CN107100592B - Coal bed gas multi-machine interaction hydraulic-driven mining process system - Google Patents
Coal bed gas multi-machine interaction hydraulic-driven mining process system Download PDFInfo
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- CN107100592B CN107100592B CN201710333370.0A CN201710333370A CN107100592B CN 107100592 B CN107100592 B CN 107100592B CN 201710333370 A CN201710333370 A CN 201710333370A CN 107100592 B CN107100592 B CN 107100592B
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/129—Adaptations of down-hole pump systems powered by fluid supplied from outside the borehole
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/006—Production of coal-bed methane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
- F04B47/08—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth the motors being actuated by fluid
Abstract
A kind of coal bed gas multi-machine interaction hydraulic-driven mining process system, belongs to coal-bed gas exploitation field, comprising: ground hydraulic pumping plant, power fluid transmission control system and downhole pump unit.Power fluid is transported to downhole pump unit by power fluid transmission control system by ground hydraulic pumping plant, and driving downhole pump unit works to complete the mining of well liquid, reduces bottom pressure, realize the harvesting of coal bed gas.The present invention, without bar mining system, fundamentally solves the problems, such as three pump drainage extraction system rod and tube partial-wears using hydraulic-driven, has the advantages that adjust ginseng convenient and adjusts ginseng range big；Identical platform multi-machine interaction may be implemented, and do not interfere with each other, greatly reduce mining cost；Power fluid endless form uses closed cycle, and power fluid produces liquid with coal bed gas well and do not mix, but returns to ground by respective channel, reduces the failure rate that hydraulic system is polluted by power fluid, improves system effectiveness.
Description
Technical field
The invention belongs to coal-bed gas exploitation fields, and in particular to a kind of coal bed gas multi-machine interaction hydraulic-driven mining technique system
System.
Background technique
Coal bed gas be it is a kind of preserve the Unconventional gas in coal seam by coalbed-forming and mainly with adsorbed state, mainly
Ingredient is methane.Coal bed gas extraction is also known as water pumping gas production, by artificial lift method, water is discharged out of coal bed gas well, is made
Coal seam reservoirs pressure reduction is to coal bed gas critical desorption pressures value hereinafter, to make the desorption of ADSORPTION STATE methane be a large amount of free state methane
And it migrates to well head.
For a long time, China's cbm development does not form the theoretical system of oneself, transplants the winning apparatus of conventional gas and oil,
Based on three pump drainage extraction systems (the mining system that pumping unit, sucker rod, oil well pump form).But China coal bed gas scene master
In the prevalence of investment, big, lectotype selection does not match three pump drainages extraction system to be applied, rod and tube partial-wear is serious, holddown, buries pump etc.
Problem causes the well workover period short, has seriously affected the normal mining of coal bed gas well, has directly reduced the returns of investment of coal bed gas.
In addition, often more wells combine mining, each well duty parameter difference and same coal seam gas well on the platform of China cbm development well site
Also bigger in the liquid measure variation in different mining stages, no matter which kind of mining technique requires to carry out frequently adjusting ginseng, three pump drainages
Tune ginseng is inconvenient when extraction system mining and adjusts ginseng range small.
Summary of the invention
Of the existing technology to overcome the problems, such as, the present invention provides a kind of coal bed gas multi-machine interaction hydraulic-driven mining technique
System.
To achieve the above object, The technical solution adopted by the invention is as follows:
Coal bed gas multi-machine interaction hydraulic-driven mining process system, comprising: ground hydraulic pumping plant, power fluid transmission control system
System, downhole pump unit and oil pipe.Ground hydraulic pumping plant is the power source of whole system, and power fluid is transmitted by power fluid
Control system is transported to downhole pump unit, and driving downhole pump unit works to complete the mining of well liquid, reduces shaft bottom
Pressure realizes the harvesting of coal bed gas, and downhole pump unit is integrally fastened in oil pipe, and inspection can not rise when pumping workover treatment
Downhole pump unit is played out in the case where flowline.
Ground hydraulic pumping plant, comprising: power flow container, motor, hydraulic pump, filter, check valve, first pressure gauge, elder generation
Conduction overflow valve, 2/2-way formula solenoid valve, accumulator；Wherein, hydraulic pump is the core component of ground hydraulic pumping plant, power fluid
Tank is used to store hydraulic system power fluid；Hydraulic pump is by motor drive, by the power fluid in power flow container through filter mistake
It is pumped out after filter, the power fluid in power flow container enters high voltage control manifold after hydraulic pump boosts, and is connected at hydraulic pump outlet
Check valve, the check valve influence the steady operation of hydraulic pump for hydraulic shock in anti-locking system；Pilot operated compound relief valve with
Hydraulic pump is in parallel, is used for regulating system pressure；The 2/2-way formula solenoid valve is connected with pilot operated compound relief valve, the accumulator
It is in parallel with hydraulic pump, it is used for regulating system pressure, when system pressure deficiency, make-up system, when system instantaneous pressure increases,
Portion of energy is absorbed, to guarantee that whole system pressure is normal.The first pressure gauge is in parallel with hydraulic pump, measuring instrument and control
System completes detection, monitoring parameters remote transmission and transmission fault alarm information of system operational parameters etc..
