CN206495669U - Card pipe string for plugging shallow-layer sleeve leakage water injection well - Google Patents
Card pipe string for plugging shallow-layer sleeve leakage water injection well Download PDFInfo
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- CN206495669U CN206495669U CN201720103782.0U CN201720103782U CN206495669U CN 206495669 U CN206495669 U CN 206495669U CN 201720103782 U CN201720103782 U CN 201720103782U CN 206495669 U CN206495669 U CN 206495669U
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- water injection
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Abstract
The utility model discloses card pipe string for plugging shallow-layer sleeve leakage water injection well, including inner tube, outer tube, upper UNICOM's screen casing, lower UNICOM's screen casing, the inner tube is arranged on inside outer tube and forms annular space between the two, and upper UNICOM's screen casing, lower UNICOM's screen casing are connected to the upper/lower terminal of outer tube.Upper packer is also associated between the outer tube upper end and upper UNICOM's screen casing, lower packet is also associated between the outer tube lower end and lower UNICOM screen casing.The inner tube upper end and upper UNICOM's screen casing upper end are both connected in reducer union, and the inner tube lower end and lower UNICOM's screen casing lower end are both connected to lower reducer union.The upper reducer union upper end connection top water injection pipe, the lower reducer union lower end connection bottom water injection pipe.The utility model makes injection water not be back to ground at casing leakage point, meets the demand of oil reservoir seperated layer water injection, while can also normal well-flushing.
Description
Technical field
The utility model is related to water injection well in oil fields tubing string, specifically card pipe string for plugging shallow-layer sleeve leakage water injection well.
Background technology
Water injection well is after waterflooding extraction for many years, and many sleeve pipes all occur in that the problems such as breakage, deformation.When casing leakage point
When the well cement returns more than height, referred to as shallow-layer sleeve leakage.When shallow-layer sleeve leakage occurs in water injection well, injection water will be from
Toric space of the leakage points through production string and outer layer sleeve is returned onto ground, and causing ground to return water causes the water injection well to stop
Note.The governing measure of current shallow-layer sleeve leakage water injection well mainly has following several method：One is to change the set on leakage points
Pipe；Two be to being blocked at leakage using cement；Three be with blocking pipe to being subsidized at casing leakage；Four be using packing
Device is blocked.Change the sleeve pipe on leakage points there is operating cost height, engineering time length, administer that well section depth is limited etc. to limit to；
There is the closure low limitation of pressure-bearing to carrying out closure at leakage using cement, there is difficulty of construction greatly, low success rate of problem；Adopt
It is to need to alter layer and well cementation (blocking well section) using grout off to carrying out subsidy one at casing leakage with pipe is blocked, therefore together
There is the problem of second method is present in sample, two be to cause pit shaft " seizing by the throat " and " pregnant " phenomenon, to subsequent technique technology
Application cause great technology restriction, such as to well need to be layered, the problem of there is inadaptable conventional batch technology and the short term of validity；
Losing section using packer packing leak stopping can cause the annular space between tubing and casing to be closed, it is impossible to set up anti-flushing well circulation canal,
After the pit shaft of water injection well and stratum are blocked can not well-flushing in time, influence oil field efficient water injection develops.
Utility model content
The purpose of this utility model is offer card pipe string for plugging shallow-layer sleeve leakage water injection well, makes injection water not from sleeve pipe
Ground is back at leakage points, the demand of oil reservoir seperated layer water injection is met, while can also normal well-flushing.
In order to reach above-mentioned purpose, the utility model employs following technical scheme, card shallow-layer sleeve leakage water injection well envelope
Plugging post, including inner tube, outer tube, upper UNICOM's screen casing, lower UNICOM's screen casing, the inner tube are arranged on outer tube inside and two
Annular space is formed between person, upper UNICOM's screen casing, lower UNICOM's screen casing are connected to the upper/lower terminal of outer tube.
Upper packer, the outer tube lower end and lower UNICOM are also associated between the outer tube upper end and upper UNICOM's screen casing
Lower packet is also associated between screen casing.
The inner tube upper end and upper UNICOM's screen casing upper end are both connected in reducer union, the inner tube lower end with
And lower UNICOM's screen casing lower end is both connected to lower reducer union.
The upper reducer union upper end connection top water injection pipe, the lower reducer union lower end connection bottom water injection pipe.
Oil jacket annular space between the top water injection pipe and wellbore casing passes through the upper linked hole that is opened up on upper UNICOM's screen casing
Annular space between inside and outside layer pipe is connected, and the annular space between the inside and outside layer pipe passes through the lower UNICOM that is opened up on lower UNICOM's screen casing
Oil jacket annular space between hole and bottom water injection pipe and wellbore casing is connected.
