CN109025909B - The application method of individual well casing gas sulphur removal pressurization storage device - Google Patents
The application method of individual well casing gas sulphur removal pressurization storage device Download PDFInfo
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- CN109025909B CN109025909B CN201810627483.6A CN201810627483A CN109025909B CN 109025909 B CN109025909 B CN 109025909B CN 201810627483 A CN201810627483 A CN 201810627483A CN 109025909 B CN109025909 B CN 109025909B
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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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
-
- 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
- E21B43/34—Arrangements for separating materials produced by the well
Abstract
The present invention relates to a kind of application methods of individual well casing gas sulphur removal pressurization storage device.Its technical solution is: oil recovery exhaust apparatus will be connected in chemical reaction equipment after casing gas extraction by escape pipe；The inner cavity of gas-drying apparatus is equipped with desiccant, is equipped with compression air inlet pipe in gas-drying apparatus, gas-drying apparatus is connected to by gas collection connecting tube with reactor tank；Dried natural pressure is reduced in pressurized reservoir by multistage laborsaving gas compressing apparatus again.Beneficial effect is: the present invention utilizes the reciprocating motion of beam pumping unit, it can be by the timely discharge processing of the natural gas in casing, natural gas is compressed by multistage laborsaving gas compressing apparatus again, compressed gas is stored in air accumulator, it is transported again by tank car timing, structure is simple and durable, can substantially realize the energy consumption of compression, and mechanical structure is used, it is more durable.
Description
Technical field
The present invention relates to a kind of oil field individual well production auxiliary device and method, in particular to a kind of individual well casing gas sulphur removal increases
Press the application method of storage device.
Background technique
In oil exploitation, there are many field individual wells, and there is also a large amount of high seepage wells in these individual wells, due to stratum
The middle a large amount of natural gas of association, but it is not enough to be formed construction of natural gas fields well, in this way, during oil exploitation, due to a large amount of
The presence of gas will lead to the air pressure in the casing of oil well raising, and the hydrodynamic face of oil well can because gas pressure increase and under
Drop, and then cause the feed flow of oil well insufficient, so well must be stopped at this time, then the bulk gas in casing is discharged or drawn
It burns out, the hydrodynamic face of casing can be made to be promoted to normal level after discharging gas, and then oil producing operation can be continued；And it burns then
A large amount of natural gas energy resource can be wasted.Moreover, the method for gas is usually directly to open in existing individual well relief sleeve
The valve of well head, directly discharges into the atmosphere casing gas, not only will cause a large amount of wastes of resource, but also will cause serious
Environmental pollution the great person can be also generated to operator if the natural gas generated in oil reservoir contains hydrogen sulfide gas
Security risk, this needs to design a safe and reliable device just to realize the discharge of casing gas, removes hydrogen sulfide, and collected
Middle storage is pipelined to gathering station.
Chinese patent literature number is 102747989B, and patent name is " oil well casing collection device ", has pumping in oil well
Oil pipe, sucker rod, casing, sucker rod are connected on pumping unit, and pumping unit extracts Crude Oil Transportation out to petroleum pipeline from oil pick-up tube.It should
Device includes casing connection pipe, check valve A, booster pump, check valve B, oil pipe connecting tube.Booster pump contains connecting rod, small end
It is fixedly connected with pressure arm, sucker rod top is fixedly connected with pressure buckle, and pressure buckle is located above pressure arm.When booster pump is installed
Connecting rod is parallel with sucker rod, and pressure arm intersects but is not connected to sucker rod.When sucker rod lifts under pumping unit drive, casing gas
Under the pressure of itself, driving piston, connecting rod and pressure arm uplink；Sucker rod passes through pressure in self gravitation effect downlink
Press pressure arm, drive link and piston downlink, the casing gas in compression cylinder are detained, compressed casing gas enters petroleum pipeline
In.But it is the problem is that be only that function is exhausted using the power of pumping unit, and by the natural gas compressing of discharge
It has been input in petroleum pipeline.
Chinese patent literature number is 207245681U, and patent name is that " a kind of separation of well casing gas, is pressurized back purification
Receipts system ", which is arranged between the oil-gas pipeline of oil well and external transport pipeline, including unpowered gas-liquid separation purification device,
Oil-free oil gas compression unit, gas-liquid separation recycling meter control unit, temperature self adjusting defroster, unpowered gas-liquid separation purification
Temperature self adjusting defroster is equipped with outside device；Unpowered gas-liquid separation purification device is for the separation of well casing gas and net
Change；Oil-free oil gas compression unit is for being pressurized gas；Gas-liquid separation recycling meter control unit is for controlling oil well casing
Gas-liquid separation, purification, the explosion-proof control of overall process of pressurization and the meter of gas are shown.Advantage is: realizing point of comprehensive well casing gas
From, purification, pressurization recycling；Well casing gas power-free separation device is provided, does not consume any power, only by primary gas-liquid point
From device, it can be realized and be automatically separated, save the energy, and good separating effect.But deficiency existing for the patent is: being not particularly suited for
The individual well operation in field because field individual well due to not having the distance of mouthful well farther out, is fitted without gas transmission line, and only pass through by
The natural gas of compression is put into storage tank, then is pulled away by tank car timing.
Chinese patent literature number is 102297336A, and patent name is a kind of " oil field well casing natural gas multi-stage compression
Recyclable device ", natural gas collecting tank, middle pressure air accumulator and high-pressure gas including sequential concatenation on natural-gas transfer pipeline
Tank；Natural-gas transfer pipeline between the natural gas collecting tank and middle pressure air accumulator is equipped with first order booster pump, and middle pressure
Natural-gas transfer pipeline between air accumulator and high pressure tank is equipped with second level booster pump.The present invention can be realized individual well,
The multi-stage compression of more casing natural gases is recycled automatically, can effectively solve the problem that the waste and combustion of current oil field well casing natural gas
The problems such as natural gas pollutes environment bring is burnt, also solves oil well dispersion, quantity is more, and needing a large amount of personnel is that its is on duty
Problem.And its manufacturing cost is low, transports, is easy for installation, taking up space small, and be not susceptible to failure, long service life.But
It the problem is that: energy consumption is big, and multiple booster pumps energy consumptions are larger, at high cost, compared with the value of the natural gas of collection, effect
Benefit is not high.
