CN105156078B - The hydraulic oil producing device that oil extraction is used - Google Patents

Abstract

The invention discloses a hydraulic oil extraction device used in crude oil extraction, which includes an oil tank, a plunger, a pump barrel, a swimming valve and an oil pipe, and is characterized in that: the upper outlet of the oil pipe communicates with the inner cavity of the oil tank through two communicating pipes, One connecting pipe is provided with an oil outlet valve, the other connecting pipe is provided with a one-way check valve and a hydraulic pump, the lower end of the oil pipe is provided with a fixed valve cover, the bottom of the fixed valve cover is provided with a pump cylinder, There is a floating valve, the upper end of the floating valve is connected and fixed with the lower end of the plunger, the fixed valve spool is arranged in the cavity of the fixed valve spool, the central through hole of the fixed valve spool is set and fixed on the sealing sliding sleeve, the plunger The upper end of the upper end passes upwardly through the through hole of the sealing sliding sleeve and the upper end of the fixed valve cover and is fixedly connected with the baffle plate, and the spring is sleeved on the plunger between the fixed valve cover and the baffle plate. The invention adopts crude oil to carry out energy transfer through oil pipes to exploit crude oil, saves equipment such as sucker rods and cables, and reduces equipment manufacturing costs.

Description

Hydraulic oil extraction device used in crude oil extraction

technical field

The invention relates to a crude oil extraction device, in particular to a hydraulic oil extraction device used in crude oil extraction.

Background technique

In the exploitation of crude oil, there are currently two oil extraction methods, one is the rod oil extraction method, the power device is on the ground, and the downhole pump is driven by the sucker rod to carry out crude oil extraction. There are pumping unit oil production system and screw pump oil production system. The other is the rodless oil production method, the power unit is in the downhole, and the energy is transmitted to the power unit through cables or high-pressure pipes to drive the downhole pump to run. There are submersible centrifugal pumps, submersible tube pumps, hydraulic piston pumps, etc. The disadvantages of these oil extraction devices are: the energy is transmitted to the bottom of the well through sucker rods, cables, etc., the equipment is bulky, the energy consumption is large, the downhole operation is complicated and prone to failure, and the cost of crude oil extraction is high.

Contents of the invention

The purpose of the present invention is to provide a simple structure, easy to operate, use crude oil to transmit energy through oil pipes to exploit crude oil, save equipment such as sucker rods, cables, etc., lower equipment manufacturing costs, simplify operating procedures, and effectively reduce crude oil extraction costs. The hydraulic oil extraction device used in crude oil extraction.

In order to achieve the above object, the technical solution adopted in the present invention is: the hydraulic oil extraction device used in the crude oil extraction includes an oil tank, a plunger, a pump barrel, a swimming valve and an oil pipe, the oil tank is arranged on the ground, and the casing of the oil well The upper part is fixed with a hanger, the oil pipe is set in the casing cavity, and the upper end of the oil pipe is fixed on the hanger. There is an oil outlet valve on the top, and a one-way check valve and a hydraulic pump are installed on the other connecting pipe. The one-way check valve is located between the hydraulic pump and the oil pipe, and a fixed valve cover is fixed at the lower end of the oil pipe. The bottom of the cover is fixed with a pump barrel, and a floating valve is arranged in the pump barrel. The floating valve and the pump barrel are in dynamic sealing fit. The oil inlet of the floating valve is located in the cavity of the pump barrel below the floating valve. The oil outlet of the movable valve is located in the cavity of the pump cylinder above the movable valve, the upper end of the movable valve is connected and fixed with the lower end of the plunger, and the fixed valve spool is arranged in the valve cover cavity of the fixed valve, and the oil outlet of the fixed valve cover The fixed valve core seat is sealed on the oil inlet port at the bottom of the fixed valve cover, the central through hole of the fixed valve core is set and fixed on the sealing sliding sleeve, and the upper end of the plunger passes through the sealing sliding sleeve upwards. The sleeve and the through hole at the upper end of the fixed valve cover are fixedly connected with the baffle plate, the plunger is provided with a spring to drive the plunger to move up and down, and the sealing sliding sleeve and the plunger are in a dynamic sealing fit.

The spring is sheathed on the plunger between the fixed valve cover and the baffle.

The upper end of the fixed valve cover is fixed with a centralizing pipe, and the spring and the baffle are arranged in the centralizing pipe.

The valve cover of the fixed valve is fixedly arranged on the lower port in the oil pipe cavity.

The sealing sliding sleeve and the fixed valve spool are made as a whole.

The oil outlet valve adopts a solenoid valve.

