Other

Sustainx, Inc.

Micheal Neil Scott

Troy O McBride

Benjamin R Bollinger

Patrick Magari

Robert Cook

Jason Paul Allen

Benjamin Cameron

Andrew Shang

Lee Doyle

Timothy Wilson

Dimitri Deserranno

Justin Michael Jackson

Edwin Dixon Conn, Iii

Brandy Marie Wallace

A system for energy recovery from a rod pump includes a reversible hydraulic pump; a variable speed reversible motor-generator connected to the reversible hydraulic pump; and a variable speed drive that operates the motor-generator to rotate the reversible hydraulic pump in a forward direction to pump hydraulic fluid to the rod pump during an upstroke, and to operate the motor-generator in a generator mode in which a weight of a rod string lowers a piston in the rod pump during a downstroke to pump hydraulic fluid to rotate the hydraulic pump in reverse such that the motor-generator generates electricity, and the variable speed drive modulates a speed of the motor-generator during the downstroke to modulate a speed of the reversible hydraulic pump to control a rate of flow of hydraulic fluid through the reversible hydraulic pump and thereby modulate a rate of downward motion of the rod string.

Rod pump having a hydraulic cylinder and a variable speed reversible motor-generator

A system includes, in an exemplary embodiment, a hydraulic cylinder having a barrel, a piston connected to a rod string of the rod pump, and a pressure chamber; a reversible hydraulic pump connected to the pressure chamber; and a motor-generator having a rotor shaft connected to a coupling shaft of the pump. The motor-generator operates in a motor mode to rotate the rotor and coupling shafts in a forward direction so that the hydraulic pump pumps hydraulic fluid to the pressure chamber to raise the piston and rod string in an upstroke, and operates in a generator mode in which a weight of the rod string displaces the piston in a downstroke to pump hydraulic fluid from the pressure chamber to rotate the pump coupling shaft and the rotor shaft in a reverse direction such that the motor-generator generates electricity. A variable speed drive modulates the speed of the motor-generator.

Method and system for energy recovery from a rod pump

A drilling rig mobility system moves a drilling rig or similar structure in an oilfield or similar environment and includes independently controllable positioning shoes attaching to the drilling rig and controllable through separate and coordinated position control commands. Each positioning shoe may be individually addressed to reposition the drilling rig. Each positioning shoe includes a hydraulic actuator and wireless control circuitry. The hydraulic actuator provides vertical, horizontal and rotational force in response to wireless control signals for wireless position and control data and instructions with a remote wireless communications device. A cylinder stomper vertically elevates the hydraulic actuator and receives and transfers the vertical and rotational force. A foot assembly transfers the horizontal force from the hydraulic actuator. A positioning shoe cylinder stomper and positioning shoe traverse cylinder provide infinitely variable position control.

Method and system for positioning a drilling or other large structure using attached positioning shoes with individually addressable wireless vertical and rotational control

In various embodiments, pneumatic cylinder assemblies are coupled in series pneumatically, thereby reducing a range of force produced by or acting on the pneumatic cylinder assemblies during expansion or compression of a gas.

Energy storage and generation systems and methods using coupled cylinder assemblies

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Kingwood, TX, United States of America

Micheal Neil Scott