CN105257256A - Downhole gas exploitation string and gas exploitation method - Google Patents
Downhole gas exploitation string and gas exploitation method Download PDFInfo
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- CN105257256A CN105257256A CN201510729522.XA CN201510729522A CN105257256A CN 105257256 A CN105257256 A CN 105257256A CN 201510729522 A CN201510729522 A CN 201510729522A CN 105257256 A CN105257256 A CN 105257256A
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Abstract
The invention relates to a downhole gas exploitation string and a gas exploitation method. The downhole gas exploitation string comprises a velocity string and a double-flow-channel jet pump, as well as a power gas inlet and a downhole fluid inlet; the velocity string and the double-flow-channel jet pump are connected through a first direct connector; the power gas inlet and the downhole fluid inlet correspond to the double-flow-channel jet pump; a sucker is connected with the other end of the double-flow-channel jet pump through a second direct connector; the velocity string, the double-flow-channel jet pump and the sucker have the same outer diameters. Through adoption of the downhole gas exploitation string and the gas exploitation method, efficient water draining and gas exploitation can be effectively performed in a gas well which is low in pressure and gas yield and high in water yield; especially for water draining and gas exploitation in a multi-completion well, a lower watered-out well and a horizontal well, the exploitation degree of a production layer can be remarkably improved, the yield and the pressure regression rate of the gas well are obviously slowed down, and the stable production period of the gas well is effectively prolonged.
Description
Technical field
The present invention relates to the apparatus and method of natural gas well water pumping gas production, is specifically down-hole gas production tubing string and gas production 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, its production capacity generally low, stable production period is short, the stable yields improving periods of low pressure improves the key of recovery ratio, especially the gas well low for gas-water ratio, aquifer yield is large, proposes requirements at the higher level to discharge opeing; For the high pressure of deep layer gas reservoir, low yield, gas well that aquifer yield is large, shaft bottom section production capacity due to the initial stage of going into operation does not reach the requirement of liquid in lifting well, after causing many mouthfuls of flowing wells to be gone into operation, gas, aquatic products amount, well head pressure are successively decreased too fast, oil jacket pressure reduction is large, shaft bottom hydrops is serious, and the discharge opeing difficult problem in manufacturing process will highlight; Current horizontal well has become the main development scheme of gas reservoir, and produce water and have a big risk, special casing programme often affects gas well discharge opeing, and the drainage problem how solving horizontal well will be a difficult problem of being badly in need of capturing.
Conventional mining measure mainly comprises the modes such as bubble row, the water pumping gas production of speed tubing string, gaslift.For low yield, gas well that aquifer yield is large, the DeGrain of bubble row, can only alleviate hydrops degree to horizontal well, cannot thoroughly discharge opeing; Can speed tubing string be easy to because caliber is less form large section slug, start fluid and there is risk, cannot realize horizontal segment hydrops discharge horizontal well, and the discharge opeing deleterious in mining later stage.Gaslift mining only can realize the hydrops lifting of more than circulation slide sleeve, cannot realize horizontal segment hydrops and discharge; For low-voltage and low-yield gas well, hydraulic jet pump, gas accelerator are the production scheme adopting external energy, corollary equipment infusion high-pressure medium need be utilized to take liquid to ground, once after the termination of pumping of ground, hydraulic jet pump does not possess self-excitation function in down-hole because lacking power water source, and hydrops is again incited somebody to action in shaft bottom; The self-excitation function of gas accelerator is limited, after gaslift once ground stops infusion high pressure gas, there is again the risk of hydrops in shaft bottom, this is because pipe aperture is far above speed tubing string internal diameter, required critical liquid carrying flow rate is high, and the strong atomizing effect of this pump has certain effect distance, thus gas accelerator can only, flush stage that aquifer yield few gas well extend gas well high to gas-water ratio.
Summary of the invention
The invention provides a kind of down-hole gas production tubing string and gas production method, to overcome the existing deficiency to low-voltage and low-yield, gas well mining measure that aquifer yield is large, carry out the water pumping gas production mode that a kind of application model is flexible, effectively start fluid, band water-based can be good, to make, down-hole liquid level position declines fast, payzone exposes completely, improve payzone recovery percent, and effectively slow down gas well output and pressure decline speed, extend gas well stable production period further.