Summary of the invention
The purpose of the present invention is to drawbacks described above of the existing technology, provide a kind of individual well casing gas sulphur removal pressurization
The application method of storage device allows horizontal exhaust apparatus by the day in casing using the reciprocating motion of beam pumping unit
Right gas is timely discharged, and keeps entire oil pumping system more energy saving, in addition, the natural gas of synchronous discharge is by removing hydrogen sulfide and two
Carbonoxide, then be dried and dehydrated, then natural gas is compressed by unpowered compression set, compressed gas is stored in
In air accumulator, structure is simple and durable, and security risk will not occur.
A kind of application method for individual well casing gas sulphur removal pressurization storage device that the present invention mentions, technical solution is to include
Following steps:
(a), firstly, assembling individual well casing gas sulphur removal is pressurized storage device, oil recovery exhaust apparatus is mounted on beam type and is taken out
The lower section pedestal of oil machine fixes, and exhaust pipe (4) is connected to the annular space between casing (1) and oil pipe (2), and exhaust pipe (4)
Upper installation shut-off valve (5)；One end of drawstring is connected to the rear end of walking beam, and the other end of drawstring is connected to oil recovery row around fixed pulley
The outer end of the sealing piston (10) of device of air；The escape pipe of the Exhaust Pressure connector (6) for the exhaust apparatus that recovers the oil is connected to again
The top side of the bottom of reactor tank (15), reactor tank (15) is connected to gas-drying apparatus (21) by gas collection connecting tube (19)
The top of one end of bottom, gas-drying apparatus (21) other end passes through the multistage laborsaving gas compression dress of compression air inlet pipe (23) connection
The outlet of the pressurization power cylinder (24) set, the high pressure outlet air pipe (30) of multistage laborsaving gas compressing apparatus right end passes through high pressure admission
Pipe (43) and gas collection ball-and-seat (42) are connected to one end of compressed gas holding vessel (33), and the other end of compressed gas holding vessel (33) is set
Have gas vent (36), and compressed gas holding vessel (33) is connected to chemical reaction dress by being connected by circulation pipe (44) and safety valve (38)
The reactor tank (15) set；
(b), secondly, beam pumping unit starting operation, with the up and down motion of walking beam, drives sealing piston by drawstring
(10) piston motion is done, when sealing piston (10) moves out, the sealed steel ball (7) of Exhaust Pressure connector (6) is displaced outwardly, will
Natural gas extraction between oil pipe and casing, meanwhile, oil pumping polish rod (3), which moves up and down, realizes synchronous oil recovery, works as sealing piston
(10) when pushing inwardly, sealed steel ball (7) seals up the air inlet of Exhaust Pressure connector (6) under the action of retaining spring (8)
Mouthful, and the natural gas of Exhaust Pressure connector inner cavity is shifted onto reactor tank (15), chemical reaction liquid is housed in reactor tank (15)
(20), by hydrogen sulfide, the carbon dioxide reaction in chemical reaction liquid (20) and natural gas, then, remaining natural gas enters
Gas-drying apparatus is dried in (21), and the gas after drying is transported to multistage laborsaving gas pressure by compressing air inlet pipe (23)
Compression apparatus is admitted to compressed gas holding vessel (33) by the multistage laborsaving pressurized natural gas of gas compressing apparatus, compressed gas storage
The natural gas for depositing tank (33) accesses tank car by gas vent (36) and transports；And compressed gas holding vessel (33) pressure it is excessive when, lead to
It crosses and is connected by circulation pipe (44) and safety valve (38) is transported in reactor tank (15), continue cycling through, avoid compressed gas holding vessel (33)
Pressure it is too big.
Preferably, the pressurization of multistage laborsaving gas compressing apparatus is as follows:
A, compression air inlet pipe (23) is dynamic by being transported to pressurization at pressurization power cylinder (24) left side air inlet A by natural gas
Power cylinder (24) inner cavity, natural gas are transported between power piston (27) and pressurization power cylinder (24) by supercharge pipe (25)
Cavity, then it is transported to the cavity between high pressure piston (28) and two-stage supercharging power cylinder (32) by high-pressure air feed pipe (29), then
It forms pipe (31) by high pressure to be transported in high pressure outlet air pipe (30), the natural gas pressure of each chamber is identical；The power is living
Plug (27) moves to the right under the promotion of natural gas, when the left end of power piston (27) is moved to the B of pressurization power cylinder (24)
Behind place, meanwhile, the right end of power piston (27) is moved at the D of two-stage supercharging power cylinder (32), meanwhile, high pressure piston (28)
Right end is moved at the F of high pressure outlet air pipe (30), at this point, high pressure piston (28) left end and pressurization power cylinder (24) formation are closed
First cavity, pressure with high pressure piston (28) the lasting enhancing that moves right, and the speed of high pressure piston (28) continue subtracting
Slowly；Meanwhile high pressure piston (28) left end and two-stage supercharging power cylinder (32) form the second closed cavity, pressure is living with high pressure
The lasting enhancing that moves right of (28) is filled in, and the speed of high pressure piston (28) continues slowing down；Meanwhile high pressure piston (28) and high
The pressure of the third cavity between tracheae (30) is extruded in lasting increase, until gas collection ball-and-seat (42) open and by third cavity
Natural gas transportation to compressed gas holding vessel (33), first time compression process is completed；
B, when the gas of the first cavity and the second cavity is compressed to power piston (27) and high pressure piston (28) stop to
When right movement, under the action of the compressed gas of the first cavity and the second cavity, power piston (27) and high pressure piston (28) are anti-
To movement, until the left end of power piston (27) is moved to the left side at B, the right end of power piston (27) is moved to the left side at C
The natural gas of air inlet pipe (23) is compressed again by being transported at air inlet A at this point, natural gas transportation channel is again turned in side
High pressure outlet air pipe (30) makes power piston (27) and high pressure piston (28) Lai Huiyun under the promotion for the natural gas that casing comes out
It is dynamic, natural gas compressing is constantly input to compressed gas holding vessel (33).