Preferably, hydraulic pump can use reciprocating pump.
Power fluid transmission control system, comprising: high voltage control manifold, shut-off valve, piloted reducer, second pressure gauge,
Speed governing valve, flowmeter, electro-hydraulic reversing valve, the time relay, counterbalance valve, power fluid pipeline, wellhead assembly；Wherein, high voltage control
Manifold is by shut-off valve, piloted reducer, second pressure gauge, speed governing valve, flowmeter, electro-hydraulic reversing valve, the time relay and back
Pressure valve integrates, and when application is mounted between power fluid distribution, and the power fluid pressure and flow of each well head are transported in control；Power
Liquid pipe line is two high-pressure hoses for being suitable for mesohigh, and one end is connected with high voltage control manifold, and the other end is filled across well head
It sets and is connected with downhole pump unit.
Downhole pump unit, comprising: power cylinder, service line one, service line two, central tube, bilateral power pipe connect
Head, cylinder bottom connector, cylinder bottom, piston, piston cylinder inner cylinder, piston rod, piston cylinder guide sleeve, pump power cylinder box cupling, valve stem piston bar
Box cupling, stem guiding set, oil well pump, supports box cupling, mechanical support under box cupling on sealing ring, pump core axis, support sealing ring at valve rod
Connector, upper lengthening pump barrel, upward-traveling valves, upward-traveling valves valve bonnet, upward-traveling valves valve ball, upward-traveling valves valve seat, upper internal screw thread plunger
Connector, internal screw thread monoblock type plunger, pump barrel, lower internal screw thread plunger connector, lower travelling valve, lower travelling valve valve bonnet, lower travelling valve valve
Ball, lower travelling valve valve seat, lower travelling valve pressure cap, lower lengthening pump barrel, fixed valve, fixed valve valve bonnet, fixed valve valve ball, fixed valve valve
Seat, fixed valve valve deck, screen casing, sand sediment pipe, silk plug.
Wherein, service line one is connect by union elbow with bilateral power pipe fitting, and the top of service line two passes through
Union elbow is connect with bilateral power pipe fitting, and the lower part of service line two is connect by union elbow with piston cylinder guide sleeve,
Central tube is connect by screw thread with bilateral power pipe fitting, and the top of cylinder bottom connector is connected by screw thread and bilateral power pipe fitting
It connects, the lower part of cylinder bottom connector is connected by the top of screw thread and cylinder bottom, and the lower part of cylinder bottom is upper by screw thread and piston cylinder inner cylinder
Portion's connection, piston are connected by the top of nut and piston rod, and the lower part of piston cylinder inner cylinder passes through screw thread and piston cylinder guide sleeve
Top connection, the lower part of piston cylinder guide sleeve connect by screw thread with the top of pump power cylinder box cupling, and the lower part of piston rod leads to
The top for crossing valve stem piston bar box cupling and valve rod connects, and the lower part of valve rod is connect by screw thread with upward-traveling valves valve bonnet, and valve rod is led
It is connect to the top of set by screw thread with the lower part of pump power cylinder box cupling, what the top of pump core axis was covered by screw thread and stem guiding
The lower part of lower part connection, pump core axis is connect by screw thread with the top of mechanical support connector, and box cupling on sealing ring is supported to pass through spiral shell
Line is connect with box cupling under support sealing ring, and the upper top for lengthening pump barrel is connect by screw thread with the lower part of mechanical support connector, on
The lower part for lengthening pump barrel is connected by the top of screw thread and pump barrel, and upward-traveling valves are located in upper lengthening pump barrel, upper internal screw thread plunger
Connector top is connect by screw thread with upward-traveling valves valve bonnet lower part, and upward-traveling valves seat compression is fixed on upward-traveling valves valve bonnet
In hole, upward-traveling valves valve ball is located inside upward-traveling valves valve bonnet, is placed on upward-traveling valves valve seat, under upper internal screw thread plunger connector
Portion is connect by screw thread with internal screw thread monoblock type plunger upper part, and internal screw thread monoblock type plunger lower part passes through screw thread and lower internal threaded column
The top connection of connector is filled in, lower travelling valve valve bonnet is located in pump barrel, and the top of lower travelling valve valve bonnet passes through screw thread and lower internal screw thread
The lower part of plunger connector connects, and the lower part of lower travelling valve valve bonnet connects lower travelling valve pressure cap, lower travelling valve valve ball and lower travelling valve
Valve seat is mounted on inside lower travelling valve valve bonnet, and lower travelling valve valve ball is placed on lower travelling valve valve seat, lower travelling valve pressure cap it is upper
Portion is connect by screw thread with the lower part of lower travelling valve valve bonnet, and is fixed the valve base that moves about of staying；Downhole pump unit is whole
Body is fixed in oil pipe, when inspection pump workover treatment can in the case where not playing flowline from downhole pump unit out；Power
Cylinder is the power device of downhole pump unit, and the pressure energy of high voltage power liquid is converted to mechanical energy, passes to oil well pump；It takes out
Oil pump is so that it is more suitable for the specific environment of coal bed gas extraction by transformation on the basis of conventional oil well pump；Screen casing plays resistance
Only coal dust enters the effect in oil pipe；Sand sediment pipe is used to the coal dust being deposited into screen casing.