Gas production tubing string in down-hole of the present invention, be there is the speed tubing string and dual channel formula jet pump that are connected by the first direct-connected joint, and the power gas import corresponding with dual channel formula jet pump and down-hole 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 tubing string, dual channel formula jet pump and suction pipe is consistent.Described speed tubing string, dual channel formula jet pump and suction pipe are linked in sequence from top to bottom by the first direct-connected joint and the second direct-connected joint, speed tubing string can be identical with existing structure or similar with the structure of suction pipe, dual channel formula jet pump structure can with existing similar, its critical piece includes nozzle, venturi and anemostat etc., and the groundwork parts of dissimilar dual channel formula jet pump are much the same.Once use dual channel formula jet pump using surface pump beam body such as, as hydrops, hydraulic jet pump, gas accelerator etc. under power source swabbing well although have in prior art, be the production scheme by external energy.Present invention utilizes the operating principle of dual channel formula jet pump uniqueness, simultaneously in conjunction with gas stringer self features, go out a kind of without the need to getting final product the every of automatic swabbing well prodelta clay liquid by external power supply, self there is the principle of pressure pumping effect utilizing the natural gas in gas well from output to pit shaft process, achieve jet pump function.When dual channel formula jet pump is under the prerequisite that external diameter is less, require the dual channel (dynamic air-flow road, hydrops runner) in it to cross flow diameter enough large, and minimum wall thickness (MINI W.) between two runners is enough thick, just can meet the erosion requirement of dual channel.Can by milling flow path groove, shape the processing modes such as runner and meet above requirement.
For when adopting speed tubing string water pumping gas production during low to gas liquid ratio in traditional approach, aquifer yield is large gas well, legacy equipment can make air-flow take when liquid flows to speed tubing string and easily form large section slug under the effect of single channel, air-flow is difficult to be distributed in slug, cause flowing starting efficiency low, once the slug in speed tubing string is long, back pressure is excessive, and payzone will be caused to kill; After fluid starts, general initial stage discharge opeing effect is better, but along with the reduction of output, pressure, the large section slug in the section speed tubing string of shaft bottom cannot be broken for the small droplet of diameter, flowing is easy in slug flow flow pattern, the lifting efficiency of shaft bottom hydrops reduces, and slippage amount constantly increases, and taking liquid difficulty increases, aquifer yield declines, along with increase, the back pressure rising of shaft bottom hydrops, by causing the continuation of output to decline, even stop production.。The dual channel formula jet pump of gas production tubing string in down-hole of the present invention directly applies on speed tubing string, by the pumping of dual channel formula jet pump and atomizing, the lifting of shaft bottom hydrops is converted into the lifting of spray, make gas take liquid and be exported to the flow pattern being presented " omnidistance spray " in the whole flow process of well head from dual channel formula jet pump, effectively achieve the large lifting of gas well to shaft bottom hydrops of low yield, aquifer yield and the blowing of gas well.Because the internal diameter of suction pipe that connects below dual channel formula jet pump is much smaller than the internal diameter of described oil pipe, under certain pumping power, its hydrops flow is lower, is more conducive to taking liquid.Under dual channel (dynamic air-flow road, the hydrops runner) effect of dual channel formula jet pump, during the nozzle of power gas by dual channel formula jet pump, pressure energy is converted to the kinetic energy of high speed a fluid stream, start dynamic air-flow to move, down-hole hydrops is under the synergy such as pumping and atomization, the hydrops breakup of drop is the droplet that diameter is small, gas-liquid fully mixes, and makes power gas be provided with good fluid-carrying capability like this, thus the hydrops flowing in effectively start speed tubing string.Critical production capacity needed for the water pumping gas production of speed tubing string is far below the threshold of oil pipe, under certain production capacity, power gas in speed tubing string can obtain higher flow velocity, can effectively prevent from again accumulating the larger drop of diameter through the hydrops droplet that the diameter of atomizing is small, the atomizing effect of hydrops is continued, be exported to the flow process of " omnidistance spray " of well head from dual channel formula jet pump like this, when stratum energy is constant, obviously reduce the gravity of lift energy in the hydrops lifting process of shaft bottom and slippage loss, also sufficiently lower low yield simultaneously, it is required along journey pressure consumption when liquid taken by the gas well that aquifer yield is large in oil pipe, effectively achieve the lifting of gas stringer to shaft bottom hydrops and the blowing of gas well.
