Rod pull down tool
Номер патента: CA2114900A1
Опубликовано: 04-08-1995
Автор(ы): John Forbes Brown
Принадлежит: Integrated Production Services Ltd., John Forbes Brown, Otatco Inc., Weber Oil Tools Ltd., Weber, James L.
Опубликовано: 04-08-1995
Автор(ы): John Forbes Brown
Принадлежит: Integrated Production Services Ltd., John Forbes Brown, Otatco Inc., Weber Oil Tools Ltd., Weber, James L.
Реферат: In a well using a lift pump operated by a tension string from the surface, the down stroke of the pump is accelerated by providing a plunger element secured to the pump operating string. The plunger has an upper end exposed to the high hydrostatic pressure in the tubing string above the pump, and a lower end exposed to the substantially lower hydrostatic pressure in the well outside the tubing string. This produces a net downwards force on the pump operating string allowing a higher pump speed and a higher volume delivery.
Inverted pull-down oil well pump
Номер патента: CN106640611A. Автор: 李安松,蔡永全. Владелец: PYANG EAST HAO MACHINERY ELECTRONICS CO Ltd. Дата публикации: 2017-05-10.