CN109139110B - Underground rock salt energy storage cavern is water-soluble to make chamber breakage-proof tubular column system - Google Patents
Underground rock salt energy storage cavern is water-soluble to make chamber breakage-proof tubular column system Download PDFInfo
- Publication number
- CN109139110B CN109139110B CN201811030491.9A CN201811030491A CN109139110B CN 109139110 B CN109139110 B CN 109139110B CN 201811030491 A CN201811030491 A CN 201811030491A CN 109139110 B CN109139110 B CN 109139110B
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- Prior art keywords
- breakage
- making
- rock salt
- storage cavern
- soluble
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/16—Modification of mine passages or chambers for storage purposes, especially for liquids or gases
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Abstract
Chamber breakage-proof tubular column system is made the present invention relates to a kind of underground rock salt energy storage cavern is water-soluble, system include coaxially and from inside to outside set gradually make intracavitary pipe, make chamber outer tube and production casing, the upper end for making intracavitary pipe and the upper end for making chamber outer tube are fixed and expose earth's surface, in the rock salt storage cavern for the lower section that lubricating pad is arranged in the lower end for making intracavitary pipe, multiple sieve pores are provided on the tube wall of screen casing, the lower end for making chamber outer tube is sequentially coaxially arranged in screen casing and extension, to form breakage-proof tubing string, centralizer is arranged between the lower end of breakage-proof tubing string and the lower end for making intracavitary pipe.The rigidity made chamber outer tube and make intracavitary pipe not only can be improved in the present invention, improve the globality of tubular column system, it can also protect intracavitary pipe is made, enhancing is by making chamber outer tube and that makes that intracavitary pipe forms makes lumen column self power stability, in the case that liquid caused by self-excited vibration couples dynamic buckling admittedly in restricted clearance to preventing to make lumen column, the unstabilitys accident such as severe bends or breakage occurs.
Description
Technical field
The invention belongs to energy extraction technical field more particularly to a kind of underground rock salt energy storage cavern is water-soluble makes chamber breakage-proof
Tubular column system.
Background technique
On our times, using rock salt cavern carry out energy underground storage using increasing, China pushes greatly
Community of Jin Tan County underground rock salt gas storage demonstration project is successfully built and has been runed in the rock salt strategic reserves of energy plan of row underground.
It is generally used in the construction of China's rock salt storage cavern and salt well accident in water soluble method technique, the especially construction of rock salt storage cavern,
Chamber technique is made frequently with individual well lubricating pad method is water-soluble, during making chamber, often will appear and make the engineering problems such as lumen column failure in bending,
Lumen column will normally be made by, which leading to not, proposes to ground, when serious, take pipe cutting measure that will make lumen column and gives up in intracavitary.Make chamber
The engineering problems such as drilling pipe bending breakage not only increase rock salt storage cavern and make chamber cost, and seriously affect and make chamber progress and cavity
Form control.
The water-soluble chamber of making of rock salt is a dynamic fluid structurecoupling process, is made between lumen column and its fresh water and brine for conveying
Interaction, shows that making lumen column liquid caused by self-excited vibration in restricted clearance to couple dynamic buckling admittedly is to lure after study
The main reason for severe bends or breakage, occurs for conductor string, it is therefore necessary to take breakage-proof to make lumen column system, with enhancing
Tubing string self power character constancy, bend to preventing to make lumen column in practical process of construction the unstabilitys thing such as breakage
Therefore.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides a kind of water-soluble chambers of making of underground rock salt energy storage cavern to prevent breaking
Tubular column system is damaged, lumen column engineering accident is made for underground rock salt energy storage cavern and a kind of risk prevention instruments is provided.
The present invention through the following technical solutions to achieve the above objectives:
A kind of underground rock salt energy storage cavern is water-soluble to make chamber breakage-proof tubular column system, and the system comprises coaxially and from inside to outside
What is set gradually makes intracavitary pipe, makes chamber outer tube and production casing, the upper end for making intracavitary pipe and the upper end for making chamber outer tube
Fix and expose earth's surface, the lower end for making intracavitary pipe is arranged in the rock salt storage cavern of the lower section of lubricating pad, it is described make chamber outer tube and
The lower end of the production casing is located at the top of the lubricating pad, is formed between the lower end of the production casing and the lubricating pad naked
Well, which is characterized in that
The system also includes screen casing, extension and centralizer, multiple sieve pores, institute are provided on the tube wall of the screen casing
It states screen casing and the lower end for making chamber outer tube is sequentially coaxially arranged in the extension, it is described anti-to form breakage-proof tubing string
Damaged tubing string passes through the lubricating pad, and enters in the rock salt storage cavern, and the lower end of the breakage-proof tubing string is made not less than described
The lower end of intracavitary pipe, the centralizer are arranged between the lower end of the breakage-proof tubing string and the lower end for making intracavitary pipe.
