Hydraulically powered ball valve lift apparatus and method for downhole pump travelling valves

摘要

The Invention provided is a hydraulic powered down hole reciprocating pump traveling valve component to provided lifting hydraulics on the down stroke using the derived motion and pressure of petroleum liquids and gasses, such as oil, water and natural gas and also utilizing the frictional traveling forces driven by the surface equipment. Designed to utilize the elements within the pumping apparatus to obtain the hydraulic power within and transfer the energy's force to the exposed bottom end of the pressure locked traveling ball valve adjacent within the ball valve containment cage, providing ultimate lifting power to open the ball valve on the initiation of the down stroke. The component consist of a Hollow Hydraulic Power Shaft, Hollow Pressure Motion House, and a Fluid Cavity Power Drag Plunger.

主权项

1. A ball valve lift apparatus for use with a reciprocating downhole pump having a travelling valve assembly on a piston that is slidingly disposed in a pump barrel and features a ball valve that seals against a ball seat when in a closed position, the ball valve lift apparatus comprising:
a hollow housing having a north end arranged for coupling to the piston of the downhole pump to reside in a position south of the ball seat of the valve assembly, the hollow housing having a hollow interior that is open to an exterior of the hollow housing at both the north end of the housing and an opposing south end thereof; a shaft partially disposed within the hollow interior of the hollow housing in a manner slidable back and forth therein, the shaft having a hollow interior flow passage passing fully through the shaft in an axial direction from a south end of the shaft to an opposing north end of the shaft; and a drag plunger attached to a south end of the shaft disposed outside of the hollow housing beyond the south end of said housing for frictional contact of said drag plunger with an internal surface of the pump barrel, the hollow interior flow passage of the shaft being in fluid communication with a space external of the drag plunger beyond a south end of the drag plunger; the shaft being slidable relative to the housing between a first position in which the drag plunger is spaced southward of the south end of the housing and the north end of the piston is disposed within the housing, and a second position in which the drag plunger is nearer to the south end of the housing than in the first position and the shaft projects externally northward of the housing from the north end thereof by a sufficient distance to displace the ball valve from the ball seat, thereby enabling fluid flow northward through the ball seat via the hollow interior flow passage of the shaft.