CN108166955A - A kind of movable type gas lift liquid drainage reservoir protection speed column and method - Google Patents
A kind of movable type gas lift liquid drainage reservoir protection speed column and method Download PDFInfo
- Publication number
- CN108166955A CN108166955A CN201810041025.4A CN201810041025A CN108166955A CN 108166955 A CN108166955 A CN 108166955A CN 201810041025 A CN201810041025 A CN 201810041025A CN 108166955 A CN108166955 A CN 108166955A
- Authority
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- China
- Prior art keywords
- gas
- gas lift
- speed column
- oil pipe
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000012856 packing Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000001914 calming effect Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 88
- 241000521257 Hydrops Species 0.000 description 6
- 206010030113 Oedema Diseases 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
- E21B43/123—Gas lift valves
Abstract
The present invention provides a kind of mobile gas lift liquid drainage reservoir protection speed column and method, device include the packaged type speed column being arranged in oil pipe and the multistage gas lift valve being successively set on from top to bottom in speed column and unidirectionally controlled packer；Guard method, will be in the mobile gas lift liquid drainage reservoir protection speed column tripping in oil pipe of above-mentioned any one；During gaslift is implemented, unidirectionally controlled packer blocks the space sealing in speed column outer oil pipe, and the liquid above gas lift valve is lifted out；After liquid discharge, the liquid in oil pipe enters liquid level decline in oil pipe above unidirectionally controlled packer from gas-bearing formation through gas-liquid channel, starts gas lift liquid drainage next time, realizes reservoir protection.The present invention adds multistage gas lift valve and improves gas lift liquid drainage efficiency, realizes and seals by packing element and spool during gas lift liquid drainage, high pressure gas lifts liquid through gas lift valve.
Description
Technical field
The present invention relates to the gas well tubing string in gas field development field, specially a kind of mobile gas lift liquid drainage reservoir protection speed
Tubing string and method.
Background technology
There are hydrops for Wellbore of Gas Wells, undoubtedly influence its normal production, while pollute gas-bearing formation, further reduce gas well deliverability.
When gas well is gone into operation, multistage gas lift valve is installed in oil pipe, production is gradually serious to later stage hydrops situation, utilizes gas lift liquid drainage
Skills classification smoothly discharges oil pipe hydrops, is to realize a kind of important measures that hydrops watered-out well reproduces.Existing gas lift liquid drainage skill
Art has two：1st, after in high pressure gas injection gas well, while realizing that gas lifts liquid, also there are a large amount of liquids and gases
Reservoir is injected by counter since high pressure is acted on, it is bad so as to cause gas lift efficiency, reservoir is polluted, wastes energy.2nd, it is this
Gas lift liquid drainage technology, which can be only applied to, to be mounted in the gas well of gas lift valve, since tubing string is fixedly mounted, it is impossible to it is mobile, lack
Flexibility.
Invention content
For problems of the prior art, the present invention provides a kind of mobile gas lift liquid drainage reservoir protection speed column
And method, it had not only realized gaslift and has protected reservoir, but also can more wells, multiple flexible Application in the process.
The present invention is to be achieved through the following technical solutions：
A kind of movable type gas lift liquid drainage reservoir protection speed column, the speed pipe being arranged on including packaged type in oil pipe
Column and the multistage gas lift valve being successively set on from top to bottom in speed column and unidirectionally controlled packer；The unidirectional control
Packer processed is for the gap in gaslift between sealing speed column and oil pipe, and the company of offer after high pressure gas injects gas well
Lead to the gas-liquid channel of unidirectionally controlled packer top and the bottom.
Preferably, the multistage gas lift valve is equally arranged on the side wall of speed column.
Preferably, unidirectionally controlled packer includes the control valve and seal that set gradually from top to bottom；
The control valve includes spool and spring and the valve seat in annular shape setting；Spool gas is offered in valve seat
Hole, spring are used to spool compressing sealed valve core stomata；
The seal includes the cartridge in circular setting, is provided in cartridge and is connected with spool stomata
Lower venthole；Palette is on tube inner wall outside cartridge.
Further, top connection is further included；The upper end of top connection is connect with speed column, and lower end is connect with valve seat, corresponding
The part of spool stomata offers the upper vent hole communicated therewith；The both ends of spring connect top connection and spool respectively.
Further, top connection is connected with speed column in male and female head to inserting.
