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公开(公告)号：US5447026A
公开(公告)日：1995-09-05
申请号：US163185
申请日：1993-12-06
Applicant: Lloyd Stanley
Inventor： Lloyd Stanley
CPC classification number: F04B53/006 , F04B47/04 , F04B53/164 , F04B9/105 , F04B2201/0206
Abstract: A hydraulic oil well pump drive system for driving an oil well sucker rod includes a master piston positioned within a master cylinder for axial displacement between first and second ends of the master cylinder. The master piston has a piston drive rod which extends through one end of the master cylinder. The drive rod is connected to a crank pin of an eccentric crank. A center seal assembly divides the master cylinder into a working chamber and a pressure chamber in opposite ends of the master cylinder. Each respective chamber defines a fluid volume which varies with the displacement of the master piston. The master piston displacement creates a bi-directional flow of working fluid from the working chamber. A wellhead hydraulic assembly is operably connected to the oil well sucker rod and is in fluid communication with the master cylinder working chamber to receive the working fluid flow. The wellhead hydraulic assembly is responsive to the working fluid flow to reciprocate an oil well sucker rod at a rate which relates to the rate of master piston displacement. A gas accumulator is in fluid communication with the master cylinder pressure chamber to bias the master piston toward the master cylinder working end, providing an upward biasing force at the wellhead hydraulic assembly.
Abstract translation: 用于驱动油井抽油杆的液压油井泵驱动系统包括位于主缸内的主活塞，用于主缸的第一和第二端之间的轴向位移。 主活塞具有延伸穿过主缸的一端的活塞驱动杆。 驱动杆连接到偏心曲柄的曲柄销上。 中心密封组件将主缸分为工作室和主缸相对端的压力室。 每个相应的腔室限定随着主活塞的位移而变化的流体体积。 主活塞位移产生了来自工作室的工作流体的双向流动。 井口液压组件可操作地连接到油井抽油杆，并且与主缸工作室流体连通以接收工作流体流。 井口液压组件响应于工作流体流动，以与主活塞位移速率相关的速率往复运动油井抽油杆。 气体蓄能器与主缸压力室流体连通，以将主活塞偏压到主缸工作端，在井口液压组件处提供向上的偏压力。
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公开(公告)号：US5832727A
公开(公告)日：1998-11-10
申请号：US447193
申请日：1995-05-22
Applicant: Lloyd Stanley
Inventor： Lloyd Stanley
CPC classification number: F04B53/006 , F04B47/04 , F04B53/164 , F04B9/105 , F04B2201/0206
Abstract: A hydraulic oil well pump drive system for driving an oil well sucker rod includes a master piston positioned within a master cylinder for axial displacement between first and second ends of the master cylinder. The master piston has a piston drive rod which extends through one end of the master cylinder. The drive rod is connected to a crank pin of an eccentric crank. A center seal assembly divides the master cylinder into a working chamber and a pressure chamber in opposite ends of the master cylinder. Each respective chamber defines a fluid volume which varies with the displacement of the master piston. The master piston displacement creates a bi-directional flow of working fluid from the working chamber. A wellhead hydraulic assembly is operably connected to the oil well sucker rod and is in fluid communication with the master cylinder working chamber to receive the working fluid flow. The wellhead hydraulic assembly is responsive to the working fluid flow to reciprocate an oil well sucker rod at a rate which relates to the rate of master piston displacement. A gas accumulator is in fluid communication with the master cylinder pressure chamber to bias the master piston toward the master cylinder working end, providing an upward biasing force at the wellhead hydraulic assembly.
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公开(公告)号：US5997181A
公开(公告)日：1999-12-07
申请号：US118697
申请日：1998-07-16
Applicant: Lloyd Stanley
Inventor： Lloyd Stanley
CPC classification number: F04B53/006 , F04B47/04 , F04B53/164 , F04B9/105 , F04B2201/0206
Abstract: A hydraulic oil well pump drive system for driving an oil well sucker rod includes a wellhead hydraulic assembly that is operably connected to the oil well sucker rod to reciprocate the sucker rod. The wellhead hydraulic assembly includes a hydraulic cylinder and a rod that reciprocates linearly within the hydraulic cylinder. The rod has an upper end with a circumferential groove that receives a split cylindrical bearing. The split cylindrical bearing is has two semicircular halves retained within the groove by the inner walls of the cylinder. The halves are retained vertically, relative to the rod, by the groove itself.
Abstract translation: 用于驱动油井抽油杆的液压油井泵驱动系统包括井口液压组件，其可操作地连接到油井抽油杆以使抽油杆往复运动。 井口液压组件包括液压缸和在液压缸内线性往复运动的杆。 杆具有带有圆周槽的上端，该圆周槽容纳分开的圆柱形轴承。 分体圆柱形轴承具有通过气缸内壁保持在凹槽内的两个半圆形半轴。 两半通过槽本身垂直地保持在杆上。
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公开(公告)号：US5800063A
公开(公告)日：1998-09-01
申请号：US812723
申请日：1997-03-06
Applicant: Lloyd Stanley
Inventor： Lloyd Stanley
CPC classification number: F04B53/006 , F04B47/04 , F04B53/164 , F04B9/105 , F04B2201/0206
Abstract: A hydraulic oil well pump drive system for driving an oil well sucker rod includes a wellhead hydraulic assembly that is operably connected to the oil well sucker rod to reciprocate the sucker rod. The wellhead hydraulic assembly includes a hydraulic cylinder and a rod that reciprocates linearly within the hydraulic cylinder. The rod has an upper end with a circumferential groove that receives a split cylindrical bearing. The split cylindrical bearing is has two semicircular halves retained within the groove by the inner walls of the cylinder. The halves are retained vertically, relative to the rod, by the groove itself.
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