CN108798673A - A kind of the high-voltage pulse fluid output device and its operating method of hydro powered - Google Patents
A kind of the high-voltage pulse fluid output device and its operating method of hydro powered Download PDFInfo
- Publication number
- CN108798673A CN108798673A CN201810857872.8A CN201810857872A CN108798673A CN 108798673 A CN108798673 A CN 108798673A CN 201810857872 A CN201810857872 A CN 201810857872A CN 108798673 A CN108798673 A CN 108798673A
- Authority
- CN
- China
- Prior art keywords
- pressure
- fluid
- water
- servo
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 87
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000011017 operating method Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 114
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 238000005086 pumping Methods 0.000 claims abstract description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 129
- 239000000243 solution Substances 0.000 claims description 22
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 4
- 241000628997 Flos Species 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 210000003462 vein Anatomy 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- JBJWASZNUJCEKT-UHFFFAOYSA-M sodium;hydroxide;hydrate Chemical compound O.[OH-].[Na+] JBJWASZNUJCEKT-UHFFFAOYSA-M 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000005213 imbibition Methods 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C45/00—Methods of hydraulic mining; Hydraulic monitors
- E21C45/02—Means for generating pulsating fluid jets
- E21C45/04—Means for generating pulsating fluid jets by use of highly pressurised liquid
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of high-voltage pulse fluid output devices of hydro powered, including pumping source device, pressure break liquid supply unit, it is arranged in parallel and the identical two groups of fluid pulse generating means of structure and servo-control system, pumping source device presses big flow hydraulics for storing water and providing pressure for water, to simulate in deep；Pressure break liquid supply unit is for providing continuous low pressure fracturing fluid；Fluid pulse generating means is power source using the middle pressure big flow water of pumping source device output, and continuous low pressure fracturing fluid is changed into the output of high-voltage pulse fluid；Servo-control system is electrically connected with two fluid pulse generating means, is worked alternatively with two fluid pulse generating means of control.Impulse generator of the present invention is provided with two group pulse boosters and carries out the alternately output of high-voltage pulse fluid, disclosure satisfy that the low-and high-frequency pulsed flow output demand in wide range；Pulse output process carries out SERVO CONTROL by servo controller, it is ensured that pulsed flow exports the frequency accuracy of process.
Description
Technical field
The invention belongs to deeps mines exploitation and hydraulic fracture technical field more particularly to a kind of high-tension pulses of hydro powered
Rush fluid output device and its operating method.
Background technology
With the increase of Mineral Resources in China demand and the continuous consumption of superficial part resource, the following mineral resources and the energy are opened
Adopting constantly to march to deep.And with the increase of resource and energy extraction scale and depth, how to realize having for hard ore-rock
Fracturing is imitated, the production efficiency of resource is improved；How to change deep damaging conditions is advantageous resource, realizes that the lasting exploit of resource is
Current limitation resource, energy development technical barrier.The effective means that hydraulic fracture technology is permeated as rock mass pressure break, increase,
It plays an important role in fields such as deep mining auxiliary rock, Deep Oil-gas volume increase.But conventional hydraulic fracturing technology is using company
Afterflow fluid injection form, while acquirement rock effective fracturing, it is big that there are liquid filling pressures, to the requirement of pump outlet pressure equipment and technology
Height, fracture network form the problems such as limited.
Pulsed water pressure break be by pulser by continuous fluid be changed into pulsed flow carry out rock fracturing one kind it is excellent
Change fracturing technique, more conventional hydraulic fracture technology obtains more preferable effect, Neng Gouyou in experiment indoors in recent years and field application
Effect reduces initial cracking pressure and extends crack extension length.But still there are performance deficiencies for existing pulsed water fracturing device：Such as
Pulses switch device performance is single, forms pulsed flow using simple exciting chamber flow-disturbing, fluid pulse pressure wave amplitude is small, pulse
Fluid is unstable；Pulsed flow, pulse frequency are formed by periodically-varied fluid boundary using rotary-type impulse generator
Uncontrollable, only non-submersion jet stream is broken preferable along effect；Pulsed flow output is directly carried out using pulse pump, pulse frequency is controllable
But frequency control range is small, and impulse waveform is single, and flow output is unstable.
Therefore, deep waterpower resourses and fracturing efficiency is improved to rationally utilize, it would be highly desirable to which research and development frequency control range is big, frequency tune
The high-voltage pulse hydraulic techniques that section precision is high, pulse and flow waveform are controllable, optimization water potential energy utilizes.
Invention content
The application aims to solve at least one of the technical problems existing in the prior art.For this purpose, an object of the present invention
It is to provide that a kind of frequency control range is big, and pulse and flow waveform are controllable, water is pressed to make the hydro powered of driving source in utilization
High-voltage pulse fluid output device and its operating method.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of high-voltage pulse fluid output device of hydro powered, including：
Pumping source device presses big flow hydraulics for storing water and providing pressure for water to simulate in deep；
Pressure break liquid supply unit, for providing continuous low pressure fracturing fluid；
It is arranged in parallel and the identical two groups of fluid pulse generating means of structure, utilizes the middle pressure big flow of pumping source device output
Water is power source, and continuous low pressure fracturing fluid is changed into the output of high-voltage pulse fluid；
Servo-control system is electrically connected with described two fluid pulse generating means, to control described two fluid veins
Rush generating means alternation.
