Abstract

The invention corresponds to a mechanical hydraulic pumping unit with a radiator integrated to the chassis and a hydraulic circuit which allows it to operate with high flow rates and low pressure or with low flow rates and high pressure. This mechanical hydraulic pumping unit with a radiator integrated is used to supply a particular pressurized oil flow to a hydraulic actuator, which in turn lifts the load exerted by a string of rods and lift the hydrostatic column that is inside an oil well. The main feature of this mechanical hydraulic pumping unit with a radiator integrated is that the radiator is part of the machine's chassis and is located in the middle of two hydraulic oil tanks. The first of these tanks is the oil suction tank, while the second is the oil return tank.

IPC Classes  ?

• F04B 53/08 - CoolingHeatingPreventing freezing
• F04B 47/04 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means
• F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
• F04B 53/10 - ValvesArrangement of valves
• F15B 11/08 - Servomotor systems without provision for follow-up action with only one servomotor
• F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
• F15B 21/0423 - Cooling

Abstract

The invention relates to a hydraulic mechanical pumping unit comprising a radiator built into the chassis and a hydraulic circuit that allows operation with high flow rates and low pressure or with low flow rates and high pressure. This hydraulic mechanical pumping unit comprising a built-in radiator is used to supply a determined volume of pressurised hydraulic oil to a hydraulic actuator which, in turn, lifts the load exerted by a rod string and the hydrostatic column inside an oil well. The main characteristic of said hydraulic mechanical pumping unit comprising a built-in radiator is that the radiator forms part of the chassis of the machine and is arranged between two tanks of hydraulic oil. The first of said tanks is the oil suction tank, while the second tank is the oil return tank.

IPC Classes  ?

• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
• F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
• F04B 47/04 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means

Abstract

The invention relates to a hydraulic mechanical pumping unit comprising a radiator built into the chassis and a hydraulic circuit that allows operation with high flow rates and low pressure or with low flow rates and high pressure. This hydraulic mechanical pumping unit comprising a built-in radiator is used to supply a determined volume of pressurised hydraulic oil to a hydraulic actuator which, in turn, lifts the load exerted by a rod string and the hydrostatic column inside an oil well. The main characteristic of said hydraulic mechanical pumping unit comprising a built-in radiator is that the radiator forms part of the chassis of the machine and is arranged between two tanks of hydraulic oil. The first of said tanks is the oil suction tank, while the second tank is the oil return tank.

IPC Classes  ?

• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
• F04B 47/04 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means
• F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors

Abstract

The invention concerns a check valve with an inertial mass which is fitted in the base of the production tubing and above the progressive cavity pump (PCP) of an oil well, said valve preventing the hydrostatic column within the production tubing from falling at the moment at which the artificial rise of said column stops as a result of the PCP stopping. Preventing this phenomenon from occurring prevents the PCP from rotating in the sense opposite to that of its normal operation and from becoming blocked by particulate material deposited therein.

IPC Classes  ?

• E21B 34/08 - Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells

Abstract

The invention concerns an artificial lifting system comprising a progressive cavity motor for extracting hydrocarbons. In the system according to the invention, a fluid stored at the surface is injected by means of a pump towards the progressive cavity motor, located in the subsoil. The rotation brought about by the passage of the fluid is transmitted to a progressive cavity pump such that the hydrocarbon is urged towards the surface.

IPC Classes  ?

• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells

Abstract

The invention concerns an artificial lifting system comprising a progressive cavity motor for extracting hydrocarbons. In the system according to the invention, a fluid stored at the surface is injected by means of a pump towards the progressive cavity motor, located in the subsoil. The rotation brought about by the passage of the fluid is transmitted to a progressive cavity pump such that the hydrocarbon is urged towards the surface.

IPC Classes  ?

• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells

Abstract

The invention relates to a safety braking system for free-falling weights, comprising a dynamo as an acceleration sensor and an electric generator, which also activates the mechanism that exerts the braking force on the falling movement of a weight. The weight comprises two cables, wound in opposite directions to one another, a frame, a friction disc, and two journals on which a shaft is mounted. In addition, a drum is installed on the shaft, said drum being provided with two reels, namely, reel 1 on which the main cable that supports the weight is wound in the opposite direction to that of reel 2 on which the secondary cable is wound, said secondary cable in turn supporting the counterweight, and vice versa, corresponding to a system for retracting the main cable. Furthermore, one of the ends is provided with a speed amplifier which rotates the dynamo at the number of revolutions necessary in order to generate at least the 12 volts required in a solenoid valve. In this way, the solenoid valve opens and allows the passage of pressurised hydraulic oil to the calipers so that they close on the friction disc and exert the force required to stop the falling movement of the weight. The invention is characterised in that it is provided internally with a hydraulic oil storage unit containing an expanding bladder filled with nitrogen, which maintains the hydraulic oil at a pressure of 1,000 pounds (68 atm). This guarantees stored energy that can be used as needed in order to active the calipers which stop the disc installed on the shaft and prevent the weight from falling. The system detects when a body enters free-fall, once it has past the first 50 cm. With this mechanism the angular velocity at the brake shaft feeds the input of the speed amplifier, providing a high velocity at the output shaft of the speed amplifier and generating the voltage necessary in the dynamo in order for the solenoid valve to open.

IPC Classes  ?

• B66D 5/28 - Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
• B66B 5/06 - Applications of checking, fault-correcting or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical

Abstract

The invention relates to a hydraulic mechanical pumping unit including a vertical motor for strokes greater than 3m, which only requires a maximum power of between 746 and 5600 watts for operation. The unit comprises a frame including the hydraulic oil tank, a compartment or housing for electrical, mechanical and hydraulic components, the motor, the fan and the carburettor, all of which are housed vertically, thereby allowing the unit to be installed in smaller spaces, minimising connections and requiring less equipment, while allowing all of the components thereof to be protected from the environment (sun, rain, water). The unit includes an assembly base plate serving as a support for the solenoid valve which, in turn, allows the hydraulic oil to be distributed through three different channels, namely: a first channel which directs the oil towards the hydraulic actuator; a second channel which conveys the oil towards a relief valve which directs the oil towards the tank; and a third channel which conveys the oil through the solenoid valve towards a hose that conveys same to the filter, from where the oil is sent to the radiator and then returned to the tank. In order to simplify operation, the flow-control valve, the pressure gauge and the cut-off ball valve are housed in the inlet of the pedestal.

IPC Classes  ?

• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
• F04B 47/04 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means
• F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors

Abstract

The present invention relates to a hydraulic mechanical pumping unit with rocking effect, which comprises a compact-design power unit, a pedestal, a hydraulic actuator and a rocking system composed of movable pulleys, a fixed pulley and counterweights.

IPC Classes  ?

• E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
• F04B 47/04 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means

Abstract

The present invention relates to an improved mechanical pumping hydraulic unit for use in oil production or hydrocarbon extraction. The unit is characterized in that it has one motor (1-25), which activates a dual pump (1-15) at one end of the shaft and activates a fan (1-26) at the opposite end of the same shaft. The dual pump (1- 15) provides power to the hydraulic power circuit (1-13) and to the hydraulic recirculation circuit (1-14). The motor (1-25), along with the pump (1-15) and the fan (1- 26), are inside a metal structure (1-8), or focusing element, which serves to propel air sent by the fan (1-26) through the radiator (1-14-3) and to protect all the components of said unit, such as a tank (1-3) for the hydraulic oil, a compartment or casing for the electrical components (1-5), and a component or dry chamber (1-2) for the hydraulic instrument panel (1-7).

IPC Classes  ?

• F04B 23/04 - Combinations of two or more pumps
• F04B 47/04 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means