Preferably, above-mentioned chemical reaction equipment includes reactor tank (15), liquidometer (16), taphole (17), liquid injection hole
(18), gas collection connecting tube (19), chemical reaction liquid (20) use hydrogen-oxygen in the chemical reaction liquid (20) that reactor tank (15) is provided with
Change sodium solution, the side of reactor tank (15) is equipped with liquidometer (16), and top side is equipped with liquid injection hole (18), and the other side is equipped with gas collection
One end of connecting tube (19) is equipped with taphole (17) in the bottom side of reactor tank (15)；
Preferably, above-mentioned natural gas drying device includes gas-drying apparatus (21), desiccant (22), compression air inlet pipe
(23), the inner cavity of the gas-drying apparatus (21) is equipped with desiccant (22), and desiccant (22) uses calcium oxide particle, dry in gas
The top left side of dry device (21) is equipped with compression air inlet pipe (23), and the bottom right of gas-drying apparatus (21) passes through gas collection connecting tube
(19) it is connected to reactor tank (15)；
Preferably, the above-mentioned laborsaving gas compressing apparatus of multistage include pressurization power cylinder (24), it is supercharge pipe (25), close
Sealing rubber ring (26), power piston (27), high pressure piston (28), high-pressure air feed pipe (29), high pressure outlet air pipe (30), high pressure form pipe
(31) and two-stage supercharging power cylinder (32), the pressurization power cylinder (24) are circle tube cylinder structure, in pressurization power cylinder
(24) left side is pressurized on the right side of power cylinder (24) by compression air inlet pipe (23) connection gas-drying apparatus (21) and is fixedly connected with two
Grade is pressurized power cylinder (32), and high pressure is fixedly connected on the right side of two-stage supercharging power cylinder (32) and forms pipe (31), high pressure forms pipe
(31) outer end is connected to compressed gas holding vessel (33) by high-pressure pipe (43) and gas collection ball-and-seat (42)；In the increasing
Power piston (27) are installed in the inner cavity of pressure power cylinder (24) and two-stage supercharging power cylinder (32) composition, in high pressure outlet air pipe (30)
Chamber installs high pressure piston (28)；
Supercharge pipe (25) are equipped in the outer exterior wall of pressurization power cylinder (24), and pass through high-pressure air feed pipe (29)
Connection pressurization power cylinder (24) and two-stage supercharging power cylinder (32) forms pipe (31) by high pressure and is connected to two-stage supercharging power cylinder
(32) and high pressure outlet air pipe (30).
The beneficial effects of the present invention are: the present invention utilizes the reciprocating motion of beam pumping unit, make oil recovery exhaust apparatus can
The natural gas in casing to be timely discharged, the natural gas of synchronous discharge is by removing hydrogen sulfide and carbon dioxide, then carries out
Drying and dehydrating, then natural gas is compressed by multistage laborsaving gas compressing apparatus, compressed gas is stored in air accumulator
In, then transported by tank car timing, structure of the invention is simple and durable, can be substantially real by multistage laborsaving gas compressing apparatus
The energy consumption now compressed, and mechanical structure is used, it is more durable；
In addition, laborsaving its clever structure of gas compressing apparatus of multistage that the present invention mentions, takes full advantage of natural gas at A
There are certain pressure, that is, power, power piston can be instigated and moved by A to B, when beginning, the pressure at ABCDEF is equal.
Driving force is the maximum area of power piston and the difference in areas bring of high pressure piston, power piston and high pressure piston from A to B from
Movement, form a biggish kinetic energy, after the left end of power piston and right end are crossed at B, D respectively, at C, E in pressure
It just will increase, that is, initial kinetic energy will be converted into the potential energy of gas；Potential energy after potential energy reaches maximum value, in CEF
Piston motion system will be pushed to move from B to A, at this moment, due to inhibition at A, the speed for reaching piston at A is reduced to zero,
At this moment it recycles again, makes natural gas by constantly by pressure-increasing unit to compressed gas holding vessel, and realize energy conservation and labour-saving
Purpose, to realize the greatest benefit of casing natural gas recycling.
