Abstract: In one embodiment a reverse osmosis permeate pump with shut off valve and reverse osmosis system employs bypassed feed water from the reverse osmosis membrane to drive a water wheel and gear set to reciprocate a piston back and forth between two chambers in the pump. Permeate from the membrane is introduced to the respective chambers by a pair of fluid inlets and discharged from the respective chambers through a pair of discharges to a storage tank. Flow through these respective inlets and discharges is a function of the direction in which the piston is moving and whether it is imparting a pressure or suction on a given chamber. A second piston is exposed to the pressure in the discharges from the chambers and the second piston moves between a position permitting incoming feed flow to the membrane, and a position blocking that flow upon increase in pressure in the fluid discharge from the chambers. In another embodiment, the reverse osmosis permeate pump is powered by an independent source of power.

Abstract: An energy-recovery pump or pumping system includes, in a double action embodiment, first and second cylinders wherein respective first and second pistons, mounted to a common reciprocating piston shaft, are mounted for reciprocating motion. A hydraulic pump drives the common piston shaft back and forth in accordance with a prescribed velocity profile that includes acceleration, constant velocity, and deceleration periods, as well as a short dwell time at the conclusion of each stroke during which the shaft and pistons remain stopped. Each piston divides each cylinder into first and second working volumes. Input and output valves connect a source of fluid with an output header through half of the working volumes in such a way that the fluid is received within whichever working volume is expanding and is pumped from whichever working volume is contracting, as the pistons move back and forth within their respective cylinders during a pump cycle.

Abstract: A fire fighting foam proportioner for use in providing precise proportioning of foaming agent to fire fighting liquid, e.g., water, includes a conduit incorporating a check valve and a venturi with a dual chamber piston pump having one part connected to the high pressure water source at the inlet to the conduit and the other part connected to a source of the foaming agent and arranged to pump the foaming agent through a foam conduit to the throat of the venturi where it is mixed with the water. Reversible valves responsive to pump movement are connected to the first pump part to cause it to reverse direction at the end of each stroke. A pair of one-way check valves at each of the inlet and outlet ports of the second pump part keep the foaming agent moving through the foam conduit where it is controlled by a pressure equalizing valve and a metering valve. The area of the foam conduit is controlled by the equalizing valve which includes a spool valve having pressure sensing areas at each end.

Abstract: A fluid flow reducing unit is incorporated in various mechanical systems to increase the mechanical advantage without the addition of energy. The fluids gaseous, liquid or mixtures thereof, are processed by the fluid flow reducing unit to increase the pressure of the effluent fluids when a higher pressure load is applied. The fluid flow reducing system can be employed in rockets, gas turbines, pump and motor systems, fire engine pumper water lines, blood pressure systems, steam engines, etc. An `Unidentified Flying Object-UFO` requires a Fluid Power Transmission to produce higher gas pressure for very rapid acceleration. The statement by Archimedes--`Give me a fulcrum on which to rest and I will move the earth.` relates to the application of a physical mechanical force on a lever arm. The application of a physical fluid pressure on a lever arm also does exist in the form of a Fluid Power Transmission means for greater thrust propulsion.

Abstract: A fluid driven pump uses a working fluid under pressure to run a pump for pumping a product fluid. The pump includes first and second cylinders positioned end-to-end. Each cylinder houses a piston, the pistons being linked so as to move together. A piston rod projects from an end of one of the cylinders and operates valve gear which alternatingly direct working fluid to opposite sides of one of the pistons, or to opposite sides of the assembly formed by the two linked pistons. This arrangement results in the reciprocating movement of the pistons which can then be used to pump the product fluid. In another embodiment, two pumps of the type described above are used with the piston rod of each being used to operate the valve gear controlling the other. In yet another embodiment, a rotary turbine, driven by working fluid under pressure and having a common shaft with the impeller of a centrifugal pump, is used to pump the product fluid.

