CN211851799U - Single-flow water distribution nozzle - Google Patents
Single-flow water distribution nozzle Download PDFInfo
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- CN211851799U CN211851799U CN202020157164.6U CN202020157164U CN211851799U CN 211851799 U CN211851799 U CN 211851799U CN 202020157164 U CN202020157164 U CN 202020157164U CN 211851799 U CN211851799 U CN 211851799U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 153
- 238000007789 sealing Methods 0.000 claims abstract description 85
- 238000002347 injection Methods 0.000 abstract description 37
- 239000007924 injection Substances 0.000 abstract description 37
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a water injection well choke is joined in marriage to single current formula belongs to the layering water injection technique. This water distribution mouth includes: the upper body, the lower body with the upper end connected with the lower end of the upper body, the check valve arranged in the upper body and the first sealing ring arranged on the outer wall of the upper body and/or the lower body. A water outlet hole is formed in the wall of the lower body; the inner cavity of the upper body comprises a small-diameter section and a large-diameter section which are sequentially communicated from top to bottom, and a water inlet hole is formed in the wall of the small-diameter section; the check valve includes: the hook, the hanging ring, the sealing baffle and the second sealing ring; the hook is connected with the inner wall of the large-diameter section; the hanging ring is hung on the hook; the side wall of the sealing baffle is connected with the hanging ring and used for plugging the small-diameter section; the second sealing ring is arranged on the sealing baffle and used for sealing a gap between the sealing baffle and the small-diameter section. The water distribution nozzle can seal the high-pressure water return channel when stopping injection, and high-pressure water is prevented from returning out of the stratum through the water distribution nozzle.
Description
Technical Field
The utility model relates to a layering water injection technique, in particular to water injection well choke is joined in marriage to single current formula.
Background
In the separate-layer water injection well, separate-layer water distribution pipe columns are matched with water distribution nozzles with different diameters to carry out separate-layer quantitative water injection. Therefore, it is necessary to provide a water dispensing nozzle.
The prior art provides water dispensing nozzles comprising: the water distribution nozzle comprises a water distribution nozzle body matched with the mounting hole on the layered water distribution pipe column, and a water inlet hole and a water outlet hole which are respectively arranged on the upper wall and the lower wall of the water distribution nozzle body.
In the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art:
in the water injection process, when the injection is stopped suddenly due to equipment or process reasons, water in a high-pressure layer section returns out of the stratum through the water distribution nozzle and is injected into a low-pressure layer, a large amount of sand grains return out of the stratum, the supporting structure of an oil layer is damaged, and the casing is deformed or even broken.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a water injection well choke is joined in marriage to single current formula can solve above-mentioned technical problem.
Specifically, the method comprises the following technical scheme:
a single flow water distribution nozzle, comprising: the sealing device comprises an upper body, a lower body, a check valve and a first sealing ring, wherein the upper end of the lower body is connected with the lower end of the upper body;
a water outlet hole is formed in the wall of the lower body;
the inner cavity of the upper body comprises a small-diameter section and a large-diameter section which are sequentially communicated from top to bottom, and a water inlet hole is formed in the wall of the small-diameter section;
the check valve includes: the hook, the hanging ring, the sealing baffle and the second sealing ring;
wherein the hook is connected with the inner wall of the large-diameter section;
the hanging ring is hung on the hook;
the side wall of the sealing baffle is connected with the hanging ring and used for plugging the small-diameter section;
the second sealing ring is arranged on the sealing baffle plate and used for sealing a gap between the sealing baffle plate and the small-diameter section.
In one possible implementation, the sealing flap comprises: the baffle comprises a circular baffle body and an annular step arranged above the circular baffle body;
the circular baffle body is used for being in contact with a sealing step formed by the small-diameter section and the large-diameter section;
the annular step is used for entering the small-diameter section.
In a possible implementation manner, the second sealing ring is disposed on the annular step, and a sealing groove adapted to the second sealing ring is disposed on an inner wall of the small diameter section.
In a possible implementation manner, the hook is in a circular arc structure, and two ends of the hook are respectively connected with the inner wall of the large-diameter section.
In one possible implementation, the water inlet hole includes: a plurality of strip-shaped holes arranged at intervals along the circumferential direction; and
a plurality of circular holes arranged at intervals in the circumferential direction;
and the strip-shaped holes are positioned above the circular holes.
In one possible implementation, the plurality of circular holes are distributed in a plurality of turns in an axial direction of the small diameter section.
In a possible implementation, three of the water outlet holes are evenly distributed on the wall of the lower body along the circumferential direction.
In one possible implementation mode, the length of the strip-shaped holes is 3mm-6mm, and the width of the strip-shaped holes is 12mm-18 mm;
the diameter of the circular hole is 2mm-4 mm.
In a possible implementation, the diameter of the water outlet hole is 0.6mm-3 mm.
In one possible implementation, the upper body and the lower body are threadedly connected.
The embodiment of the utility model provides a technical scheme's beneficial effect includes at least:
the embodiment of the utility model provides a water injection well choke is joined in marriage to single current formula, during the use, utilize to throw and drag for the instrument with this water injection well choke is joined in marriage to eccentric water distribution tubular column's eccentric water injection mandrel, go up the body at last, the body is under down. The gap between the water distribution nozzle and the eccentric water distributor is sealed by the first sealing ring to plug an internal channel of the eccentric water distributor and isolate water in the eccentric water distribution pipe column from a water injection layer.