Detailed description of the invention
Attached drawing 1 is structural schematic diagram of the invention；
Attached drawing 2 is the scheme of installation of oil recovery exhaust apparatus；
Attached drawing 3 is the structural schematic diagram of multistage laborsaving gas compressing apparatus；
Attached drawing 4 is the first stage state diagram of the compression of multistage laborsaving gas compressing apparatus；
Attached drawing 5 is the second stage working state figure of the compression of multistage laborsaving gas compressing apparatus；
Attached drawing 6 is a schematic structural view of Embodiment 2 of the present invention；
Attached drawing 7 is the structural schematic diagram of the laborsaving gas compressing apparatus of multistage of embodiment 2；
Attached drawing 8 is the first stage state diagram of the laborsaving gas compressing apparatus of multistage of embodiment 2；
Attached drawing 9 is the second stage state diagram of the laborsaving gas compressing apparatus of multistage of embodiment 2；
Attached drawing 10 is a schematic structural view of Embodiment 3 of the present invention；
In upper figure: casing 1, oil pipe 2, oil pumping polish rod 3, exhaust pipe 4, shut-off valve 5, Exhaust Pressure connector 6, sealed steel ball 7,
Retaining spring 8, retaining spring baffle ring 9, sealing piston 10, returning spring 11, seal cylinder sleeve 12, returning spring baffle ring 13, outlet
Ball-and-seat 14, reactor tank 15, liquidometer 16, taphole 17, liquid injection hole 18, gas collection connecting tube 19, chemical reaction liquid 20, gas are dry
Dry device 21, desiccant 22, compression air inlet pipe 23, pressurization power cylinder 24, supercharge pipe 25, sealing rubber ring 26, power piston 27,
High pressure piston 28, high-pressure air feed pipe 29, high pressure outlet air pipe 30, high pressure form pipe 31, two-stage supercharging power cylinder 42, compressed gas storage
Tank 33, pressure gauge 34, holding vessel safety valve 35, gas vent 36, deflation shut-off valve 37, safe valve body 38, regulating nut 39, pressure
Power spring 40, sealed steel ball 41, gas collection ball-and-seat 42, high-pressure pipe 43, be connected by circulation pipe 44, fixed pulley 45, check valve 46,
Limited block 47.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1, referring to attached drawing 1-5, the individual well casing gas sulphur removal that the present invention mentions is pressurized storage device, technical solution
It is: including oil recovery exhaust apparatus, chemical reaction equipment, natural gas drying device and multistage laborsaving gas compressing apparatus and compressed gas
Holding vessel 33 is connected after the oil recovery exhaust apparatus produces the natural gas between casing 1 and oil pipe 2 by escape pipe
Into chemical reaction equipment, the chemical reaction equipment includes reactor tank 15, liquidometer 16, taphole 17, liquid injection hole 18, gas collection
Connecting tube 19, chemical reaction liquid 20 use sodium hydroxide solution, reactor tank 15 in the chemical reaction liquid 20 that reactor tank 15 is provided with
Side be equipped with liquidometer 16, top side be equipped with liquid injection hole 18, the other side be equipped with gas collection connecting tube 19 one end, in reactor tank
15 bottom side is equipped with taphole 17；
The natural gas drying device includes gas-drying apparatus 21, desiccant 22, compression air inlet pipe 23, the gas dry
The inner cavity of device 21 is equipped with desiccant 22, and desiccant 22 uses calcium oxide particle, is equipped with pressure in the top left side of gas-drying apparatus 21
It is retracted tracheae 23, the bottom right of gas-drying apparatus 21 is connected to by gas collection connecting tube 19 with reactor tank 15；
Referring to attached drawing 3-5, multistage laborsaving gas compressing apparatus includes pressurization power cylinder 24, supercharge pipe 25, sealant
Circle 26, power piston 27, high pressure piston 28, high-pressure air feed pipe 29, high pressure outlet air pipe 30, high pressure form pipe 31 and two-stage supercharging is dynamic
Power cylinder 32, the pressurization power cylinder 24 are circle tube cylinder structure, pass through compression air inlet pipe in the left side of pressurization power cylinder 24
23 connection gas-drying apparatus 21, the right side of pressurization power cylinder 24 are fixedly connected with two-stage supercharging power cylinder 32, two-stage supercharging power cylinder
32 right side is fixedly connected with high pressure and forms pipe 31, and the outer end that high pressure forms pipe 31 passes through high-pressure pipe 43 and gas collection ball-and-seat 42
It is connected to compressed gas holding vessel 33；Power is installed in the inner cavity that the pressurization power cylinder 24 and two-stage supercharging power cylinder 32 form
Piston 27 installs high pressure piston 28 in 30 inner cavity of high pressure outlet air pipe；
It is equipped with supercharge pipe 25 in the outer exterior wall of the pressurization power cylinder 24, and is increased by the connection of high-pressure air feed pipe 29
Pressure power cylinder 24 and two-stage supercharging power cylinder 32 form pipe 31 by high pressure and are connected to two-stage supercharging power cylinder 32 and high pressure outlet air pipe
30。
Wherein, the internal diameter of the left end outer diameter of power piston 27 and pressurization power cylinder 24 cooperates, the right end of power piston 27
The major diameter fit of outer diameter and two-stage supercharging power cylinder 32, the right end of the power piston 27 are connected with high pressure piston 28, the height
The internal diameter of the outer diameter and high pressure outlet air pipe 30 of pressing piston 28 cooperates；One end of supercharge pipe 25 is connected to pressurization power cylinder 24
Left end outer wall, the other end are connected to the outer wall of pressurization 24 medium position of power cylinder；One end of high-pressure air feed pipe 29 is connected to pressurization
The right end outer wall of power cylinder 24, the other end are connected to the middle part outer wall of two-stage supercharging power cylinder 32；Above-mentioned high pressure forms pipe 31
One end is connected to the right end outer wall of two-stage supercharging power cylinder 32, and the other end is connected to the outer wall of high pressure outlet air pipe 30.
In addition, above-mentioned compressed gas holding vessel 33 is connected to chemical reaction equipment by being connected by circulation pipe 44 and safety valve 38
The bottom of reactor tank 15 forms the natural gas having more and is recycled.
Referring to attached drawing 1, oil recovery exhaust apparatus includes exhaust pipe 4, shut-off valve 5, Exhaust Pressure connector 6, sealed steel ball 7, determines
Position spring 8, retaining spring baffle ring 9, sealing piston 10, returning spring 11, seal cylinder sleeve 12, returning spring baffle ring 13, outlet list
Valve 14 is flowed, one end of the Exhaust Pressure connector 6 is connected to the casing 1 of well head by exhaust pipe 4, and the other end is flexibly connected close
Cylinder sleeve 12 is sealed, the upper end of Exhaust Pressure connector 6 is equipped with escape pipe, is connected to reactor tank 15 by escape pipe；The Exhaust Pressure
The inner cavity of connector 6 is equipped with the leakproof one-way valve being made of sealed steel ball 7, retaining spring 8, retaining spring baffle ring 9, and described
12 inner cavity of seal cylinder sleeve be equipped with sealing piston 10, returning spring 11 and returning spring baffle ring 13, returning spring baffle ring 13 with it is close
It seals between the outer retaining ring of piston 10 and installs returning spring 11, the outer end of the sealing piston 10 is connected to by drawstring and fixed pulley
The walking beam rear end of beam pumping unit drives the suction set of sealing piston 10 by the up and down motion of the walking beam of beam pumping unit
Then natural gas between pipe 1 and oil pipe 2 is transported in reactor tank 15 by the escape pipe of 6 upper end of Exhaust Pressure connector；Institute
The escape pipe installation outlet ball-and-seat 14 stated, avoids the natural gas reflux of discharge.