Abstract: The cleaning and disinfection machine for medical devices with narrow channels particularly endoscopes, has a pressure chamber (1) in which the objects to be cleaned are inserted. A circulating pump of the machine supplies the pressure chamber with pressurized cleaning fluid. Arranged inside the pressure chamber (1) is a pressure-increase unit (2) that consists of a two-stage piston-cylinder arrangement (3, 5, 8; 4, 6, 9). The two pistons (5, 6) have different diameters and thus different effective cross-sections. The inlet side of the larger piston is fed with pressurized cleaning fluid. The outlet side (9) contains cleaning fluid that is supplied to the channel to be cleaned. The second piston has a smaller diameter so that the pressure is greater on the outlet side (chamber 9). When the circulating pump is switched off, the pistons (5, 6) are forced back into a starting position by a spring (13).

Abstract: A method and apparatus for powering a fluid pump (P) for circulation of a regenerated liquid absorber from a treating vessel or regenerator (R) to a liquid/gas contacting vessel (T) where the liquid absorber removes a predetermined component from a gas. The fluid pump (P) is driven by a shaft from fluid motor (M) and an auxiliary electric motor (E, E-1) assisting the fluid motor (M). The fluid pump (P) receives the entire output of regenerated liquid absorber from the regenerator (R) for pumping the regenerated liquid absorber to the contacting vessel (T). A bypass fluid conduit (49, 48) is utilized for initial circulation of glycol during the start up operation. A glycol measuring device (42) is effective for removing trapped air in conduits (18, 15) between the reboiler (R) and the contactor (T), and in bypass conduits (48, 49) in addition to measuring the flow rate for the liquid absorber.

Abstract: A beverage dispensing apparatus for dispensing through a nozzle a preestablished volume of a syrup and a preestablished volume of a soda to be intermixed within a nozzle prior to being dispensed into a collecting container such as a glass. The syrup side is connected to the soda side with the dispensing operation always occurring simultaneously in the preestablished ratios. The soda side includes a drive piston which is driven by the pressurized soda. The soda drive piston is physically connected to a syrup drive piston which controls the flow of the syrup to the dispensing nozzle. A single dispensing valve such as a low-power solenoid is to be used to cause the dispensing of both the soda and the syrup.

Abstract: Apparatus for providing a flow of pressurized liquid includes a hydraulic cylinder, a divider within the cylinder interior, and floating piston heads positioned in the cylinder interior on opposite sides of the divider. A double ended ram member is movably mounted in the divider and engages the piston heads. Liquid flow paths extend between subcompartments on opposite sides of the piston heads. A source of pressurized liquid delivers liquid under relatively low pressure to reciprocally move the piston heads and ram member causing intensification of pressure of liquid displaced from the cylinder. In a preferred embodiment, excess pressurized liquid passes through a filter to separate the liquid into permeate and concentrate portions.

Abstract: An electronic condiment dispenser may dispense a plurality of condiments. The condiment dispenser may include a bag support module for holding a plurality of condiment supply bags. A pump regulator module may be connected to each condiment bag and may pump a condiment from the bag to a manifold diffuser module. The pump regulator module may include a multi-chambered pump having separate chambers for isolating the pump working fluid from the condiment, so the pump working fluid does not contaminate or react with the condiment. A main case may house at least one manifold diffuser module and may be configured to support a tray carrying a large number of food targets, i.e., 6 or 12 food targets, such as hamburger buns or taco shells. A programmable control module may be connected to the pump regulator module for controlling and selectively dispensing a predetermined amount of condiment and/or number of condiments to a predetermined number of food targets.

