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公开(公告)号：US08535024B2
公开(公告)日：2013-09-17
申请号：US13029639
申请日：2011-02-17
CPC分类号： F04B47/022 , E21B43/127
摘要： A downhole pump has a barrel and plunger. The barrel has a first one-way valve and the plunger has a second done-way valve. The plunger reciprocates with respect to the barrel. The plunger has a first end which has a tapered leading edge. Ports are adjacent to the leading edge. The ports communicate with a passage in the plunger. A sucker rod string coupling is located at the plunger first end. The sucker rod string coupling is coupled to walls located between the ports. The end of the sucker rod string coupling that is coupled to the plunger is tapered so that fluid can flow out of the ports. The sucker rod string coupling and the plunger first end form an integral member that couples to the remainder of the plunger.
摘要翻译： 井下泵有一个桶和柱塞。 枪管具有第一单向阀，并且柱塞具有第二完成阀。 柱塞相对于筒体往复运动。 柱塞具有具有锥形前缘的第一端。 端口与前沿相邻。 端口与柱塞中的通道连通。 吸柱杆联接器位于柱塞第一端。 吸盘杆联接器联接到位于端口之间的壁。 联接到柱塞的抽油杆杆联接器的端部是锥形的，使得流体可以流出端口。 抽油杆杆联接器和柱塞第一端构成联接到柱塞的其余部分的整体构件。
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公开(公告)号：US08403331B2
公开(公告)日：2013-03-26
申请号：US11137285
申请日：2005-05-25
IPC分类号： F16J15/16
摘要： A stuffing box for a polished rod used with a downhole pump uses injectable packing to provide a seal around the polished rod. The stuffing box has a chamber for receiving the packing. The chamber has an opening to allow the addition of packing to the chamber. The packing is maintained in a compacted condition by either injecting additional packing through the opening or adjusting the volume of the chamber.
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公开(公告)号：US08528912B2
公开(公告)日：2013-09-10
申请号：US13780938
申请日：2013-02-28
IPC分类号： F16J15/16
摘要： A stuffing box for a polished rod used with a downhole pump uses injectable packing to provide a seal around the polished rod. The stuffing box has a chamber for receiving the packing. The chamber has an opening to allow the addition of packing to the chamber. The packing is maintained in a compacted condition by either injecting additional packing through the opening or adjusting the volume of the chamber.
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4.发明申请公开(公告)号：US20130175056A1
公开(公告)日：2013-07-11
申请号：US13780938
申请日：2013-02-28
IPC分类号： E21B33/03
摘要： A stuffing box for a polished rod used with a downhole pump uses injectable packing to provide a seal around the polished rod. The stuffing box has a chamber for receiving the packing. The chamber has an opening to allow the addition of packing to the chamber. The packing is maintained in a compacted condition by either injecting additional packing through the opening or adjusting the volume of the chamber.
摘要翻译： 与井下泵一起使用的抛光棒的填料函使用可注射填料来提供抛光棒周围的密封。 填料函有一个收纳包装的室。 该腔室具有允许向腔室添加包装的开口。 通过通过开口注入附加填料或调节室的体积，将填料保持在压实状态。
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公开(公告)号：US20120141310A1
公开(公告)日：2012-06-07
申请号：US13029639
申请日：2011-02-17
IPC分类号： F04B53/12
CPC分类号： F04B47/022 , E21B43/127
摘要： A downhole pump has a barrel and plunger. The barrel has a first one-way valve and the plunger has a second done-way valve. The plunger reciprocates with respect to the barrel. The plunger has a first end which has a tapered leading edge. Ports are adjacent to the leading edge. The ports communicate with a passage in the plunger. A sucker rod string coupling is located at the plunger first end. The sucker rod string coupling is coupled to walls located between the ports. The end of the sucker rod string coupling that is coupled to the plunger is tapered so that fluid can flow out of the ports. The sucker rod string coupling and the plunger first end form an integral member that couples to the remainder of the plunger.
摘要翻译： 井下泵有一个桶和柱塞。 枪管具有第一单向阀，并且柱塞具有第二完成阀。 柱塞相对于筒体往复运动。 柱塞具有具有锥形前缘的第一端。 端口与前沿相邻。 端口与柱塞中的通道连通。 吸柱杆联接器位于柱塞第一端。 吸盘杆联接器联接到位于端口之间的壁。 联接到柱塞的抽油杆杆联接器的端部是锥形的，使得流体可以流出端口。 抽油杆杆联接器和柱塞第一端构成联接到柱塞的其余部分的整体构件。
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