In addition, the numerical value being pressurized as needed, the size of the left end outer diameter for the power piston 27 that the present invention designs is high pressure
10 times of the size of the outer diameter of piston 28；The size of the right end outer diameter of the power piston 27 is the big of the outer diameter of high pressure piston 28
Small 6.6 times, specifically: the left end outer diameter 100mm of power piston 27, right end outer diameter are 66mm, and the outer diameter of high pressure piston is
10mm, so that pressure be enable to be significantly increased.
In addition, it is installed on check valve in gas-drying apparatus 21 and the compression air inlet pipe 23 being pressurized between power cylinder 24, in addition,
Another scheme is: being formed on pipe 31 in supercharge pipe 25, high-pressure air feed pipe 29, high pressure and installs check valve 46 respectively, avoided
Gas backflow when power piston and high pressure piston reply position.
Preferably, above-mentioned compression air inlet pipe 23 combines to be formed using PVC steel wire multiple tube.The structure of PVC steel wire multiple tube
It is: including transparent outer tube, steel wire floor, transparent inner tube, copper wire, steel wire floor is equipped between the transparent outer tube and transparent inner tube,
Be equipped between transparent outer tube and steel wire floor along entire transparent inner tube to copper wire.Above-mentioned steel wire floor is by 18 wire shufflings
It is made, the diameter of wire is 0.3mm, and mesh grid is made integrally to be all entirely embedded into the inside of transparent outer tube.Above-mentioned hose 7 it is transparent
The inner surface of outer tube is coated with antistatic material, and cooperates copper wire, and electrostatic is smoothly exported.
In addition, can place spring in order to increase persistently moving back and forth for power piston in C chamber and E chamber, increase its reply
Power, certainly, the resistance of the resistance of spring and natural gas and the power for being less than compression, in this way, just can be with propulsion power piston to the right
Side is mobile.Safety valve 38 includes regulating nut 39, compression spring 40, sealed steel ball 41, forms one-way flow, passes through regulating nut
39 adjustable cracking pressures.Safety valve 38 includes regulating nut 39, compression spring 40, sealed steel ball 41, forms one-way flow,
Pass through the adjustable cracking pressure of regulating nut 39.Pressure gauge 34, holding vessel safety valve 35 are installed on compressed gas holding vessel 33,
Gas vent 36 and deflation shut-off valve 37 are installed in the bottom of compressed gas holding vessel 33, pass through gas vent for compression for tank car
Natural gas releases.
A kind of application method for individual well casing gas sulphur removal pressurization storage device that the present invention mentions, comprising the following steps:
A, firstly, assembling individual well casing gas sulphur removal is pressurized storage device, oil recovery exhaust apparatus is mounted on beam type oil pumping
The lower section pedestal of machine fixes, and exhaust pipe 4 is connected to the annular space between casing 1 and oil pipe 2, and cut-off is installed on exhaust pipe 4
Valve 5；One end of drawstring is connected to the rear end of walking beam, and the other end of drawstring is connected to the sealing of oil recovery exhaust apparatus around fixed pulley
The outer end of piston 10；The escape pipe of the Exhaust Pressure connector 6 for the exhaust apparatus that recovers the oil is connected to the bottom of reactor tank 15 again, instead
The top side of tank 15 is answered to be connected to one end of the bottom of gas-drying apparatus 21 by gas collection connecting tube 19, gas-drying apparatus 21 is another
The top of one end connects the pressurization power cylinder 24 of multistage laborsaving gas compressing apparatus, multistage laborsaving gas by compressing air inlet pipe 23
The outlet of the high pressure outlet air pipe 30 of compression set right end is connected to compressed gas storage by high-pressure pipe 43 and gas collection ball-and-seat 42
One end of tank 33 is deposited, the other end of compressed gas holding vessel 33 is equipped with gas vent 36, and compressed gas holding vessel 33 is by being connected by circulation
Pipe 44 and safety valve 38 are connected to the reactor tank 15 of chemical reaction equipment；
B, secondly, beam pumping unit starting operation drives sealing piston 10 by drawstring with the up and down motion of walking beam
Piston motion is done, when sealing piston 10 moves out, the sealed steel ball 7 of Exhaust Pressure connector 6 is displaced outwardly, by oil pipe and casing
Between natural gas extraction, meanwhile, oil pumping polish rod 3 move up and down realize synchronous oil recovery, when sealing piston 10 pushes inwardly,
Sealed steel ball 7 seals up the air inlet of Exhaust Pressure connector 6 under the action of retaining spring 8, and by Exhaust Pressure connector inner cavity
Natural gas shift onto reactor tank 15, chemical reaction liquid 20 is housed, by chemical reaction liquid 20 and natural gas in reactor tank 15
Hydrogen sulfide, carbon dioxide reaction, then, remaining natural gas, which enters in gas-drying apparatus 21, to be dried, it is dry after gas
Body is transported to multistage laborsaving gas compressing apparatus by compressing air inlet pipe 23, after multistage laborsaving gas compressing apparatus pressurization
Natural gas be admitted to compressed gas holding vessel 33, the natural gas of compressed gas holding vessel 33 accesses tank car by gas vent 36 and transports；
And compressed gas holding vessel 33 pressure it is excessive when, be transported in reactor tank 15 by being connected by circulation pipe 44 and safety valve 38, continue
Circulation, avoids the pressure of compressed gas holding vessel 33 too big.