Abstract: Cryogenic fluid piston pump functions as stationary dispensing pump, mobile vehicle fuel pump etc., and can pump vapour and liquid efficiently even at negative feed pressures, thus permitting pump location outside a liquid container. Piston inducts fluid by removing vapour from liquid in an inlet conduit faster than the liquid therein can vaporize by absorbing heat, and moves at essentially constant velocity throughout an induction stroke to generate an essentially steady state induction flow with negligible restriction of flow through an inlet port. Stroke displacement volume is at least two orders of magnitude greater than residual or dead volume remaining in cylinder during stroke changeover, and is greater than volume of inlet conduit. Cryogenic tank has a liquid compartment, a vapour compartment, and inlet and overflow conduits. Inlet conduit receives liquid from dispensing pump and widely disperses liquid into liquid tank to contact and condense vapour.

Abstract: A method for supplying at different pressures natural gas from a gas field under control of a continuous gas flow and the field pressure thereof and an apparatus for carrying out the method. The gas flow is received directly in and contained in two separate volumes constructed as a first variable volume and a second variable volume which are each cyclically varied in size synchronously by alternately increasing and decreasing the size of a corresponding volume under control of the gas flow. The increasing of the first volume effects a pressure reduction of the gas received therein for delivery to a distribution network at a reduced pressure. Reducing the size of the first volume discharges the gas at the reduced pressure and the cyclical varying of size alternately reducing and increasing thereof of the second volume under control of the gas flow effects increasing of the gas pressure to a desired higher pressure.

Abstract: An improved linear fluid motor system, which is adapted to be driven by pressurized hydraulic fluid from a hydraulic pump, includes a piston rod having a first head interacting with product fluid and a second head interacting with hydraulic fluid, a first spool valve and a second spool valve interacting with the second piston head to control a third spool valve which reverses the displacement of the piston rod at its limits of travel, a first accumulator, and a second accumulator for cushioning abrupt pressure changes in the hydraulic fluid, a heater for heating the hydraulic fluid, a control valve for controlling the product fluid pumping rate of the system, interconnections for connecting the various components of the system, stops for defining the various configurations of the system, a detent mechanism for restraining the third spool valve in its switching configurations, and a coaxial conduit for conveying the hydraulic fluid between the hydraulic pump and the system whereby the product fluid is pumped f

Abstract: A submarine is equipped with a conventional main hydraulic system and has least one hydraulic actuator located outside the vessel's pressurized hull where it is susceptible to contamination of its hydraulic fluid. The actuator is operated from an isolation system that includes a slave piston driven by a power piston from the main hydraulic system to keep a desired pressure in the secondary system by operating the power piston only as required for this purpose. Both power and slave piston positions are related and a two position limit switch is tripped by switch actuators linked to these pistons for operating the power and slave pistons. This isolation system prevents any contaminants in the external system from contaminating the internal system.

Abstract: An air control valve for directing air flow in a double-acting reciprocable motor, where the valve has a first link which is pivotally connected at one end to the motor and mechanically coupled along its length to a reciprocable motor member; a second link pivotally connected to the same point as the first link, and having an over-center spring detent mechanism to position it in either of two pivot positions; both of the links having alignable transverse slots, with a compression coil spring engaged in both slots; and a slide valve member attached to the second link and pivotally movable therewith, to direct the air flow into either of the double-acting motor drive members, the air valve toggling to its second position near the end of the motor drive stroke to cause the motor to reciprocate in the other direction.

Abstract: A hydraulically powered gas compressor receives low pressure gas and outputs a high pressure gas. The housing of the compressor defines a cylinder with a center chamber having a cross-sectional area less than the cross-sectional area of a left end chamber and a right end chamber, and a spool-type piston assembly is movable within the cylinder and includes a left end closure, a right end closure, and a center body that are in sealing engagement with the respective cylinder walls as the piston reciprocates. First and second annular compression chambers are provided between the piston enclosures and center housing portion of the compressor, thereby minimizing the spacing between the core gas and a cooled surface of the compressor. Restricted flow passageways are provided in the piston closure members and a path is provided in the central body of the piston assembly, such that hydraulic fluid flows through the piston assembly to cool the piston assembly during its operation.