Further, the fluid pulse generating means includes impulse booster, and the impulse booster includes piston rod
The double acting fast driving cylinder being mutually butted and single-acting pulse export cylinder；
It further include the SERVO CONTROL for pressing great deal running water to move direction in control and being electrically connected with servo-control system
The output end of valve, the pumping source device is connected to the inlet of the pilot valve, is additionally provided on the pilot valve point
The first working hole and the second working hole not being connected to the first working chamber of the double acting fast driving cylinder and the second working chamber,
The pilot valve alternately controls the inlet of the pilot valve and the first work of the double acting fast driving cylinder
Chamber and the connection of the second working chamber, the single-acting pulse output cylinder is equipped with unidirectional inlet and unidirectional liquid outlet, described unidirectional
Inlet is connected to the continuous pressure break liquid supply unit, and the unidirectional liquid outlet is carried out defeated by pulsed flow output pipe
Go out, the area of the double acting fast driving the cylinder piston chamber is more than the area of single-acting pulse output the cylinder piston chamber.
Further, the pumping source device includes water tank, and the water outlet of the water tank is penetrated through successively by pipeline to be connected with
Be discharged throttle valve, middle water pump and overflow valve, the outlet end of the overflow valve by the first three-way connection separate return water branch and
It is discharged branch, the return water branch is connected to the water return outlet on water tank, the feed liquor of the water outlet branch and the pilot valve
Mouth connection.
Further, the return water branch road is equipped with servo-electric and executes valve, and the water outlet branch road is equipped with throttling successively
Valve, flowmeter and middle pressure pressure meter, the signal input part of the servo-control system electrically connect with middle pressure pressure meter and flowmeter
It connects；The signal output end of the servo-control system executes valve with servo-electric and is electrically connected.
Further, the pulsed flow output pipe includes that two pulsed flows that are docked with the two unidirectional liquid outlets are defeated
Go out branched pipe, the two pulsed flow delivery pipe branch, which summarize by going out liquid, to be exported after threeway is converged and summarize threeway about liquid is gone out
Central symmetry is distributed, and is equipped with high-pressure gauge, micro flowmeter and check valve on the pulsed flow delivery pipe branch successively.
Further, the continuous pressure break liquid supply unit includes NaOH solution tank NaOH, and the liquid outlet and feed liquor of the NaOH solution tank NaOH are total
Pipe docks, and the feed liquor house steward separates two feed liquor branches by the second three-way connection, and two feed liquor branches are respectively with two
The unidirectional inlet connection.
Further, the continuous liquid feeding mechanism further includes for the supercharging gas to the liquid supercharging in NaOH solution tank NaOH
Pump, the NaOH solution tank NaOH are equipped with liquid level gauge and blowdown valve, and the feed liquor house steward is equipped with feed liquor throttle valve, the SERVO CONTROL system
System includes the servo controller communicated to connect with pumping source device, the pulse output servo controller with pilot valve communication connection
And the industrial personal computer being electrically connected with the servo controller and pulse output servo controller.
Further, between the overflow valve and the first three-way connection be equipped with accumulator, medium pressure pressure gauge with it is described
Two level accumulator is equipped between pilot valve, the return water branch road is additionally provided with circuit pressure meter and filter.
Further, two pilot valves are integrated on hydraulic manifold block side by side, the inlet of two pilot valves
It is connected to water outlet branch through hydraulic manifold block, the floss hole of two pilot valves is connected to via the overflow valve on hydraulic manifold block
Return water branch.
Using the operating method of the high-voltage pulse fluid output device of above-mentioned hydro powered, include the following steps：
The first step：Water outlet throttle valve and feed liquor throttle valve are closed, by the pressure break of clean water and apparent viscosity 0-200mPas
Liquid is injected separately into water tank and NaOH solution tank NaOH, when liquid level reaches setting value in water tank and NaOH solution tank NaOH, stops water filling and fluid injection, and
Close water inlet and liquid injection port；
Second step：Water outlet throttle valve is opened, industrial personal computer, servo controller, middle pressure pressure meter, flowmeter and circuit pressure are opened
Power meter, modulation servo-electric executes valve and throttle valve is full-gear；
Third walks：Water pump sets servo controller control pressure or flow to rated power by industrial personal computer in startup
After preset value, servo controller controls servo-electric and executes valve to specified aperture, until water outlet branch pressure or flow are surely to pre-
If value；
4th step：Supercharging air pump is opened, toward NaOH solution tank NaOH injecting compressed air to nominal low-voltage, opens feed liquor throttling later
Valve makes continuous fluid intake line maintain steady pressure；
5th step：Starting impulse exports servo controller, and gives high-pressure gauge, micro flowmeter and two groups of SERVO CONTROLs
Valve is powered；Servo controller is adjusted to preset pressure pulse or flow pulse by industrial personal computer, carries out signal output；Two groups of servos
Control valve servo starts, and impulse booster work, pulsed flow output pipe exports high-voltage pulse fluid.
Compared with prior art, the beneficial effects of the present invention are：
1. frequency control range is big, frequency degree of regulation is high；Impulse generator is provided with two group pulse boosters and carries out high-tension pulse
Swash of wave body alternately exports, and disclosure satisfy that the low-and high-frequency pulsed flow output demand in wide range；The pulse of device exports process
SERVO CONTROL is carried out by servo controller, it is ensured that pulsed flow exports the frequency accuracy of process.
2. pulse and flow waveform are controllable；Substitution conventional fluid pulse generating unit directly converts pulse by continuous flow
Output form is flowed, it is dynamic to export cylinder pulsing imbibition-drain using servo controller control fast driving cylinder and then control pulse
Make, can accomplish using preset pressure and flow waveform signal as target, the feedback letter based on high-pressure gauge and micro flowmeter
Number precision servo control is carried out to pulse output action, and can realize the controllable output of multiple waveforms.
