CN105257256B - Underground gas production tubing string and gas production method - Google Patents
Underground gas production tubing string and gas production method Download PDFInfo
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- CN105257256B CN105257256B CN201510729522.XA CN201510729522A CN105257256B CN 105257256 B CN105257256 B CN 105257256B CN 201510729522 A CN201510729522 A CN 201510729522A CN 105257256 B CN105257256 B CN 105257256B
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Abstract
The present invention relates to underground gas production tubing string and gas production method, with the speed column and dual channel formula jet pump connected by the first direct-connected joint, and power gas import corresponding with dual channel formula jet pump and underground hydrops import, the other end of dual channel formula jet pump is connected with suction pipe by the second direct-connected joint, and the external diameter of speed column, dual channel formula jet pump and suction pipe is consistent.The underground gas production tubing string and gas production method of the present invention, effectively the gas well big to low-voltage and low-yield, aquifer yield it can carry out efficient water pumping gas production, the recovery percent of payzone especially can be significantly improved to the mining of commingling production, lower floor's watered-out well and horizontal well, gas well yield and pressure decline speed are obviously slow down, effectively extends gas well stable production period.
Description
Technical field
The present invention relates to the apparatus and method of natural gas well water pumping gas production, are especially underground gas production tubing string and gas production side
Method.
Background technology
In the engineer operation of natural gas well water pumping gas production, when the gas well of shallow-middle gas reservoir enters low-voltage and low-yield development period
When, its production capacity is generally low, stable production period is short, and the stable yields for improving periods of low pressure is to improve the key of recovery ratio, particularly with gas-water ratio
Gas well low, aquifer yield is big, requirements at the higher level are proposed to discharge opeing；For the big gas of the high pressure of deep layer gas reservoir, low yield, aquifer yield
Well, because the shaft bottom section production capacity gone into operation initial stage does not reach the requirement of liquid in lifting well, cause gas and water after more mouthfuls of flowing wells operations
Yield, well head pressure are successively decreased too fast, and oil jacket pressure difference is big, and shaft bottom hydrops is serious, and the discharge opeing problem in production process will highlight；Mesh
Preceding horizontal well has become the main development scheme of gas reservoir, and production water risk is big, and special casing programme often influences gas well discharge opeing,
How solving the drainage problem of horizontal well will be the problem being badly in need of capturing.
Conventional mining measure mainly includes the modes such as bubble row, speed column water pumping gas production, gaslift.For low yield, production water
Big gas well is measured, steeps the DeGrain of row, hydrops degree can only be alleviated to horizontal well, can not thorough discharge opeing；Speed column by
Big section slug is easily formed in caliber is smaller, fluid can be started and risk be present, can not realize that horizontal segment hydrops is arranged to horizontal well
Go out, and the discharge opeing effect in mining later stage is deteriorated.Gaslift mining is only capable of realizing hydrops lifting more than circulation slide sleeve, can not realize
Horizontal segment hydrops is discharged；For low-voltage and low-yield gas well, hydraulic jet pump, gas accelerator are the mining side using external energy
Formula, liquid need to be taken to ground using corollary equipment infusion high-pressure medium, after the termination of pumping of ground, hydraulic jet pump is in underground because lacking
Without possessing self-excitation function, shaft bottom will hydrops again at power water source；The self-excitation function of gas accelerator is limited, after gaslift once
Face stops infusion high pressure gas, and there is again the risk of hydrops in shaft bottom, and this is due to that pipe aperture is far above speed column internal diameter, required
Critical liquid carrying flow rate it is high, and the strong atomizing effect of the pump has certain effect distance, thus gas accelerator can only be to gas
The water gas well fewer than high, aquifer yield extends the flush stage of gas well.