Abstract: A proportioning pump for liquid additive metering having a housing with a diaphragm piston therein and inlet and outlet primary fluid lines to the housing and inlet and outlet valves in the housing for moving the piston up and down. A pair of additive pistons for pumping an additive liquid into the primary fluid with the additive pistons being moved by the diaphragm piston. An overcenter spring loaded connection connects the diaphragm piston to the inlet and outlet valves and a fail safe mechanism opens both the inlet and outlet valves in the event the spring in the overcenter connection fails. One of the additive pistons has an O-ring therein which acts as a seal and a check valve.

Abstract: A deep well pump for positioning in a bottom hole assembly and having at least one fluid pump and at least two fluid powered motors with the pump and motor pistons carried in alignment on the piston rod. The pump includes passages for delivering a power fluid to one end of each of the motor cylinders and for receiving exhaust fluid from the other end of the motor cylinders, and a valve for reversing this operation. A first sleeve is positioned around the first motor cylinder defining a power fluid path from one end of the first cylinder to one end of the second cylinder, a second sleeve is positioned around the first sleeve defining an exhaust fluid path from the other end of the first motor cylinder, and a third sleeve is positioned around the second motor cylinder defining an exhaust fluid path from the other end of the second motor cylinder, with the first and second exhaust fluid paths interconnected.

Abstract: This invention relates to a device for the generation of auxiliary pressure, and has control valves (2) arranged in a control housing (1) of a control unit. The control valves (2), depending on their position, actuate several control channels (4) leading into severan control pressure chambers (3) so that, depending on the position of the control valves (2), communication can be established between an energy source (5) and s spring-loaded servo piston (6) which, via an adjoining working cylinder (7) sealed by the servo piston (6), delivers a medium of low pressure level to an energy level of high pressure by means of a pressure piston (8), with the servo piston (6) having elastic means (11) which influences a change-over point of the control valves (2) and which, for the purpose of switching the control valves (2), can be clamped in position between a servo element (9) connected on the servo piston (6) and control rod (10) engaging the control unit.

Abstract: A vapor exhaust system including a volumeter 5 to which an air pump 7 has been coupled mechanically so that the volume of a certain amount of pumped liquid corresponds to the amount of air pumped from a fuel tank. A translatory or rotary motion provides the signal to maintain this correspondence, in which case the drive shaft 10 of the volumeter 5 is coupled to the air pump which may be executed as a gear pump. If desired, the coupling may be executed as a gear transmission 22.

Abstract: A reciprocating positive displacement pump is disclosed for pumping oenological liquids such as wines, musts, distillates, vinegars and the like, alimentary oils and other alimentary liquids and/or beverages such as fruit juices and pulpy and sugary juices. The pump is of the kind which has a reciprocating piston and distributing ball valves utilizing rubber-covered balls, and comprises a double-action hydraulic cylinder for actuating the piston, the hydraulic cylinder being fed by a central distribution unit which is in turn fed by a source of presurized fluid. The piston has a cam member mounted to its stem. The cam member is movable between contact with two limit switches upon reciprocation of the piston so as to cause direction reversal of the piston. Further, a rotating member can be provided in contact with the cam member, so as to rotate the cam member and thus, the piston stem and piston.

Abstract: A hydraulically actuated downhole pump assembly for producing a well is powered by a fluid that is pumped downhole to an engine end thereof. The pump assembly has a pump end which is connected to a source of formation fluid so that the engine end drives the pump end and the pump end lifts produced fluid to the surface of the ground. The pump end has a pump barrel and a pump piston is reciprocatingly received in sealed relationship within the pump barrel. The engine end has an outer engine barrel, and an annular valve element is reciprocatingly received in sealed relationship within the outer barrel. The valve element moves up and down between two positions of operation while an engine piston reciprocates within the annular valve element and in so doing aligns various flow passageways in a manner to alternately apply power fluid to appropriate sides of the piston and valve element to force the engine piston to reciprocate.