Coal bed gas multi-machine interaction hydraulic-driven mining process system of the invention, its working principles are as follows: ground hydraulic pumps
It stands and converts the mechanical energy of motor to using hydraulic pump the pressure energy of power fluid, the power fluid from power flow container is by hydraulic
Pump boosting, then by the control of the piloted reducer and speed governing valve of high voltage control manifold, level pressure it is quantitative distribute to each well, ground
Face reversing mechanism automatically controls working connection commutation using electro-hydraulic reversing valve, and high pressure liquid is made to reach the dynamic of underground by power fluid pipeline
The upper and lower cavity of power cylinder drives oil pumping pump work.Well liquid is given rise to ground by oil pipe, and coal bed gas enters ground by oil jacket annulus
Face collector and delivery pipe converges.
Coal bed gas multi-machine interaction hydraulic-driven mining process system of the invention, hydraulic control process are as follows: when up stroke,
The upper access of electro-hydraulic reversing valve, the power fluid of power flow container are pressurized by hydraulic pump, are subtracted by the pilot-operated type of high voltage control manifold
Pressure valve and speed regulation valve regulation, then enter power fluid pipeline by the upper of electro-hydraulic reversing valve, then enter by central tube dynamic
Solenoid line two enters piston cylinder guide sleeve later, subsequently into piston cylinder inner cylinder cavity of resorption, drives piston stroking upward later, drives and take out
The internal screw thread monoblock type plunger uplink of oil pump, well liquid are given rise to ground by oil pipe；Power fluid in-line: power flow container → mistake
Filter → hydraulic pump → check valve → shut-off valve → piloted reducer → speed governing valve → electro-hydraulic reversing valve is upper → power liquid pipe
Line → central tube → two → piston cylinder of service line guide sleeve → piston cylinder inner cylinder cavity of resorption；Power fluid oil return line: piston cylinder inner cylinder
Epicoele → cylinder bottom → one → power fluid of service line pipeline → electro-hydraulic reversing valve is upper → counterbalance valve → power flow container；Down stroke
When, electro-hydraulic reversing valve bottom access, the power fluid of power flow container is pressurized by hydraulic pump, passes through the guide of high voltage control manifold
Formula pressure reducing valve and speed regulation valve regulation, then enter power fluid pipeline by the bottom of electro-hydraulic reversing valve, by one He of service line
Cylinder bottom drives piston downlink later, drives the internal screw thread monoblock type plunger downlink of oil well pump, make into piston cylinder inner cylinder epicoele
Oil well pump imbibition；Power fluid in-line: power flow container → filter → hydraulic pump → check valve → shut-off valve → pilot-operated type decompression
Valve → speed governing valve → electro-hydraulic reversing valve bottom → power fluid pipeline → one → cylinder bottom of service line → piston cylinder inner cylinder epicoele；Power
Liquid oil return line: piston cylinder inner cylinder cavity of resorption → two → power fluid of service line pipeline → electro-hydraulic reversing valve bottom → counterbalance valve → power
Flow container.
Compared with the existing technology, beneficial effects of the present invention are as follows:
Coal bed gas multi-machine interaction hydraulic-driven mining process system, without bar mining system, is fundamentally solved using hydraulic-driven
Determined three pump drainage extraction system rod and tube partial-wears the problem of, have the advantages that adjust ginseng convenient and adjust ginseng range big；
Coal bed gas multi-machine interaction hydraulic-driven mining process system uses hydraulic control system, and it is more that identical platform may be implemented
Machine linkage, and do not interfere with each other, greatly reduce mining cost；
The power fluid endless form of coal bed gas multi-machine interaction hydraulic-driven mining process system by the way of closed cycle,
Power fluid produces liquid with coal bed gas well and does not mix, but returns to ground by respective channel, and in so avoiding complicated grounds
Mixed liquor separating treatment is also easier to guarantee the quality of power fluid, reduces the pollution of power fluid, to reduce hydraulic system because dynamic
The failure rate of power liquid pollution, improves system effectiveness；
The downhole pump unit of coal bed gas multi-machine interaction hydraulic-driven mining process system is integrally fastened in oil pipe, inspection
When pumping workover treatment can in the case where not playing flowline from downhole pump unit out, greatly improve operating efficiency.