Preferably, the length of the screen casing be positioned at made described in the lower section of the lubricating pad intracavitary length of tube five/
One.
Preferably, the sieve pore distributes as net shape on the tube wall of the screen casing 5.
Preferably, the shape of the sieve pore is round, ellipse and rectangular one kind or combination.
Further, the first screw thread, the upper end setting of the screen casing are provided on the outer wall of the lower end for making chamber outer tube
There is first sleeve, the lower end for making chamber outer tube is connected to institute by the matching thread of first screw thread and the first sleeve
State the upper end of screen casing.
Further, the second screw thread is provided on the outer wall of the lower end of the screen casing, the upper end of the extension is provided with
The lower end of second sleeve, the screen casing is connected to the extension by the matching thread of second screw thread and the second sleeve
The upper end of pipe.
Optionally, it the lower end of the extension and described make intracavitary pipe lower end and flushes setting.
Optionally, the lower end of the extension is higher than the lower end for making intracavitary pipe, the lower end of the extension and described
The difference in height for making the lower end of intracavitary pipe is 20cm to 30cm.
Further, the centralizer is provided with multiple, and multiple centralizers make the axially spaced-apart of intracavitary pipe described in
It is arranged between the lower end of the extension and the lower end for making intracavitary pipe.
Further, the centralizer includes the first hoop, the second hoop and multiple elastic strips, wherein described the
One hoop and second hoop interval are made on intracavitary pipe described in being fixed at, and first hoop and second hoop
It is connected by multiple elastic strips, each elastic strip at least has an arc convex, and the arc convex top is located at institute
It states on the inner wall of extension.
The beneficial effects of the present invention are:
A kind of underground rock salt energy storage cavern of the invention is water-soluble to make chamber breakage-proof tubular column system, due to screen casing and extension
The lower end for making chamber outer tube is sequentially coaxially set, and to form breakage-proof tubing string, and breakage-proof tubing string passes through lubricating pad, and enters salt
In rock storage cavern, the lower end of breakage-proof tubing string is not less than the lower end for making intracavitary pipe, centralizer be arranged in breakage-proof tubing string lower end and
Between the lower end for making intracavitary pipe, the rigidity made chamber outer tube He make intracavitary pipe not only can be improved, the whole of tubular column system is improved
Body can also be protected intracavitary pipe is made, and enhancing is by making chamber outer tube and that makes that intracavitary pipe forms makes lumen column self power
The case where character constancy, liquid caused by self-excited vibration couples dynamic buckling admittedly in restricted clearance to preventing to make lumen column
Under, the unstabilitys accident such as severe bends or breakage occurs.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is that a kind of water-soluble result for making chamber breakage-proof tubular column system of underground rock salt energy storage cavern of the embodiment of the present invention is shown
It is intended to；
Fig. 2 is the structural schematic diagram of the screen casing in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the centralizer in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is that a kind of water-soluble result for making chamber breakage-proof tubular column system of underground rock salt energy storage cavern of the embodiment of the present invention is shown
Be intended to, referring to Fig. 1, the system include coaxially and from inside to outside set gradually make intracavitary pipe 2, make chamber outer tube 1 and production casing
3, earth's surface is fixed and exposed in the upper end for making intracavitary pipe 2 and the upper end for making chamber outer tube 1, and lubricating pad 6 is arranged in the lower end for making intracavitary pipe 2
In the rock salt storage cavern 9 of lower section, the lower end for making chamber outer tube 1 and production casing 3 is located at the top of lubricating pad 6, the lower end of production casing 3 and
Open hole 4 is formed between lubricating pad 6.
Fig. 2 be the embodiment of the present invention in screen casing structural schematic diagram, in conjunction with Fig. 1 and Fig. 2, the system further include screen casing 5,
Extension 8 and centralizer 7 are provided with multiple sieve pores 10 on the tube wall of screen casing 5, and screen casing 5 and extension 8 are sequentially coaxially arranged
In the lower end for making chamber outer tube 1, to form breakage-proof tubing string, breakage-proof tubing string passes through lubricating pad 6, and enters in rock salt storage cavern 9, prevents
The lower end of damaged tubing string is not less than the lower end for making intracavitary pipe 2, and centralizer 7 is arranged in the lower end of breakage-proof tubing string and makes intracavitary pipe 2
Lower end between.