Compared to prior art, the utility model has the advantages that：
Upper packer be in sleeve pipe run-down mouth on, lower packet be in sleeve pipe run-down mouth under, upper packer, under
After packer setting, wellbore casing is separated into by top water injection pipe, upper packer, outer tube, lower packet, bottom water injection pipe
Annular space, middle annular space, lower annular space, upper annular space, annular space well-flushing passage, lower annular space are sieved in the upper linked hole of upper UNICOM's screen casing and lower UNICOM
It is connected under the lower linked hole effect of pipe, middle annular space is not communicated with upper annular space, annular space well-flushing passage, lower annular space, makes run-down mouth quilt
Closing, upper annular space, annular space well-flushing passage, the water under high pressure of lower annular space can not leak into stratum by run-down mouth, and water injection well can be normal
Water filling, upper annular space, annular space well-flushing passage, lower annular space formation well-flushing passage, the water injection well of sleeve pipe shallow-layer leakage can also be washed normally
Well, therefore, the utility model can reach utility model purpose, and well-flushing is unable to when overcoming current sleeve pipe shallow-layer absorption well water filling
Problem, the normal water filling that the well water filling that sleeve pipe shallow-layer is missed can be permanently effective, can improve the effect of water flooding, have
Significant economic benefit.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model card pipe string for plugging shallow-layer sleeve leakage water injection well.
In figure：Top water injection pipe 1, wellbore casing 3, upper reducer union 4, upper UNICOM's screen casing 5, upper packer 7, inner tube
11st, outer tube 12, lower packet 13, lower UNICOM's screen casing 15, lower reducer union 16, bottom water injection pipe 17.
Embodiment
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing is only reference
With purposes of discussion, not for being any limitation as to the utility model.
As shown in figure 1, card pipe string for plugging shallow-layer sleeve leakage water injection well, including top water injection pipe 1, wellbore casing 3, upper change
Drive connector 4, upper UNICOM's screen casing 5, upper packer 7, inner tube 11, outer tube 12, lower packet 13, lower UNICOM's screen casing 15, lower change
There are run-down mouth 9, the lower outer portion and the first line of a couplet of upper reducer union 4 in drive connector 16, bottom water injection pipe 17, the shallow-layer position of wellbore casing 3
The top connection of logical screen casing 5, the bottom of upper UNICOM's screen casing 5 be connected with the top of upper packer 7, the bottom of upper packer 7 and outside
The top connection of layer pipe 12, the bottom of outer tube 12 is connected with the top of lower packet 13, the bottom of lower packet 13 and the second line of a couplet
The top connection of logical screen casing 15, the bottom of lower UNICOM screen casing 15 and the upper external connection of lower reducer union 16, lower reducer union 16
Bottom be connected with the top of bottom water injection pipe 17, the top of inner tube 11 and upper reducer union 4 it is lower it is internal be connected, internal layer
The bottom of pipe 11 is connected with the upper inside of lower reducer union 16, is had on upper UNICOM's screen casing 5 on upper linked hole 6, lower UNICOM screen casing 15
There is lower linked hole 14, annular space well-flushing passage 10, top water injection pipe 1, upper reducer union are formed between inner tube 11, outer tube 12
4th, upper UNICOM's screen casing 5, upper packer 7, inner tube 11, outer tube 12, lower packet 13, lower UNICOM's screen casing 15, lower reducer union
16th, with the water injection string tripping in wellbore casing 3 of bottom after bottom water injection pipe 17 links into an integrated entity, upper packer 7 is in described
Run-down mouth 9 on, lower packet 13 be in described run-down mouth 9 under, set upper packer 7, lower packet 13, upper envelope
Tightly it is affixed every the inwall of device 7, the packing element of lower packet 13 and wellbore casing 3 and keeps sealing, makes wellbore casing 3 by top
Water injection pipe 1, upper packer 7, outer tube 12, lower packet 13, bottom water injection pipe 17 are separated into annular space 2, middle annular space 8, lower ring
Sky 18, described upper annular space 2, annular space well-flushing passage 10, lower annular space 18 are sieved in the upper linked hole 6 of upper UNICOM's screen casing 5 and lower UNICOM
The lower linked hole 14 of pipe 15 is connected under acting on, described middle annular space 8 and described upper annular space 2, annular space well-flushing passage 10, lower ring
Sky 18 is not communicated with, and is closed described run-down mouth 9, described upper annular space 2, annular space well-flushing passage 10, the high pressure of lower annular space 18
Water can not leak into stratum by described run-down mouth 9, and the bottom of bottom water injection pipe 17 connects other water injection tools, such as dispensing water filling
Injection well downhole flow regulator, packer, bottom sieve are stifled, sand retention pipe etc..