Detailed description of the invention
The drawings are only for the purpose of illustrating a preferred embodiment, and is not to be construed as limiting the invention.
Fig. 1 is the overall diagram of the coal bed gas multi-machine interaction hydraulic-driven mining process system of the specific embodiment of the invention；
Fig. 2 is the power cylinder knot of the coal bed gas multi-machine interaction hydraulic-driven mining process system of the specific embodiment of the invention
Composition；
Fig. 3 is the oil well pump knot of the coal bed gas multi-machine interaction hydraulic-driven mining process system of the specific embodiment of the invention
Composition；
Fig. 4 is the hydraulic control of the coal bed gas multi-machine interaction hydraulic-driven mining process system of the specific embodiment of the invention
Figure.
In figure: 100, coal bed gas multi-machine interaction hydraulic-driven mining process system, 1, ground hydraulic pumping plant, 11, power fluid
Tank, 12, motor, 13, hydraulic pump, 14, filter, 15, check valve, 16, first pressure gauge, 17, pilot operated compound relief valve, 18,
2/2-way formula solenoid valve, 19, accumulator, 2, power fluid transmission control system, 21, high voltage control manifold, 211, shut-off valve,
212, piloted reducer, 213, second pressure gauge, 214, speed governing valve, 215, flowmeter, 216, electro-hydraulic reversing valve, 217, time
Relay, 218, counterbalance valve, 22, power fluid pipeline, 23, wellhead assembly, 3, downhole pump unit, 31, power cylinder, 311, dynamic
Solenoid line one, 312, service line two, 313, central tube, 314, bilateral power pipe fitting, 315, cylinder bottom connector, 316, cylinder bottom,
317, piston, 318, piston cylinder inner cylinder, 319, piston rod, 3110, piston cylinder guide sleeve, 3111, pump power cylinder box cupling, 3112,
Valve stem piston bar box cupling, 3113, valve rod, 3114, stem guiding set, 32, oil well pump, 321, support sealing ring on box cupling, 322,
Pump core axis, 323, support sealing ring under box cupling, 324, mechanical support connector, 325, upper lengthening pump barrel, 326, upward-traveling valves,
3261, upward-traveling valves valve bonnet, 3262, upward-traveling valves valve ball, 3263, upward-traveling valves valve seat, 327, upper internal screw thread plunger connector,
328, internal screw thread monoblock type plunger, 329, pump barrel, 3210, lower internal screw thread plunger connector, 3211, lower travelling valve, 32111, downstream
Dynamic valve valve bonnet, 32112, lower travelling valve valve ball, 32113, lower travelling valve valve seat, 32114, lower travelling valve pressure cap, 3212, lower lengthening
Pump barrel, 3213, fixed valve, 32131, fixed valve valve bonnet, 32132, fixed valve valve ball, 32133, fixed valve base, 32134, solid
Determine valve valve deck, 33, screen casing, 34, sand sediment pipe, 35, silk plug, 4, oil pipe.
Specific embodiment
Technical solution of the present invention is not limited to cited specific embodiment, further includes any group between embodiment
It closes.
Such as attached drawing 1 to Fig. 3, coal bed gas multi-machine interaction hydraulic-driven mining process system, comprising: ground hydraulic pumping plant 1 moves
Power liquid transmission control system 2, downhole pump unit 3 and oil pipe 4.Ground hydraulic pumping plant 1 is the power source of whole system, will be moved
Power liquid is transported to downhole pump unit 3 by power fluid transmission control system 2, and the driving work of downhole pump unit 3 is with complete
At the mining of well liquid, bottom pressure being reduced, realizes the harvesting of coal bed gas, downhole pump unit 3 is integrally fastened in oil pipe 4,
When inspection pump workover treatment can in the case where not playing flowline 4 from downhole pump unit 3 out.
Ground hydraulic pumping plant 1, comprising: power flow container 11, motor 12, hydraulic pump 13, filter 14, check valve 15,
One pressure gauge 16, pilot operated compound relief valve 17,2/2-way formula solenoid valve 18, accumulator 19；Wherein, hydraulic pump 13 is ground hydraulic
The core component of pumping plant 1, power flow container 11 are used to store hydraulic system power fluid；Hydraulic pump 13 is driven by motor 12, will
Power fluid in power flow container 11 pumps out after the filtering of filter 14, and the power fluid in power flow container 11 is after the boosting of hydraulic pump 13
Into high voltage control manifold 21,13 exit of hydraulic pump is connected with check valve 15, and the check valve 15 is for liquid in anti-locking system
The steady operation of hydraulic pump is impacted and influenced to pressure；Pilot operated compound relief valve 17 is in parallel with hydraulic pump 13, is used for regulating system pressure；Institute
It states 2/2-way formula solenoid valve 18 to be connected with pilot operated compound relief valve 17, the accumulator 19 is in parallel with hydraulic pump 13, for adjusting
System pressure, when system pressure deficiency, make-up system absorbs portion of energy when system instantaneous pressure increases, whole to guarantee
A system pressure is normal.The first pressure gauge 16 is in parallel with hydraulic pump 13, and measuring instrument and control system complete system operation
Detection, monitoring parameters remote transmission and transmission fault alarm information of parameter etc..