Chemical reaction in reactor tank is as follows: 2NaOH+H2S=Na2S+2H2O, CO2+NaOH=Na2CO3+H2O.To have
Harmful poison gas H2S is eliminated, and decreases CO2Content.And after the natural gas containing moisture enters in gas-drying apparatus, then with
CaO reacts, CaO+ H2O=Ca(OH)2 。
In addition, the pressurization for the laborsaving gas compressing apparatus of multistage that the present invention mentions is as follows:
A, compression air inlet pipe 23 is by natural gas by being transported to pressurization power cylinder at pressurization 24 left side air inlet A of power cylinder
24 inner cavities, the cavity that natural gas is transported to power piston 27 by supercharge pipe 25 and is pressurized between power cylinder 24, then pass through
High-pressure air feed pipe 29 is transported to the cavity between high pressure piston 28 and two-stage supercharging power cylinder 32, then defeated by high pressure formation pipe 31
It is sent in high pressure outlet air pipe 30, the natural gas pressure of each chamber is identical；The power piston 27 under the promotion of natural gas to
Right side movement, after at the B that the left end of power piston 27 is moved to pressurization power cylinder 24, meanwhile, the right end of power piston 27 moves
At the D for moving two-stage supercharging power cylinder 32, meanwhile, the right end of high pressure piston 28 is moved at the F of high pressure outlet air pipe 30, at this point,
28 left end of high pressure piston and pressurization power cylinder 24 form the first closed cavity, and pressure is held with moving right for high pressure piston 28
Continuous enhancing, and the speed of high pressure piston 28 continues slowing down；Meanwhile 28 left end of high pressure piston and two-stage supercharging power cylinder 32 are formed
The second closed cavity, pressure with high pressure piston 28 the lasting enhancing that moves right, and the speed of high pressure piston 28 continue exist
Slow down；Meanwhile the pressure of the third cavity between high pressure piston 28 and high pressure outlet air pipe 30 is in lasting increase, until gas collection list stream
Valve 42 is opened and by the natural gas transportation of third cavity to compressed gas holding vessel 33, and first time compression process is completed；
B, when the gas of the first cavity and the second cavity is compressed to power piston 27 and the stopping of high pressure piston 28 is transported to the right
When dynamic, under the action of the compressed gas of the first cavity and the second cavity, 28 counter motion of power piston 27 and high pressure piston, directly
It is moved to the left side at B to the left end of power piston 27, the right end of power piston 27 is moved to the left side at C, at this point, natural gas
Transfer passage is again turned on, and is compressed the natural gas of air inlet pipe 23 again by high pressure outlet air pipe 30 is transported at air inlet A, is being covered
Under the promotion for the natural gas that pipe comes out and the pulling force of PVC steel wire multiple tube, move back and forth power piston 27 and high pressure piston 28,
Natural gas compressing is constantly input to compressed gas holding vessel 33.
Embodiment 2, referring to attached drawing 6, difference from Example 1 of the present invention is: the increasing of multistage laborsaving gas compressing apparatus
Air inlet pipe 23 is compressed in the connection of the left side of pressure power cylinder 24, and above-mentioned compression air inlet pipe 23 uses dynamic sealing steel pipe and PVC steel wire
Multiple tube combines to be formed, and is connected and fixed by dynamic sealing steel pipe and the left part of power piston 27, and power piston 27 with
It is pressurized at the dynamic sealing steel pipe between the left end inner wall of power cylinder 24 and is equipped with multiple ventholes, that is, at A.Also, it is described
The inner wall of the left end of the left end and pressurization power cylinder 24 of power piston 27 is equipped with limited block 47, and the inlet end of supercharge pipe 25
Position move right.
The PVC steel wire multiple tube makes PVC steel wire multiple tube be connected to dynamic sealing steel pipe by setting fixed pulley 45, and
Through-hole of the dynamic sealing steel pipe then with pressurization 24 left side of power cylinder forms dynamic sealing.
Application method difference from Example 1 of the invention is: the pressurization of multistage laborsaving gas compressing apparatus is not
Together, it specifically includes as follows:
A, it compresses the PVC steel wire multiple tube of air inlet pipe 23 to connect around fixed pulley 45 with dynamic sealing steel pipe, dynamic sealing steel pipe
It is moved along the through hole of pressurization 24 left side of power cylinder, natural gas is transported to pressurization power by the venthole of dynamic sealing steel pipe
24 inner cavity of cylinder, then, natural gas pass through the sky that supercharge pipe 25 is transported to power piston 27 and is pressurized between power cylinder 24 again
Chamber, then the cavity between high pressure piston 28 and two-stage supercharging power cylinder 32 is transported to by high-pressure air feed pipe 29, then pass through high pressure
It forms pipe 31 to be transported in high pressure outlet air pipe 30, the natural gas pressure of each chamber is identical；The power piston 27 is in natural gas
Promotion under move to the right, when the left end of power piston 27 be moved to pressurization power cylinder 24 B at after, meanwhile, power piston
27 right end is moved at the D of two-stage supercharging power cylinder 32, meanwhile, the right end of high pressure piston 28 is moved to high pressure outlet air pipe 30
At F, at this point, 28 left end of high pressure piston and pressurization power cylinder 24 form the first closed cavity, pressure is with high pressure piston 28
Move right lasting enhancing, and the speed of high pressure piston 28 continues slowing down；Meanwhile 28 left end of high pressure piston and two-stage supercharging are dynamic
Power cylinder 32 forms the second closed cavity, move right lasting enhancing of the pressure with high pressure piston 28, and high pressure piston 28
Speed continues slowing down；Meanwhile the pressure of the third cavity between high pressure piston 28 and high pressure outlet air pipe 30 is in lasting increase, directly
To the opening of gas collection ball-and-seat 42 and by the natural gas transportation of third cavity to compressed gas holding vessel 33, first time compression process is complete
At；
B, when the gas of the first cavity and the second cavity is compressed to power piston 27 and the stopping of high pressure piston 28 is transported to the right
When dynamic, under the action of the compressed gas of the first cavity and the second cavity, 28 counter motion of power piston 27 and high pressure piston, directly
It is moved to the left side at B, and the stop motion before limited block 47 to the left end of power piston 27, the right end of power piston 27 moves
The left side at C is moved, at this point, natural gas transportation channel is again turned on, compresses the natural gas of air inlet pipe 23 again by dynamic sealing
It is transported to high pressure outlet air pipe 30 at multiple venthole A of steel pipe, under the promotion for the natural gas that casing comes out, makes power piston 27
It is moved back and forth with high pressure piston 28, natural gas compressing is constantly input to compressed gas holding vessel 33.
