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    • 2. 发明授权
    • Axially extended downhole seismic source
    • 轴向延伸井下震源
    • US06478107B1
    • 2002-11-12
    • US09565301
    • 2000-05-04
    • James R. BirchakRobert L. MalloyCarl A. RobbinsEugene J. LinyaevDavid J. Young
    • James R. BirchakRobert L. MalloyCarl A. RobbinsEugene J. LinyaevDavid J. Young
    • G01V102
    • G01V1/133
    • An axially extended downhole seismic source is disclosed. In one embodiment, the seismic source includes multiple pressure storage chambers, each having an inlet valve and an outlet valve. The inlet valve is coupled between the pressure storage chamber and the interior of the drill string, and the outlet valve is similarly coupled between the pressure storage chamber and the annular space around the drill string. A compressible fluid may be provided in the pressure storage chambers, and pistons may be positioned to contact the compressible fluid. For each pressure storage chamber, an inlet piston contacts the compressible fluid and fluid inside the drill string, while an outlet piston contacts the compressible fluid and fluid in the annular space around the drill string. When the outlet valve is closed, the inlet valve can be opened to allow pressure inside the drill string to compress the compressible fluid inside the pressure storage chamber. Subsequently closing the inlet valve and opening the outlet valve causes fluid to be ejected into the annular space, thereby generating seismic waves. The use of multiple pressure storage chambers allows the pressure front from the seismic source to be extended axially to advantageously increase the fraction of seismic energy transmitted into the formation while preventing damage to the formation.
    • 公开了一种轴向延伸的井下地震源。 在一个实施例中,地震源包括多个压力存储室,每个压力存储室具有入口阀和出口阀。 入口阀联接在压力存储室和钻柱的内部之间,并且出口阀类似地连接在压力存储室与钻柱周围的环形空间之间。 可压缩流体可以设置在压力存储室中,并且活塞可以被定位成接触可压缩流体。 对于每个压力储存室,入口活塞接触可压缩流体和钻柱内部的流体,同时出口活塞接触可压缩流体和围绕钻柱的环形空间中的流体。 当出口阀关闭时,可以打开入口阀,以允许钻柱内部的压力压缩压力储存室内部的可压缩流体。 随后关闭入口阀并打开出口阀,导致流体被喷射到环形空间中,从而产生地震波。 使用多个压力储存室允许来自震源的压力前端轴向延伸,以有利地增加传输到地层中的地震能量的分数,同时防止对地层的损坏。
    • 7. 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。