The oil tank is provided with an oil discharge port.

As an improvement, the spring is sleeved on the plunger between the fixed valve cover and the floating valve, the upper end of the spring is fixed on the lower end of the fixed valve cover, and the lower end of the spring is fixed on the upper end of the floating valve or the plunger the lower end.

The beneficial effects of the present invention are: compared with the currently used oil extraction device, the structure is simple, the operation is convenient, crude oil is used for energy transfer through oil pipes to exploit crude oil, equipment such as sucker rods and cables are omitted, and equipment manufacturing costs are reduced. The operating procedures are simplified, the cost of crude oil extraction is effectively reduced, and the economic benefits of oil extraction operations are improved.

Description of drawings

Fig. 1 is a schematic sectional view of the structure of the present invention.

In the figure: 1. Oil tank; 2. Oil outlet valve; 3. Hydraulic pump; 4. One-way check valve; 5. Hanger; 6. Casing; 7. Oil pipe; 8. Centralizing pipe; 9. Spring; 10. Plunger; 11. Fixed valve spool; 12. Fixed valve cover; 13. Sealing sleeve; 14. Swimming valve; 15. Pump barrel; 16. Baffle.

detailed description

Make the present invention with reference to Fig. 1. The hydraulic oil extraction device used in crude oil extraction includes an oil tank 1, a plunger 10, a pump barrel 15, a swimming valve 14 and an oil pipe 7. The oil tank 1 is set on the ground, and the casing 6 of the oil well is fixed with a hanger 5 , the oil pipe 7 is arranged in the cavity of the casing 6, and the upper end of the oil pipe 7 is fixed on the hanger 5, and it is characterized in that: the upper outlet of the oil pipe 7 communicates with the inner cavity of the oil tank 1 through two communicating pipes, one of which is There is an oil outlet valve 2 on the top, and a one-way check valve 4 and a hydraulic pump 3 are installed on the other connecting pipe. The one-way check valve 4 is located between the hydraulic pump 3 and the oil pipe 7. The pressurized injection of crude oil flows through the one-way check valve 4 and then enters the oil pipe 7. A fixed valve cover 12 is fixed at the lower end of the oil pipe 7, and a pump barrel 15 is fixed at the bottom of the fixed valve cover 12. The pump barrel 15 is provided with a floating valve 14, which is a dynamic sealing fit between the floating valve 14 and the pump cylinder 15. The oil inlet of the floating valve 14 is located in the cavity of the pump cylinder 15 below the floating valve 14. The oil outlet is located in the cavity of the pump cylinder 15 above the floating valve 14. The upper end of the floating valve 14 is connected and fixed with the lower end of the plunger 10. The cavity of the fixed valve valve cover 12 is provided with a fixed valve spool 11, and the fixed valve cover The oil outlet of 12 is located in the oil pipe 7 cavity, the fixed valve spool 11 is sealed on the oil inlet at the bottom of the fixed valve cover 12, the central through hole of the fixed valve spool 11 is set and fixed on the sealing sliding sleeve 13, and the column The upper end of the plug 10 is fixedly connected with the baffle plate 16 after passing through the sealing sliding sleeve 13 and the upper end of the fixed valve cover 12, and the spring 9 is sleeved on the plunger 10 between the fixed valve cover 12 and the baffle plate 16. , Between the sealing sliding sleeve 13 and the plunger 10 is a dynamic sealing fit.

The upper end of the fixed valve cover 12 is fixedly provided with a centralizing pipe 8 , and the spring 9 and the baffle plate 16 are arranged in the centralizing pipe 8 .

The fixed valve cover 12 is fixedly arranged on the lower port in the cavity of the oil pipe 7 .

The sealing sliding sleeve 13 and the fixed valve core 11 are made as a whole.

Described oil outlet valve 2 adopts electromagnetic valve, so that operate.

The oil tank 1 is provided with an oil drain for additional storage of crude oil.

