21B17/1078E21B17/105E21B17/1057
    • A fitting for reducing friction between a drilling string and the wall of a well. In a first aspect the fitting has recesses (6) provided along the bore of the fitting to lubricate the interface between the fitting and the drill string to minimise friction. In a second aspect a fitting is provided on a drill string having rotatable roller means (21) which can rotate about a point of rotation (23) so as to minimise both axial and rotational friction. According to a third aspect the fitting comprises an inner section (30) secured to a drill pipe (35) or other fitting and an outer section (31) rotatable about the inner section (30). Preferably a sealed bearing (36, 42-47, 37, 38) is provided between the inner section (30) and outer section (31).
    • 用于减少钻柱和井壁之间的摩擦的配件。 在第一方面,配件具有沿着配件的孔设置的凹部(6),以润滑配件和钻柱之间的界面以最小化摩擦。 在第二方面,在具有可旋转的滚轮装置(21)的钻柱上设置一个配件,该装置可围绕旋转点(23)旋转,以便使轴向和旋转摩擦力最小化。 根据第三方面,配件包括固定到钻管(35)或其它配件的内部部分(30)和可围绕内部部分(30)旋转的外部部分(31)。 优选地,密封的轴承(36,42-47,37,38)设置在内部部分(30)和外部部分(31)之间。