Preferably, hydraulic pump can use reciprocating pump.
Power fluid transmission control system 2, comprising: high voltage control manifold 21, shut-off valve 211, piloted reducer 212,
Two pressure gauges 213, speed governing valve 214, flowmeter 215, electro-hydraulic reversing valve 216, the time relay 217, counterbalance valve 218, power fluid
Pipeline 22, wellhead assembly 23；Wherein, high voltage control manifold 21 is by shut-off valve 211, piloted reducer 212, second pressure gauge
213, speed governing valve 214, flowmeter 215, electro-hydraulic reversing valve 216, the time relay 217 and counterbalance valve 218 integrate, application
When be mounted between power fluid distribution, the power fluid pressure and flow of each well head are transported in control；Power fluid pipeline 22 is two and is applicable in
In the high-pressure hose of mesohigh, one end is connected with high voltage control manifold 21, and the other end passes through wellhead assembly 23 and underground is pumped
Pump assembly 3 is connected.
Downhole pump unit 3, comprising: power cylinder 31, service line 1, service line 2 312, central tube 313,
Bilateral power pipe fitting 314, cylinder bottom connector 315, cylinder bottom 316, piston 317, piston cylinder inner cylinder 318, piston rod 319, piston cylinder
Guide sleeve 3110, pump power cylinder box cupling 3111, valve stem piston bar box cupling 3112, valve rod 3113, stem guiding cover 3114, oil well pump
32, box cupling 323, mechanical support connector 324, upper lengthening pump under box cupling 321 on sealing ring, pump core axis 322, support sealing ring are supported
Cylinder 325, upward-traveling valves 326, upward-traveling valves valve bonnet 3261, upward-traveling valves valve ball 3262, upward-traveling valves valve seat 3263, upper internal screw thread
Plunger connector 327, internal screw thread monoblock type plunger 328, pump barrel 329, lower internal screw thread plunger connector 3210, lower travelling valve 3211, under
Travelling valve valve bonnet 32111, lower travelling valve valve ball 32112, lower travelling valve valve seat 32113, lower travelling valve pressure cap 32114, lower lengthening
Pump barrel 3212, fixed valve 3213, fixed valve valve bonnet 32131, fixed valve valve ball 32132, fixed valve base 32133, fixed valve valve
Lid 32134, screen casing 33, sand sediment pipe 34, silk plug 35；
Wherein, service line 1 is connect by union elbow with bilateral power pipe fitting 314, service line 2 312
Top is connect by union elbow with bilateral power pipe fitting 314, and the lower part of service line 2 312 passes through union elbow and piston
Cylinder guide sleeve 3110 connects, and central tube 313 is connect by screw thread with bilateral power pipe fitting 314, and the top of cylinder bottom connector 315 is logical
It crosses screw thread to connect with bilateral power pipe fitting 314, the lower part of cylinder bottom connector 315 is connect by screw thread with the top of cylinder bottom 316, cylinder
The lower part at bottom 316 is connect by screw thread with the top of piston cylinder inner cylinder 318, and piston 317 passes through the top of nut and piston rod 319
The lower part of connection, piston cylinder inner cylinder 318 is connect by screw thread with the top of piston cylinder guide sleeve 3110, piston cylinder guide sleeve 3110
Lower part connect with the top of pump power cylinder box cupling 3111 by screw thread, the lower part of piston rod 319 passes through valve stem piston bar box cupling
3112 connect with the top of valve rod 3113, and the lower part of valve rod 3113 is connect by screw thread with upward-traveling valves valve bonnet 3261, and valve rod is led
Connect to the top of set 3114 by screw thread with the lower part of pump power cylinder box cupling 3111, the top of pump core axis 322 pass through screw thread and
The lower part connection of stem guiding set 3114, the lower part of pump core axis 322 are connect by screw thread with the top of mechanical support connector 324,
Box cupling 321 is connect by screw thread with box cupling 323 under support sealing ring on support sealing ring, and the upper top for lengthening pump barrel 325 passes through
Screw thread is connect with the lower part of mechanical support connector 324, and the upper lower part for lengthening pump barrel 325 is connected by the top of screw thread and pump barrel 329
It connects, upward-traveling valves 326 are located in upper lengthening pump barrel 325, and upper 327 top of internal screw thread plunger connector passes through screw thread and upward-traveling valves valve
The connection of 3261 lower parts is covered, and upward-traveling valves valve seat 3263 is pressed abd fixed in 3261 hole of upward-traveling valves valve bonnet, upward-traveling valves valve
Ball 3262 is located inside upward-traveling valves valve bonnet 3261, is placed on upward-traveling valves valve seat 3263, under upper internal screw thread plunger connector 327
Portion is connect by screw thread with 328 top of internal screw thread monoblock type plunger, 328 lower part of internal screw thread monoblock type plunger pass through screw thread with it is lower interior