Simultaneously, when the gas well large for high pressure, low yield, aquifer yield, what not only certainly have the tubing string of dual channel formula jet pump is exported to the flow pattern obtaining " omnidistance spray " in the whole flow process of well head, and by larger Pressure Drop that the nozzle upstream and downstream of dual channel formula jet pump obtain, effectively can carry out downhole choke while water pumping gas production, reduce well head pressure, be conducive to safety in production and the production management of gas well.Such gas well can also adopt the movable dual channel formula jet pump that can directly be engaging on oil pipe, the nozzle downstream of dual channel formula jet pump, the ratio of upstream pressure can reach 0.546:1, therefore air-flow will reach critical flow conditions after nozzle, the maximum pressure general who has surrendered acting on nozzle upstream and downstream reaches maximum value, gaseous phase volume expands, gas segment elongation, the atomizing effect of hydrops is continued, and water production just can be taken liquid to ground by production capacity efficiently lower equally.By the reliability design of movable self-excitation pump and kit, while being achieved gas well downhole choke, hydrops spray in well is carried out well, effectively can not only be underspeeded string technology cost, save the holistic cost comprising coiled tubing tubing expense, also farthest well head pressure be can reduce, safety in production and the production management of gas well are very beneficial for.
Therefore, the speed tubing string connecting dual channel formula jet pump can make full use of gas reservoir self-energy, do not need extra power just can overcome gas reservoir in gas well during the hydrops draining of shaft bottom as the not enough problem of power source, under the dual channel effect of dual channel jet pump, swabbing action and atomizing are produced to shaft bottom hydrops, shaft bottom hydrops is lifted to well head by the effect in conjunction with speed tubing string, just meets the needs of the liquid discharging gas producing of low to gas-water ratio, that aquifer yield is large low-voltage and low-yield gas well with this.
Further, the liquid feeding end of suction pipe is connected with the screen casing being provided with the hydrops import of described down-hole.Screen casing is a kind of typical filter equipment at present in down-hole gas production tubing string, such as cutting seam sieve tube, boring screen casing etc., and its Main Function is exactly that the down-hole fouls such as sand control flow into runner.Down-hole hydrops is entered by the down-hole hydrops import on screen casing, after screen casing filters, enter dual channel jet pump.
Wherein a kind of screen construction of more excellent structure includes the screen casing urceolus being provided with sealing ring at tip side, being equipped with in screen casing urceolus can along the movable fuse of urceolus axially-movable, the screen casing track pin spacing to movable fuse is also provided with in screen casing urceolus, and the screen casing shear pin can cut off by movable fuse.The diverse location be in by movable fuse realizes the switching function of screen casing.When speed tubing string seat is hung, after filling fluid in suction pipe, the movable fuse of screen casing is built the pressure to certain pressure, cuts off screen casing shear pin, movable fuse is descending.Screen casing track pin forces the rail groove on movable fuse to rotate, and make movable fuse go downwards to position, thus open the runner of screen casing, at this moment screen casing is in open mode, prevents the down-hole fouls such as sand from flowing into runner.Under the upper top power effect of well internally-powered gas, movable fuse is up, until screen casing track pin card hangs over the limited step place of slide core sub-track groove, so just can effectively prevent the runner of screen casing from closing under fortuitous event.
