SURFACE DRIVEN WELL PUMP

Oil is recovered from a borehole using a pump using a surface driven hi gh rotary speed pump. In one aspect, the pump is a centrifugal pump, operated a t speeds in excess of 3400 rpm. The pump is located in a downhole positions within a production zone of a wellbore. A drive rod extends from a wellh...

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Bibliographische Detailangaben
1. Verfasser:	HOWARD, WILLIAM F
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	Oil is recovered from a borehole using a pump using a surface driven hi gh rotary speed pump. In one aspect, the pump is a centrifugal pump, operated a t speeds in excess of 3400 rpm. The pump is located in a downhole positions within a production zone of a wellbore. A drive rod extends from a wellhead, downward ly through the wellbore, where it is received in engagement with the impeller o f the pump. A dampening element is disposed in conjunction with the rod to reduce the physical excursion of the rod and thus enable high-speed rotation of the rod with minimal risk of excursion related failure of the rod or wellbore.