Patent ID: 8336632

Claim:
A direct drive pump system, comprising: a well casing, the well casing being a housing for the direct drive pump system; a pump having a pump inlet situated at a lower end of the well casing; a production tubing; a drive string rod, the drive string rod being situated within the production tubing; at least one of a stabilizer and a bearing, the at least one of a stabilizer and a bearing being disposed on the drive string rod and serving as support for the drive string rod to ensure stable rotation during operation of the pump; a drive tube, the drive tube being situated within the production tubing; and at least one centralizer, wherein the at least one centralizer is associated with the drive tube and supports the drive tube so that the drive tube remains fairly centered in the production tubing, and the drive string rod and its stabilizers are situated within the drive tube, wherein the pump situated downhole in the well casing drives the drive string rod to rotate to encourage well fluid pressurized from the pump to flow uphole towards the surface for production.