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    • 6. 发明授权
    • Low frequency acoustic attenuator for use in downhole applications
    • 低频声衰减器用于井下应用
    • US07210555B2
    • 2007-05-01
    • US10882915
    • 2004-06-30
    • Vimal V. ShahEugene J. LinyaevDonald G. KyleWallace R. Gardner
    • Vimal V. ShahEugene J. LinyaevDonald G. KyleWallace R. Gardner
    • F16F15/02F16F7/00G01V1/04G01V1/16
    • E21B47/16G01V1/523
    • An acoustic attenuator includes a housing having an inner side surface which defines an interior chamber and at least one dampening member both physically and acoustically coupled to the housing and projecting into the interior chamber. Acoustic energy propagating within the housing is deflected into the dampening members for acoustically dispersal within the interior chamber. In various aspects thereof, the dampening members may include one or a group of two or more generally cylindrical sleeves having one end both physically and acoustically coupled to the housing and a second end projecting into the interior chamber. Preferably, when a group of two or more cylindrical sleeves are employed, the sleeves are nested within one another. The dampening members may further include a second, oppositely disposed, group of two or more acoustic attenuators nested within one another and interdigitated with the first group of cylindrical sleeves.
    • 声衰减器包括壳体,该壳体具有限定内腔的内侧表面和至少一个阻尼构件,物理和声学耦合到壳体并突出到内腔中。 在壳体内传播的声能被偏转到阻尼构件中,用于在内腔内声扩散。 在其各个方面,阻尼构件可以包括一个或一组两个或更多个大致圆柱形的套筒,其中一个端部物理上和声学上耦合到壳体,第二端突出到内部腔室中。 优选地,当使用一组两个或更多个圆柱形套筒时,套筒彼此嵌套。 阻尼构件还可以包括彼此嵌套的两个或更多个声衰减器的第二相对设置的组,并与第一组圆柱形套筒相互指向。
    • 10. 发明授权
    • System and apparatus for orienting a well casing perforating gun
    • 用于定向井套管穿孔枪的系统和装置
    • US4410051A
    • 1983-10-18
    • US238907
    • 1981-02-27
    • Wilbur L. DanielEugene J. LinyaevArnold M. WalkowGregory J. Wilkinson
    • Wilbur L. DanielEugene J. LinyaevArnold M. WalkowGregory J. Wilkinson
    • E21B43/1185E21B43/119E21B43/117
    • E21B43/1185E21B43/119
    • A system for orienting a well casing perforating gun for utilization in wells having multiple tubing strings wherein it is desired to perforate the well casing in a zone other than the deepest production zone of the well and includes a hoist and associated apparatus for moving the perforating apparatus through the well and actuating the perforating gun. The perforating apparatus includes an elongated housing supportable on a cable, rollers on the exterior of the housing to support it on the interior of the well casing and/or tubing, the casing perforating gun, an orienting apparatus operable to orient the perforating gun relative to a string of tubing within the casing, a swivel within the housing to permit rotating motion of the lower portion of the housing relative to an upper portion of the housing, and an eccentric weight below the swivel to assist in positioning and aligning the casing perforating gun to the desired position.
    • 一种用于定向井套管穿孔枪的系统,用于具有多个管柱的井中,其中期望在井的最深生产区域之外的区域中穿孔井套,并且包括用于移动穿孔装置的提升机和相关联的装置 通过井并致动穿孔枪。 穿孔装置包括可在电缆上支撑的细长壳体,壳体外部的辊,以将其支撑在井套管和/或管道的内部,套管穿孔枪,定向装置,可操作以使射孔枪相对于 壳体内的一排管,在壳体内的旋转件,以允许壳体的下部相对于壳体的上部的旋转运动,以及在旋转件下方的偏心重块,以帮助定位和对准套管穿孔枪 到期望的位置。