3. pressure water makees driving source in utilizing, water potential energy utilization ways are widened；It utilizes in pumping source unit simulation indoors and presses water
Driving energy is done, middle pressure big flow hydraulic action is changed by high-voltage pulse waterpower effect by impulse generator, realizes energy
It is reasonable conversion and utilization；And it is matched by the indoor acquisition impulse generator difference high voltage pulse output effect of test repeatedly institute
Pumping source hydraulic pressure and flow parameter instruct mine field practice, and then directly fluid will be pressed to replace pumping source device as dynamic in underground
Power source carries out high-voltage pulse output, can further widen the utilization ways of deep water potential energy.
Description of the drawings
Fig. 1 is the front view of the present invention；
Fig. 2 is continuous fluid intake line vertical view of the present invention；
Fig. 3 is pulsed flow output pipe axonometric drawing of the present invention；
Fig. 4 is impulse generator axonometric drawing in the present invention；
Fig. 5 is impulse generator sectional view in the present invention；
Fig. 6 is the front view of pilot valve in the present invention；
Fig. 7 is the left view of pilot valve in the present invention；
Fig. 8 is the right view of pilot valve in the present invention；
Fig. 9 is that pulse exports servo controller control signal schematic representation one in the present invention；
Figure 10 is that pulse exports servo controller control signal schematic representation two in the present invention；
Figure 11 is that pulse exports servo controller control signal schematic representation three in the present invention.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Referring to Fig. 1-Figure 11, a kind of high-voltage pulse fluid output device of hydro powered, including pumping source device, fracturing fluid supply
Device is answered, is arranged in parallel and the identical two groups of fluid pulse generating means of structure and servo-control system, pumping source device are used to store up
Water simultaneously provides pressure for water, and big flow hydraulics are pressed in deep to simulate；Pressure break liquid supply unit is continuous low for providing
Press fracturing fluid；Fluid pulse generating means is power source using the middle pressure big flow water of pumping source device output, by continuous low pressure pressure
It splits liquid and is changed into the output of high-voltage pulse fluid；Servo-control system is electrically connected with two fluid pulse generating means, with control
Two fluid pulse generating means work alternatively.Pumping source device, pressure break liquid supply unit and fluid pulse generating means are integrated in
On workbench.
Referring to Fig. 1, pumping source device is by water tank 1, water outlet throttle valve 2, middle water pump 3, overflow valve 4, accumulator 5 and the one or three
Pass joint 6 forms；Water tank includes water tank 7, water inlet 8, water return outlet 9, water outlet 10 and water-level gauge 11, and water tank volume is 2-
4m3；The water outlet 10 of water tank 1 passes through with water outlet throttle valve 2, middle water pump 3, overflow valve 4, accumulator 5 and the first three-way connection 6
Rigid high-voltage tube is sequentially connected with.
Referring to Fig. 1, pumping source device further includes water outlet branch, return water branch；It is discharged branch road and is equipped with throttle valve 12, stream successively
Gauge 13, middle pressure pressure meter 14 and two level accumulator 15；It is discharged 12 upstream end of throttle valve and the one of the first three-way connection 6 of branch
A branch's connection forms complete middle pressure fluid outlet path；Return water branch road is equipped with servo-electric and executes valve 16, circuit pressure successively
Power meter 17 and filter 18, return water branch servo-electric execute 16 upstream end of valve and 18 downstream of filter respectively with the first threeway
The water return outlet 9 of 6 another branch of connector and water tank 1 connects, and forms the return flow path of closure.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, pressure break liquid supply unit includes container cell, continuous fluid intake line；Container cell
Including NaOH solution tank NaOH 21, supercharging air pump 22, liquid injection port 23, liquid level gauge 24, liquid outlet 25 and blowdown valve 26,21 volume of NaOH solution tank NaOH is
0.5-1m3, supercharging air pump 22 is for giving the fracturing liquid with certain viscosity in NaOH solution tank NaOH 21 to provide certain output pressure；Continuously
Fluid input lines include feed liquor throttle valve 27, feed liquor house steward 28, the second three-way connection 29 and two feed liquor branched pipes 30；Feed liquor
Throttle valve 27 is connect with container cell liquid outlet 25, and liquid is through feed liquor throttle valve 27 connected in sequence, feed liquor house steward 28 and feed liquor
Two three-way connections 29 branch to two feed liquor branched pipes 30；Two 30 equal lengths of feed liquor branched pipe, about the second threeway of feed liquor
Connector 29 is centrosymmetric distribution, for that continuously will have press liquid to input to fluid pulse generating means.
Referring to Fig. 4 and Fig. 5, impulse booster 39 is fast including the double acting that piston rod is mutually butted by positive coupling 42
Fast driving cylinder 41 and single-acting pulse export cylinder 43；Entire impulse booster 39 is connected to workbench by the support of supporting rack 40
On.Further include the pilot valve 68 for pressing great deal running water to move direction in control and being electrically connected with servo-control system,
The output end of pumping source device is connected to the inlet of pilot valve 68, and the first working hole and are additionally provided on pilot valve 68
Two working holes, the first working chamber and the second working chamber of double acting fast driving cylinder respectively with the first working hole and the second working hole
Connection, pilot valve 68 alternately control the first working chamber of the inlet and double acting fast driving cylinder 41 of pilot valve 68
Be connected to the second working chamber, single-acting pulse export cylinder 43 be equipped with unidirectional inlet and unidirectional liquid outlet, unidirectional inlet with
Pulsed flow output pipe is connected to, and unidirectional liquid outlet is exported by pulsed flow output pipe, double acting fast driving cylinder
The area of plunger shaft is more than the area of single-acting pulse output the cylinder piston chamber.Two group pulse boosters 39 are mounted side by side in branch
It supports and carries out alternate high-pressure pulsed flow output on pedestal 38, support base 38 is made of T-slot steel plate.