Concrete, described dual channel formula jet pump comprises the jet pump urceolus being provided with the import of described power gas, the upper mandrel be within it connected by nozzle and lower mandrel, wherein go up expansion tube portion and equal diameter pipe portion that mandrel comprises through connection, the one end in its intermediate diameters pipe portion is connected with described nozzle, the dynamic air-flow road corresponding with the import of power gas is provided with in lower mandrel, and to be located between lower mandrel and jet pump urceolus and by with the described down-hole hydrops import corresponding hydrops runner of hermetically-sealed construction with the mutual packing in described dynamic air-flow road, also be provided with jet pump shear pin at the downstream part of lower mandrel and be located at the jet pump track pin on lower mandrel axially-movable track.Because dual channel formula jet pump external diameter is little, limit the processing of dynamic air-flow road and hydrops runner, conveniently the processing and manufacturing of small size component, the common method for designing forming the flow channel of fluid after adopting assembling.By the inner headed face of employing at jet pump urceolus and the periphery milling flow path groove respectively of lower mandrel, between jet pump urceolus and lower mandrel, after assembling, just define the hydrops runner of annular space like this.Hermetically-sealed construction between lower mandrel and jet pump urceolus can be O-ring seals, in order to packing dynamic air-flow road and hydrops runner, guarantees the front and back that two runners are opened successively, and two runners can realize complete packing.
Present invention also offers the method for a kind of down-hole gas production, enter under above-mentioned down-hole gas production tubing string after in gas recovery well, make the lower end of the dual channel formula jet pump of down-hole gas production tubing string be positioned on the upper payzone of gas recovery well, the suction pipe lower end of down-hole gas production tubing string is positioned under lower payzone.If only there is a payzone, then the lower end of dual channel formula jet pump and suction pipe are all placed under this payzone.Because dual channel formula jet pump directly acts on shaft bottom hydrops, down-hole hydrops is sucked by suction pipe under the effect of power gas, and servo-actuated strength enters dual channel formula jet pump in the lump and is fractured into droplet and mutually mixes.The down-hole hydrops that suction pipe sucks is under the dual channel effect of dual channel formula jet pump, during the nozzle of power gas by down-hole gas production tubing string, pressure energy is converted to the kinetic energy of high-speed jet, under the swabbing action that injection drop produces, down-hole hydrops is sucked by suction pipe runner after filtering, the interface of the shaft bottom hydrops of high-speed jet and suction is formed a kind of sheared edge interlayer of strengthening, successively produce vortex on the boundary layer, outside boundary layer, liquid group is constantly to blending in air-flow, the hydrops breakup of drop is made to be the droplet that diameter is small, thus achieve the transformation of lifting medium from liquid state to gaseous state, overwhelming majority shaft bottom hydrops is present in gas with the form of droplet, the hydrops in speed tubing string can be effectively made to flow under the pumping and atomizing of dual channel formula jet pump, then Negotiation speed tubing string makes the atomizing effect of hydrops be continued, after gas-liquid fully mixes, under the swabbing action of dual channel formula jet pump, realize the flowing of shaft bottom hydrops and realize the blowing of gas well gas.Just the appearance of slug flow equal flow type in lifting process is avoided thus, and in whole elevate a turnable ladder process, do not need extraneous extra power, take full advantage of gas reservoir self-energy and carry out efficient water pumping gas production operation, increase substantially the water pumping gas production efficiency of the gas stringer that gas-water ratio is low, aquifer yield is large.The method can be applicable to the producing well that there is hydrops in shaft bottom, if shaft bottom hydrops is not serious, only gas production tubing string in down-hole directly need be with depress into; If shaft bottom hydrops is serious, down-hole air collecting pipe cornice can coordinate gaslift to bring back to life payzone after depressing.Meanwhile, because suction pipe directly acts on shaft bottom hydrops, the liquid level position of hydrops is declined fast, reduces shaft bottom back pressure, payzone exposes completely, fast and increased substantially payzone recovery percent, effectively slow down gas well output and pressure decline speed.Gas production tubing string of the present invention and gas production method pollution-free to payzone, and to payzone strong adaptability, also opened stratum aerogenesis microscopic checks while getting rid of pit shaft hydrops, increased substantially single well productivity, obviously extended gas well stable production period.
Further, during to horizontal well gas production, by enter under the dual channel formula jet pump of described down-hole gas production tubing string to inclination section hole angle be well fragment position within the scope of 40 ° ~ 60 °, effectively can improve the band water-based energy of self-excitation pump in down-hole at net horizontal section like this, the liquid level position of down-hole hydrops is declined fast, and the minimum point simultaneously pipette tip being stretched into horizontal well carries out the discharge of horizontal segment hydrops.Under the strong atomizing effect of dual channel formula jet pump and the double action of speed tubing string of down-hole gas production tubing string, effectively improve the flow effect within the scope of the thickest inclination section of hydrops liquid film 40 ° ~ 60 °.