When using the present invention, during the downstroke, the oil outlet valve 2 is closed, the hydraulic pump 3 operates, the one-way check valve 4 is opened, and the A liter of crude oil in the oil tank 1 is sent into the cavity of the oil pipe 7, and the pressure in the cavity of the oil pipe 7 increases , the fixed valve spool 11 is sealed on the oil inlet of the fixed valve cover 12 by its own weight, and is in a closed state. The plunger 10 moves downward under the action of the oil pressure in the oil pipe 7, and compresses the spring 9, and the plunger 10 drives Swimming valve 14 runs downward along pump barrel 15, and the space of pump barrel 15 cavity increases, and pressure reduces, and swimming valve 14 is opened under the pressure of crude oil submergence degree, and crude oil enters in pump barrel 15 cavity B liters. During the upward stroke, the hydraulic pump 3 stops, the one-way check valve 4 is closed, and the oil outlet valve 2 is opened. The spring 9 resets upward under the action of its own elasticity, driving the plunger 10 to move upward, thereby driving the floating valve 14 to also move upward. At this time, the floating valve 14 is closed, and the fixed valve spool 11 is opened. The floating valve 14 pushes the B liter of crude oil flowing into the pump barrel 15 to enter the cavity of the oil pipe 7 through the fixed valve cover 12, and resets as the plunger 10 rises. A+B liters of crude oil in the cavity of the oil pipe 7 flows into the oil tank 1 from the oil outlet valve 2, and the amount of crude oil in the oil tank 1 increases by B liters of crude oil compared with the initial stage. In this way, the up and down strokes operate alternately, and the crude oil is continuously lifted to the ground.

As an improvement, the spring is set on the plunger between the fixed valve cover and the floating valve, the upper end of the spring is fixed on the lower end of the fixed valve cover, and the lower end of the spring is fixed on the upper end of the floating valve or the lower end of the plunger. When working, in the downstroke, the spring stretches first, and in the upstroke, the spring retracts under its own action, so that the crude oil can be lifted.

Claims (7)

1. the hydraulic oil producing device that oil extraction is used, including oil tank（1）, plunger（10）, pump barrel（15）, travelling valve（14）And oil Pipe（7）, oil tank（1）Set on the ground, it is characterised in that：Oil pipe（7）Upper outlet pass through two communicating pipes and oil tank（1）'s Intracavity inter-connection a, wherein communicating pipe being provided with delivery valve（2）, another communicating pipe it is provided with one way stop peturn valve（4）And liquid Press pump（3）, one way stop peturn valve（4）Positioned at hydraulic pump（3）With oil pipe（7）Between, in oil pipe（7）Lower end is fixed with standing valve valve Cover（12）, standing valve valve bonnet（12）Bottom be fixed with pump barrel（15）, pump barrel（15）It is interior to be provided with travelling valve（14）, travelling valve （14）With pump barrel（15）Between for dynamic sealing coordinate, travelling valve（14）Oil inlet be located at travelling valve（14）The pump barrel of lower section（15） Intracavitary, travelling valve（14）Oil-out be located at travelling valve（14）The pump barrel of top（15）Intracavitary, travelling valve（14）Upper end and post Plug（10）Lower end be connected, standing valve valve bonnet（12）Intracavitary is provided with fixed valve core（11）, standing valve valve bonnet（12）Go out Hydraulic fluid port is located at oil pipe（7）Intracavitary, fixed valve core（11）It is setting in standing valve valve bonnet（12）On the oil inlet of bottom, standing valve valve Core（11）Central through hole be arranged and be fixed on sealing sliding sleeve（13）On, plunger（10）Upper end be upward through sealing sliding sleeve（13）With Standing valve valve bonnet（12）With baffle plate after the through hole of upper end（16）It is fixedly connected, plunger（10）Provided with driving plunger（10）Transport up and down Dynamic spring（9）, seal sliding sleeve（13）With plunger（10）Between for dynamic sealing coordinate.

2. the hydraulic oil producing device that oil extraction according to claim 1 is used, it is characterised in that：Described spring（9） It is set in standing valve valve bonnet（12）With baffle plate（16）Between plunger（10）On.

3. the hydraulic oil producing device that oil extraction according to claim 1 or 2 is used, it is characterised in that：Described fixation Valve valve bonnet（12）Upper end be fixed with righting pipe（8）, spring（9）And baffle plate（16）It is arranged on righting pipe（8）It is interior.

4. the hydraulic oil producing device that oil extraction according to claim 1 is used, it is characterised in that：Described standing valve valve Cover（12）It is fixedly installed on oil pipe（7）In intracavitary lower port.

5. the hydraulic oil producing device that oil extraction according to claim 1 is used, it is characterised in that：Described sealing sliding sleeve （13）With fixed valve core（11）It is made as an entirety.

6. the hydraulic oil producing device that oil extraction according to claim 1 is used, it is characterised in that：Described delivery valve （2）Using magnetic valve；Described oil tank（1）It is provided with fuel outlet.

7. the hydraulic oil producing device that oil extraction according to claim 1 is used, it is characterised in that：Described spring is arranged On plunger between standing valve valve bonnet and travelling valve, the upper end of spring is fixed on standing valve valve bonnet lower end, and the lower end of spring is consolidated It is scheduled on travelling valve upper end or the lower end of plunger.