The content of the invention
It is existing big to low-voltage and low-yield, aquifer yield to overcome the invention provides a kind of underground gas production tubing string and gas production method
Gas well mining measure deficiency, carry out a kind of application model flexibly, effectively start fluid, with it is water-based can good water pumping gas production side
Formula, so that underground liquid level position rapid decrease, payzone are completely exposed, payzone recovery percent is improved, and effectively slow down gas well production
Amount and pressure decline speed, further extend gas well stable production period.
The underground gas production tubing string of the present invention, there is the speed column connected by the first direct-connected joint and dual channel formula jet
Pump, and power gas import corresponding with dual channel formula jet pump and underground hydrops import, the other end of dual channel formula jet pump
Suction pipe is connected with by the second direct-connected joint, and the external diameter of speed column, dual channel formula jet pump and suction pipe is consistent.By institute
Speed column, dual channel formula jet pump and the suction pipe stated sequentially are connected from top to bottom by the first direct-connected joint and the second direct-connected joint
Connect, speed column can be same or like with the structure and existing structure of suction pipe, the structure of dual channel formula jet pump can with it is existing
It is similar, its critical piece includes nozzle, venturi and anemostat etc., the groundwork of different types of dual channel formula jet pump
Part is much the same.Dual channel formula jet pump was once used to be used as power source pumping using ground infusion fluid although having in the prior art
Underground hydrops, such as hydraulic jet pump, gas accelerator etc., but be the production scheme by external energy.The present invention utilizes
The unique operation principle of dual channel formula jet pump, in combination with gas stringer itself features, go out one kind without outer
Portion's power source can swabbing well bottom hydrops automatically it is every, using the natural gas in gas well from output to pit shaft during itself deposit
In the principle of pressure pumping effect, jet pumping function is realized.When dual channel formula jet pump is under the premise of external diameter is less, it is desirable to
The flow diameter excessively of dual channel (dynamic air-flow road, hydrops runner) in it is sufficiently large, and the minimum wall thickness (MINI W.) foot between two runners
Enough thickness, just disclosure satisfy that the erosion requirement of dual channel.Can by milling flow path groove, shape the processing modes such as runner meet with
Upper requirement.
When speed column water pumping gas production is used during for the gas well low to gas liquid ratio in traditional approach, aquifer yield is big, tradition
Equipment easily forms big section slug in the presence of single channel air-flow can take when liquid stream enters speed column, air-flow is difficult to be distributed to section
In plug, cause flow starting efficiency it is low, once the slug in speed column is long, back pressure is excessive, and payzone will be caused to kill；Fluid
After startup, general discharge opeing at initial stage effect is preferable, but with the reduction of yield, pressure, the big section slug in the section speed column of shaft bottom
The small droplet of diameter can not be broken for, flowing is easy to be in slug flow flow pattern, and the lifting efficiency of shaft bottom hydrops reduces, and slippage amount is not
Disconnected increase, the increase of liquid difficulty is taken, aquifer yield declines, as the increase of shaft bottom hydrops, back pressure rise, by under the continuation for causing yield
Drop, or even stop production..The dual channel formula jet pump of the underground gas production tubing string of the present invention is directly applied in speed column, by double
The lifting of shaft bottom hydrops is converted into the lifting of spray by the pumping of flow channel type jet pump and atomizing so that it is certainly double that gas takes liquid
Flow channel type jet pump is exported to the flow pattern for being able to that " whole spray " is presented in the whole flow process of well head, effectively realizes low
The blowing of lifting and gas well of the big gas well of production, aquifer yield to shaft bottom hydrops.Due to the suction of connection below dual channel formula jet pump
The internal diameter of pipe is much smaller than the internal diameter of the oil pipe, and its hydrops flow is lower under certain pumping power, is more beneficial for taking liquid.In double fluid
Under dual channel (the dynamic air-flow road, hydrops runner) effect of road formula jet pump, nozzle that power gas passes through dual channel formula jet pump
When pressure energy is converted into the kinetic energy of high speed a fluid stream, start dynamic air-flow and move, underground hydrops is in the synergy such as pumping and atomization
Under, the hydrops breakup of drop is the small droplet of diameter, and gas-liquid is sufficiently mixed, is so provided with power gas and preferably takes liquid energy
Power, so as to the hydrops flowing in effectively start speed column.Because the critical production capacity needed for speed column water pumping gas production is far below
The critical value of oil pipe, under certain production capacity, the power gas in speed column can obtain higher flow velocity, can effectively prevent through atomization
The hydrops droplet that the diameter of effect is small accumulates the drop being relatively large in diameter again, the atomizing effect of hydrops is continued, this
Sample is exported in the flow process of " whole spray " of well head from dual channel formula jet pump, in the case where stratum energy is constant,
Obviously reduce gravity of the lift energy in the hydrops lifting process of shaft bottom and slip and lose, while also sufficiently lower
The big gas well of low yield, aquifer yield is taken required pressed along journey during liquid in oil pipe and consumed, and effectively realizes gas stringer to shaft bottom hydrops
Lifting and gas well blowing.