Servo-control system includes the servo controller 19 communicated to connect with pumping source device, is communicated to connect with pilot valve
Pulse output servo controller 66 and industrial personal computer 20；The signal input part of servo controller 19 and middle pressure pressure meter 14, flow
Meter 13 is connected by signal wire；The signal output end of servo controller 19 executes valve 16 with servo-electric and is connect by signal wire；
The communication terminal of servo controller 19 is connect with industrial personal computer 20 by signal wire；Servo controller 19 is by driving servo-electric to execute
16 action control return water bypass flow of valve, to realize water outlet branch pressure and flow control.
Pulsed flow output pipe is by the first pulsed flow delivery pipe branch 31,32 and of the second pulsed flow delivery pipe branch
Go out liquid and summarizes the composition of threeway 33；First pulsed flow delivery pipe branch 31 and the second pulsed flow delivery pipe branch 32 are all by going out liquid
Isocon 34, high-pressure gauge 35, micro flowmeter 36 and check valve 37 are sequentially connected with composition, and summarize threeway 33 about liquid is gone out
Central symmetry is distributed；37 downstream of check valve of two pulsed flow delivery pipe branch is connected to out liquid and summarizes threeway 33, stream of pulses
Body summarizes threeway 33 through going out liquid and converges output.
Referring to Fig. 4 and Fig. 5, fast driving cylinder 41 by pedestal 44, drive shaft 45, driving piston 46, cylinder sleeve 47, head cover 48,
Fastening bolt 49, static sealing circle 50 and dynamic seal 51 form；It is pressed into the mouth of a river in being respectively set in pedestal 44 and head cover 48
54 and middle pressure withdrawal nozzle 55；In be pressed into the mouth of a river 54 and middle pressure withdrawal nozzle 55 respectively with the first working hole of pilot valve 68 and
Two working holes are connected to.Cylinder sleeve 47 is fixed on by fastening bolt 49 between pedestal 44 and head cover 48, and intersection is provided with static state
Sealing ring 50；The concentric setting in cylinder sleeve 47 of drive shaft 45, diameter are less than 47 internal diameter of cylinder sleeve, the connection driving of 45 bottom end of drive shaft
Piston 46,45 top of drive shaft pass through 48 center of head cover；Driving piston 46 is close to 47 inner wall of cylinder sleeve, in driving piston 46 and pedestal
It is provided between 44 and promotes chamber (the first working chamber) 52, recession chamber (the second work is provided between driving piston 46 and head cover 48
Make chamber) 53；Driving 46 outer shroud of piston and 48 inner ring of head cover are both provided with dynamic seal 51.
Referring to Fig. 4 and Fig. 5, pulse exports cylinder 43 by cylinder body 56, sealing device 57, cylinder cap 58, reciprocating-piston 59, imbibition list
It is formed to valve 60 and drain check valve 61；Cylinder body 56 is provided centrally with cylinder barrel 62, and bottom end is provided with liquid sucting port 63 and leakage fluid dram 64,
Top connects sealing device 57, and logical cylinder cap 58 carries out fit sealing；Reciprocating-piston 59 passes through cylinder cap 58 and sealing device 57 to set
It is placed in cylinder barrel 62；The anti-suspension counterforce device of setting, is separately connected cylinder body 56 in imbibition check valve 60 and drain check valve 61
Liquid sucting port 63 and leakage fluid dram 64 form unidirectional inlet and unidirectional liquid outlet, and are distributed along 56 central symmetry of cylinder body；Drive shaft 45
It is connected by positive coupling 42 with reciprocating-piston 59, the area of driving piston 46 is 2-4 times of 59 area of reciprocating-piston, is passed through
It drives piston 46 to push reciprocating-piston movement 59, is exported using flow driving small flow high pressure liquid stream is pressed in big flow.
Referring to Fig. 1 and Fig. 6, two groups of pilot valves 68 are integrated in formation control valve group 65 on hydraulic manifold block 70 side by side；
Pilot valve 68 is a two-position four-way servo valve, and the inlet 71 of two groups of two-position four-way servo valves is connected through hydraulic manifold block 70
It is discharged 15 downstream of two level accumulator of branch, the liquid return hole 72 (floss hole) of two groups of two-position four-way servo valves is via Hydraulic integration
Overflow valve 69 on block 70 is connected between the circuit pressure meter 17 and filter 18 of the return water branch；Pilot valve 68 with
It is connected to by middle pressure water management pipeline 67 between impulse booster, pressure water management pipeline 67 includes that liquid pipe 73, the are pressed into first
It pushes back to be pressed into liquid pipe 75 and second in flow tube 74, second in one and pushes back flow tube 76, four length of pipe and caliber are equal；First
In be pressed into and be pressed into the both ends of liquid pipe 75 in liquid pipe 73 and second and be separately connected propulsion mouth (the first works of two groups of two-position four-way servo valves
Make mouth) 77 and two groups of fast driving cylinders 41 in be pressed into the mouth of a river 54, pushed back in first and push back flow tube 76 in flow tube 74 and second and divide
Other both ends connect two groups of two-position four-way servo valve back pressure mouths (the second working hole) 78 and the middle pressure of two groups of fast driving cylinders 41 is moved back
The mouth of a river 55；Pulse exports 66 feedback signal input terminal of servo controller and passes through signal with high-pressure gauge 35 and micro flowmeter 36
Line connects, and pulse output 66 control signal output of servo controller is connected with two groups of two-position four-way servo valves 68 by signal wire
It connects, the communication signal end of pulse output servo controller 66 is connect with industrial personal computer 20 by signal wire.