Further, lower contact is further included；The upper end of lower contact is connect with cartridge, and lower end connects with speed column
It connects.
Further, lower contact is connected with speed column in male and female head to inserting.
A kind of movable type gas lift liquid drainage reservoir protection method, by the mobile gas lift liquid drainage reservoir protection of above-mentioned any one
In speed column tripping in oil pipe；
During gaslift is implemented, unidirectionally controlled packer blocks the space sealing in speed column outer oil pipe so that
High pressure gas in oil pipe and speed column annular space is injected all by multistage gas lift valve admission velocity tubing string, it will be on gas lift valve
The liquid of side lifts out；
After liquid discharge, under gas pressure effect, the liquid in oil pipe enters unidirectionally controlled from gas-bearing formation through gas-liquid channel
Liquid level declines in oil pipe above packer, starts gas lift liquid drainage next time, realizes reservoir protection.
Preferably, when unidirectionally controlled packer blocks the space sealing in speed column outer oil pipe, cartridge is in height
It is closely attached on tube inner wall under body of calming the anger effect, spool is located at valve seat upper sealing valve core stomata, upper vent hole and spool gas
The gas passage that hole and lower venthole are formed is blocked.
Preferably, the liquid in oil pipe from gas-bearing formation through gas-liquid channel enter unidirectionally controlled packer above when, spool rising
Compressed spring, the liquid in oil pipe enter through lower venthole, spool stomata and upper vent hole on unidirectionally controlled packer from gas-bearing formation
Square, liquid level declines in oil pipe, starts gas lift liquid drainage next time.
Compared with prior art, the present invention has technique effect beneficial below：
Movable type gas lift liquid drainage reservoir protection speed column of the invention is suitable in all oil pipes and oil pipe and casing annulus
Individual layer section, multi-section multi-layer production gas well there are hydrops.Pass through packaged type speed column so that tubing string is no longer fixedly installed to well
In cylinder, gas lift liquid drainage efficiency is improved using multistage gas lift valve is added, using unidirectionally controlled packer, high pressure gas is blocked in gas injection
Liquid injects gas-bearing formation, avoids reservoir pollution, and when gaslift realizes the sealing to gas-liquid channel, realizes the promotion of liquid.Its is simple in structure,
Applied widely, each component can bear high pressure, suitable for working in deep-well or high-pressure gas well, can be used for adopting in inclined shaft
Gas.It also is able to removable reuse, maneuverability.When gas well needs gaslift operation, by the tubing string tripping in oil pipe, operation is complete
It can be taken off, reusable, maneuverability.
Further, reliable external seal is formed by cartridge and tubing wall, spool is located on valve core case, tight to seal
Interior sealing is realized every living in underlying gas；Not only packing is convenient, but also sealed reliable.
Method of the present invention is easy to operate, easy to use, is not required to external force；Packing element and spool are leaned on during gas lift liquid drainage
Realize sealing, high pressure gas lifts liquid through gas lift valve；By reservoir self-energy in operation process, spool is opened under differential pressure action,
Gas-liquid channel is opened, it is easy to use.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
In figure：1. level-one gas lift valve, 2. two level gas lift valves, 3. three-level gas lift valves, 4. speed columns, 5. top connections, 6. oil
It manages, 7. upper vent holes, 8. springs, 9. spool stomatas, 10. spools, 11. valve seats, 12. cartridges, 13. times ventholes, under 14.
Connector.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
A kind of mobile gas lift liquid drainage reservoir protection speed column of the present invention, as shown in Figure 1, including speed column 4, multistage
Gas lift valve, top connection 5, spring 8, spool 10, valve seat 11, cartridge 12 and lower contact 14.4 top of speed column is connected with more
Grade gas lift valve, the connection of top connection 5 top speed pipe, the connection of lower contact 14 lower section speed pipe, in 4 tripping in oil pipe of speed column.On
Venthole 7 forms gas-liquid channel with spool stomata 9, lower venthole 13, and the channel is opening state during gas well liquid loading, can
Realize that speed column 4 is connected with oil pipe；Speed column 4 is fitted tightly on 6 wall of oil pipe by cartridge 12 during gaslift, valve
Be located on valve seat 11 under 10 normal condition of core, cartridge 12 is put upper and lower gas passage and is blocked, avoid high pressure gas and
Liquid is counter during liquid is lifted to inject reservoir, and reservoir is polluted, and wastes energy.It is used at equal intervals successively in this preferred embodiment
Level-one gas lift valve 1, two level gas lift valve 2 and the three-level gas lift valve 3 of setting.