Meanwhile when for high pressure, low yield, aquifer yield big gas well, not only from the tubing string with dual channel formula jet pump
Be exported to the flow pattern that " whole spray " is obtained in the whole flow process of well head, and pass through the nozzle of dual channel formula jet pump
The larger pressure drop that upstream and downstream obtain, downhole choke can be effectively carried out while water pumping gas production, reduces well head pressure, favorably
In the safety in production and production management of gas well.Such gas well can also use movable pair that can be directly engaging on oil pipe
Flow channel type jet pump, the ratio between the nozzle downstream of dual channel formula jet pump, upstream pressure can reach 0.546:1, therefore air-flow passes through
Critical flow conditions are up to after nozzle, the maximum pressure general who has surrendered for acting on nozzle upstream and downstream reaches maximum, and gaseous phase volume is swollen
Swollen, gas segment elongation, the atomizing effect of hydrops is set to continue, water production just efficiently can be taken liquid extremely by same relatively low production capacity
Ground.By the reliability design of movable self-excitation pump and kit, by well while being achieved gas well downhole choke
Hydrops spray carries out well, can not only effectively reduce speed column technical costs, and saving includes coiled tubing tubing expense and existed
Interior holistic cost, well head pressure can be also farthest reduced, be very beneficial for the safety in production and production management of gas well.
Therefore, the speed column for connecting dual channel formula jet pump can make full use of gas reservoir self-energy, it is not necessary to extra
Power can just overcome the shortcomings of that gas reservoir is as power source problem in gas well during to shaft bottom hydrops draining, in dual channel jet pump
Swabbing action and atomizing are produced to shaft bottom hydrops under dual channel effect, lifted shaft bottom hydrops with reference to the effect of speed column
To well head, the needs of the liquid discharging gas producing of low-voltage and low-yield gas well low to gas-water ratio, that aquifer yield is big are just met with this.
Further, the liquid feeding end of suction pipe is connected with the screen casing provided with the underground hydrops import.Screen casing is at present in well
A kind of typical filter equipment in lower gas production tubing string, such as cutting seam sieve tube, drilling screen casing etc., its main function is exactly the wells such as sand control
Lower foul flows into runner.Underground hydrops is entered by the underground hydrops import on screen casing, is penetrated after screen casing filters into dual channel
Flow pump.
The screen construction of the more excellent structure of one of which includes the screen casing outer barrel that sealing ring is provided with tip side, screen casing outer barrel
The movable fuse that can be axially moved along outer barrel is inside equipped with, the screen casing track spacing to movable fuse is additionally provided with screen casing outer barrel
Pin, and the screen casing shear pin that can be cut by movable fuse.The diverse location that is in by movable fuse realizes screen casing
Switching function.After fluid is filled in speed column seat extension, suction pipe, the movable fuse of screen casing is set to be cut after building the pressure to certain pressure
Disconnected screen casing shear pin, movable fuse are descending.Screen casing track pin forces the rail groove on movable fuse to rotate, and makes movable fuse
Descending so as to open the runner of screen casing, at this moment screen casing is in open mode in place, prevents the underground such as sand foul from flowing into stream
Road.Under the upper top power effect of well internally-powered gas, movable fuse is up, until screen casing track pin card hangs over slide core sub-track
At the limited step of groove, so just it can effectively prevent the runner of screen casing from being closed in the case of accident.