The top of screw thread plunger connector 3210 connects, and lower travelling valve valve bonnet 3211 is located in pump barrel 329, lower travelling valve valve bonnet 32111
Top is connect by screw thread with the lower part of lower internal screw thread plunger connector 3210, and the lower part of lower travelling valve valve bonnet 32111 connects downstream
Dynamic valve pressure cap 32114, lower travelling valve valve ball 32112 and lower travelling valve valve seat 32113 are mounted in lower travelling valve valve bonnet 32111
Portion, lower travelling valve valve ball 32112 are placed on lower travelling valve valve seat 32113, and the top of lower travelling valve pressure cap 32114 passes through screw thread
It is connect with the lower part of lower travelling valve valve bonnet 32111, and is fixed the valve base 32113 that moves about of staying；Downhole pump unit 3 is whole
Body is fixed in oil pipe 4, when inspection pump workover treatment can in the case where not playing flowline 4 from downhole pump unit 3 out；It is dynamic
Power cylinder 31 is the power device of downhole pump unit 3, and the pressure energy of high voltage power liquid is converted to mechanical energy, passes to oil pumping
Pump 32；Oil well pump 32 is so that it is more suitable for the specific environment of coal bed gas extraction by transformation on the basis of conventional oil well pump；Sieve
Pipe 33 plays the role of that coal dust is prevented to enter in oil pipe 4；Sand sediment pipe 34 is used to the coal dust being deposited into screen casing 33.
Coal bed gas multi-machine interaction hydraulic-driven mining process system of the invention, its working principles are as follows: ground hydraulic pumps
It stands 1 pressure energy for converting the mechanical energy of motor 12 to using hydraulic pump 13 power fluid, the power fluid from power flow container 11
It boosts by hydraulic pump 13, then the control of piloted reducer 212 and speed governing valve 214 by high voltage control manifold 21, level pressure
Quantitative distributes to each well, and ground reversing mechanism automatically controls working connection commutation using electro-hydraulic reversing valve 216, passes through high pressure liquid
Power fluid pipeline 22 reaches the upper and lower cavity of the power cylinder 31 of underground, and oil well pump 32 is driven to work.Well liquid is given rise to by oil pipe 4
Ground, coal bed gas enter surface gathering and transferring manifold by oil jacket annulus.
In conjunction with Fig. 4, coal bed gas multi-machine interaction hydraulic-driven mining process system of the invention, hydraulic control process are as follows:
When up stroke, the upper access of electro-hydraulic reversing valve 216, the power fluid of power flow container 11 is pressurized by hydraulic pump 13, by high voltage-controlled
The piloted reducer 212 and speed governing valve 214 of tubulation remittance 21 are adjusted, and then enter power by the upper of electro-hydraulic reversing valve 216
Then liquid pipe line 22 enters service line 2 312 by central tube 313, enter piston cylinder guide sleeve 3110 later, subsequently into
318 cavity of resorption of piston cylinder inner cylinder drives 317 uplink of piston later, drives 328 uplink of internal screw thread monoblock type plunger of oil well pump 32,
Well liquid is given rise to ground by oil pipe 4；Power fluid in-line: power flow container 11 → filter, 14 → hydraulic pump, 13 → check valve
Upper → power fluid the pipeline 22 of 15 → shut-off valve, 211 → piloted reducer, 212 → speed governing valve, 214 → electro-hydraulic reversing valve 216 →
318 cavity of resorption of central tube 313 → service line, 2 312 → piston cylinder, 3110 → piston cylinder of guide sleeve inner cylinder；Power fluid oil return line: living
318 epicoeles of plug cylinder inner cylinder → 22 → electro-hydraulic reversing valve of cylinder bottom 316 → service line, one 311 → power fluid pipeline 216 is upper → back
218 → power of pressure valve flow container 11；When down stroke, the next access of electro-hydraulic reversing valve 216, the power fluid of power flow container 11, by liquid
Press pump 13 is pressurized, and is adjusted by the piloted reducer 212 and speed governing valve 214 of high voltage control manifold 21, is then changed by electro-hydraulic
Enter power fluid pipeline 22 to the bottom of valve 216, by service line 1 and cylinder bottom 316, on piston cylinder inner cylinder 318
Chamber drives 317 downlink of piston later, drives 328 downlink of internal screw thread monoblock type plunger of oil well pump 32, makes 32 imbibition of oil well pump；
Power fluid in-line: power flow container 11 → filter, 14 → hydraulic pump, 13 → check valve, 15 → shut-off valve, 211 → pilot-operated type decompression
216 bottoms of valve 212 → speed governing valve, 214 → electro-hydraulic reversing valve → one 311 → cylinder bottom of power fluid 22 → service line of pipeline 316 → work
318 epicoele of plug cylinder inner cylinder；Power fluid oil return line: 318 cavity of resorptions of piston cylinder inner cylinder → 2 312 → power fluid of service line pipeline 22 →
216 bottoms of electro-hydraulic reversing valve → 218 → power of counterbalance valve flow container 11.