A kind of underground rock salt energy storage cavern of the embodiment of the present invention is water-soluble to make chamber breakage-proof tubular column system, due to screen casing and
The lower end for making chamber outer tube is sequentially coaxially arranged in extension, and to form breakage-proof tubing string, and breakage-proof tubing string passes through lubricating pad, goes forward side by side
Enter into rock salt storage cavern, the lower end of breakage-proof tubing string is not less than the lower end for making intracavitary pipe, and breakage-proof tubing string is arranged in centralizer
Between lower end and the lower end for making intracavitary pipe, the rigidity made chamber outer tube He make intracavitary pipe not only can be improved, improves tubing string system
The globality of system can also be protected intracavitary pipe is made, enhancing by make chamber outer tube and make that intracavitary pipe forms make lumen column from
Body dynamic characteristics stability couples dynamic buckling to prevent to make lumen column liquid caused by self-excited vibration in restricted clearance admittedly
In the case of, the unstabilitys accident such as severe bends or breakage occurs.
In the embodiment of the present invention, the lower end of production casing 3 need to be located under earth's surface at certain depth, the buried depth of production casing 3
Meet manufacturing requirements, the lower end for making chamber outer tube 1 need to be located at a certain distance from the top of lubricating pad 6, to prevent lubricating pad 6 from making chamber
It is overflowed inside outer tube 1.
In the embodiment of the present invention, screen casing 5 can be identical with model with the tubing made chamber outer tube 1 with make intracavitary pipe 2, with convenient
Materials processing and manufacturing.
In the embodiment of the present invention, the length of screen casing 5 is make intracavitary 2 length of pipe 1/5th positioned at the lower section of lubricating pad 6
Left and right, preferably 1/5th, the water outlet speed conditions that specific length can make chamber scene according to rock salt storage cavern are adjusted.
In conjunction with Fig. 2, in the embodiment of the present invention, on the grid-shaped tube wall for being evenly distributed on screen casing 5 of sieve pore 10, and sieve pore 10
Shape be round, ellipse and rectangular one kind or combination, in this way, the object entered in breakage-proof tubing string can be filled into,
The solid blockade for preventing volume excessive is being made between intracavitary outer tube.
When the shape of sieve pore 10 is round, size can be the 1%-2% of screen casing diameter, when sieve pore 10 is other shapes
When shape, size is similar with the size of circular sieve pore 10, the embodiment of the present invention to this with no restriction.
In the embodiment of the present invention, the distribution density of sieve pore 10 be should not be too large, to ensure the overall stiffness of screen casing 5.
Further, it makes and is provided with the first screw thread on the outer wall of the lower end of chamber outer tube 1, the upper end of screen casing 5 is provided with first
Sleeve, the lower end for making chamber outer tube 1 are connected to the upper end of screen casing 5 by the matching thread of the first screw thread and first sleeve, to realize
The connection of chamber outer tube 1 and screen casing 5 is made, the embodiment of the present invention, will not since screen casing 5 to be arranged near the nozzle for making chamber outer tube 1
It makes chamber flow field to rock salt storage cavern to have an impact, to guarantee this underground rock salt energy storage cavern is water-soluble to make chamber breakage-proof tubular column system not
Can have an impact other Recessive elementSs for making chamber effect.
In the embodiment of the present invention, extension 8 can also be identical with model with the tubing made chamber outer tube 1 with make intracavitary pipe 2, with
Materials are facilitated to fabricate.
Further, in the embodiment of the present invention, be provided with the second screw thread on the outer wall of the lower end of screen casing 5, extension 8 it is upper
End is provided with second sleeve, and the lower end of screen casing 5 is connected to the upper of extension 8 by the matching thread of the second screw thread and second sleeve
End, to realize the connection of extension 8 and screen casing 5.
In the embodiment of the present invention, extension 8 can be spliced by multiple pipelines by above-mentioned connection type, with convenient
Construction.
In the embodiment of the present invention, the lower end of extension 8 and makes intracavitary 2 lower end of pipe and can flush setting, or, extension 8
Lower end is higher than the lower end for making intracavitary pipe 2, and the lower end of extension 8 and the difference in height for making the lower end of intracavitary pipe 2 are 20cm to 30cm.