Upper packer 7, lower packet 13 are Y342 packers, facilitate letter to set and unseal, and can coordinate other layering notes
Water conservancy project tool carries out seperated layer water injection.
The internal diameter of inner tube 11 is more than Φ 48, can be with decker of the tester of the existing minimum diameter of tripping in bottom
Tested, the difference of the external diameter of inner tube 11 and the internal diameter of outer tube 12 is more than 6mm, it is ensured that there are enough circulation areas, reduces
The throttling of well-flushing water, it is ensured that the well-flushing water for having enough flows passes through, improves well-flushing quality.
The direction of arrow is the direction that well-flushing water flows in Fig. 1.
During water filling, injection water is injected into the layering tool of bottom from top water injection pipe 1, inner tube 11, bottom water injection pipe 17
In be assigned to each water filling layer.During well-flushing, well-flushing water is squeezed into out of wellbore casing 3, through described upper annular space 2, annular space well-flushing
Passage 10, lower annular space 18 flow downwardly into the bottom of water injection string, are returned upwards out of bottom, and the inside through top water injection pipe 1 is returned out
Realize well-flushing in ground.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the scope of the claims of the present utility model, its
He uses the equivalence changes of the utility model patent spirit, all should all belong to the scope of the claims of the present utility model.
Claims (5)
1. card pipe string for plugging shallow-layer sleeve leakage water injection well, it is characterised in that including inner tube, outer tube, upper UNICOM's screen casing, under
UNICOM's screen casing, the inner tube is arranged on inside outer tube and forms annular space between the two, upper UNICOM's screen casing, lower UNICOM sieve
Pipe is connected to the upper/lower terminal of outer tube.
2. card pipe string for plugging shallow-layer sleeve leakage water injection well according to claim 1, it is characterised in that in the outer tube
Upper packer is also associated between end and upper UNICOM's screen casing, lower envelope is also associated between the outer tube lower end and lower UNICOM screen casing
Every device.
3. card pipe string for plugging shallow-layer sleeve leakage water injection well according to claim 1 or 2, it is characterised in that the internal layer
Pipe upper end and upper UNICOM's screen casing upper end are both connected in reducer union, the inner tube lower end and lower UNICOM's screen casing lower end
It is both connected to lower reducer union.
4. card pipe string for plugging shallow-layer sleeve leakage water injection well according to claim 3, it is characterised in that the upper reducing connects
Head upper end connection top water injection pipe, the lower reducer union lower end connection bottom water injection pipe.
5. card pipe string for plugging shallow-layer sleeve leakage water injection well according to claim 4, it is characterised in that the top water filling
Manage and pass through the annular space between the upper linked hole and inside and outside layer pipe that are opened up on upper UNICOM's screen casing the oil jacket annular space between wellbore casing
Connection, annular space between the inside and outside layer pipe passes through the lower linked hole and bottom water injection pipe and pit shaft that are opened up on lower UNICOM's screen casing
Oil jacket annular space connection between sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103782.0U CN206495669U (en) | 2017-01-22 | 2017-01-22 | Card pipe string for plugging shallow-layer sleeve leakage water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103782.0U CN206495669U (en) | 2017-01-22 | 2017-01-22 | Card pipe string for plugging shallow-layer sleeve leakage water injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206495669U true CN206495669U (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720103782.0U Active CN206495669U (en) | 2017-01-22 | 2017-01-22 | Card pipe string for plugging shallow-layer sleeve leakage water injection well |
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| CN (1) | CN206495669U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119747A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Drilling string and drilling completion integrated method |
| CN112065341A (en) * | 2020-09-15 | 2020-12-11 | 北京尊宏科技发展有限公司 | Single-well physical blockage removal and intelligent remote control measurement and fine adjustment layered water injection process for water injection well |
| CN112983337A (en) * | 2019-12-02 | 2021-06-18 | 中国石油天然气股份有限公司 | Packer for plugging and plugging method |
| CN114526030A (en) * | 2021-12-30 | 2022-05-24 | 王占强 | Sleeve-type combined sealer |
-
2017
- 2017-01-22 CN CN201720103782.0U patent/CN206495669U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119747A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Drilling string and drilling completion integrated method |
| CN111119747B (en) * | 2018-11-01 | 2021-08-13 | 中国石油化工股份有限公司 | Drilling string and drilling completion integrated method |
| CN112983337A (en) * | 2019-12-02 | 2021-06-18 | 中国石油天然气股份有限公司 | Packer for plugging and plugging method |
| CN112065341A (en) * | 2020-09-15 | 2020-12-11 | 北京尊宏科技发展有限公司 | Single-well physical blockage removal and intelligent remote control measurement and fine adjustment layered water injection process for water injection well |
| CN114526030A (en) * | 2021-12-30 | 2022-05-24 | 王占强 | Sleeve-type combined sealer |
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