CN105642466B - A kind of spill type atmizer being atomized for hydrops in the natural gas well - Google Patents
A kind of spill type atmizer being atomized for hydrops in the natural gas well Download PDFInfo
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- CN105642466B CN105642466B CN201610019137.0A CN201610019137A CN105642466B CN 105642466 B CN105642466 B CN 105642466B CN 201610019137 A CN201610019137 A CN 201610019137A CN 105642466 B CN105642466 B CN 105642466B
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- natural gas
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- atmizer
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
-
- 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
Abstract
The invention discloses a kind of spill type atmizer being atomized for hydrops in the natural gas well, including reverse-flow type jet stream tube cylinder, it is followed successively by nozzle entrance section, nozzle trunnion and reverse-flow type jet pipe inner cavity chamber from bottom to top in the reverse-flow type jet stream tube cylinder；Wherein, nozzle entrance section is by down toward upper linear reduced type Taper Pipe, nozzle trunnion is straight tube, and reverse-flow type jet pipe inner cavity chamber is by down toward upper linear increase type Taper Pipe；Several return ports being connected with nozzle throat pipe end are offered from bottom to top on reverse-flow type jet stream tube cylinder barrel at nozzle trunnion.Further, several seal grooves are offered from bottom to top on reverse-flow type jet pipe cylinder body outer wall at nozzle entrance section, when work, spill type atmizer is arranged in natural gas pit shaft, there are reflux annular spaces between spill type atmizer and natural gas shaft in wall, and are sealed between spill type atmizer and natural gas shaft in wall by the sealing ring being arranged in several seal grooves.
Description
Technical field:
The invention belongs to multi-phase flow technology field more particularly to a kind of reverse-flow type mists being atomized for hydrops in the natural gas well
Change device.
Background technique:
In gas exploitation course, with the continuity of mining time, bottom pressure ofgas well and natural gas flow speed by
It gradually reduces, causes output water or condensed liquid in shaft bottom that cannot carry with gas flow and gas well is discharged together, to be detained
In the natural gas well.The liquid such as these water become and assemble in shaft bottom in the case where that can not be discharged a very long time, form shaft bottom
Hydrops.
Currently, both at home and abroad for how effective solution gas well plug-ging problem, prevent oil/gas well in the middle and later periods because of gas production
Deficiency, and a large amount of research has been carried out by the phenomenon that gas well plug-ging " killing ".It is commonly drained in oil gas field outside Now Domestic
Production gas technology is various, many development technique comparative maturity, and is main drainage gas recovery, example in oil/gas well
Such as technique of plunger gas lift, technology of gas recovery by foam drainage, water conservancy pump drainage production gas technology, utensil drainage gas recovery, electric submersible pump row
Water production gas technology, Concentric capillary tubing technology, thermal methods processing condensation water technology, intermittent mining method, oil pipe/annular space are alternately controlled
Box cupling method in preparation method, note nitrogen production gas technology and oil pipe.But exist in practical operation application in these new technical matters
Many deficiencies: a series of problems, such as area requirement on probation is high, and cost is high, and maintenance difficulties are big.For example use foaming water discharge
When technology, although have it is more a little, need in the process of running quantitative timing into pit shaft addition row infusion, drain
Ability is not strong enough, also, puts into a large amount of fund in the row's infusion bought, and increases whole operation cost.In another example
Pig gas lift technique in new process, it is both that can adapt to high gas that low pressure gas-producing well has very strong adaptability to this technique
Liquor ratio, highly corrosive, the sand production rate complicated oil/gas well such as big.Gas is carried out since plunger falls in a liquid by self gravity
It lifts, but downstream rate is slower, it is limited to clap liquid measure, therefore can not realize continuous gas lift.Meanwhile current most of water pumping gas production work
Skill equipment needs replace tubing string before operation, such as electric submersible pump, plunger, capillary, machine are taken out, this not only greatly improve gas well at
This, will also delay the normal exploitation period of gas well.
From this, the water pumping gas production mode generally used now there is a problem have much room for improvement and improve.
Summary of the invention:
It is an object of the invention to provide a kind of spill type atmizers being atomized for hydrops in the natural gas well, pass through atomizer knot
Optimization on structure increases hydrops nebulization efficiency in well, improves drainage capacity.