The present invention, without bar mining system, fundamentally solves asking for three pump drainage extraction system rod and tube partial-wears using hydraulic-driven
Topic has the advantages that adjust ginseng convenient and adjusts ginseng range big；Identical platform multi-machine interaction may be implemented, and do not interfere with each other, significantly
Reduce mining cost；By the way of closed cycle, power fluid produces liquid with coal bed gas well and does not mix power fluid endless form, and
It is that ground is returned to by respective channel, reduces the failure rate that hydraulic system is polluted by power fluid, improve system effectiveness；Underground
Oil pumping pump assembly be integrally fastened in oil pipe, inspection pump workover treatment when can in the case where not playing flowline from out underground pump
Pump assembly greatly improves operating efficiency.
It certainly, is the preferred embodiment of the present invention above.It should be pointed out that for those skilled in the art
For, without departing from the basic principles of the invention, several improvements and modifications can also be made, these improvements and modifications
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of coal bed gas multi-machine interaction hydraulic-driven mining process system, which is characterized in that including ground hydraulic pumping plant, power
Liquid transmission control system and downhole pump unit, ground hydraulic pumping plant convey power fluid by power fluid transmission control system
To downhole pump unit, drive the work of downhole pump unit to complete the mining of well liquid, the ground hydraulic pumping plant includes:
Power flow container, motor, hydraulic pump, filter, check valve, first pressure gauge, pilot operated compound relief valve, 2/2-way formula electromagnetism
Valve, accumulator；Wherein, hydraulic pump is pumped out, power by motor drive after being filtered the power fluid in power flow container
Liquid enters high voltage control manifold after hydraulic pump boosts, and is connected with check valve at hydraulic pump outlet, pilot operated compound relief valve with it is hydraulic
Pump is in parallel, and 2/2-way formula solenoid valve is connected with pilot operated compound relief valve, and accumulator is in parallel with hydraulic pump, first pressure gauge with it is hydraulic
Pump is in parallel；
Wherein, downhole pump unit includes: that power cylinder, service line one, service line two, central tube, bilateral power pipe connect
Head, cylinder bottom connector, cylinder bottom, piston, piston cylinder inner cylinder, piston rod, piston cylinder guide sleeve, pump power cylinder box cupling, valve stem piston bar
Box cupling, stem guiding set, oil well pump, supports box cupling, mechanical support under box cupling on sealing ring, pump core axis, support sealing ring at valve rod
Connector, upper lengthening pump barrel, upward-traveling valves, upper internal screw thread plunger connector, internal screw thread monoblock type plunger, pump barrel, lower internal screw thread plunger
Connector, lower travelling valve, lower lengthening pump barrel, fixed valve, screen casing, sand sediment pipe, silk plug；Service line one passes through union elbow and bilateral
The top of the connection of power pipe fitting, service line two is connect by union elbow with bilateral power pipe fitting, service line two
Lower part is connect by union elbow with piston cylinder guide sleeve, and central tube is connect by screw thread with bilateral power pipe fitting, and cylinder bottom connects
The top of head is connect by screw thread with bilateral power pipe fitting, and the lower part of cylinder bottom connector is connected by the top of screw thread and cylinder bottom,
The lower part of cylinder bottom is connect by screw thread with the top of piston cylinder inner cylinder, and piston is connected by the top of nut and piston rod, piston
The lower part of cylinder inner cylinder is connect by screw thread with the top of piston cylinder guide sleeve, and the lower part of piston cylinder guide sleeve is dynamic by screw thread and pump
The top of power cylinder box cupling connects, and the lower part of piston rod is connected by the top of valve stem piston bar box cupling and valve rod, the lower part of valve rod
It being connect by screw thread with upward-traveling valves valve bonnet, the top of stem guiding set is connect by screw thread with the lower part of pump power cylinder box cupling,
The top of pump core axis is connect by screw thread with the lower part that stem guiding covers, and the lower part of pump core axis passes through screw thread and mechanical support connector
Top connection, support sealing ring on box cupling by screw thread with support sealing ring under box cupling connect, it is upper lengthening pump barrel top lead to
It crosses screw thread to connect with the lower part of mechanical support connector, the upper lower part for lengthening pump barrel is connected by the top of screw thread and pump barrel, upstream
Dynamic valve is located in upper lengthening pump barrel, and upper internal screw thread plunger connector lower part is connect by screw thread with internal screw thread monoblock type plunger upper part,
Internal screw thread monoblock type plunger lower part is connect by screw thread with the top of lower internal screw thread plunger connector, and lower travelling valve valve bonnet is located at pump barrel
Interior, the top of lower travelling valve valve bonnet is connect by screw thread with the lower part of lower internal screw thread plunger connector, the lower part of lower travelling valve valve bonnet
Lower travelling valve pressure cap is connected, lower travelling valve valve ball and lower travelling valve valve seat are mounted on inside lower travelling valve valve bonnet, lower travelling valve valve
Ball is placed on lower travelling valve valve seat, and the top of lower travelling valve pressure cap is connect by screw thread with the lower part of lower travelling valve valve bonnet, and
It is fixed the valve base that moves about of staying, downhole pump unit is integrally fastened in oil pipe.