A kind of mobile gas lift liquid drainage reservoir protection method of the present invention, is stored up using mobile gas lift liquid drainage of the present invention
Layer protection speed column.It will be in its tripping in oil pipe 6；
During gaslift is implemented, unidirectionally controlled packer blocks the space sealing in 4 outer oil pipe 6 of speed column, makes
High pressure gas in oil pipe and speed column annular space must be injected all by multistage gas lift valve admission velocity tubing string 4, by gaslift
Liquid above valve lifts out；
After liquid discharge, under gas pressure effect, oil pipe is with the liquid in casing annulus and oil pipe from gas-bearing formation through gas-liquid
Channel enters above unidirectionally controlled packer, and oil pipe declines with liquid level in casing annulus and oil pipe, starts gas lift liquid drainage next time,
Realize reservoir protection.
Specifically, gas well liquid loading is to the later stage, when hydrops seriously causes the water logging to stop production, need that gas lift liquid drainage is taken to reproduce skill
Art.By the gas lift valves such as level-one gas lift valve 1, two level gas lift valve 2, three-level gas lift valve 3, top connection 5, lower contact 14 by mobile gaslift
After drain reservoir protection speed column 4 is vertically connected with, in tripping in oil pipe.During gaslift is implemented, cartridge 12 is in high pressure
It is closely attached on 6 inner wall of oil pipe under gas effect, spool 10 is located on valve seat 11, upper vent hole 7 and spool stomata 9 and lower logical
The gas passage that stomata 13 is formed is blocked so that injection oil pipe all passes through multistage with the high pressure gas in speed column annular space
In gas lift valve admission velocity tubing string 4, the liquid above gas lift valve continually is lifted out.After liquid discharge, in gas-bearing formation pressure
Under power effect, since the device has unidirectionally controlled function, spool 10 rises compressed spring 8, oil pipe and casing annulus and oil pipe
Interior liquid enters through lower venthole 13, spool stomata 9, upper vent hole 7 above unidirectionally controlled packer from gas-bearing formation, oil pipe and set
Liquid level declines in pipe ring sky and oil pipe, starts gas lift liquid drainage next time.After the completion of liquid all lifts, take-off speed tubing string 4, gas
Well starts normally to produce.
The present invention is easy to operate, moves and reuses, and maneuverability has saved production cost, avoided gaslift process liquid
Body pollution reservoir and high-pressure air source energy dissipation ensure that normally production is suitable for all kinds of high and low pressure gas wells to gas well.
Claims (10)
1. a kind of movable type gas lift liquid drainage reservoir protection speed column, which is characterized in that be arranged on oil pipe (6) including packaged type
In speed column (4) and the multistage gas lift valve being successively set on from top to bottom in speed column (4) and unidirectionally controlled packing
Device；The unidirectionally controlled packer is used to seal the gap between speed column (4) and oil pipe (6) in gaslift, and in height
The gas-liquid channel for connecting unidirectionally controlled packer top and the bottom is provided after body of calming the anger injection gas well.
2. a kind of mobile gas lift liquid drainage reservoir protection speed column according to claim 1, which is characterized in that described
Multistage gas lift valve is equally arranged on the side wall of speed column (4).
A kind of 3. mobile gas lift liquid drainage reservoir protection speed column according to claim 1, which is characterized in that unidirectional control
Packer processed includes the control valve and seal that set gradually from top to bottom；
The control valve includes spool (10) and spring (8) and the valve seat (11) in annular shape setting；It is opened in valve seat (11)
Equipped with spool stomata (9), spring (8) by spool (10) for compressing sealed valve core stomata (9)；
The seal includes the cartridge (12) in circular setting, is provided with and spool stomata in cartridge (12)
(9) the lower venthole (13) of connection；The external palette of cartridge (12) is on oil pipe (6) inner wall.
4. a kind of mobile gas lift liquid drainage reservoir protection speed column according to claim 3, which is characterized in that further include
Top connection (5)；The upper end of top connection (5) is connect with speed column (4), and lower end is connect with valve seat (11), corresponding spool stomata (9)
Part offer the upper vent hole (7) communicated therewith；The both ends of spring (8) connect top connection (5) and spool (10) respectively.