In order to achieve the above objectives, the present invention is achieved through the following technical solutions:
A kind of spill type atmizer being atomized for hydrops in the natural gas well, including reverse-flow type jet stream tube cylinder, the reflux
Nozzle entrance section, nozzle trunnion and reverse-flow type jet pipe inner cavity chamber are followed successively by formula jet stream tube cylinder from bottom to top；Wherein,
Nozzle entrance section is by down toward upper linear reduced type Taper Pipe, nozzle trunnion is straight tube, reverse-flow type jet pipe inner cavity chamber
For by down toward upper linear increase type Taper Pipe；If being offered from bottom to top on the reverse-flow type jet stream tube cylinder barrel at nozzle trunnion
The dry return port being connected with nozzle throat pipe end.
A further improvement of the present invention lies in that the return port on reverse-flow type jet stream tube cylinder barrel offers three from top to bottom
Discharge orifice is flow back to, each row includes equal height and symmetrically arranged two return ports.
A further improvement of the present invention lies in that the angle between two return ports of each row is 180 °.
A further improvement of the present invention lies in that the aperture of each return port is 1~3mm.
It is located at outside reverse-flow type jet stream tube cylinder a further improvement of the present invention lies in that being located at the lowermost return port apertura lateralis
Wall is located at same section with nozzle throat tube inlet end；It is located at reverse-flow type jet stream tube cylinder positioned at the lowermost return port inboard aperture
Inner sidewall is located at same section with nozzle trunnion outlet end；Three flow back to discharge orifice is arranged with equal height, i.e., unilateral one group of return port with
Reverse-flow type jet pipe cylinder body outer wall angle is identical, equidistantly arranges from bottom to top between unilateral one group of the apertura lateralis of return port.
A further improvement of the present invention lies in that on reverse-flow type jet pipe cylinder body outer wall at nozzle entrance section from bottom to top
Offer several seal grooves, when work, spill type atmizer is arranged in natural gas pit shaft, spill type atmizer and the natural gas well
There are reflux annular spaces between cylinder inner wall, and by being arranged in several seal grooves between spill type atmizer and natural gas shaft in wall
Interior sealing ring sealing.
A further improvement of the present invention lies in that the mixed gas of natural gas and hydrops is to enter at a high speed, in nozzle when work
Entrance is depressured raising speed, critical speed is reached at nozzle trunnion, diffusion is atomized after fluid-mixing leaves nozzle trunnion；Atomized flow
Liquid granule impact natural gas well pipe wall forms liquid film in body, and atomizing fluids boost in reverse-flow type jet pipe inner cavity chamber, by liquid
Film roll is taken into reflux annular space, enters nozzle throat pipe end by return port and is atomized again.
A further improvement of the present invention lies in that the taper of nozzle entrance section is 1:1.5~2；
The internal diameter of nozzle trunnion is 1~3mm；
The taper of reverse-flow type jet pipe inner cavity chamber (1) is 1:2~4；
Backflow ring stand-off distance between spill type atmizer and natural gas shaft in wall is from for 1~2.5mm.
The present invention has the following advantages and beneficial effect: compared with prior art
Provided by the present invention for the spill type atmizer that hydrops in the natural gas well is atomized, when work, gas-liquid mixed slug
Fluid carries out compressed line into supersonic flow by nozzle entrance section, is extruded in trunnion, in reverse-flow type jet pipe inner cavity chamber
Atomizating phenomenon occurs.Atomizing fluids are by reverse-flow type jet pipe inner cavity chamber boosting raising speed, and after atomizer is discharged, a part is along well
Cylinder discharge, a part are attached to wellbore wall row when contacting wellbore wall into liquid film, and another part is by between pit shaft and atomizer
Reflux annular space enter, volume, which takes the liquid film of wellbore wall and reenters reverse-flow type jet pipe inner cavity chamber by return pipe together, carries out mist
Change.Wherein atomizing fluids, since there are symmetrical return ports to make the annular space internal pressure power regional balance that flows back, make after entering reflux annular space
The atomizing fluids in reverse-flow type jet pipe inner cavity chamber will not be generated into the reflux fluid in reverse-flow type jet pipe inner cavity chamber strong
Strong disturbance guarantees that the barometric gradient of reverse-flow type jet pipe inner cavity chamber tail portion atomizing fluids is stablized.
