Abstract: A long-stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a crown mounted atop the tower; a sprocket supported by the crown and rotatable relative thereto; and a belt. The unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket; and a sensor for detecting position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: In one embodiment, a rod pump comprises a barrel and a plunger disposed within the barrel. The plunger comprising a nickel layer disposed thereon, and a chrome layer disposed on the nickel layer. In another embodiment, a rod pump comprises a barrel, and a plunger disposed with the barrel. The barrel comprises a nickel layer disposed thereon, and a chrome layer disposed on the nickel layer. In yet another embodiment, a rod pump comprises a barrel and a plunger disposed within the barrel, wherein each of the barrel and plunger has a nickel layer and a chrome layer disposed thereon. In yet another embodiment, a method of processing a rod pump comprises depositing a nickel layer on a barrel or a plunger of the rod pump, and depositing a chrome layer on the nickel layer.

Abstract: A long-stroke pumping unit for driving rod includes a tower and a counterweight assembly movable along the tower. A crown is mounted atop the tower, and a sprocket is supported by the crown and rotatable relative to the crown. A belt connects the counterweight assembly to the rod. The unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket. A sensor is used to detect a position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: A tubing pump includes a seal housing insertable into a production string of tubing with a seal assembly mounted in an interior of the seal housing. The assembly includes at least an upper seal and seal holder and a lower seal and seal holder, each seal energizable by fluid to provide a fluid-tight seal around a reciprocating tubular member. The seals and holders are isolated from each other in a manner whereby the lower seal remains un-energized until the seal above it fails.

Abstract: A barrier assembly for use with a downhole pump includes a first tubular adapter, a second tubular adapter, and a braided sleeve disposed between the first tubular adapter and the second tubular adapter. The sleeve is configured to block passage of a particulate.

Abstract: A wiper assembly may be used to prevent wellbore debris from entering an operating region of a pump. The wiper assembly may include a housing, a wiper member, a backing member, and a biasing member. The biasing member may bias the backing member into engagement with the wiper member, and thereby bias the wiper member into engagement with a tapered surface of the housing. The wiper member may include a corresponding tapered surface, which thereby forces the wiper member radially inward into engagement with an operating member of the pump.

Abstract: A long-stroke pumping unit includes a tower; a counterweight assembly movable along the tower; a crown mounted atop the tower; a sprocket supported by the crown and rotatable relative thereto; and a belt. The unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket; and a sensor for detecting position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: In one embodiment, a rod pump comprises a barrel and a plunger disposed within the barrel. The plunger comprising a nickel layer disposed thereon, and a chrome layer disposed on the nickel layer. In another embodiment, a rod pump comprises a barrel, and a plunger disposed with the barrel. The barrel comprises a nickel layer disposed thereon, and a chrome layer disposed on the nickel layer. In yet another embodiment, a rod pump comprises a barrel and a plunger disposed within the barrel, wherein each of the barrel and plunger has a nickel layer and a chrome layer disposed thereon. In yet another embodiment, a method of processing a rod pump comprises depositing a nickel layer on a barrel or a plunger of the rod pump, and depositing a chrome layer on the nickel layer.

Abstract: A pivoting member is coupled to the stuffing box to allow the stuffing box to move in a radial direction relative to a wellhead.

Abstract: A tubing pump includes a seal housing insertable into a production string of tubing with a seal assembly mounted in an interior of the seal housing. The assembly includes at least an upper seal and seal holder and a lower seal and seal holder, each seal energizable by fluid to provide a fluid-tight seal around a reciprocating tubular member. The seals and holders are isolated from each other in a manner whereby the lower seal remains un-energized until the seal above it fails.

Abstract: A barrier assembly for use with a downhole pump includes a first tubular adapter; a second tubular adapter; a braided sleeve disposed between the first tubular adapter and the second tubular adapter, wherein the sleeve is configured to block passage of a particulate.

Abstract: The present invention relates to an apparatus and method for securing a box cover to a watthour meter socket box. In certain embodiments, the apparatus has a clamping member that fits over a wall of a meter box, and a lock housing that locks to the clamping member after a box cover has been installed, thereby securing the cover to the box in a manner such that the box cover cannot be installed unless the clamping member has been installed correctly. In various other embodiments, the clamping member consists of a clamp disposed between a clamp actuating member and a fastening shelf. In various other embodiments, the clamp includes a stopping member for indicating when the clamp actuating member is actuated into a fully secured position. Other embodiments relate to a locking bracket and a lock housing wherein the locking bracket generally comprises a clamping member and a fastening lever that attaches to a wall of a meter box base.