A kind of 5. mobile gas lift liquid drainage reservoir protection speed column according to claim 4, which is characterized in that top connection
(5) it is connected with speed column (4) in male and female head to inserting.
6. a kind of mobile gas lift liquid drainage reservoir protection speed column according to claim 3, which is characterized in that further include
Lower contact (14)；The upper end of lower contact (14) is connect with cartridge (12), and lower end is connect with speed column (4).
A kind of 7. mobile gas lift liquid drainage reservoir protection speed column according to claim 6, which is characterized in that lower contact
(14) it is connected with speed column (4) in male and female head to inserting.
A kind of 8. movable type gas lift liquid drainage reservoir protection method, which is characterized in that will be as described in claim 1-7 any one
In mobile gas lift liquid drainage reservoir protection speed column tripping in oil pipe (6)；
During gaslift is implemented, unidirectionally controlled packer blocks the space sealing in speed column (4) outer oil pipe (6), makes
It is all interior by multistage gas lift valve admission velocity tubing string (4) with the high pressure gas in speed column annular space that oil pipe must be injected, by gas
The liquid above valve is lifted to lift out；
After liquid discharge, under gas pressure effect, the liquid in oil pipe enters unidirectionally controlled packing from gas-bearing formation through gas-liquid channel
Liquid level declines in oil pipe above device, starts gas lift liquid drainage next time, realizes reservoir protection.
A kind of 9. mobile gas lift liquid drainage reservoir protection method according to claim 8, which is characterized in that unidirectionally controlled envelope
When device blocks the space sealing in speed column (4) outer oil pipe (6), cartridge (12) is close under high pressure gas effect
It is attached on oil pipe (6) inner wall, spool (10) is located at valve seat (11) upper sealing valve core stomata (9), upper vent hole (7) and spool gas
The gas passage that hole (9) and lower venthole (13) are formed is blocked.
10. a kind of mobile gas lift liquid drainage reservoir protection method according to claim 8, which is characterized in that in oil pipe
Liquid from gas-bearing formation enter above unidirectionally controlled packer through gas-liquid channel when, spool (10) rising compressed spring (8), in oil pipe
Liquid enters through lower venthole (13), spool stomata (9) and upper vent hole (7) above unidirectionally controlled packer from gas-bearing formation, oil pipe
Interior liquid level declines, and starts gas lift liquid drainage next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041025.4A CN108166955A (en) | 2018-01-16 | 2018-01-16 | A kind of movable type gas lift liquid drainage reservoir protection speed column and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041025.4A CN108166955A (en) | 2018-01-16 | 2018-01-16 | A kind of movable type gas lift liquid drainage reservoir protection speed column and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108166955A true CN108166955A (en) | 2018-06-15 |
Family
ID=62514913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810041025.4A Pending CN108166955A (en) | 2018-01-16 | 2018-01-16 | A kind of movable type gas lift liquid drainage reservoir protection speed column and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108166955A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608010A (en) * | 2019-09-16 | 2019-12-24 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Permanent packer and extending gas lift method adopting permanent packer |
| WO2021052360A1 (en) * | 2019-09-16 | 2021-03-25 | 中国石油天然气股份有限公司 | Permanent packer and extended gas lift method employing permanent packer |
| CN113090231A (en) * | 2021-04-22 | 2021-07-09 | 新疆瀚科油气技术服务有限公司 | Gas lift drainage and gas production integrated speed pipe column and operation process thereof |
| RU2784424C1 (en) * | 2019-09-16 | 2022-11-24 | Петрочайна Компани Лимитед | Stationary packer and gaslift method using a stationary packer |
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| CN203559876U (en) * | 2013-10-29 | 2014-04-23 | 中国石油化工股份有限公司 | Closed gas-lift liquid discharge combined tubing string for low-pressure oil and gas well |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110608010A (en) * | 2019-09-16 | 2019-12-24 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Permanent packer and extending gas lift method adopting permanent packer |
| WO2021052360A1 (en) * | 2019-09-16 | 2021-03-25 | 中国石油天然气股份有限公司 | Permanent packer and extended gas lift method employing permanent packer |
| RU2784424C1 (en) * | 2019-09-16 | 2022-11-24 | Петрочайна Компани Лимитед | Stationary packer and gaslift method using a stationary packer |
| CN113090231A (en) * | 2021-04-22 | 2021-07-09 | 新疆瀚科油气技术服务有限公司 | Gas lift drainage and gas production integrated speed pipe column and operation process thereof |
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