It is wherein high-speed gas-liquid fluid-mixing into the fluid of atomizer, manifold is slug flow, therefore in certain times, spray
It deposits pure liquid section in mouth trunnion to pass through, high-speed liquid is more than velocity of sound after nozzle trunnion, is passing through reverse-flow type jet pipe inner cavity chamber
When, it is sufficiently mixed with the atomizing fluids to flow back in in-line arrangement return port, improves and all the period of time of slug fluid is atomized, improve whole
The nebulization efficiency of body.
Specifically, the present invention has the advantages that the following:
1, the present invention is directed to the atomization of slug flow.Since slug flow gas-liquid mixed degree is not high, in conventional atomizers, when
Liquid section enters atomizer and easily causes atomization insufficient and influence subsequent atomizing effect.And in the present invention return port function
This problem of very good solution；
2, after the present invention is able to solve initial stage atomization, atomizer tail end, which generates hydrops, makes what atomizing effect substantially reduced to ask
Topic；
3, moving component is not present in spill type atmizer of the present invention, has stronger adaptability for bad working environments；
4, equipment used in the present invention is underground equipment, lower to ground environment requirement, is suitable for various ground environments；
5, the depth of falling well that the present invention adapts to is big.It can be transferred by Suspenoing apparatus to device to pit shaft designated position；
In conclusion it is the configuration of the present invention is simple, compact, it is not necessarily to extra power equipment, it is highly-safe, it is not necessarily in production process
Maintenance, cost is relatively low, energy conservation and environmental protection.The present invention uses supersonic atomization exhaust for the main method for excluding wellbore effusion, and
Solve the problem of that atomizer top generation hydrops makes atomization failure in use for some time for tradition atomization on the basis of this.This is asked
Topic will lead to pit shaft fluid-carrying capability and decline to a great extent, and make pit shaft can not drain.
Detailed description of the invention:
Fig. 1 is a kind of sectional view for the spill type atmizer being atomized for hydrops in the natural gas well of the present invention；
Fig. 2 is a kind of perspective view for the spill type atmizer being atomized for hydrops in the natural gas well of the present invention.
In figure, 1 is reverse-flow type jet pipe inner cavity chamber, and 2 be reverse-flow type jet stream tube cylinder, and 3 be natural gas pit shaft, and 4 be reflux
Annular space, 5 be return port, and 6 be nozzle trunnion, and 7 be sealing ring, and 8 be seal groove, and 9 be nozzle entrance section.
Specific embodiment:
The present invention is described in further details below with reference to specific example, it is described to be explanation of the invention rather than limit
It is fixed.
Referring to Fig. 1 and Fig. 2, a kind of spill type atmizer being atomized for hydrops in the natural gas well of the present invention, including reflux
Formula jet stream tube cylinder 2, the reverse-flow type jet stream tube cylinder 2 include nozzle entrance section 9 from the bottom up, nozzle trunnion 6, return port
5 and reverse-flow type jet pipe inner cavity chamber 1；The pipe diameter length of the nozzle entrance section 9 linearly reduces from the bottom to top；Nozzle trunnion
6 be straight barrel type；The pipe diameter length of 1 pipeline of reverse-flow type jet pipe inner cavity chamber linearly increases from the bottom up；Reverse-flow type jet stream socket
Several seal grooves 8 of 2 peripheral hardware of body, position are lower than 5 exit orifice of return port；It is equipped in each seal groove 8 in outer diameter and natural gas pit shaft 3
The identical sealing ring 7 of diameter, the sealing ring are anticorrosive rubber seal, and sealing ring can guarantee natural gas pit shaft 3 and reverse-flow type
The gas-liquid mixture to flow back in backflow ring annular space 4 between jet stream tube cylinder 2 with it is mutual by the slug flow below pit shaft by affected by high
It does not influence；Return port 5 is located at trunnion open height by tube wall aperture, and reflux hole mouth position is located at nozzle throat pipe end, successively to
Upper arrangement, material object is referring to fig. 2；Return port 5 can make 6 end of nozzle trunnion and reflux reflux annular space 4 and reverse-flow type jet pipe
1 end of inner cavity chamber is connected.