Referring to Fig. 1, Fig. 3, Fig. 6-Fig. 8, pulse exports that servo controller 66 can output waveform be consistent, phase difference half week
The two group pulse signals (as shown in Fig. 7, Fig. 8 and Fig. 9) of phase, the signal according to high-pressure gauge 35 and micro flowmeter 36 are anti-
Feedback controls two groups of two-position four-way servo valves 68 quickly alternately on-off action, and then two groups of alternatings of fast driving cylinders 41 of control respectively
It promotes, driving pulse output cylinder 43 makees accurate pressure pulse or flow pulse output, pulses range 10-2Hz-102Hz tetra-
A magnitude；Pulse output servo controller 66 has pressure and flow pulse waveform signal encoding function, and then it is defeated to control pulse
Go out cylinder 43 to make to export pressure pulse or flow pulse (such as Fig. 9, the figure of corresponding sine, square wave, triangular wave or other special-shaped waveforms
Shown in 10 and Figure 11)；
It is using operating method of the invention：
The first step：Water outlet throttle valve 2 and feed liquor throttle valve 27 is closed, by clean water and apparent viscosity 0-200mPas
Fracturing fluid is injected separately into water tank 7 and NaOH solution tank NaOH 21, waits for that liquid level respectively reaches water-level gauge and liquid level in water tank 7 and NaOH solution tank NaOH 21
3/4ths ranges are counted, stop water filling and fluid injection, and close water inlet 8 and liquid injection port 23；
Second step：Water outlet throttle valve 2 is opened, industrial personal computer 20, servo controller 19, middle pressure pressure meter 14, flowmeter are opened
13 and circuit pressure meter 17, modulation servo-electric executes valve 16 and throttle valve 12 is full-gear；
Third walks：Water pump 3 is to rated power in startup, and after startup, the water in water tank 7 is passed through by being discharged throttle valve 2
Middle water pump 3 is inhaled by rigid high-voltage tube and is exported, most of servo-electric for exporting fluid Jing Guo full-gear executes valve
16 high speeds flow into return water branch to water tank 7, and minority of fluid enters water outlet branch；At this point, return water bypass flow is maximum, reach
100L/min, and it is minimum to be discharged branch pressure；Then, 19 control pressure (0- of servo controller is set by industrial personal computer 20
16MPa) or flow is after preset value, servo controller 19 controls servo-electric and executes valve 16 to specified aperture, at this point, return water branch
Road flow is gradually reduced, and water outlet branch pressure gradually increases, until water outlet branch pressure or flow surely arrive preset value；
4th step：Supercharging air pump 22 is opened, toward 21 injecting compressed air of NaOH solution tank NaOH to nominal low-voltage, pressure is big at 2-5
Atmospheric pressure；Then, feed liquor throttle valve 27 is opened, fluid exports under pressure action in NaOH solution tank NaOH 21, makes continuous fluid input pipe
Road maintains steady pressure；
5th step：Starting impulse exports servo controller 66, and to high-pressure gauge 35, micro flowmeter 36 and two group two
Position four-way servo valve 68 is powered；Pulse, which is adjusted, by industrial personal computer 20 exports servo controller 66 to preset pressure pulse or flow arteries and veins
Punching carries out signal output；Two groups of 68 servos of two-position four-way servo valve start, and one of which two-position four-way watches inlet 71 through two
Four-way is watched back pressure mouth 78 and is connected to flow tube 74 is pushed back in first, and pressure withdrawal nozzle 55 enters respective pulses booster in propelling pressure warp
The recession chamber 55 of fast driving cylinder 41, while two-position four-way valve liquid return hole 72 is watched through two-position four-way and mouth 77 is promoted to be pressed into first
Liquid pipe 73 is connected to, and fast driving cylinder 41 promotes fluid in chamber 54, is pushed driving piston 46 to move backward under differential pressure action, is driven
Axis 45 pull pulse output cylinder 43 in reciprocating-piston 59 drop back, cause continuous fluid input tube fluid from imbibition check valve 60 into
Enter cylinder barrel 62；Next, this group of two-position four-way watch inlet 71 through two-position four-way watch promote mouth 77 and first in be pressed into liquid pipe 73
Connection, propelling pressure enter the propulsion chamber 54 of respective pulses booster fast driving cylinder 41, while two-position four-way valve liquid return hole 72
Back pressure mouth 78 is watched through two-position four-way to connect with flow tube 74 is pushed back in first, fluid in the recession chamber 55 of fast driving cylinder 41, in pressure difference
Effect is lower to push driving piston 46 to travel forward, and 45 driving pulse of drive shaft exports reciprocating-piston 59 in cylinder 43 and advances, cylinder barrel 62
Interior fluid exports single high-voltage pulse fluid by drain check valve 61 into the first pulsed flow delivery pipe branch 31；Another group
The control of 68 counteragent of two-position four-way servo valve corresponds to set of pulses booster 39 and exports another high-voltage pulse fluid, so far complete
It exports at high-voltage pulse fluid twice, and constantly recycles；Impulse booster 39 drives small flow high using pressure flow in big flow
Hydraulic fluid stream exports, and pressure alteration form is shown below, 39 intensification factor of impulse booster be driving 46 area of piston with it is past
Bring back to life the ratio of 59 areas of plug.
Wherein：ppFor 39 pulsed flow output pressure (MPa) of impulse booster, pQFor hydraulic fluid pressure in output water route
(MPa), rQFor driving 46 radius of piston (mm), rpFor 59 radius of reciprocating-piston (mm), SQTo drive 46 area (mm of piston2),rp
For 59 area of reciprocating-piston (mm).