Concrete, enter under down-hole gas production tubing string to described position, adopt speed tubing string wellhead assembly seat to hang down-hole gas production tubing string and position.
Gas production tubing string in down-hole of the present invention and gas production method, effectively can carry out efficient water pumping gas production to low-voltage and low-yield, gas well that aquifer yield is large, especially can significantly improve the recovery percent of payzone to the mining of commingling production, lower floor's watered-out well, obviously extend gas well stable production period.
Below in conjunction with the detailed description of the invention of embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following example.Without departing from the idea case in the present invention described above, the various replacement made according to ordinary skill knowledge and customary means or change, all should comprise within the scope of the invention.
Accompanying drawing explanation
Fig. 1 is the axial section structural representation of gas production tubing string in down-hole 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.
Detailed description of the invention
Gas production tubing string in down-hole of the present invention as shown in Figure 1, has the speed tubing string 3 and dual channel formula jet pump 5 that are connected by the first direct-connected joint 4.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 directly acts on shaft bottom hydrops, has better band water-based energy good.Screen casing 8 is also connected with in the lower end of suction pipe 7.The external diameter of described speed tubing string 3, dual channel formula jet pump 5 and suction pipe 7 is consistent.During practical application, be also equipped with oil pipe 1 outward at down-hole gas production tubing string.
Screen casing 8 as shown in Figure 2, includes the screen casing urceolus 81 being provided with sealing ring 83 at tip side, and screen casing urceolus 81 is provided with down-hole hydrops import 86.Be equipped with in screen casing urceolus 81 and along the movable fuse 82 of urceolus 81 axially-movable, can be also provided with the screen casing track pin 84 spacing to movable fuse 82 in screen casing urceolus 81, and the screen casing shear pin 85 can cut off by movable fuse 82.The switching function that diverse location realizes screen casing 8 is in by movable fuse 82.Before movable fuse 82 cuts off screen casing shear pin 85, screen casing 8 is in closed condition; Fill fluid in the suction pipe 7 of down-hole gas production tubing string after, build the pressure activity fuse 82 to certain pressure until after cutting off screen casing shear pin 85, promotion activity fuse 82 is descending, screen casing track pin 84 forces the rail groove on movable fuse 82 to rotate, movable fuse 82 is descending put in place after, screen casing 8 is just in open mode, prevents the down-hole fouls such as sand from flowing into runner; Movable fuse 82 is spacing by screen casing track pin 84, prevents the unexpected closedown of screen casing 8.
As shown in Figure 3, the dual channel formula jet pump 5 adopted in the present embodiment, includes the jet pump urceolus 51 being provided with power gas import 512, with the upper mandrel 52 be within it connected by nozzle 53 and lower mandrel 54.The jet pump urceolus 51 speed tubing string pipe nipple of Φ 38.1mm × 4.45mm directly processes, and upper mandrel 52 includes expansion tube portion and the equal diameter pipe portion of through connection, and the one end in its intermediate diameters pipe portion is connected with described nozzle 53.The dynamic air-flow road 55 corresponding with described power gas import 512 is provided with in lower mandrel 54, and to be located between lower mandrel 54 and jet pump urceolus 51 and by the hydrops runner 57 corresponding with described down-hole hydrops import 86 of the hermetically-sealed construction 56 of O-ring seals and described dynamic air-flow road 55 packing mutually, at the jet pump track pin 59 that the downstream part of lower mandrel 54 is also provided with jet pump shear pin 58 and is located on lower mandrel 54 axially-movable track.Between nozzle 53 and lower mandrel 54, copper packing 510 is installed, in order to the dynamic air-flow road 55 of sealed-in nozzles 53 upstream.Larynx mouth between nozzle 53 and upper mandrel 52, apart from then being regulated by the number of active coils of both thread engagements, is regulated after putting in place and screws in the fixing upper mandrel 52 of retaining pin 511.When using the speed tubing string 3 of Φ 38.1mm and following specification, under the prerequisite that the external diameter of dual channel formula jet pump 5 is enough little, require that