Abstract: The invention relates to an improved reciprocating pump providing oil for low pressure, self-contained oil-filled cables. it is particularly important to have a gas tight system in such a pumping plant since the oil in the storage tank (6) has to be kept under vacuum at all times to keep the oil in a gas-free condition. The air or gas driven oil pump (8) has two piston rod seals (9,10). The area between the two seals is provided with an inlet (11) and outlet opening (12) through which oil can be flushed from the high pressure side of the pump (8) to the top of a storage tank (6).

Abstract: A deep well pump for positioning in a bottom hole assembly and having at least one fluid pump and at least two fluid powered motors with the pump and motor pistons carried in alignment on the piston rod. The pump includes passages for delivering a power fluid to one end of each of the motor cylinders and for receiving exhaust fluid from the other end of the motor cylinders, and a valve for reversing this operation. A first sleeve is positioned around the first motor cylinder defining a power fluid path from one end of the first cylinder to one end of the second cylinder, a second sleeve is positioned around the first sleeve defining an exhaust fluid path from the other end of the first motor cylinder, and a third sleeve is positioned around the second motor cylinder defining an exhaust fluid path from the other end of the second motor cylinder, with the first and second exhaust fluid paths interconnected.

Abstract: A proportioning pump for liquid additive metering having a housing with a diaphragm piston therein and inlet and outlet primary fluid lines to said housing for moving said diaphragm piston up and down. Additive pistons for pumping an additive liquid into said primary fluid with said additive pistons being moved by said diaphragm piston.

Abstract: A hydraulic pump provides two different fluid pressure outputs from a single input. The pump includes a first double acting piston and cylinder having a pair of inlets on opposite sides of the first piston and a pair of outlets on the opposite sides of the first piston. A second double acting piston and cylinder are provided which cylinder has a pair of inlets on opposite sides of the second piston and a pair of outlets on opposite sides of the second piston. A common piston rod interconnects the pistons and means is provided for alternately supplying fluid to the first inlets of the first and second cylinders on one side of the pistons and then to the first inlets on the other side of the first and second pistons to cause the first and second pistons to reciprocate within the first and second cylinders, respectively.

Abstract: A piston-driven down hole pump and a method for using the same to lift fluid on both its upstroke and downstroke. The pump is powered by a waste water injection pump. A drive piston connected to a production piston and three-way valve power the down hole pump through the steady flow of the power fluid from the injection pump. The power fluid is exhausted into the well annulus and rises to the surface comingled with the fluid.

Abstract: A portable ventilating device for ventilating patients in the field. A reciprocating piston divides a cylinder into a pressure chamber and a spring chamber in which a compression spring acts against the piston. Gas pressure applied to the pressure chamber opposes the spring force and reciprocates the piston. As the piston reciprocates ventilating gas is forced out of the piston chamber through a ventilation line equipped with a check valve. Alternative embodiments provide gas pressure assistance to the spring, make use of the gas which powers the device as the ventilating gas, and provide adjustment of the duration for the time periods gas is applied to the cylinder.

Abstract: An oil cable pumping plant including at least one oil tank and at least one air/gas driven piston type oil pump connected to the oil tank, at least one air/gas source connected to the air/gas inlet of the pump via a pressure control. An exit for the air/gas as well as an oil exit are connected to at least one oil filled cable, and an oil flow indicator. The pump in its normal operating condition provides a predetermined oil pressure at its outlet. An oil flow control is interconnected between the oil flow indicator and the air/gas pressure control for controlling the oil.

Abstract: The invention comprises a system and method for providing compressed gas by extracting compressed gas directly from the combustion chamber of an internal combustion engine. The gas may be further compressed using an improved compressor, which in turn may be ultimately powered by the engine from which the gas is extracted. The compressor is preferably an axial drive, hydraulic compressor, with the engine being used to drive a pump which in turn provides the direct hydraulic driving force for the compressor.