Specifically, described dual channel formula jet pump includes the jet pump outer barrel provided with the power gas import, and at it
The interior upper mandrel being connected by nozzle and lower mandrel, wherein upper mandrel includes expanding pipe portion and the equal diameter pipe of through connection
Portion, one end of its intermediate diameter pipe portion are connected with the nozzle, and power gas corresponding with power gas import is provided with lower mandrel
Runner, and mutually insulated between lower mandrel and jet pump outer barrel and by sealing structure and the dynamic air-flow road with
Hydrops runner corresponding to the underground hydrops import, jet pump shear pin is additionally provided with the downstream of lower mandrel and located at lower core
Axle is axially moved the jet pump track pin on track.Because dual channel formula jet pump external diameter is small, limit dynamic air-flow road and
The processing of hydrops runner, in order to facilitate the processing and manufacturing of small size parts, led to using the flowing that fluid is collectively forming after assembling
The design method in road.Distinguish milling flow path groove by using in the inner headed face of jet pump outer barrel and the periphery of lower mandrel, so fill
The hydrops runner of annular space is just formd after matching somebody with somebody between jet pump outer barrel and lower mandrel.Between lower mandrel and jet pump outer barrel
Sealing structure can be O-ring seals, to insulate dynamic air-flow road and hydrops runner, it is ensured that what two runners were opened successively
Front and rear, two runners can realize complete packing.
Present invention also offers a kind of method of underground gas production, is by above-mentioned underground gas production tubing string tripping in gas recovery well
Afterwards, the lower end of the dual channel formula jet pump of underground gas production tubing string is made to be located on the upper payzone of gas recovery well, underground gas production tubing string
Suction pipe lower end is located under lower payzone.If an only payzone, the lower end of dual channel formula jet pump is all placed in suction pipe
Under the payzone.Because dual channel formula jet pump directly acts on shaft bottom hydrops, make underground hydrops under the effect of power gas by inhaling
Pipe sucks, and servo-actuated strength enters dual channel formula jet pump and is fractured into droplet and is mutually mixed in the lump.The underground of suction pipe suction
Hydrops is under the dual channel effect of dual channel formula jet pump, and pressure energy by being converted into by power gas during the nozzle of underground gas production tubing string
The kinetic energy of high-speed jet, under swabbing action caused by injection drop, underground hydrops is sucked by suction pipe runner after filtering,
High-speed jet and the sheared edge interlayer that a kind of reinforcing is formed on the interface of the shaft bottom hydrops of suction, on the boundary layer successively
Vortex is produced, liquid rolls into a ball the blending constantly into air-flow outside boundary layer, makes the hydrops breakup of drop for the small droplet of diameter, so as to realize
Lifting medium is from liquid to gaseous transformation, and most shaft bottom hydrops are present in gas in the form of droplet, in double fluid
Flow effectively the hydrops in speed column under the pumping of road formula jet pump and atomizing, then pass through speed column
The atomizing effect of hydrops is continued, after gas-liquid is sufficiently mixed, shaft bottom is realized under the swabbing action of dual channel formula jet pump
The flowing of hydrops and the blowing for realizing gas well gas.Thus the appearance of slug flow equal flow type in lifting process is just avoided, and whole
It is individual rise lift during need not be extraneous extra power, take full advantage of gas reservoir self-energy and carry out efficient water pumping gas production work
Industry, the water pumping gas production efficiency for the gas stringer that gas-water ratio is low, aquifer yield is big is greatly improved.This method can be applied to shaft bottom
There is the producing well of hydrops, only need to be by the tripping in directly with pressure of underground gas production tubing string if shaft bottom hydrops is not serious；If shaft bottom hydrops is tight
Weight, gaslift can be coordinated to bring back to life payzone after the tripping in pressure of underground gas production tubing string.Simultaneously as suction pipe directly acts on shaft bottom hydrops,
It is quick and payzone is greatly improved so that the liquid level position rapid decrease of hydrops, reduce shaft bottom back pressure, payzone and be completely exposed
Recovery percent, it effectively slow down gas well yield and pressure decline speed.The present invention gas production tubing string and gas production method to payzone without
Pollution, and to payzone strong adaptability, exclude also opened stratum aerogenesis microscopic checks while wellbore effusion, increased substantially
Single well productivity, it will be apparent that extend gas well stable production period.
