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1. 发明授权

US09856864B2 Reciprocating subsurface pump 有权
公开(公告)号：US09856864B2
公开(公告)日：2018-01-02
申请号：US14369965
申请日：2013-01-04
申请人： NATIONAL OILWELL VARCO, L.P.
发明人： Derek N. Krilow
IPC分类号： F04B47/00 , F04B7/02 , E21B43/12 , F04B47/02 , F04B53/12 , F04B53/14
CPC分类号： F04B7/0208 , E21B43/12 , E21B43/121 , E21B43/127 , F04B47/02 , F04B53/126 , F04B53/14
摘要： A reciprocating pump includes an open-bottomed barrel adapted for attaching to the lower end of a production tubing string; a seating assembly having a cylindrical bore and adapted for mounting to a seating nipple at the upper end of the barrel; and a plunger assembly adapted for attaching to the lower end of a sucker rod string. The plunger assembly includes concentric upper and lower plunger sections interconnected by a double-valve, ported valve cage. The plungers are sized for sealing reciprocating engagement within, respectively, the bore of the seating assembly and the bore of the pump barrel. The lower plunger and the ported valve cage define a production chamber within the pump barrel. The upper plunger has ports allowing fluid flow from the tubing into the production chamber. Optionally, the upper plunger and the barrel may be provided with flush ports facilitating flushing of the pump to eliminate vapor lock.

2. 发明申请

US20150017036A1 RECIPROCATING SUBSURFACE PUMP 有权
标题翻译：复合表面泵
公开(公告)号：US20150017036A1
公开(公告)日：2015-01-15
申请号：US14369965
申请日：2013-01-04
申请人： NATIONAL OILWELL VARCO, L.P.
发明人： Derek N. Krilow
IPC分类号： F04B7/02 , E21B43/12
CPC分类号： F04B7/0208 , E21B43/12 , E21B43/121 , E21B43/127 , F04B47/02 , F04B53/126 , F04B53/14
摘要： A reciprocating pump includes an open-bottomed barrel adapted for attaching to the lower end of a production tubing string; a seating assembly having a cylindrical bore and adapted for mounting to a seating nipple at the upper end of the barrel; and a plunger assembly adapted for attaching to the lower end of a sucker rod string. The plunger assembly includes concentric upper and lower plunger sections interconnected by a double-valve, ported valve cage. The plungers are sized for sealing reciprocating engagement within, respectively, the bore of the seating assembly and the bore of the pump barrel. The lower plunger and the ported valve cage define a production chamber within the pump barrel. The upper plunger has ports allowing fluid flow from the tubing into the production chamber. Optionally, the upper plunger and the barrel may be provided with flush ports facilitating flushing of the pump to eliminate vapor lock.
摘要翻译：往复泵包括适于连接到生产油管柱的下端的开口底筒; 座椅组件，其具有圆柱形孔并且适于安装到所述镜筒的上端处的定位接头; 以及适于附接到抽油杆柱的下端的柱塞组件。柱塞组件包括通过双阀，带阀的阀笼互相连接的同心的上和下柱塞部分。柱塞的尺寸分别用于密封座椅组件的孔和泵筒的孔内的往复啮合。下部柱塞和带孔阀门在泵筒内限定了一个生产室。上部柱塞具有允许流体从管道流入生产室的端口。可选地，上部柱塞和筒体可以设置有冲洗口，便于冲洗泵以消除蒸气锁定。

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