Abstract: The hydraulically powered fluid pump has a spool valve which controls the direction of travel of the pump. The spool valve is designed to switch between positions relatively slowly so that in between pump cycles, the ball checks associated with the pump may return under the force of gravity to their seats. This natural gravity return produces greatly decreased noise levels and increased seat life compared with the slamming action present in current pumps. The spool valve is viscous damped and of a closed centered construction to allow the relatively slow switchover to take place.

Abstract: An overall pump assembly for smoothly pumping a compressable liquid from a supply is disclosed herein along with two intensifiers which form part of the assembly and a control arrangement for driving the intensifiers in specific phase relationship to one another. Each of the intensifiers includes its own reciprocating piston and a control device interconnected in feedback relationship with the piston in order to follow the latter through its movement. In each of the specific intensifiers disclosed, its piston and control device are interconnected by cable means configured to cause the control device to rotate about its own axis in a manner corresponding to the movement of the piston.

Abstract: A downhole hydraulically actuated pump assembly has an engine end and a pump end. A traveling valve assembly is included in both the engine end and the pump end. A discharge guide assembly is interposed between the engine and the pump ends, and thereby enables the connecting rod between the engine and pump ends to be greatly increased in length for a specific size. The traveling valve of the pump end includes a lost motion coupling by which the valve is shifted each stroke of the engine. A formation fluid passageway extends from the lower end of the pump, directly through a rod extension, and into the traveling valve. Accordingly, this novel combination and improvements provide a downhole pump assembly having the maximum diameter engine and pump piston.

Abstract: An apparatus for metering, mixing, dispensing, testing and purging liquid compositions composed of predetermined ratios of reactive liquid components. Pressurized sources of the component liquids are coupled to valve mechanisms and liquid metering devices. The materials are metered in predetermined ratio to each other and fed to a mixer to be intimately combined and dispensed at a demand station for the intended use. A valve mechanism is provided immediately following the pressurized source of one of the liquids and upon operation of the valve this liquid is diverted around the valve and metering device and is fed directly into the first area in which the two liquids are co-mingled, thereby purging the entire area in which the co-mingled liquids exist. Upon operation of the purging valve, the entire operation of the valves and metering devices are stopped thereby significantly reducing the wear and tear on this portion of this apparatus.

Abstract: A downhole hydraulically actuated pump has a large diameter power piston and a large diameter production pistion. A traveling valve assembly is located in the power piston and in the production piston, while fluid flow occurs through a hollow connecting rod, thereby providing a downhole pump with a maximum diameter piston assembly at the engine and production ends. A discharge guide conducts spent power fluid from the interior of the hollow connecting rod. Flow of production fluid to the traveling valve assembly of the production piston is provided through a hollow connecting rod extension. In one form of the invention, spent power fluid to which treatment fluid has been added is discharged at the bottom end of the pump assembly, thereby enabling chemical treatment to be carried out at the bottom of the wellbore.

Abstract: A liquid motor is driven by pressurized wet glycol, received from an absorber of a natural gas dehydrating system, and utilizes the energy of the pressurized wet glycol to provide the primary source of energy for operating a pump for pumping of dry glycol from a reboiler to the absorber. A gas driven motor regulates the stroking rate of the glycol driven motor. The liquid motor and pump each have a two stage double acting piston in cylinders with fluid intake and exhaust valving and passages to alternately fill and exhaust the motor cylinders while the opposing pump cylinders are simultaneously alternately filled and exhausted. A spool type valve rod, associated with the glycol driven motor, is operated by the gas driven motor to regulate the rate of reciprocation of the glycol driven motor and to provide a secondary source of energy therefor.

Abstract: A double displacement downhole pump for use in oil wells is provided. The pump comprises a body defining a drive cylinder and pump cylinder which are axially-spaced apart. A drive piston is coupled directly to a pump piston by means of a sleeve connector. The sleeve connector is received on a tension member which extends axially through the pump. The tension member acts to counteract deformity of the sleeve connector during use. The advantage of this construction is that it allows virtually unlimited separation distance between the drive piston and pump piston, which in turn allows a virtually unlimited stroke length for the pump.