When further, to horizontal well gas production, by the dual channel formula jet pump tripping in of described underground gas production tubing string to making
Oblique section hole angle is the well section position in the range of 40 °~60 °, can so effectively improve band of the self-excitation pump in underground in net horizontal section
Water-based energy, make the liquid level position rapid decrease of underground hydrops, while pipette tip is stretched into the minimum point progress level of horizontal well
The discharge of section hydrops.The strong atomizing effect of dual channel formula jet pump and the dual work of speed column in underground gas production tubing string
Under, the flow effect in the range of 40 °~60 ° most thick of inclination section of hydrops liquid film is effectively improved.
Specifically, behind underground gas production tubing string tripping in the position, underground gas production is hung using speed column wellhead assembly seat
Tubing string is positioned.
The underground gas production tubing string and gas production method of the present invention, effectively it can enter the gas well big to low-voltage and low-yield, aquifer yield
The efficient water pumping gas production of row, especially can significantly improve the recovery percent of payzone to the mining of commingling production, lower floor's watered-out well, non-
Often significantly extend gas well stable production period.
Embodiment with reference to embodiments, the above of the present invention is described in further detail again.
But the scope that this should not be interpreted as to the above-mentioned theme of the present invention is only limitted to following example.Think not departing from the above-mentioned technology of the present invention
In the case of thinking, the various replacements or change made according to ordinary skill knowledge and customary means, this hair all should be included in
In bright scope.
Brief description of the drawings
Fig. 1 is the axial section structural representation of gas production tubing string in underground of the present invention.
Fig. 2 is the cross-sectional view of screen casing in Fig. 1.
Fig. 3 is the cross-sectional view of dual channel formula jet pump in Fig. 1.
Embodiment
Gas production tubing string in underground of the present invention as shown in Figure 1, there is the speed column 3 that is connected by the first direct-connected joint 4 and double
Flow channel type jet pump 5.The other end of dual channel formula jet pump 5 is connected with suction pipe 7 by the second direct-connected joint 6, and suction pipe is directly made
For shaft bottom hydrops, it is preferably good with water-based energy to have.Screen casing 8 is also associated with the lower end of suction pipe 7.It is the speed column 3, double
Flow channel type jet pump 5 is consistent with the external diameter of suction pipe 7.During practical application, oil pipe 1 is also equipped with outside underground gas production tubing string.
Screen casing 8 as shown in Figure 2, include the screen casing outer barrel 81 that sealing ring 83 is provided with tip side, on screen casing outer barrel 81
Provided with underground hydrops import 86.The movable fuse 82 that can be axially moved along outer barrel 81 is equipped with screen casing outer barrel 81, outside screen casing
The screen casing track pin 84 spacing to movable fuse 82 is additionally provided with cylinder 81, and can be sheared by the screen casing that movable fuse 82 is cut
Pin 85.The switching function that diverse location realizes screen casing 8 is in by movable fuse 82.Screen casing shearing is cut in movable fuse 82
Before pin 85, screen casing 8 is closed；After fluid is filled in the suction pipe 7 of underground gas production tubing string, the activity fuse 82 that builds the pressure arrives
Certain pressure is after cutting screen casing shear pin 85, and promotion activity fuse 82 is descending, and screen casing track pin 84 forces slide core
Son 82 on rail groove rotation, movable fuse 82 it is descending in place after, screen casing 8 is just in open mode, prevents that the undergrounds such as sand are dirty
Logistics air stream enter runner；Movable fuse 82 is spacing by screen casing track pin 84, prevents screen casing 8 from accidental switching off.