the mistake flow diameter of dual channel (dynamic air-flow road 55 and hydrops runner 57) is wherein enough large, and need corresponding minimum wall thickness (MINI W.) between two runners, so that the erosion requirement of dual channel can be met.By adopting milling flow path groove, shaping the processing modes such as runner, between jet pump urceolus 51 and lower mandrel 54, after assembling, just define the hydrops runner 57 of annular space.Above requirement can be met.The hermetically-sealed construction 56 of O-ring seals all passing through between dynamic air-flow road 55 and hydrops runner 57 to install carries out packing, the hydrops runner 57 simultaneously also formed after packing assembling.In addition, whole mandrel (comprising mandrel 52, nozzle 53 and lower mandrel 54) can be axially movable, is in by it switching function that diverse location realizes dual channel formula jet pump 5.After screen casing 8 is in open mode, improve infusion discharge capacity, cut off jet pump shear pin 58 under the chock pressure difference effect of hydrops runner 57 after, jet pump track pin 59 forces the rail groove of lower mandrel 54 to rotate, after lower mandrel 54 drives that whole mandrel (comprising mandrel 52, nozzle 53 and lower mandrel 54) is descending and puts in place, dual channel formula jet pump 5 is just in open mode, prevents the down-hole fouls such as sand from flowing into runner; Lower mandrel 54 is spacing by jet pump track pin 59, prevents the unexpected closedown of dual channel formula jet pump 5.
Above-mentioned down-hole gas production tubing string is applicable to the producing well that there is hydrops in shaft bottom, if shaft bottom hydrops is not serious, only need directly band depress into; If shaft bottom hydrops is serious, band can coordinate gaslift to bring back to life payzone after depressing.Utilize Operation Tubing Aggregate to enter under down-hole gas production tubing string, the lower end entered to dual channel formula jet pump 5 is positioned on down-hole on payzone, the lower end of suction pipe 7 under lower payzone after, down-hole gas production tubing string is set on hanger.Under the dual channel effect of dual channel formula jet pump 5, power gas is by converting the kinetic energy of high-speed jet to by pressure energy during nozzle 53, under the swabbing action that injection drop produces, hydrops with down-hole foul is sucked by suction pipe 7 after screen casing 8 is filtered, the interface of the shaft bottom hydrops of high-speed jet and suction is formed a kind of sheared edge interlayer of strengthening, successively produce vortex on the boundary layer, outside boundary layer, liquid group is constantly to blending in air-flow, the hydrops breakup of drop is the droplet that diameter is small, and gas-liquid fully mixes, at dual channel formula jet pump 5, the pumping of suction pipe 7, under the synergy such as strong atomizing, the flowing of effectively start shaft bottom hydrops also realizes the blowing of gas well.After effectively start fluid, because suction pipe 7 lower end is under lower payzone, suction pipe 7 can directly act on shaft bottom hydrops, the liquid level position of hydrops is declined fast, reduces shaft bottom back pressure, payzone exposes completely, increase substantially the recovery percent of payzone, and effectively slow down gas well output and pressure decline speed, extend gas well stable production period further.
For the water pumping gas production of horizontal well, the inclination section dual channel formula jet pump 5 of above-mentioned down-hole gas production tubing string being lowered into hole angle is the position of 40 ° ~ 60 °, suction pipe 7 times is dark can be determined according to the well-drilling borehole track of net horizontal section, the lower end of suction pipe 7 is stretched into the minimum point of net horizontal section, effectively can improve the band water-based energy of dual channel formula jet pump 5 at net horizontal section; Under the strong atomizing effect of dual channel formula jet pump 5 and the double action of speed tubing string 3, extremely effectively can improve the flow effect in liquid film thickness.
Claims (7)
1. down-hole gas production tubing string, it is characterized by: be there is the speed tubing string (3) and dual channel formula jet pump (5) that are connected by the first direct-connected joint (4), and the power gas import (512) corresponding with dual channel formula jet pump (5) and down-hole hydrops import (86), the other end of dual channel formula jet pump (5) is connected with suction pipe (7) by the second direct-connected joint (6), and the external diameter of speed tubing string (3), dual channel formula jet pump (5) and suction pipe (7) is consistent.