In conjunction with Fig. 1, in the embodiment of the present invention, centralizer 7 can be set multiple, and multiple centralizers 7 are along making intracavitary pipe 2
It is arranged at axially spaced intervals between the lower end of extension 8 and the lower end for making intracavitary pipe 2.
Fig. 3 is the structural schematic diagram of the centralizer in the embodiment of the present invention, in conjunction with Fig. 3, in the embodiment of the present invention, and centralizer
7 may include the first hoop 7.1, the second hoop 7.2 and multiple elastic strips 7.3, wherein the first hoop 7.1 and the second hoop
7.2 intervals, which are fixed at, makes on intracavitary pipe 2, and the first hoop 7.1 and the second hoop 7.2 are connected by multiple elastic strips 7.3,
Each elastic strip 7.3 at least has an arc convex, and arc convex top is located on the inner wall of extension 8.
It is fixed due to making intracavitary pipe and making chamber outer tube upper end in the embodiment of the present invention, and makes intracavitary pipe lower end and prolong
It stretches and is provided with centralizer between pipe, make to make between intracavitary pipe and extension and form Elastic Contact, not only increase tubular column system
Globality, the rigidity for making intracavitary outer tube can also be increased so that in the presence of liquid couples the self-excited vibration of induction admittedly,
Vibration by a relatively large margin occurs for extension elasticity of compression item, the anti-intracavitary pipe of major structure, but when liquid couples the self-excited vibration of induction admittedly
After situation removal, elastic strip return restores to make to make intracavitary pipe to normal station.
In the embodiment of the present invention, the first hoop 7.1 and the second hoop 7.2 can be bolted on and make on intracavitary pipe 2,
Or made on intracavitary pipe 2 by the way that end is self-locking to realize to be fixed on, the embodiment of the present invention to this with no restriction.
The centralizer 7 of the embodiment of the present invention will not cause to wear to lumen column material is made, and intracavitary pipe is being made in the addition of centralizer 7
Between 2 and extension 8, rock salt storage cavern is not influenced and makes chamber flow field, so that guaranteeing that underground rock salt energy storage cavern is water-soluble makes chamber breakage-proof
Tubular column system will not have an impact other Recessive elementSs for making chamber effect.
When implementing, first in salt mine underground solution mining or the construction of rock salt storage cavern, bunged down first to target elevation,
Then well cementation forms production casing 3, still can remain with one section of open hole 4, will make chamber outer tube 1 and makes intracavitary pipe 2 and be arranged in production
In casing 3, screen casing 5 is connect with chamber outer tube 1 is made, is then sequentially connected extension 8, in extension 8 and made between intracavitary pipe 2
Annular space installs centralizer 7.
Flow into fresh water by making intracavitary pipe 2, make chamber outer tube 1, screen casing 5 and extension 8 export brine, or make chamber outer tube 1,
Screen casing 5 and extension 8 flow into fresh water, make intracavitary pipe 2 and export brine, are dissolved upwards using the limitation rock salt of lubricating pad 6 to control cavity
Form ultimately forms rock salt storage cavern 9.
Embodiment provided above is better embodiment of the invention, only is used to facilitate to illustrate the present invention, not to this hair
It is bright to make any form of restriction, have usually intellectual in any technical field, if not departing from the proposed skill of the present invention
In the range of art feature, using the equivalent embodiment for locally changing or modifying made by disclosed technology contents, and
Without departing from technical feature content of the invention, in the range of still falling within the technology of the present invention feature.
Claims (10)
1. a kind of underground rock salt energy storage cavern is water-soluble to make chamber breakage-proof tubular column system, the system comprises it is coaxial and from inside to outside according to
Secondary setting makes intracavitary pipe (2), makes chamber outer tube (1) and production casing (3), the upper end for making intracavitary pipe (2) and described makes chamber
Earth's surface is fixed and exposed in the upper end of outer tube (1), and rock salt of the lower end setting for making intracavitary pipe (2) in the lower section of lubricating pad (6) stores up
In library (9), the lower end for making chamber outer tube (1) and the production casing (3) is located at the top of the lubricating pad (6), the production
Open hole (4) are formed between the lower end and the lubricating pad (6) of casing (3), which is characterized in that
The system also includes screen casing (5), extension (8) and centralizer (7), it is provided on the tube wall of the screen casing (5) more
A sieve pore (10), the screen casing (5) and the extension (8) are sequentially coaxially arranged in the lower end for making chamber outer tube (1), with
Breakage-proof tubing string is formed, the breakage-proof tubing string passes through the lubricating pad (6), and enters in the rock salt storage cavern (9), described anti-
The breakage-proof tubing string is arranged in not less than the lower end for making intracavitary pipe (2), the centralizer (7) in the lower end of damaged tubing string
Between lower end and the lower end for making intracavitary pipe (2).