6th step：Fluid end of output is first closed fluid pulse generating means and pulse output control system, is then modulated
Servo-electric executes the standard-sized sheet again of valve 16, closes pumping source device, finally opens blowdown valve 26 and empties NaOH solution tank NaOH 21.
Above-described embodiment is only to clearly demonstrate examples made by the present invention, rather than the restriction to embodiment.For
For those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.Here without can not be also exhaustive to all embodiments.And the obvious variation or change thus amplified out
It is dynamic to be still in the protection scope of this invention.
Claims (10)
1. a kind of high-voltage pulse fluid output device of hydro powered, which is characterized in that including：
Pumping source device presses big flow hydraulics for storing water and providing pressure for water to simulate in deep；
Pressure break liquid supply unit, for providing continuous low pressure fracturing fluid；
It is arranged in parallel and the identical two groups of fluid pulse generating means of structure, the middle pressure big flow water exported using pumping source device is
Continuous low pressure fracturing fluid is changed into the output of high-voltage pulse fluid by power source；
Servo-control system is electrically connected with described two fluid pulse generating means, is sent out with controlling described two fluid pulses
Generating apparatus works alternatively.
2. the high-voltage pulse fluid output device of hydro powered according to claim 1, it is characterised in that：The fluid vein
It includes impulse booster to rush generating means, the impulse booster include the double acting fast driving cylinder that is mutually butted of piston rod and
Single-acting pulse exports cylinder；
Further include the pilot valve for pressing great deal running water to move direction in control and being electrically connected with servo-control system, institute
The output end for stating pumping source device is connected to the inlet of the pilot valve, be respectively equipped on the pilot valve with it is described
The first working hole and the second working hole of first working chamber of double acting fast driving cylinder and the connection of the second working chamber, the servo
Control valve alternately controls the first working chamber and second of the inlet and the double acting fast driving cylinder of the pilot valve
Working chamber is connected to, and single-acting pulse output cylinder is equipped with unidirectional inlet and unidirectional liquid outlet, the unidirectional inlet with
The continuous pressure break liquid supply unit connection, the unidirectional liquid outlet is exported by pulsed flow output pipe, described double
The area for acting on fast driving the cylinder piston chamber is more than the area of single-acting pulse output the cylinder piston chamber.
3. the high-voltage pulse fluid output device of hydro powered according to claim 2, it is characterised in that：The pumping source dress
It sets including water tank, the water outlet of the water tank is penetrated through successively by pipeline is connected with water outlet throttle valve, middle water pump and overflow valve,
The outlet end of the overflow valve separates return water branch by the first three-way connection and is discharged branch, on the return water branch and water tank
Water return outlet connection, the water outlet branch is connected to the inlet of the pilot valve.
4. the high-voltage pulse fluid output device of hydro powered according to claim 3, it is characterised in that：The return water branch
Road is equipped with servo-electric and executes valve, and the water outlet branch road is equipped with throttle valve, flowmeter and middle pressure pressure meter successively, described to watch
The signal input part and middle pressure pressure meter and flowmeter for taking control system are electrically connected；The signal of the servo-control system exports
End executes valve with servo-electric and is electrically connected.
5. the high-voltage pulse fluid output device of hydro powered according to claim 4, it is characterised in that：The stream of pulses
Body output pipe includes the two pulsed flow delivery pipe branch docked with the two unidirectional liquid outlets, the two pulsed flow outputs
Branched pipe exports after summarizing threeway confluence by going out liquid and summarizes the distribution of threeway central symmetry about liquid is gone out, and the pulsed flow is defeated
Go out and is equipped with high-pressure gauge, micro flowmeter and check valve on branched pipe successively.
6. the high-voltage pulse fluid output device of hydro powered according to claim 5, it is characterised in that：The continuous pressure
It includes NaOH solution tank NaOH to split liquid supply unit, and the liquid outlet of the NaOH solution tank NaOH is docked with feed liquor house steward, and the feed liquor house steward passes through second
Three-way connection separates two feed liquor branches, and two feed liquor branches are connected to the two unidirectional inlets respectively.
7. the high-voltage pulse fluid output device of hydro powered according to claim 6, it is characterised in that：The continuous liquid
Body feeding mechanism further includes for the supercharging air pump to the liquid supercharging in NaOH solution tank NaOH, and the NaOH solution tank NaOH is equipped with liquid level gauge and row
Dirty valve, the feed liquor house steward are equipped with feed liquor throttle valve, and the servo-control system includes being watched with what pumping source device communicated to connect
It takes controller, exported with the pulse output servo controller of pilot valve communication connection and with the servo controller and pulse
The industrial personal computer that servo controller is electrically connected.
8. wanting the high-voltage pulse fluid output device of the hydro powered described in 7 according to right, it is characterised in that：The overflow valve and
It is equipped with accumulator between first three-way connection, two level accumulator is equipped between medium pressure pressure gauge and the pilot valve,
The return water branch road is additionally provided with circuit pressure meter and filter.
9. the high-voltage pulse fluid output device of hydro powered according to claim 8, it is characterised in that：Two servos
Control valve is integrated on hydraulic manifold block side by side, and the inlet of two pilot valves is connected to water outlet branch through hydraulic manifold block,
The floss hole of two pilot valves is connected to return water branch via the overflow valve on hydraulic manifold block.