As shown in figure 3, the dual channel formula jet pump 5 used in the present embodiment, includes penetrating provided with power gas import 512
Pump outer barrel 51 is flowed, with the upper mandrel 52 and lower mandrel 54 being connected in it by nozzle 53.Jet pump outer barrel 51 uses Φ
38.1mm × 4.45mm speed column pipe nipple is directly process, and upper mandrel 52 includes the expanding pipe portion of through connection and waited
Diameter pipe portion, one end of its intermediate diameter pipe portion are connected with the nozzle 53.It is provided with to enter with the power gas in lower mandrel 54
Dynamic air-flow road 55 corresponding to mouthfuls 512, and between lower mandrel 54 and jet pump outer barrel 51 and pass through the close of O-ring seals
Seal structure 56 mutually insulating with the 86 corresponding hydrops runner 57 of underground hydrops import with the dynamic air-flow road 55, under
Jet pump shear pin 58 is additionally provided with the downstream of mandrel 54 and is axially moved the jet pump track on track located at lower mandrel 54
Pin 59.Copper packing 510 is mounted between nozzle 53 and lower mandrel 54, to seal the dynamic air-flow road 55 of the upstream of nozzle 53.
Larynx mouth between nozzle 53 and upper mandrel 52 is adjusted away from the number of active coils that screw thread is then engaged by both, and regulation is revolved afterwards in place
Enter retraction pin 511 and fix upper mandrel 52.When using Φ 38.1mm and following specification speed column 3, penetrated in dual channel formula
Flow pump 5 external diameter it is sufficiently small on the premise of, it is desirable to the excessively stream of dual channel (dynamic air-flow road 55 and hydrops runner 57) therein is straight
Footpath is sufficiently large, and corresponding minimum wall thickness (MINI W.) is needed between two runners, disclosure satisfy that the erosion requirement of dual channel.By adopting
With milling flow path groove, the processing modes such as runner are shaped, are just formd between jet pump outer barrel 51 and lower mandrel 54 after assembling
The hydrops runner 57 of annular space.Requirements above can be met.All pass through installation between dynamic air-flow road 55 and hydrops runner 57
The sealing structures 56 of O-ring seals insulated, while also insulated the hydrops runner 57 formed after assembling.It is in addition, whole
Mandrel (including upper mandrel 52, nozzle 53 and lower mandrel 54) can be axially movable, is in diverse location by it and realizes dual channel formula
The switching function of jet pump 5.After screen casing 8 is in open mode, infusion discharge capacity is improved, when the chock pressure difference of hydrops runner 57 is made
After lower cutting jet pump shear pin 58, jet pump track pin 59 forces the rail groove of lower mandrel 54 to rotate, lower mandrel 54
Drive whole mandrel (including upper mandrel 52, nozzle 53 and lower mandrel 54) it is descending in place after, dual channel formula jet pump 5 is just in beating
Open state, prevent the underground such as sand foul from flowing into runner；Lower mandrel 54 is spacing by jet pump track pin 59, prevents dual channel formula
Jet pump 5 accidental switches off.
