Abstract: A linear pump and motor system includes a motor, rotary-to-linear mechanism, pressure compensation device (PCD), and gas mitigation assembly. The rotary-to-linear mechanism may translate rotation of a motor into linear motion to provide a pumping action. A PCD may minimize a pressure differential between lubrication fluids and external fluids. A gas mitigation assembly may provide a mechanism that mechanically opens a valve. In some embodiments, a PCD may be utilized separately from the linear pump. In some embodiments, a gas mitigation assembly may be utilized separately from the linear pump.

Abstract: A linear pump and motor system includes a motor, rotary-to-linear mechanism, pressure compensation device (PCD), and gas mitigation assembly. The rotary-to-linear mechanism may translate rotation of a motor into linear motion to provide a pumping action. A PCD may minimize a pressure differential between lubrication fluids and external fluids. A gas mitigation assembly may provide a mechanism that mechanically opens a valve. In some embodiments, a PCD may be utilized separately from the linear pump. In some embodiments, a gas mitigation assembly may be utilized separately from the linear pump.

Abstract: The system and method of the present invention includes an electrical to mechanical converter (EMC), such as a motor, and a hydraulic pump-and-cylinder arrangement that is connected to the electrical to mechanical converter for input, and to a sucker rod pump for output, in at least one embodiment. The entire assembly can be deployed below the level of the well fluid in a well. The EMC-driven hydraulic pump and cylinder can provide reciprocating linear motion to operate the sucker rod pump. In contrast, this linear motion is normally provided by sucker rods connected to a plunger inside a pump barrel and a pumping unit on the surface. The invention provides the required linear motion for the sucker rod pump to operate, but without the need for sucker and a surface pumping unit.