10. the operating method of the high-voltage pulse fluid output device using claim 7-9 any one of them hydro powereds,
It is characterized in that, includes the following steps：
The first step：Water outlet throttle valve and feed liquor throttle valve are closed, by the fracturing fluid of clean water and apparent viscosity 0-200mPas point
Not Zhu Ru water tank and NaOH solution tank NaOH stop water filling and fluid injection, and close when liquid level reaches setting value in water tank and NaOH solution tank NaOH
Water inlet and liquid injection port；
Second step：Water outlet throttle valve is opened, industrial personal computer, servo controller, middle pressure pressure meter, flowmeter and circuit pressure are opened
Meter, modulation servo-electric executes valve and throttle valve is full-gear；
Third walks：For water pump to rated power, it is pre- to set servo controller control pressure or flow by industrial personal computer in startup
If after value, servo controller controls servo-electric and executes valve to specified aperture, until water outlet branch pressure or flow surely arrive preset value；
4th step：Supercharging air pump is opened, toward NaOH solution tank NaOH injecting compressed air to nominal low-voltage, feed liquor throttle valve is opened later, makes
Continuous fluid intake line maintains steady pressure；
5th step：Starting impulse exports servo controller, and logical to high-pressure gauge, micro flowmeter and two groups of pilot valves
Electricity；Servo controller is adjusted to preset pressure pulse or flow pulse by industrial personal computer, carries out signal output；Two groups of SERVO CONTROLs
Valve servo starts, and impulse booster work, pulsed flow output pipe exports high-voltage pulse fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857872.8A CN108798673B (en) | 2018-07-31 | 2018-07-31 | A kind of the high-voltage pulse fluid output device and its operating method of hydro powered |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857872.8A CN108798673B (en) | 2018-07-31 | 2018-07-31 | A kind of the high-voltage pulse fluid output device and its operating method of hydro powered |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798673A true CN108798673A (en) | 2018-11-13 |
| CN108798673B CN108798673B (en) | 2019-10-11 |
Family
ID=64078746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810857872.8A Active CN108798673B (en) | 2018-07-31 | 2018-07-31 | A kind of the high-voltage pulse fluid output device and its operating method of hydro powered |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108798673B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160879A (en) * | 2019-05-14 | 2019-08-23 | 中国科学院武汉岩土力学研究所 | A kind of fracturing device |
| CN111980879A (en) * | 2020-07-17 | 2020-11-24 | 中南大学 | High-pressure pulse fluid output device and rock hydraulic fracturing method |
| CN115095309A (en) * | 2022-07-26 | 2022-09-23 | 山东科技大学 | Differential pressure type piston supercharging energy storage pulse device |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090369A (en) * | 1993-02-20 | 1994-08-03 | 郭传玉 | Impulse booster |
| CN2682209Y (en) * | 2003-12-05 | 2005-03-02 | 重庆市兆巍矿山机电制造有限公司 | Pulse water flooding device |
| CN1659362A (en) * | 2002-05-30 | 2005-08-24 | 卡尔克内工程公司 | A method and device for pressure pulse generation |
| CN2736534Y (en) * | 2004-10-18 | 2005-10-26 | 重庆市兆巍矿山机电制造有限公司 | Pulse water flooding device |
| CN101476581A (en) * | 2009-01-21 | 2009-07-08 | 武汉工程大学 | Pulsating flow generator |
| CN101985875A (en) * | 2010-09-27 | 2011-03-16 | 中国石油大学(华东) | Hydraulic pulse-assisted reservoir chemical remedial treatment experiment device and method |
| CN202064957U (en) * | 2011-04-09 | 2011-12-07 | 徐州中矿永宏科技有限公司 | Portable abrasive water jet cutting machine used for coal mine |
| CN102906371A (en) * | 2010-03-25 | 2013-01-30 | 拉塞尔矿物设备私人有限公司 | Pulsed water-jet apparatus |
| CN103196762A (en) * | 2013-04-25 | 2013-07-10 | 重庆地质矿产研究院 | Experimental device and method for reforming shale gas reservoir through pulse hydraulic fracturing |
| US20140028078A1 (en) * | 2012-07-27 | 2014-01-30 | Tempress Technologies, Inc. | Hyper-Pressure Pulse Excavator |
| CN104847326A (en) * | 2015-05-30 | 2015-08-19 | 重庆地质矿产研究院 | Blocking type hydraulic pulse generation device and method |
| CN104929605A (en) * | 2015-06-26 | 2015-09-23 | 重庆地质矿产研究院 | Underground hydraulic pulse staged fracturing and permeability increasing device and method |
| CN105464638A (en) * | 2015-10-29 | 2016-04-06 | 中国石油大学(北京) | Coal bed gas well pulse radial drilling and double-pulsating hydrofracturing method |
| CN105909228A (en) * | 2016-06-29 | 2016-08-31 | 中国矿业大学(北京) | Pulse high-pressure hydraulic slotting and fracturing device and method |
| CN205561637U (en) * | 2016-04-22 | 2016-09-07 | 陈其龙 | Floor heating pipe dipulse pneumatics washs all -in -one |
| CN105952456A (en) * | 2016-05-09 | 2016-09-21 | 中国矿业大学 | Adaptive abrasive slurry jet mining system and method |
| CN107024393A (en) * | 2017-05-19 | 2017-08-08 | 中南大学 | Low permeability reservoir Frequency Adjustable pulsed water fracturing reform device |
| US9995126B1 (en) * | 2015-09-22 | 2018-06-12 | Geodrilling Technologies, Inc. | Low-frequency pulsing sonic and hydraulic mining system |