2. gas production tubing string in down-hole as claimed in claim 1, is characterized by: the liquid feeding end of suction pipe (7) is connected with the screen casing (8) being provided with described down-hole hydrops import (86).
3. gas production tubing string in down-hole as claimed in claim 2, it is characterized by: described screen casing (8) includes the screen casing urceolus (81) being provided with sealing ring (83) at tip side, being equipped with in screen casing urceolus (81) can along the movable fuse (82) of urceolus (81) axially-movable, the screen casing track pin (84) spacing to movable fuse (82) is also provided with in screen casing urceolus (81), and the screen casing shear pin (85) can cut off by movable fuse (82).
4. the down-hole gas production tubing string as described in one of claims 1 to 3, it is characterized by: described dual channel formula jet pump (5) comprises the jet pump urceolus (51) being provided with described power gas import (512), the upper mandrel (52) be within it connected by nozzle (53) and lower mandrel (54), wherein go up expansion tube portion and equal diameter pipe portion that mandrel (52) comprises through connection, the one end in its intermediate diameters pipe portion is connected with described nozzle (53), the dynamic air-flow road (55) corresponding with power gas import (512) is provided with in lower mandrel (54), and to be located between lower mandrel (54) and jet pump urceolus (51) and by the hydrops runner (57) corresponding with described down-hole hydrops import (86) of the mutual packing of hermetically-sealed construction (56) and described dynamic air-flow road (55), also be provided with jet pump shear pin (58) at the downstream part of lower mandrel (54) and be located at the jet pump track pin (59) on lower mandrel (54) axially-movable track.
5. the method for down-hole gas production, it is characterized by: will enter in gas recovery well under the down-hole gas production tubing string one of Claims 1-4 Suo Shu, the lower end of the dual channel formula jet pump of down-hole gas production tubing string is made to be positioned on the upper payzone of gas recovery well, the suction pipe lower end of down-hole gas production tubing string is positioned under lower payzone, down-hole hydrops is sucked by suction pipe under the effect of power gas, servo-actuated strength enters dual channel formula jet pump in the lump and is fractured into droplet and mutually mixes, and realizes the flowing of shaft bottom hydrops and realize the blowing of gas well gas under the pumping and atomizing of dual channel formula jet pump.
6. method as claimed in claim 5, it is characterized by: during to horizontal well gas production, be well fragment position within the scope of 40 ° ~ 60 ° by entering to inclination section hole angle under the dual channel formula jet pump of described down-hole gas production tubing string, and minimum point pipette tip being stretched into horizontal well carries out the discharge of horizontal segment hydrops.
7. the method as described in claim 5 or 6, is characterized by: enter under down-hole gas production tubing string to described position, adopts speed tubing string wellhead assembly seat to hang down-hole gas production tubing string and positions.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387048A (en) * | 2017-08-03 | 2017-11-24 | 中国石油天然气股份有限公司 | Gas injection well runner conversion equipment |
| CN107401399A (en) * | 2017-08-29 | 2017-11-28 | 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 |
| CN109477370A (en) * | 2017-03-27 | 2019-03-15 | 沙特阿拉伯石油公司 | Method and apparatus for stablizing the gas/liquid flowing in vertical pipeline |
| 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 |
Citations (5)
| 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 |
| US20150308434A1 (en) * | 2014-04-24 | 2015-10-29 | Pumptek Asia Ltd., Dba Pumptek, Llc | Pumping system |
-
2015
- 2015-10-31 CN CN201510729522.XA patent/CN105257256B/en active Active
Patent Citations (5)
| 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 |
| US20150308434A1 (en) * | 2014-04-24 | 2015-10-29 | Pumptek Asia Ltd., Dba Pumptek, Llc | Pumping system |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477370A (en) * | 2017-03-27 | 2019-03-15 | 沙特阿拉伯石油公司 | Method and apparatus for stablizing the gas/liquid flowing in vertical pipeline |
| CN107387048A (en) * | 2017-08-03 | 2017-11-24 | 中国石油天然气股份有限公司 | Gas injection well runner conversion equipment |
| 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 |
| CN107401399A (en) * | 2017-08-29 | 2017-11-28 | 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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