It should be noted that the device of the invention is applied to the atomization to slug flow in well.
The course of work of the invention are as follows:
Well mesohigh slug flow enters reverse-flow type jet stream tube cylinder 2 by nozzle entrance section 9, reaches super in nozzle trunnion 6
Velocity of sound；Fluid is by being sufficiently mixed generation atomizing；Atomizing fluids pass through 1 pressure x velocity liter of reverse-flow type jet pipe inner cavity chamber
Height, outflow atomizer rise along natural gas pit shaft 3；When atomizing fluids rise, since fluid contacts 3 wall surface of natural gas pit shaft,
One layer of liquid film can be formed in 3 wall surface of natural gas pit shaft；Since 1 tailer Fluid pressure of reverse-flow type jet pipe inner cavity chamber is compared with nozzle throat
6 end of pipe is high, therefore the formation office in the connection formed by return port 5, reflux 4 reverse-flow type jet pipe inner cavity chamber of annular space, 1 tail portion
The inverse pressure in portion, therefore, the atomizing fluids of 1 tail portion of reverse-flow type jet pipe inner cavity chamber can be by the film condensation of 3 wall surface of natural gas pit shaft
Volume is taken, and enters reflux reflux annular space 4 together, back flows back into 6 end of nozzle trunnion by return port 5 and be atomized.In previous mist
Change in device experiment and use, atomizing fluids are not slug fluids, and atomizing functions of the present invention are mainly for slug flow.Work as slug
Liquid section enters in nozzle trunnion 6 in stream, enters nozzle trunnion 6 by the atomizing fluids flowed into return port 5 at this time, mixed with liquid section
It closes, gas needed for ensure that atomization keeps atomization more abundant.
Since atomizing fluids contact to form liquid film in uphill process with wellbore wall, with the growth of time, liquid film is thick
Degree constantly increases, and finally forms hydrops in atomizer upper end, substantially reduces atomizing effect.And in the present invention, due to reflux
The effect of atomization makes the liquid film of well bore wall constantly be atomized fluid volume and takes and be atomized again, therefore liquid film can't be unconfined
Accumulation, improves nebulization efficiency.
Claims (5)
1. a kind of spill type atmizer being atomized for hydrops in the natural gas well, which is characterized in that including reverse-flow type jet stream socket
Body (2), the reverse-flow type jet stream tube cylinder (2) is interior to be followed successively by nozzle entrance section (9), nozzle trunnion (6) and reverse-flow type from bottom to top
Jet pipe inner cavity chamber (1)；Wherein,
Nozzle entrance section (9) is by down toward upper linear reduced type Taper Pipe, nozzle trunnion (6) is straight tube, reverse-flow type jet stream tube cavity
Room (1) is by down toward upper linear increase type Taper Pipe；On reverse-flow type jet stream tube cylinder (2) barrel at nozzle trunnion (6) under
Several return ports (5) being connected with nozzle trunnion (6) end are offered on and；
Return port (5) on reverse-flow type jet stream tube cylinder (2) barrel offers three from top to bottom and flows back to discharge orifice (5), and each row is equal
Including equal height and symmetrically arranged two return ports (5)；
Several seal grooves (8) are offered from bottom to top on reverse-flow type jet stream tube cylinder (2) outer wall at nozzle entrance section (9),
When work, spill type atmizer setting is in natural gas pit shaft (3), between spill type atmizer and natural gas pit shaft (3) inner wall
There are reflux annular space (4), and by being arranged in several seal grooves (8) between spill type atmizer and natural gas pit shaft (3) inner wall
Interior sealing ring (7) sealing；
The taper of nozzle entrance section (9) is 1:1.5~2；
The internal diameter of nozzle trunnion (6) is 1~3mm；
The taper of reverse-flow type jet pipe inner cavity chamber (1) is 1:2~4；
Reflux annular space (4) distance between spill type atmizer and natural gas pit shaft (3) inner wall is 1~2.5mm.