Wherein, after the walking beam of beam pumping unit of the pulling force of the movement of above-mentioned PVC steel wire multiple tube in Fig. 2
Second drawstring is connected at compression air inlet pipe 23 by end by design movable pulley and second drawstring, drives compression air inlet pipe
23 movements, so that dynamic sealing steel pipe of the invention be driven to do movement back and forth, dynamic sealing steel pipe is then moved with power piston 27.
Embodiment 3, referring to attached drawing 10, the technical solution difference from Example 2 that the present invention mentions is: will compress air inlet
One end of pipe 23 is connected at gas-drying apparatus 21, and the other end is connected at the B of pressurization power cylinder 24, by a left side for power piston 27
The outer end of end and dynamic sealing axis connection, dynamic sealing axis is connected by wirerope, and wirerope is connected to walking beam around fixed pulley
The walking beam rear end of formula pumping unit moves so that walking beam is moved up and down at any time with wirerope, and then drives wirerope with dynamic
Axis movement is sealed, to give the external force of power piston 27.
Application method difference from Example 1 of the invention is: the pressurization of multistage laborsaving gas compressing apparatus is not
Together, it specifically includes as follows:
A, compression air inlet pipe 23 is directly connected at the B of pressurization power cylinder 24, and natural gas is made to be delivered directly to power piston
Cavity between 27 and pressurization power cylinder 24；Under the movement of beam-pumping unit, drives wirerope to haul the movement of dynamic sealing axis, move
Sealing axis hauls the movement of power piston 27, to apply external force to power piston；Natural gas passes through the conveying of high-pressure air feed pipe 29 again
Cavity between high pressure piston 28 and two-stage supercharging power cylinder 32, then pipe 31 is formed by high pressure and is transported to high pressure outlet air pipe 30
In, the natural gas pressure of each chamber is identical；The power piston 27 moves to the right under the promotion of natural gas, when power is living
After the left end of plug 27 is moved at the B of pressurization power cylinder 24, meanwhile, the right end of power piston 27 is moved to two-stage supercharging power cylinder
At 32 D, meanwhile, the right end of high pressure piston 28 is moved at the F of high pressure outlet air pipe 30, at this point, 28 left end of high pressure piston and increasing
Pressure power cylinder 24 forms the first closed cavity, move right lasting enhancing of the pressure with high pressure piston 28, and high pressure piston
28 speed continues slowing down；Meanwhile 28 left end of high pressure piston and two-stage supercharging power cylinder 32 form the second closed cavity, press
By force with the lasting enhancing that moves right of high pressure piston 28, and the speed of high pressure piston 28 continues slowing down；Meanwhile high pressure piston
The pressure of third cavity between 28 and high pressure outlet air pipe 30 is in lasting increase, until gas collection ball-and-seat 42 is opened and by third sky
The natural gas transportation of chamber to compressed gas holding vessel 33, first time compression process is completed；
B, when the gas of the first cavity and the second cavity is compressed to power piston 27 and the stopping of high pressure piston 28 is transported to the right
When dynamic, under the action of the compressed gas of the first cavity and the second cavity, 28 counter motion of power piston 27 and high pressure piston, directly
It is moved to the left side at B to the left end of power piston 27, the right end of power piston 27 is moved to the left side at C, at this point, natural gas
Transfer passage is again turned on, and the natural gas of compression air inlet pipe 23 is again fed to C, E and F chamber, in the natural gas that casing comes out
Under the external force for pushing the wirerope driven with walking beam, move back and forth power piston 27 and high pressure piston 28, constantly natural
Air pressure contracting is input to compressed gas holding vessel 33.
The above, is only part preferred embodiment of the invention, and anyone skilled in the art may benefit
Equivalent technical solution is modified or is revised as with the technical solution of above-mentioned elaboration.Therefore, technology according to the present invention
Any simple modification or substitute equivalents that scheme is carried out, belong to the greatest extent the scope of protection of present invention.
Claims (1)
1. a kind of application method of individual well casing gas sulphur removal pressurization storage device, it is characterized in that: the following steps are included:
(a), firstly, assembling individual well casing gas sulphur removal is pressurized storage device, oil recovery exhaust apparatus is mounted on beam pumping unit
Lower section pedestal fix, exhaust pipe (4) is connected to the annular space between casing (1) and oil pipe (2), and pacify on exhaust pipe (4)
It fills shut-off valve (5)；One end of drawstring is connected to the rear end of walking beam, and the other end of drawstring is connected to oil recovery exhaust dress around fixed pulley
The outer end for the sealing piston (10) set；The escape pipe of the Exhaust Pressure connector (6) for the exhaust apparatus that recovers the oil is connected to reaction again
The bottom of tank (15), the top side of reactor tank (15) are connected to the bottom of gas-drying apparatus (21) by gas collection connecting tube (19)
One end, the top of gas-drying apparatus (21) other end passes through the multistage laborsaving gas compressing apparatus of compression air inlet pipe (23) connection
It is pressurized power cylinder (24), the outlet of the high pressure outlet air pipe (30) of multistage laborsaving gas compressing apparatus right end passes through high-pressure pipe
(43) and gas collection ball-and-seat (42) is connected to one end of compressed gas holding vessel (33), and the other end of compressed gas holding vessel (33) is equipped with
Gas vent (36), and compressed gas holding vessel (33) is connected to chemical reaction equipment by being connected by circulation pipe (44) and safety valve (38)
Reactor tank (15)；