Abstract: A wiper assembly may be used to prevent wellbore debris from entering an operating region of a pump. The wiper assembly may include a housing, a wiper member, a backing member, and a biasing member. The biasing member may bias the backing member into engagement with the wiper member, and thereby bias the wiper member into engagement with a tapered surface of the housing. The wiper member may include a corresponding tapered surface, which thereby forces the wiper member radially inward into engagement with an operating member of the pump.

Abstract: The present disclosure relates to an apparatus and methods for securing a box cover to a watt-hour meter box base. In certain embodiments, the apparatus consists of a unitary member incorporating a plurality of flange members adapted for securing at least a portion of a top of a watthour meter box lid to a portion of a top front flange of a watthour meter box base. In various other embodiments, the unitary member consists of a unitary member adapted to engage a portion of a meter box lid. In various other embodiments, the member includes integrated opposed tension-receiving members.

Abstract: The present disclosure relates to an apparatus and methods for securing a box cover to a watt-hour meter box base. In certain embodiments, the apparatus consists of a unitary member incorporating a plurality of flange members adapted for securing at least a portion of a top of a watthour meter box lid to a portion of a top front flange of a watthour meter box base. In various other embodiments, the unitary member consists of a unitary member adapted to engage a portion of a meter box lid. In various other embodiments, the member includes integrated opposed tension-receiving members.

Abstract: When securing a watthour meter to a meter box base, a meter sealing ring is typically used. A quick-fastening watthour meter retaining member is provided, in certain embodiment of the present invention, to reduce installation time and generally comprises a circular band, a connector housing member, and a receiver housing member. The connector housing member and a receiver housing member are preferably mounted to the terminus ends of the circular band. A portion of the connector housing member, comprising locking protrusions or “teeth”, is adapted to engage, with a ratchet-type action, in one example embodiment, and fasten into the receiver housing member, which contains, a pre-installed “padlock type” frangible sealing device in an example embodiment. Removal of the ring is accomplished by simply cutting, in one embodiment, and removing the frangible sealing device and allowing the housings to disengage from each other.

Abstract: An apparatus for securing first and second ends of a meter sealing ring, the meter sealing ring adapted for use in installing a meter to a watthour meter box. The apparatus comprises a lock having a head member and a shank portion comprising moveable locking members, the shank portion being insertable through an aperture formed in the first end of the sealing ring. The apparatus further comprises at least a retaining sleeve adapted to capture the shank portion, wherein the lock is retained on the first end of the sealing ring.

Abstract: An apparatus for securing first and second ends of a meter sealing ring, the meter sealing ring adapted for use in installing a meter to a watthour meter box. The apparatus comprises a lock having a head member and a shank portion comprising moveable locking members, the shank portion being insertable through an aperture formed in the first end of the sealing ring. The apparatus further comprises at least a retaining sleeve adapted to capture the shank portion, wherein the lock is retained on the first end of the sealing ring.

Abstract: An apparatus for connecting a plurality of structures, such as ends of a sealing ring, with each end defining an aperture therein and with the ring being adapted to mount a meter to a meter box structure. The apparatus comprises a locking pin with a distal end adapted to be insertable through each of the apertures of the first and second ends of the ring. The locking pin comprises a head member having at least an engageable end and a fracturable member. The locking pin further comprises a shaft portion having the distal end. The apparatus further comprises a lock housing adapted to retain at least a part of the shaft portion such that the first and second ends of the ring are connected between the head member of the locking pin and the lock housing. The head member has an outer surface adapted to receive at least two opposing forces, the at least two opposing forces being of sufficient magnitude to break the fracturable member.

Abstract: The present disclosure relates to an apparatus and methods for securing a box cover to a watt-hour meter box base. In certain embodiments, the apparatus consists of a unitary member incorporating a plurality of flange members adapted for securing at least a portion of a top of a watthour meter box lid to a portion of a top front flange of a watthour meter box base. In various other embodiments, the unitary member consists of a unitary member adapted to engage a portion of a meter box lid. In various other embodiments, the member includes integrated opposed tension-receiving members.