2. a kind of spill type atmizer being atomized for hydrops in the natural gas well according to claim 1, which is characterized in that
Angle between two return ports (5) of each row is 180 °.
3. a kind of spill type atmizer being atomized for hydrops in the natural gas well according to claim 1, which is characterized in that
The aperture of each return port (5) is 1~3mm.
4. a kind of spill type atmizer being atomized for hydrops in the natural gas well according to claim 1, which is characterized in that
It is located at reverse-flow type jet stream tube cylinder (2) outer wall positioned at the lowermost return port (5) apertura lateralis, with nozzle trunnion (6) arrival end position
In same section；It is located at reverse-flow type jet stream tube cylinder (2) inner sidewall positioned at the lowermost return port (5) inboard aperture, with nozzle throat
Pipe (6) outlet end is located at same section；Three flow back to discharge orifice is arranged with equal height, i.e., unilateral one group of return port (5) is penetrated with reverse-flow type
Flow tube cylinder body outer wall angle is identical, equidistantly arranges from bottom to top between unilateral one group of the apertura lateralis of return port (5).
5. a kind of spill type atmizer being atomized for hydrops in the natural gas well according to claim 1, which is characterized in that
When work, the mixed gas of natural gas and hydrops is depressured raising speed to enter at a high speed, in nozzle entrance section (9), in nozzle trunnion (6)
Place reaches critical speed, and fluid-mixing leaves nozzle trunnion (6), and diffusion is atomized afterwards；The liquid granule impact natural gas well in atomizing fluids
Cylinder (3) tube wall forms liquid film, and atomizing fluids boosting in reverse-flow type jet pipe inner cavity chamber (1) takes liquid film volume into backflow ring
Gap (4) enters nozzle trunnion (6) end by return port (5) and is atomized again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019137.0A CN105642466B (en) | 2016-01-12 | 2016-01-12 | A kind of spill type atmizer being atomized for hydrops in the natural gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019137.0A CN105642466B (en) | 2016-01-12 | 2016-01-12 | A kind of spill type atmizer being atomized for hydrops in the natural gas well |
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| CN105642466A CN105642466A (en) | 2016-06-08 |
| CN105642466B true CN105642466B (en) | 2018-12-07 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761608B (en) * | 2017-01-11 | 2022-11-18 | 山东科技大学 | Liquid drainage and gas production device and method for natural gas underground gas storage |
| CN107060696A (en) * | 2017-03-21 | 2017-08-18 | 宁夏嘉润石油工程技术有限公司 | A kind of pneumatic water drainage gas production device and its application method |
| CN107083941B (en) * | 2017-06-29 | 2019-09-03 | 西南石油大学 | Ultrasonic atomization pipe nipple apparatus |
| CN111495670B (en) * | 2020-04-16 | 2021-07-23 | 中国石油集团渤海钻探工程有限公司 | Supersonic atomizing throttler device with self-excited oscillation mode |
| CN111502612A (en) * | 2020-04-16 | 2020-08-07 | 上海交通大学 | Water drainage gas production device based on supersonic velocity jet atomization |
| CN111701740B (en) * | 2020-05-18 | 2021-11-19 | 西安交通大学 | Foam atomizer, shaft structure and gas production method for gas well foam drainage gas production |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6059040A (en) * | 1997-09-19 | 2000-05-09 | Levitan; Leonid L. | Method and apparatus for withdrawal of liquid phase from wellbores |
| WO2006043911A1 (en) * | 2004-10-18 | 2006-04-27 | Zakharchenko Sergiy Gennadevic | Cavitation nozzle |
| WO2007139541A1 (en) * | 2006-05-30 | 2007-12-06 | Sorowell Production Services Llc | Device for improving oil and gas recovery in wells |
| CN101509795B (en) * | 2008-02-15 | 2012-02-22 | 天津瑞吉德科技有限公司 | On-line instant measuring method and apparatus for oil-gas-water three phase flow quantity |
| CN102797437A (en) * | 2011-05-23 | 2012-11-28 | 中国石油大学(北京) | Underground atomizer for liquid discharging in gas well |
| CN103233923B (en) * | 2013-04-18 | 2015-08-26 | 西安交通大学 | A kind of lead-jetting device getting rid of pit shaft hydrops |
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