(b), secondly, beam pumping unit starting operation drives sealing piston (10) by drawstring with the up and down motion of walking beam
Piston motion is done, when sealing piston (10) moves out, the sealed steel ball (7) of Exhaust Pressure connector (6) is displaced outwardly, by oil pipe
Between casing natural gas extraction, meanwhile, oil pumping polish rod (3) move up and down realize synchronous oil recovery, when sealing piston (10) to
When inside pushes, sealed steel ball (7) seals up the air inlet of Exhaust Pressure connector (6) under the action of retaining spring (8), and will
The natural gas of Exhaust Pressure connector inner cavity is shifted onto reactor tank (15), and chemical reaction liquid (20) are housed in reactor tank (15), are passed through
Hydrogen sulfide, carbon dioxide reaction in chemical reaction liquid (20) and natural gas, then, remaining natural gas enters gas-drying apparatus
(21) it is dried in, the gas after drying is transported to multistage laborsaving gas compressing apparatus, warp by compressing air inlet pipe (23)
The multistage pressurized natural gas of body compression set of saving the strength is crossed to be admitted to compressed gas holding vessel (33), compressed gas holding vessel (33)
Natural gas accesses tank car by gas vent (36) and transports；And compressed gas holding vessel (33) pressure it is excessive when, by being connected by circulation
Pipe (44) and safety valve (38) are transported in reactor tank (15), are continued cycling through, are avoided the pressure of compressed gas holding vessel (33) too big.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910166527.4A CN109882735A (en) | 2018-06-19 | 2018-06-19 | The application method of oil field individual well production auxiliary device |
| CN201910163907.2A CN109723974A (en) | 2018-06-19 | 2018-06-19 | A kind of application method of oil field individual well production auxiliary device |
| CN201810627483.6A CN109025909B (en) | 2018-06-19 | 2018-06-19 | The application method of individual well casing gas sulphur removal pressurization storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810627483.6A CN109025909B (en) | 2018-06-19 | 2018-06-19 | The application method of individual well casing gas sulphur removal pressurization storage device |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910166527.4A Division CN109882735A (en) | 2018-06-19 | 2018-06-19 | The application method of oil field individual well production auxiliary device |
| CN201910163907.2A Division CN109723974A (en) | 2018-06-19 | 2018-06-19 | A kind of application method of oil field individual well production auxiliary device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109025909A CN109025909A (en) | 2018-12-18 |
| CN109025909B true CN109025909B (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910163907.2A Withdrawn CN109723974A (en) | 2018-06-19 | 2018-06-19 | A kind of application method of oil field individual well production auxiliary device |
| CN201910166527.4A Withdrawn CN109882735A (en) | 2018-06-19 | 2018-06-19 | The application method of oil field individual well production auxiliary device |
| CN201810627483.6A Active CN109025909B (en) | 2018-06-19 | 2018-06-19 | The application method of individual well casing gas sulphur removal pressurization storage device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910163907.2A Withdrawn CN109723974A (en) | 2018-06-19 | 2018-06-19 | A kind of application method of oil field individual well production auxiliary device |
| CN201910166527.4A Withdrawn CN109882735A (en) | 2018-06-19 | 2018-06-19 | The application method of oil field individual well production auxiliary device |
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| CN (3) | CN109723974A (en) |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU931961A1 (en) * | 1980-12-15 | 1982-05-30 | Башкирский государственный научно-исследовательский и проектный институт нефтяной промышленности | Well sucker rod pumping unit |
| CN2051668U (en) * | 1989-04-24 | 1990-01-24 | 兰州石油机械研究所 | Pressure reducing and production increasing device for oil pumping well casing |
| JP2734722B2 (en) * | 1990-02-20 | 1998-04-02 | 三菱マテリアル株式会社 | Geothermal well two-phase fluid separation and sampling device |
| CN2483504Y (en) * | 2001-05-18 | 2002-03-27 | 张福君 | Apparatus for obtg. liquid or gas from well in oil-field |
| CN1920249A (en) * | 2006-09-04 | 2007-02-28 | 王达胜 | Small-scaled high-pressure natural gas well processing and utilization system |
| CN101235709B (en) * | 2007-02-02 | 2012-05-23 | 中国石油化工股份有限公司 | Petroleum engineering circulating gas regeneration method and its special equipment |
| JP2008291836A (en) * | 2007-04-26 | 2008-12-04 | Anest Iwata Corp | Multi-stage gas compressing apparatus |
| CN102297336A (en) * | 2011-07-29 | 2011-12-28 | 西安交通大学苏州研究院 | Multistage compressing and recovering device for natural gas in oil-well casing of oil field |
| CN102533369B (en) * | 2012-01-13 | 2013-08-21 | 北京昊海天际科技有限公司 | Process method for methane purification |
| CN203050641U (en) * | 2013-01-15 | 2013-07-10 | 庄冰松 | Drivepipe gas automatic recovery device |
| CN103256201B (en) * | 2013-04-09 | 2016-04-27 | 北京康斯特仪表科技股份有限公司 | Coaxial motive liquid booster body and gas boosting method in the same way |
| CN204098883U (en) * | 2014-09-10 | 2015-01-14 | 中国石油化工股份有限公司 | Oil well casing pipe gas pressurized |
| CN204182277U (en) * | 2014-10-10 | 2015-03-04 | 中国石油天然气集团公司 | Well head associated gas hydrogen sulphide removing device |
| CN204186554U (en) * | 2014-11-07 | 2015-03-04 | 杜昊 | For the bushing evacuating device of beam pumping unit |
| CN206091937U (en) * | 2016-10-17 | 2017-04-12 | 河北耀一节能设备制造有限责任公司 | Hang rope formula sleeve pipe gas pressure boost recovery unit |
| CN107327287A (en) * | 2017-08-10 | 2017-11-07 | 鞍山力邦科技有限公司 | A kind of well casing gas separation, purification, supercharging recovery system and method |
| CN207245681U (en) * | 2017-08-10 | 2018-04-17 | 鞍山力邦科技有限公司 | A kind of well casing gas separation, purification, supercharging recovery system |
-
2018
- 2018-06-19 CN CN201910163907.2A patent/CN109723974A/en not_active Withdrawn
- 2018-06-19 CN CN201910166527.4A patent/CN109882735A/en not_active Withdrawn
- 2018-06-19 CN CN201810627483.6A patent/CN109025909B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109723974A (en) | 2019-05-07 |
| CN109882735A (en) | 2019-06-14 |
| CN109025909A (en) | 2018-12-18 |
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