Abstract: A fluid pumping system for use with a natural gas dehydrating system or the like having an absorber apparatus for removing water from wet natural gas to produce dry natural gas by use of a desiccant agent such as glycol, and a glycol treater apparatus for producing a source of dry glycol from wet glycol received from the absorber apparatus including a main body having a control bore therethrough for receiving an elongate piston shaft; an elongate main piston shaft reciprocally slideably mounted in the central bore; first and second cylinders removeably mounted on opposite sides of the main body in annular centered relationship with respect to the piston shaft; first and second main pistons mounted at opposite ends of the piston shaft and sealingly slidingly received within the first and second cylinders, each piston dividing an associated cylinder cavity into a dry glycol pumping chamber and a wet glycol driving chamber; and each dry glycol pumping chamber being operatively associated with a pumping chamber i

Abstract: A downhole, electro-hydraulic pump assembly, having a hydraulic power piston connected to a double-acting production piston is disclosed. Hydraulic power for operating the power piston is developed downhole by a mechanical pump which is driven by an electrical motor carried within the pump housing. The electrical motor is energized by high-cycle electrical power conducted from a surface facility for increased pumping capability in very deep wells. Long stroke capability is provided by an annular piston and a tubular connecting ram which ride on a tensioned guide tube. The effective production piston area is maximized for efficient production in both up-stroke and down-stroke by conducting the flow of formation fluid produced in the down-stroke through the bore of the tensioned guide tube.

Abstract: The invention relates to apparatus for and a method of remotely reversing the operation of a power piston in a power cylinder automatically to pump oil, corrosive or wax bearing fluids in response to unidirectional high pressure flow. The flow of high pressure fluid driving the piston in one direction may be reversed in the piston to drive the piston in the opposite direction at the end of the respective strokes by establishing collapsible chambers for the high pressure fluid within the piston. Each chamber is collapsed toward the end of alternate strokes by the reversing piston striking a stop slightly before the end of the stroke to partially collapse said chamber as a result of further movement of the power piston. At the conclusion of each stroke, all valving is closed and the high pressure entering the collapsed chamber now exerts force against the reversing piston, but since the reversing piston is against the stop, the force is oppositely directed to reverse the direction of the power piston.

Abstract: A fluid operated pump for use in a vertical orientation includes an outer casing with a closure member disposed at one end thereof. A piston is operatively mounted for reciprocation within the outer casing and defines a first fluid chamber between the closure member, the outer housing and a first face of the piston. A first casing is provided at a point spaced from the closure of the housing. A second fluid chamber is formed between the outer housing, the first casing and a second face of the piston. A rod member is operatively disposed for reciprocation within the outer housing. The first piston member is affixed to one end of the rod member. A second casing is provided which is spaced at a predetermined distance from the first casing. A chamber is defined between the outer housing and the first and second casings. A plurality of tubes having inner and outer surfaces are disposed within the chamber and define a plurality of fluid passages between the inner and outer surfaces and the first and second casings.

Abstract: An improved system for lifting formation fluid from a well bore to a surface facility is disclosed. Rigid production tubing and sucker rods are replaced by flexible, composite production tubing in which a production conduit, power conductors, signal conductors, hydraulic/pneumatic conduits and a load-bearing tension member are enclosed by a flexible, tubular covering. The load-bearing member of the flexible production tubing is mechanically coupled to a submersible pump. The pump includes driving means such as an electrical motor, hydraulic motor or pneumatic motor which is driven downhole by electrical or hydraulic/pneumatic power transmitted through auxiliary conduits in the flexible production tubing. The flexible production tubing is wound about a truck-mounted reel for convenient transport to and from a well site. A submersible pump is attached to the end of the flexible tubing and is played out from the reel through the well casing to the producing formation.

Abstract: A warm water storage system for supplying warm water to a network with water under pressure characterized in that the storage is pressureless and takes place in a ventilated container, and that between the take-off region of the container and the warm water supply network is incorporated a booster pump.