-
2018
- 2018-07-31 CN CN201810857872.8A patent/CN108798673B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090369A (en) * | 1993-02-20 | 1994-08-03 | 郭传玉 | Impulse booster |
| CN1659362A (en) * | 2002-05-30 | 2005-08-24 | 卡尔克内工程公司 | A method and device for pressure pulse generation |
| CN2682209Y (en) * | 2003-12-05 | 2005-03-02 | 重庆市兆巍矿山机电制造有限公司 | Pulse water flooding device |
| CN2736534Y (en) * | 2004-10-18 | 2005-10-26 | 重庆市兆巍矿山机电制造有限公司 | Pulse water flooding device |
| CN101476581A (en) * | 2009-01-21 | 2009-07-08 | 武汉工程大学 | Pulsating flow generator |
| CN102906371A (en) * | 2010-03-25 | 2013-01-30 | 拉塞尔矿物设备私人有限公司 | Pulsed water-jet apparatus |
| CN101985875A (en) * | 2010-09-27 | 2011-03-16 | 中国石油大学(华东) | Hydraulic pulse-assisted reservoir chemical remedial treatment experiment device and method |
| CN202064957U (en) * | 2011-04-09 | 2011-12-07 | 徐州中矿永宏科技有限公司 | Portable abrasive water jet cutting machine used for coal mine |
| US20140028078A1 (en) * | 2012-07-27 | 2014-01-30 | Tempress Technologies, Inc. | Hyper-Pressure Pulse Excavator |
| CN103196762A (en) * | 2013-04-25 | 2013-07-10 | 重庆地质矿产研究院 | Experimental device and method for reforming shale gas reservoir through pulse hydraulic fracturing |
| CN104847326A (en) * | 2015-05-30 | 2015-08-19 | 重庆地质矿产研究院 | Blocking type hydraulic pulse generation device and method |
| CN104929605A (en) * | 2015-06-26 | 2015-09-23 | 重庆地质矿产研究院 | Underground hydraulic pulse staged fracturing and permeability increasing device and method |
| US9995126B1 (en) * | 2015-09-22 | 2018-06-12 | Geodrilling Technologies, Inc. | Low-frequency pulsing sonic and hydraulic mining system |
| CN105464638A (en) * | 2015-10-29 | 2016-04-06 | 中国石油大学(北京) | Coal bed gas well pulse radial drilling and double-pulsating hydrofracturing method |
| CN205561637U (en) * | 2016-04-22 | 2016-09-07 | 陈其龙 | Floor heating pipe dipulse pneumatics washs all -in -one |
| CN105952456A (en) * | 2016-05-09 | 2016-09-21 | 中国矿业大学 | Adaptive abrasive slurry jet mining system and method |
| CN105909228A (en) * | 2016-06-29 | 2016-08-31 | 中国矿业大学(北京) | Pulse high-pressure hydraulic slotting and fracturing device and method |
| CN107024393A (en) * | 2017-05-19 | 2017-08-08 | 中南大学 | Low permeability reservoir Frequency Adjustable pulsed water fracturing reform device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160879A (en) * | 2019-05-14 | 2019-08-23 | 中国科学院武汉岩土力学研究所 | A kind of fracturing device |
| CN111980879A (en) * | 2020-07-17 | 2020-11-24 | 中南大学 | High-pressure pulse fluid output device and rock hydraulic fracturing method |
| CN115095309A (en) * | 2022-07-26 | 2022-09-23 | 山东科技大学 | Differential pressure type piston supercharging energy storage pulse device |
| CN115095309B (en) * | 2022-07-26 | 2023-07-25 | 山东科技大学 | Pressure difference type piston boosting energy storage pulse device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108798673B (en) | 2019-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108798673B (en) | A kind of the high-voltage pulse fluid output device and its operating method of hydro powered | |
| CN203130399U (en) | Shutoff and driving adjusting device using water injection pump as power | |
| CN203531876U (en) | Fracturing manifold | |
| NO20093258A1 (en) | Underwater Pump System | |
| RU136082U1 (en) | INSTALLATION OF PREPARATION AND INJECTION OF A FINE DISPERSED WATER-GAS MIXTURE (MDVHS) IN A PLAST | |
| CN201908638U (en) | High-pressure small-displacement skid-mounted dosing device | |
| CN203515536U (en) | Fluid alternate continuous pumping device for hydraulic fracturing simulation experiment | |
| CN203822277U (en) | Water injection supercharging device | |
| RU2008140641A (en) | METHOD FOR PREPARING AND PUMPING HETEROGENEOUS MIXTURES INTO THE PLAST AND INSTALLATION FOR ITS IMPLEMENTATION | |
| CN203463092U (en) | Novel manifold truck/pry with self-pressurization perfusion function for industrial large-scale fracturing | |
| CN108625784B (en) | Hydraulic pressurizing jet drilling tool | |
| CN102434535A (en) | Equivalent simulation testing system of hydraulic control system of underwater production facility | |
| CN204457649U (en) | Oil well liquid drive oil pumping system | |
| CN211549657U (en) | Rod-type gas lift oil production device and gas drive oil well pump | |
| CN202831091U (en) | Ejector device for high-rise water supply secondary pressurization | |
| CN201738937U (en) | Portable single hydraulic prop pumping station system | |
| CN104533350A (en) | Oil well liquid drive oil pumping system | |
| CN110821452B (en) | Same well extracting and injecting underground pump | |
| RU2680028C1 (en) | Compressor unit | |
| CN202531496U (en) | Throwing and fishing gas injection jet pump for gas lift | |
| CN110145284A (en) | A kind of electric water distribution device for oil-field flooding technique | |
| CN101839125A (en) | Pressurized water injection device | |
| CN109707586B (en) | Device and method for realizing auxiliary agent filling by utilizing pressure difference of oil jacket of natural gas well | |
| CN204532295U (en) | One takes over extracting device of oil of calming the anger | |
| CN209817975U (en) | Expansion pipe pressurization supercharging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |