CN216950332U - Concentric double-pipe separate-layer water injection string - Google Patents
Concentric double-pipe separate-layer water injection string Download PDFInfo
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- CN216950332U CN216950332U CN202220476346.9U CN202220476346U CN216950332U CN 216950332 U CN216950332 U CN 216950332U CN 202220476346 U CN202220476346 U CN 202220476346U CN 216950332 U CN216950332 U CN 216950332U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The utility model discloses a concentric double-pipe separate-layer water injection string, and relates to the technical field of water injection strings. The utility model comprises a shell, wherein a water injection mechanism and a separation mechanism are arranged in the shell; the water injection mechanism comprises a first communicating vessel, a second communicating vessel, a first oil pipe and a second oil pipe, the first oil pipe is arranged in the middle of the shell, the second oil pipe is arranged in the first oil pipe, the first water injection layer is arranged corresponding to the second communicating vessel, and the first communicating vessel is arranged corresponding to the second water injection layer; the separating mechanism comprises a first water injection packer, a second water injection packer, a packing ring and a sealing insertion pipe, the bottom end of the second oil pipe is fixedly connected with the sealing insertion pipe, and the outer side of the packing ring is fixedly connected with the second communicating vessel. According to the utility model, through the arrangement of the water injection mechanism and the separation mechanism, water can be injected separately, so that the impact on the tubular column caused by the mixing of water flows is avoided; effectively optimize the layering effect when water injection, improved the work efficiency of tubular column.
Description
Technical Field
The utility model belongs to the technical field of water injection pipe columns, and particularly relates to a concentric double-pipe separate-layer water injection pipe column.
Background
With the continuous exhaustion of oil and gas resources, the petroleum industry has increasingly demanded refinement of oil field development. The fine development requires reasonable injection and production of reservoirs, wherein the water injection by separate zones is an important means for fine development and ensuring stable yield and production increase. At present, layered injection technologies are more, technologies such as single-tube injection, double-tube concentric injection and double-tube separate injection are mainly adopted in the general, and the double-tube separate injection is suitable for most environments comprehensively, so that the production efficiency can be effectively improved.
The concentric double-pipe separate layer water injection pipe column on the current market generally injects water into the pipe column through two water injection layers, so that the working efficiency can be effectively improved, but some defects still exist.
The existing separate-layer water injection pipe column has poor separate-layer effect in practical application, different water flows are easily mixed together to impact the pipe column, so that the water injection pipe column is damaged, and the working efficiency of the water injection pipe column is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a concentric double-pipe separate layer water injection string, which solves the problems that in practical application, the separate layer effect of the existing separate layer water injection string is not very good, different water flows are easily mixed together to impact a string, so that the water injection string is damaged, and the working efficiency of the water injection string is influenced.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model relates to a concentric double-pipe separate-layer water injection string which comprises a shell, wherein a water injection mechanism and a separation mechanism are arranged in the shell;
the water injection mechanism comprises a first communicating vessel, a second communicating vessel, a first oil pipe and a second oil pipe, the first oil pipe is arranged in the middle of the shell, the second oil pipe is arranged in the first oil pipe, a first water injection layer is arranged on the outer wall of the shell, a second water injection layer is arranged at the top end of the first water injection layer, the second communicating vessel is arranged at the bottom end of the first oil pipe, the first water injection layer and the second communicating vessel are arranged correspondingly, a first communicating vessel is arranged at the top end of the second communicating vessel, and the first communicating vessel and the second water injection layer are arranged correspondingly;
the separating mechanism comprises a first water injection packer, a second water injection packer, a separating ring and a sealing insertion pipe, wherein the top end of the first communicating vessel is provided with the first water injection packer, the bottom end of the first communicating vessel is fixedly connected with the second water injection packer, the bottom end of the second oil pipe is fixedly connected with the sealing insertion pipe, a plurality of through holes are formed in the surface of the sealing insertion pipe, a water inlet is formed in the bottom end of the sealing insertion pipe, the side face of the sealing insertion pipe is fixedly connected with the separating ring, and the outer side of the separating ring is fixedly connected with the second communicating vessel.
Preferably, the bottom end of the shell is fixedly connected with an artificial well bottom.
Preferably, the top end of the second oil pipe is provided with a telescopic pipe, and the outer wall of the telescopic pipe is coated with an anticorrosive material.
Preferably, the top end of the first water injection packer is provided with a safety joint, and the safety joint is fixedly connected with the outer wall of the second oil pipe.
Preferably, the bottom end of the second water injection packer is fixedly connected with a bottom limiter, and the bottom end of the bottom limiter is fixedly connected with a plug.
Preferably, the middle part of the second communicating vessel is provided with a plurality of water inlet holes, and the middle part of the first communicating vessel is also provided with a plurality of water inlet holes.
Preferably, a water injection groove is formed among the second communicating vessel, the bottom limiter and the packing ring.
The utility model has the following beneficial effects:
according to the utility model, through the arrangement of the water injection mechanism and the separation mechanism, as the second oil pipe is arranged in the first oil pipe, the first water injection layer is arranged corresponding to the second communicating vessel, and the first communicating vessel is arranged corresponding to the second water injection layer, water injection is separately carried out, and impact on a pipe column caused by mixing water flows together can be avoided; and because the top end of the first communicating device is provided with a first water injection packer, the bottom end of the first communicating device is fixedly connected with a second water injection packer, and the two water injection packers form a groove, so that the water flow entering the second water injection layer enters the first oil pipe through the first communicating vessel, the bottom end of the second oil pipe is fixedly connected with a sealing insertion pipe, the surface of the sealing insertion pipe is provided with a plurality of through holes, a water inlet is arranged at the bottom end of the sealed inserting pipe, a sealing ring is fixedly connected with the side surface of the sealed inserting pipe, and the outer side of the packing ring is fixedly connected with the second communicating vessel, so that the water flow entering from the first water injection layer enters into the second oil pipe through the sealing insertion pipe, in the process, the second communicating vessel, the bottom limiter and the packing ring help to block water flow, so that the water flow smoothly enters the second oil pipe, the layering effect is effectively optimized, and the working efficiency of the pipe column is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an overall sectional view of a concentric double-pipe separate zone water injection string according to the present invention;
FIG. 2 is a schematic perspective view of a concentric double-pipe separate layer water injection string according to the present invention;
FIG. 3 is a schematic perspective view of a second communicating vessel in a concentric dual-tubular stratified injection string according to the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 1 of a concentric dual-pipe stratified injection water pipe column according to the present invention;
FIG. 5 is a schematic perspective view of a sealing insert tube in a concentric dual-tube separated layer water injection string according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below: 1. a housing; 2. a first water injection packer; 3. a first connector; 4. a second water injection packer; 5. a second communicating vessel; 6. a bottom retainer; 7. plugging with a thread; 8. a first water injection layer; 9. a second water injection layer; 10. a safety joint; 11. a first oil pipe; 12. a second oil pipe; 13. a telescopic pipe; 14. a water inlet hole; 15. a packing ring; 16. sealing the cannula; 17. a through hole; 18. a water inlet.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-5, the concentric double-pipe separate layer water injection pipe column comprises a shell 1, a water injection mechanism and a separation mechanism are arranged inside the shell 1, and the bottom end of the shell 1 is fixedly connected with an artificial well bottom.
The water injection mechanism comprises a first communicating vessel 3, a second communicating vessel 5, a first oil pipe 11 and a second oil pipe 12, the middle part of the shell 1 is provided with the first oil pipe 11, the inside of the first oil pipe 11 is provided with the second oil pipe 12, the top end of the second oil pipe 12 is provided with a telescopic pipe 13, the outer wall of the telescopic pipe 13 is coated with an anticorrosive material, the service life of the tubular column can be effectively prolonged, the outer wall of the shell 1 is provided with a first water injection layer 8, the top end of the first water injection layer 8 is provided with a second water injection layer 9, the bottom end of the first oil pipe 11 is provided with the second communicating vessel 5, the first water injection layer 8 is arranged corresponding to the second communicating vessel 5, the top end of the second communicating vessel 5 is provided with the first communicating vessel 3, the middle part of the second communicating vessel 5 is provided with a plurality of water inlet holes 14, the middle part of the first communicating vessel 3 is also provided with a plurality of water inlet holes 14, the first communicating vessel 3 is arranged corresponding to the second water injection layer 9, the water is injected separately, so that the impact of the water flow mixed together on the pipe column can be avoided.
The separation mechanism comprises a first water injection packer 2, a second water injection packer 4, a packing ring 15 and a sealing insertion pipe 16, the top end of a first communicating vessel 3 is provided with the first water injection packer 2, the top end of the first water injection packer 2 is provided with a safety joint 10, the safety joint 10 is fixedly connected with the outer wall of a second oil pipe 12, the bottom end of the first communicating vessel 3 is fixedly connected with the second water injection packer 4, the two water injection packers form a groove, so that water entering from a second water injection layer 9 enters the first oil pipe 11 through the first communicating vessel 3, the bottom end of the second water injection packer 4 is fixedly connected with a bottom limiter 6, the bottom end of the bottom limiter 6 is fixedly connected with a plug 7, the bottom end of the second oil pipe 12 is fixedly connected with the sealing insertion pipe 16, the surface of the sealing insertion pipe 16 is provided with a plurality of through holes 17, and the bottom end of the sealing insertion pipe 16 is provided with a water inlet 18, sealed 16 side fixedly connected with of intubate seals spacer ring 15, and seals the outside and the 5 fixed connection of second linker 5 of spacer ring 15, second linker 5, bottom stopper 6 and sealed have formed a water injection groove between the spacer ring 15, can help and block rivers, make rivers get into second oil pipe 12 smoothly, the rivers that first water injection layer 8 got into get into in second oil pipe 12 through sealed intubate 16 like this, thereby effectively optimized the layering effect, improved the work efficiency of tubular column.
When personnel use, fix the water injection tubular column, utilize first water injection layer 8 and second water injection layer 9 to carry out water injection work to the device afterwards, because the top of first linker 3 is provided with first water injection packer 2, the bottom fixedly connected with second water injection packer 4 of first linker 3, two water injection packers have formed a recess, make the rivers that second water injection layer 9 got into get into inside first oil pipe 11 through first linker 3, simultaneously the rivers that first water injection layer 8 got into get into in second oil pipe 12 through sealed intubate 16, at this in-process second linker 5, bottom stopper 6 and packing ring 15 help stop rivers, make rivers get into second oil pipe 12 smoothly, thereby effectively optimized the layering effect, the work efficiency of tubular column has been improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a concentric double-barrelled layering water injection string, includes shell (1), its characterized in that: a water injection mechanism and a separation mechanism are arranged in the shell (1);
the water injection mechanism comprises a first communicating vessel (3), a second communicating vessel (5), a first oil pipe (11) and a second oil pipe (12), the first oil pipe (11) is arranged in the middle of the shell (1), the second oil pipe (12) is arranged in the first oil pipe (11), a first water injection layer (8) is arranged on the outer wall of the shell (1), a second water injection layer (9) is arranged at the top end of the first water injection layer (8), the second communicating vessel (5) is arranged at the bottom end of the first oil pipe (11), the first water injection layer (8) and the second communicating vessel (5) are arranged correspondingly, the first communicating vessel (3) is arranged at the top end of the second communicating vessel (5), and the first communicating vessel (3) and the second water injection layer (9) are arranged correspondingly;
the separation mechanism comprises a first water injection packer (2), a second water injection packer (4), a separation ring (15) and a sealing insertion pipe (16), wherein the top end of the first communicating device (3) is provided with the first water injection packer (2), the bottom end of the first communicating device (3) is fixedly connected with the second water injection packer (4), the bottom end of the second oil pipe (12) is fixedly connected with the sealing insertion pipe (16), a plurality of through holes (17) are formed in the surface of the sealing insertion pipe (16), a water inlet (18) is formed in the bottom end of the sealing insertion pipe (16), the side face of the sealing insertion pipe (16) is fixedly connected with the separation ring (15), and the outer side of the separation ring (15) is fixedly connected with the second communicating device (5).
2. The concentric double-pipe separate zone water injection string according to claim 1, wherein a bottom end of the outer casing (1) is fixedly connected with an artificial well bottom.
3. The concentric double-pipe separate zone water injection string according to claim 2, characterized in that the top end of the second oil pipe (12) is provided with a telescopic pipe (13), and the outer wall of the telescopic pipe (13) is coated with an anticorrosive material.
4. The concentric double-pipe separate zone water injection string according to claim 3, characterized in that the top end of the first water injection packer (2) is provided with a safety joint (10), and the safety joint (10) is fixedly connected with the outer wall of the second oil pipe (12).
5. The concentric double-pipe separate zone water injection string according to claim 4, characterized in that a bottom stopper (6) is fixedly connected to the bottom end of the second water injection packer (4), and a plug (7) is fixedly connected to the bottom end of the bottom stopper (6).
6. The concentric double pipe stratified water injection string according to claim 5, wherein a plurality of water inlet holes (14) are provided in the middle of the second communicator (5), and a plurality of water inlet holes (14) are also provided in the middle of the first communicator (3).
7. The concentric double pipe zonal injection string according to claim 6, wherein a water injection groove is formed between the second communication means (5), the bottom stop (6) and the packing ring (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220476346.9U CN216950332U (en) | 2022-03-07 | 2022-03-07 | Concentric double-pipe separate-layer water injection string |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220476346.9U CN216950332U (en) | 2022-03-07 | 2022-03-07 | Concentric double-pipe separate-layer water injection string |
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| Publication Number | Publication Date |
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| CN216950332U true CN216950332U (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220476346.9U Active CN216950332U (en) | 2022-03-07 | 2022-03-07 | Concentric double-pipe separate-layer water injection string |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116658631A (en) * | 2023-06-06 | 2023-08-29 | 盐城市弘通石油机械有限公司 | Electric control packer |
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2022
- 2022-03-07 CN CN202220476346.9U patent/CN216950332U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116658631A (en) * | 2023-06-06 | 2023-08-29 | 盐城市弘通石油机械有限公司 | Electric control packer |
| CN116658631B (en) * | 2023-06-06 | 2023-10-20 | 盐城市弘通石油机械有限公司 | Electric control packer |
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