Abstract: A liquid motor is driven by pressurized wet glycol, received from an absorber of a natural gas dehydrating system, and utilizes the energy of the pressurized wet glycol to provide the primary source of energy for operating a pump for pumping of dry glycol from a reboiler to the absorber. A gas driven motor regulates the stroking rate of the glycol driven motor. The liquid motor and pump are provided by a single stage double acting piston in a cylinder with fluid intake and exhaust valving and passages to alternately fill and exhaust the motor side of the cylinder while the opposite pump side of the cylinder is simultaneously alternately filled and exhausted. A spool type valve rod, associated with the glycol driven motor, is operated by the gas driven motor to regulate the rate of reciprocation of the glycol driven motor and to provide a secondary source of energy therefor. Intake and exhaust of wet glycol to the motor side of the cylinder is controlled by gas applied to another spool type valve rod.

Abstract: A downhole, electro-hydraulic pump assembly, having a hydraulic power piston connected to a double-acting production piston is disclosed. Hydraulic power for operating the power piston is developed downhole by a mechanical pump which is driven by an electrical motor carried within the pump housing. The electrical motor is energized by high-cycle electrical power conducted from a surface facility for increased pumping capability in very deep wells. Long stroke capability is provided by an annular piston and a tubular connecting ram which ride on a tensioned guide tube. The effective production piston area is maximized for efficient production in both up-stroke and down-stroke by conducting the flow of formation fluid produced in the down-stroke through the bore of the tensioned guide tube.

Abstract: Apparatus for pumping a liquid from a well comprises a drive unit on the surface, a well-bottom pump unit, two supply lines interconnecting the drive unit and the pump unit and a liquid discharge line extending from the pump unit to the surface for discharge of liquid. The pump unit has a drive piston which is reciprocated within a drive cylinder by applying pressure alternately by means of a changeover valve to the two supply lines. The drive piston drives a double acting driven piston which pumps oil from a well. The changeover valve is controlled by a logic unit which receives signals from sensors measuring the pressure and/or flow rate in a return line.

Abstract: A liquid motor is driven by pressurized wet glycol, received from an absorber of a natural gas dehydrating system, and utilizes the energy of the pressurized wet glycol to provide the primary source of energy for operating a pump for pumping of dry glycol from a reboiler to the absorber. A gas driven motor regulates the stroking rate of the glycol driven motor. The liquid motor and pump each have a two stage double acting piston in cylinders with fluid intake and exhaust valving and passages to alternately fill and exhaust the motor cylinders while the opposing pump cylinders are simultaneously alternately filled and exhausted. A spool type valve rod, associated with the glycol driven motor, is operated by the gas driven motor to regulate the rate of reciprocation of the glycol driven motor and to provide a secondary source of energy therefor.

Abstract: A double acting multistage hydraulically driven gas compressor using a free floating piston including a hydraulic piston and a number of gas compressing pistons, those gas compressing pistons being sealed by high pressure oil supplied from the hydraulic drive stage.

Abstract: In situ (subsurface) methods and devices are described for releasing gaseous hydrocarbons and steam from solution in water or brine, from captured bubbles in formation pores, and from hydrate deposits. With geopressured brines the volume of the brine is reduced so that its volume is less than the sandstone pore volume which holds the brine; at this point the reservoir creates a gas cap of methane and steam which can be produced. Gas caps are formed in natural domes, artificial domes are developed, down-hole engines and pumps are powered both by in situ forces and by surface-generated forces; all are described.

Abstract: A device for transferring pressure from one fluid stream to another utilized in conjunction with a storage vessel where fluid is stored at ambient pressure and a desired temperature. An entering fluid stream at another temperature is introduced to the device under pressure and the energy of the fluid stream is utilized to pump a second fluid stream of approximately the same flow and pressure from the vessel. The entering fluid flows into the vessel at approximately ambient pressure at its original temperature where it replaces the removed fluid.