Above-mentioned underground gas production tubing string, which is applied to shaft bottom, the producing well of hydrops, if shaft bottom hydrops is not serious, only needs direct
Tripping in pressure；Gaslift can be coordinated to bring back to life payzone if shaft bottom hydrops is serious, after tripping in pressure.Using Operation Tubing Aggregate to underground gas production
Tubing string tripping in, enter to the lower end of dual channel formula jet pump 5 and be located on underground on payzone, the lower end of suction pipe 7 is under lower payzone
Afterwards, underground gas production tubing string is set on hanger.Under the dual channel effect of dual channel formula jet pump 5, power gas passes through spray
Pressure energy is converted into the kinetic energy of high-speed jet, under swabbing action caused by injection drop, with underground foul during mouth 53
Hydrops is sucked after the filter of screen casing 8 by suction pipe 7, and a kind of strengthen is formed on interface of the high-speed jet with the shaft bottom hydrops of suction
Sheared edge interlayer, successively produce vortex on the boundary layer, the outer liquid in boundary layer rolls into a ball the blending constantly into air-flow, hydrops drop
The small droplet of diameter is broken for, and gas-liquid is sufficiently mixed, in dual channel formula jet pump 5, the pumping of suction pipe 7, strong atomizing
Deng under synergy, the flowing of effectively start shaft bottom hydrops simultaneously realizes the blowing of gas well.After effectively start fluid, due to suction pipe 7
Under lower payzone, suction pipe 7 can be done directly on shaft bottom hydrops for lower end, makes the liquid level position rapid decrease of hydrops, reduces shaft bottom
Back pressure, payzone are completely exposed, and the recovery percent of payzone is greatly improved, and also effectively slow down gas well yield and pressure is passed
The rate of deceleration, further extend gas well stable production period.
For the water pumping gas production of horizontal well, the dual channel formula jet pump 5 of above-mentioned underground gas production tubing string is lowered into hole angle
Inclination section be 40 °~60 ° of position, 7 time depths of suction pipe can determine according to the well-drilling borehole track of net horizontal section, by suction pipe 7
The minimum point of net horizontal section is stretched into lower end, can effectively improve band water-based energy of the dual channel formula jet pump 5 in net horizontal section；Double
Under the strong atomizing effect of flow channel type jet pump 5 and the double action of speed column 3, extremely effective it can improve liquid film most
Flow effect at thickness.
Claims (5)
1. underground gas production tubing string, it is characterized in that：With the speed column (3) and dual channel connected by the first direct-connected joint (4)
Formula jet pump (5), and power gas import (512) corresponding with dual channel formula jet pump (5) and underground hydrops import (86), it is double
The other end of flow channel type jet pump (5) is connected with suction pipe (7), and speed column (3), double fluid by the second direct-connected joint (6)
The external diameter of road formula jet pump (5) and suction pipe (7) is consistent；
Described dual channel formula jet pump (5) includes the jet pump outer barrel (51) provided with the power gas import (512), and at it
The interior upper mandrel (52) and lower mandrel (54) being connected by nozzle (53), wherein upper mandrel (52) includes the expanding of through connection
Pipe portion and equal diameter pipe portion, one end of its intermediate diameter pipe portion are connected with the nozzle (53), be provided with the lower mandrel (54) with
Dynamic air-flow road (55) corresponding to power gas import (512), and between lower mandrel (54) and jet pump outer barrel (51) and
The product corresponding with the underground hydrops import (86) mutually insulated with the dynamic air-flow road (55) by sealing structure (56)
Liquid stream road (57), jet pump shear pin (58) is additionally provided with the downstream of lower mandrel (54) and is axially transported located at lower mandrel (54)
Jet pump track pin (59) on dynamic rail road.
2. gas production tubing string in underground as claimed in claim 1, it is characterized in that：The liquid feeding end of suction pipe (7) provided with the underground with accumulating
Screen casing (8) connection of liquid import (86).
3. gas production tubing string in underground as claimed in claim 2, it is characterized in that：The screen casing (8) includes in tip side provided with close
The screen casing outer barrel (81) of seal (83), screen casing outer barrel (81) is interior to be equipped with the movable fuse that can be axially moved along outer barrel (81)
(82) the screen casing track pin (84) spacing to movable fuse (82), is additionally provided with screen casing outer barrel (81), and can be movable
The screen casing shear pin (85) that fuse (82) is cut.