2. coal bed gas multi-machine interaction hydraulic-driven mining process system according to claim 1, which is characterized in that the liquid
Press pump uses reciprocating pump.
3. coal bed gas multi-machine interaction hydraulic-driven mining process system according to claim 1 or 2, which is characterized in that institute
State power fluid transmission control system include: high voltage control manifold, shut-off valve, piloted reducer, second pressure gauge, speed governing valve,
Flowmeter, electro-hydraulic reversing valve, the time relay, counterbalance valve, power fluid pipeline, wellhead assembly；Wherein, high voltage control manifold will be cut
Only valve, piloted reducer, second pressure gauge, speed governing valve, flowmeter, electro-hydraulic reversing valve, the time relay and counterbalance valve are integrated
Together, the power fluid pressure and flow of each well head are transported in control；Power fluid pipeline one end is connected with high voltage control manifold, separately
One end passes through wellhead assembly and is connected with downhole pump unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710333370.0A CN107100592B (en) | 2017-05-12 | 2017-05-12 | Coal bed gas multi-machine interaction hydraulic-driven mining process system |
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| CN201710333370.0A CN107100592B (en) | 2017-05-12 | 2017-05-12 | Coal bed gas multi-machine interaction hydraulic-driven mining process system |
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| CN107100592A CN107100592A (en) | 2017-08-29 |
| CN107100592B true CN107100592B (en) | 2019-07-09 |
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Citations (6)
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|---|---|---|---|---|
| RU2239052C1 (en) * | 2003-02-25 | 2004-10-27 | Грабовецкий Владимир Леонидович | Well sucker-rod pump for extracting liquid and gas |
| CN1673534A (en) * | 2005-04-13 | 2005-09-28 | 大庆油田有限责任公司 | Well dynamic direct-driven plunger oil-well pump |
| CN201100228Y (en) * | 2007-09-07 | 2008-08-13 | 姚向青 | A novel measuring spraying linked oil pump |
| CN102287358A (en) * | 2011-08-30 | 2011-12-21 | 中国石油大学(华东) | Long-plunger type dual-barrel coal-dust resistant discharging and extracting pump |
| CN202954747U (en) * | 2012-10-31 | 2013-05-29 | 北京九尊能源技术股份有限公司 | Drainage and production string of coal-bed gas well |
| CN103629093A (en) * | 2013-12-13 | 2014-03-12 | 贵州盘江煤层气开发利用有限责任公司 | Sand prevention gas-proof tubular pump for drainage and exploitation of coal-bed gas well |
-
2017
- 2017-05-12 CN CN201710333370.0A patent/CN107100592B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2239052C1 (en) * | 2003-02-25 | 2004-10-27 | Грабовецкий Владимир Леонидович | Well sucker-rod pump for extracting liquid and gas |
| CN1673534A (en) * | 2005-04-13 | 2005-09-28 | 大庆油田有限责任公司 | Well dynamic direct-driven plunger oil-well pump |
| CN201100228Y (en) * | 2007-09-07 | 2008-08-13 | 姚向青 | A novel measuring spraying linked oil pump |
| CN102287358A (en) * | 2011-08-30 | 2011-12-21 | 中国石油大学(华东) | Long-plunger type dual-barrel coal-dust resistant discharging and extracting pump |
| CN202954747U (en) * | 2012-10-31 | 2013-05-29 | 北京九尊能源技术股份有限公司 | Drainage and production string of coal-bed gas well |
| CN103629093A (en) * | 2013-12-13 | 2014-03-12 | 贵州盘江煤层气开发利用有限责任公司 | Sand prevention gas-proof tubular pump for drainage and exploitation of coal-bed gas well |
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| CN107100592A (en) | 2017-08-29 |
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