Abstract: An unlimited stroke drive method for pumping fluid from an oil well in which the well has a tubing string extending from the earth's surface down to a fluid producing formation. The method includes the steps of positioning a pump barrel within the tubing, an upper end of the pump barrel having communication through a standing valve with the interior of the tubing string, vertically reciprocating a length of flexible cable within the tubing string to vertically reciprocate a plunger within the pump barrel to allow a lower portion to quickly fill with fluid from the producing formation and then to a downward position in which fluid within the pump barrel lower portion is transferred through a traveling valve to an area within the pump barrel above the plunger to move formation fluid from within the pump barrel to the interior of the tubing and thence to the earth's surface.

Abstract: A system and method for pumping an underground drip includes a pump barrel housing with a plunger and an elongated stroke actuator cylinder sealed to the pump barrel that vertically reciprocates the plunger. The pump barrel and plunger are preferably vented to avoid vacuum lock during pumping. The plunger pumps the fluid located in the drip upwardly to a low pressure tank or a pressurized surface vessel. A ball valve may be screwed onto the siphon line to allow for insertion and removal of the pump barrel and seals the siphon line if the pump is removed. A stuffing box seals the pump barrel to the upper end of the siphon line to prevent air from entering the system. The stuffing box also allows the pump depth to be easily adjustable by sliding the pump in until the pump tags bottom and then tightening at any point needed.

Abstract: An unlimited stroke drive method for pumping fluid from an oil well in which the well has a tubing string extending from the earth's surface down to a fluid producing formation. The method includes the steps of positioning a pump barrel within the tubing, an upper end of the pump barrel having communication through a standing valve with the interior of the tubing string, vertically reciprocating a length of flexible cable within the tubing string to vertically reciprocate a plunger within the pump barrel to allow a lower portion to quickly fill with fluid from the producing formation and then to a downward position in which fluid within the pump barrel lower portion is transferred through a traveling valve to an area within the pump barrel above the plunger to move formation fluid from within the pump barrel to the interior of the tubing and thence to the earth's surface.

Abstract: A system and method for pumping an underground drip includes a pump barrel housing with a plunger and an elongated stroke actuator cylinder sealed to the pump barrel that vertically reciprocates the plunger. The pump barrel and plunger are preferably vented to avoid vacuum lock during pumping. The plunger pumps the fluid located in the drip upwardly to a low pressure tank or a pressurized surface vessel. A ball valve may be screwed onto the siphon line to allow for insertion and removal of the pump barrel and seals the siphon line if the pump is removed. A stuffing box seals the pump barrel to the upper end of the siphon line to prevent air from entering the system. The stuffing box also allows the pump depth to be easily adjustable by sliding the pump in until the pump tags bottom and then tightening at any point needed.

Abstract: A reciprocated pump positioned at the lower end of a string of tubing in a bore hole that provides a passageway for moving formation fluid to the earth's surface, including a pump barrel supported in communication with the tubing and a standing valve at the lower end thereof providing a first passageway through which formation fluid flows into the pump barrel, the pump barrel having an intermediate vent port providing a second entry passageway, and a tubular plunger reciprocated within the barrel and having an upper and a lower portion with a plurality of non-metallic seal rings separated by metallic spacers received on the plunger upper portion and configured to support a column of formation fluid within the tubing to substantially isolate the portion of the barrel below the non-metallic seal rings from the tubing pressure to thereby allow formation fluid to move into the pump barrel.

Abstract: A reciprocated pump positioned at the lower end of a string of tubing in a bore hole that provides a passageway for moving formation fluid to the earth's surface, including a pump barrel supported in communication with the tubing and a standing valve at the lower end thereof providing a first passageway through which formation fluid flows into the pump barrel, the pump barrel having an intermediate vent port providing a second entry passageway, and a tubular plunger reciprocated within the barrel and having an upper and a lower portion with a plurality of non-metallic seal rings separated by metallic spacers received on the plunger upper portion and configured to support a column of formation fluid within the tubing to substantially isolate the portion of the barrel below the non-metallic seal rings from the tubing pressure to thereby allow formation fluid to move into the pump barrel.

Abstract: A system and method for pumping an underground drip includes a pump barrel housing with a plunger and an elongated stroke actuator cylinder sealed to the pump barrel that vertically reciprocates the plunger. The pump barrel and plunger are preferably vented to avoid vacuum lock during pumping. The plunger pumps the fluid located in the drip upwardly to a low pressure tank or a pressurized surface vessel. A ball valve may be screwed onto the siphon line to allow for insertion and removal of the pump barrel and seals the siphon line if the pump is removed. A stuffing box seals the pump barrel to the upper end of the siphon line to prevent air from entering the system. The stuffing box also allows the pump depth to be easily adjustable by sliding the pump in until the pump tags bottom and then tightening at any point needed.

Abstract: An unlimited stroke drive method for pumping fluid from an oil well in which the well has a tubing string extending from the earth's surface down to a fluid producing formation. The method includes the steps of positioning a pump barrel within the tubing, an upper end of the pump barrel having communication through a standing valve with the interior of the tubing string, vertically reciprocating a length of flexible cable within the tubing string to vertically reciprocate a plunger within the pump barrel to allow a lower portion to quickly fill with fluid from the producing formation and then to a downward position in which fluid within the pump barrel lower portion is transferred through a traveling valve to an area within the pump barrel above the plunger to move formation fluid from within the pump barrel to the interior of the tubing and thence to the earth's surface.

Abstract: A reciprocated pump positioned at the lower end of a string of tubing in a bore hole that provides a passageway for moving formation fluid to the earth's surface, including a pump barrel supported in communication with the tubing and a standing valve at the lower end thereof providing a first passageway through which formation fluid flows into the pump barrel, the pump barrel having an intermediate vent port providing a second entry passageway, and a tubular plunger reciprocated within the barrel and having an upper and a lower portion with a plurality of non-metallic seal rings separated by metallic spacers received on the plunger upper portion and configured to support a column of formation fluid within the tubing to substantially isolate the portion of the barrel below the non-metallic seal rings from the tubing pressure to thereby allow formation fluid to move into the pump barrel.