2. rock salt energy storage cavern in underground according to claim 1 is water-soluble to make chamber breakage-proof tubular column system, which is characterized in that institute
The length for stating screen casing (5) is to make 1/5th of intracavitary pipe (2) length positioned at the described of the lower section of the lubricating pad (6).
3. rock salt energy storage cavern in underground according to claim 2 is water-soluble to make chamber breakage-proof tubular column system, which is characterized in that institute
Sieve pore (10) is stated to distribute as net shape on the tube wall of the screen casing (5).
4. rock salt energy storage cavern in underground according to claim 3 is water-soluble to make chamber breakage-proof tubular column system, which is characterized in that institute
The shape of sieve pore (10) is stated as round, ellipse and rectangular one kind or combination.
5. rock salt energy storage cavern in underground according to claim 1 is water-soluble to make chamber breakage-proof tubular column system, which is characterized in that institute
It states and is provided with the first screw thread on the outer wall for making the lower end of chamber outer tube (1), the upper end of the screen casing (5) is provided with first sleeve, institute
It states and makes the lower end of chamber outer tube (1) screen casing (5) are connected to by the matching thread of first screw thread and the first sleeve
Upper end.
6. rock salt energy storage cavern in underground according to claim 1-5 is water-soluble to make chamber breakage-proof tubular column system, spy
Sign is, the second screw thread is provided on the outer wall of the lower end of the screen casing (5), and the upper end of the extension (8) is provided with second
The lower end of sleeve, the screen casing (5) is connected to the extension by the matching thread of second screw thread and the second sleeve
Manage the upper end of (8).
7. rock salt energy storage cavern in underground according to claim 1-5 is water-soluble to make chamber breakage-proof tubular column system, spy
Sign is that the lower end of the extension (8) and described intracavitary pipe (2) lower end of making flush setting.
8. rock salt energy storage cavern in underground according to claim 1-5 is water-soluble to make chamber breakage-proof tubular column system, spy
Sign is, the lower end of the extension (8) is higher than the lower end for making intracavitary pipe (2), the lower end of the extension (8) and described
The difference in height for making the lower end of intracavitary pipe (2) is 20cm to 30cm.
9. rock salt energy storage cavern in underground according to claim 1-5 is water-soluble to make chamber breakage-proof tubular column system, spy
Sign is, the centralizer (7) is provided with multiple, and multiple centralizers (7) set along the axially spaced-apart for making intracavitary pipe (2)
It sets between the lower end and the lower end for making intracavitary pipe (2) of the extension (8).
10. rock salt energy storage cavern in underground according to claim 9 is water-soluble to make chamber breakage-proof tubular column system, which is characterized in that
The centralizer (7) includes the first hoop (7.1), the second hoop (7.2) and multiple elastic strips (7.3), wherein described first
Hoop (7.1) and second hoop (7.2) interval are made on intracavitary pipe (2) described in being fixed at, and first hoop
(7.1) it is connected with second hoop (7.2) by multiple elastic strips (7.3), each elastic strip (7.3) at least has
One arc convex, the arc convex top are located on the inner wall of the extension (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030491.9A CN109139110B (en) | 2018-09-05 | 2018-09-05 | Underground rock salt energy storage cavern is water-soluble to make chamber breakage-proof tubular column system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030491.9A CN109139110B (en) | 2018-09-05 | 2018-09-05 | Underground rock salt energy storage cavern is water-soluble to make chamber breakage-proof tubular column system |
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| CN109139110A CN109139110A (en) | 2019-01-04 |
| CN109139110B true CN109139110B (en) | 2019-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811030491.9A Active CN109139110B (en) | 2018-09-05 | 2018-09-05 | Underground rock salt energy storage cavern is water-soluble to make chamber breakage-proof tubular column system |
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| CN111790703B (en) * | 2020-06-30 | 2022-03-25 | 中国石油大学(北京) | Cleaning tool and cleaning method for insoluble substances at bottom of salt cavern gas storage cavity |
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| CN109139110A (en) | 2019-01-04 |
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