Abstract: The invention concerns a unitized access floor system, a method to install it, and automatized leveling tools. The access floor comprises an assembly of modular stringer frames joined to form a layout. Pedestals for vertical leveling of the modular stringer frame are attached to the stringer frame, or can be hinged to the stringer frame during manufacture, and can fold down from within the stringer frame to facilitate stacking, packaging and shipping from the factory. The primary automatized leveling tool involves a rotating driving female socket coinciding with the layout of the modular stringer frame, matting with the leveling pedestals. The automatized tool has a central motor with variable speeds and reversible independent gear drives or multiple motors. Modular stringer frames are leveled adjacent to each other forming a matrix comprising modular stringer frames which receive floor panels interlocking adjacent stringer frames.

Abstract: The invention generally concerns a submersible well pumping system comprising an axially elongated housing having a diameter less than the bore hole of the well, a multi-chamber hydraulically driven diaphragm pump, suspended in the well. The pump is driven by a self-contained, closed hydraulic system, activated by an electric or hydraulic motor. The flow of working fluid into and out of the working fluid sub-chambers is controlled by a two state main valve with a means to insure the main valve is completely switched, in turn controlled by a control valve which senses the differential pressure across the working diaphragm and generates a hydraulic signal to change the state of the two state main valve, typically when either diaphragm reaches the top of the pumping stroke. Singly or in combination, the means to assure the main valve is completely switched between the two states is an energy storage device, hysterisis in the control valves and or a two position latch the main valve.

Abstract: The invention generally concerns an arrangement of a low volume submersible pump connected to a downhole gravity type oil-water separator. The low volume submersible pump is electrically powered using a flexible electrical cable that connects between the pump and electric power located at the ground surface. The low volume submersible pump is typically a positive displacement pump such as a piston pump or a hydraulically driven diaphragm pump but could be a centrifugal pump if the volumes produced are compatible with this method. The separator is located above or below the pump and is defined by an enclosed, pressure-tight volume created by a separate container or by two or three downhole packers. Located in the separator is a control valve that regulates the flow of oil and water from the separator to discharge tubes connected to the surface or to additional downhole apparatus.

Abstract: The invention generally concerns a submersible well pumping system comprising an axially elongated housing having a diameter less than the bore hole of the well, a multi-chamber hydraulically driven diaphragm pump, suspended in the well using coiled tubing, in which the coiled tubing contains one or more electrical cables to provide power to the pump from the surface. The pump is driven by a self-contained, closed loop hydraulic system, activated by an electric or hydraulic motor. The flow of working fluid into and out of the pumping chambers is controlled by a two state snap-acting valve, in turn controlled by a sensor which senses the proximity of the working diaphragm and generates an electrical signal to change the state of the valve, typically when either diaphragm reaches the bottom of the pumping stroke.