4. the method for underground gas production, it is characterized in that：By the underground gas production tubing string tripping in gas recovery well described in one of claims 1 to 3
In, the lower end of the dual channel formula jet pump of underground gas production tubing string is located on the upper payzone of gas recovery well, underground gas production tubing string
Suction pipe lower end is located under lower payzone, during to horizontal well gas production, by under the dual channel formula jet pump of described underground gas production tubing string
It is the well section position in the range of 40 °~60 ° to enter to inclination section hole angle, and pipette tip is stretched into the minimum point progress of horizontal well
The discharge of horizontal segment hydrops, underground hydrops is set to be sucked under the effect of power gas by suction pipe, servo-actuated strength enters dual channel formula in the lump
Jet pump is simultaneously fractured into droplet and is mutually mixed, and shaft bottom hydrops is realized under the pumping of dual channel formula jet pump and atomizing
Flowing and realize the blowing of gas well gas.
5. method as claimed in claim 4, it is characterized in that：Behind underground gas production tubing string tripping in the position, using speed pipe
Post wellhead assembly seat is hung underground gas production tubing string and positioned.
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| CN201510729522.XA CN105257256B (en) | 2015-10-31 | 2015-10-31 | Underground gas production tubing string and gas production method |
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| CN201510729522.XA CN105257256B (en) | 2015-10-31 | 2015-10-31 | Underground gas production tubing string and gas production method |
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| CN105257256B true CN105257256B (en) | 2018-03-09 |
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| US11099584B2 (en) * | 2017-03-27 | 2021-08-24 | Saudi Arabian Oil Company | Method and apparatus for stabilizing gas/liquid flow in a vertical conduit |
| CN107387048B (en) * | 2017-08-03 | 2019-09-10 | 中国石油天然气股份有限公司 | Gas injection well runner conversion equipment |
| CN107401399B (en) * | 2017-08-29 | 2019-06-11 | 中国石油天然气股份有限公司 | Controllable steam injection string |
| CN109184621A (en) * | 2018-09-17 | 2019-01-11 | 宁夏嘉润石油工程技术有限公司 | A kind of water pumping gas production integrating device |
| CN109736750A (en) * | 2019-01-07 | 2019-05-10 | 中国石油大学(华东) | A kind of preset tubing string gas-liquid pressure-boosting atomization water pumping gas production equipment |
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| CN201344030Y (en) * | 2009-01-21 | 2009-11-11 | 中国石油大学(北京) | Underground atomizer for gas recovery by liquid drainage |
| CN102562681A (en) * | 2011-12-14 | 2012-07-11 | 天津市滨海新区龙新石油机械制造有限公司 | Hydraulic jet pump capable of realizing reverse-circulating production and reverse-circulating lifting of pump core |
| CN103807222A (en) * | 2012-11-12 | 2014-05-21 | 天津大港油田钻采技术开发公司 | Double-pipe hydraulic jet flow pump |
| CN104329057A (en) * | 2014-09-12 | 2015-02-04 | 西安交通大学 | Natural gas well supersonic nozzle atomization drainage gas recovery device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20150308434A1 (en) * | 2014-04-24 | 2015-10-29 | Pumptek Asia Ltd., Dba Pumptek, Llc | Pumping system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201344030Y (en) * | 2009-01-21 | 2009-11-11 | 中国石油大学(北京) | Underground atomizer for gas recovery by liquid drainage |
| CN102562681A (en) * | 2011-12-14 | 2012-07-11 | 天津市滨海新区龙新石油机械制造有限公司 | Hydraulic jet pump capable of realizing reverse-circulating production and reverse-circulating lifting of pump core |
| CN103807222A (en) * | 2012-11-12 | 2014-05-21 | 天津大港油田钻采技术开发公司 | Double-pipe hydraulic jet flow pump |
| CN104329057A (en) * | 2014-09-12 | 2015-02-04 | 西安交通大学 | Natural gas well supersonic nozzle atomization drainage gas recovery device and method |
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