When normal water injection, high-pressure water in the eccentric water distribution pipe column enters the upper body of the single-flow water distribution nozzle from the water inlet hole, the sealing baffle of the single-flow valve is pushed open, enters the lower body of the single-flow water distribution nozzle and enters the corresponding water injection layer from the water outlet hole, and water distribution is realized. When stopping annotating, the apopore that the internal high pressure water of water injection layer passes through this single current formula water distribution nozzle returns to down originally internally, under the effect of gravity and return water pressure, sealing baffle will block up the path section, and then seal and live the high pressure water and return the passageway, prevent that the high pressure water from returning and spit, has avoided the high pressure water to return from the stratum through water distribution nozzle.
Make this check valve be fixed in the single current formula water distribution nozzle through the couple in, hang on the couple through making the link to make sealing baffle can rotate for the couple, thereby make sealing baffle can be pushed open so that path section and path section intercommunication by intaking, and can be compressed tightly so that path section and path section keep apart by the return water. The gap between the sealing baffle and the small-diameter section is sealed by using the second sealing ring, so that the sealing performance of the high-pressure water return channel is further ensured, and the high-pressure water is prevented from returning and spitting.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described 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 to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a single-flow water distribution nozzle provided in an embodiment of the present invention in a normal water injection state;
fig. 2 is a schematic structural view of a single-flow water distribution nozzle provided in the embodiment of the present invention in a stop state;
fig. 3 is a schematic structural diagram of a check valve provided in an embodiment of the present invention.
The reference numerals denote:
1-an upper body, 2-a lower body,
3-check valve, 301-hook, 302-hanging ring, 303-sealing baffle, 304-second sealing ring,
4-a first sealing ring, 5-a water outlet hole,
6-water inlet, 601-strip hole, 602-circular hole.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following will describe the embodiments of the present invention in further detail with reference to the accompanying drawings.
The embodiment of the utility model provides a water injection well choke is joined in marriage to single current formula, as shown in figure 1 and figure 2, this water injection well choke is joined in marriage to single current formula includes: go up body 1, the lower body 2 that the upper end is connected with the lower extreme of last body 1, set up the single current valve 3 in last body 1 inside, set up first sealing washer 4 on the outer wall of last body 1 and/or lower body 2. Wherein, the wall of the lower body 2 is provided with a water outlet 5; the inner cavity of the upper body 1 comprises a small-diameter section and a large-diameter section which are sequentially communicated from top to bottom, and a water inlet hole 6 is formed in the wall of the small-diameter section. As shown in fig. 3, the check valve 3 includes: a hook 301, a hanging ring 302, a sealing baffle 303 and a second sealing ring 304; wherein, the hook 301 is connected with the inner wall of the large-diameter section; the hanging ring 302 is hung on the hook 301; the side wall of the sealing baffle 303 is connected with the hanging ring 302 and used for plugging the small-diameter section; the second seal ring 304 is provided on the seal flap 303, and is used for sealing a gap between the seal flap 303 and the small-diameter section.
The embodiment of the utility model provides a single current formula water distribution nozzle uses with eccentric water distribution tubular column is supporting, during the application, utilizes to throw and drag for the instrument with this single current formula water distribution nozzle put in to the eccentric water distributor of eccentric water distribution tubular column, goes up body 1 at last, and body 2 is under down. The gap between the water distribution nozzle and the eccentric water distributor is sealed by the first sealing ring 4 to plug an internal channel of the eccentric water distributor and isolate water in the eccentric water distribution pipe column from a water injection layer.
As shown in the attached drawing 1, during normal water injection, high-pressure water in the eccentric water distribution pipe column enters the upper body 1 of the single-flow water distribution nozzle from the water inlet 6, pushes open the sealing baffle 303 of the single-flow valve 3, enters the lower body 2 of the single-flow water distribution nozzle and enters the corresponding water injection layer from the water outlet 5, and thus the water distribution is realized.
As shown in the attached drawing 2, when the water injection is stopped, the high-pressure water in the water injection layer flows back to the lower body 2 through the water outlet hole 5 of the single-flow water distribution nozzle, the small-diameter section is blocked by the sealing baffle 303 under the action of gravity and the pressure of the back water, and then the high-pressure water return channel is sealed, so that the high-pressure water is prevented from returning and spitting, and the high-pressure water is prevented from returning from the stratum through the water distribution nozzle.
The check valve 3 is fixed in the single-flow water distribution nozzle through the hook 301, the hanging ring 302 is hung on the hook 301, so that the sealing baffle 303 can rotate relative to the hook 301, the sealing baffle 303 can be pushed open by inlet water to enable the small-diameter section and the large-diameter section to be communicated, and the sealing baffle 303 can be pressed by return water to isolate the small-diameter section and the large-diameter section.
By using the second seal ring 304, the gap between the seal baffle 303 and the small diameter section is sealed, so as to further ensure the sealing performance of the high pressure water return passage and prevent the high pressure water from returning.
In the embodiment of the present invention, as an example, as shown in fig. 3, the sealing baffle 303 includes: the baffle plate comprises a circular baffle plate body and an annular step arranged above the circular baffle plate body. Wherein, circular baffle body is used for the sealed step contact with the formation of path section and path section, and annular step is used for getting into the path section.
It can be understood that the internal diameter of the small diameter section is smaller than that of the large diameter section, so that a step can be formed at the joint between the small diameter section and the large diameter section, and the embodiment of the utility model provides a sealing step.
Based on the above structure of the sealing baffle 303, when the sealing baffle 303 seals the small diameter section under the pressure of the backwater, the circular baffle body contacts with the sealing step, so as to realize the blocking of the small diameter section (it can be understood that, when the injection is stopped, the circular baffle body of the sealing baffle 303 is seated on the sealing step). And the annular step on the sealing baffle 303 enters the small-diameter section to improve the plugging effect.
The second sealing ring 304 can be arranged on the annular step, the inner wall of the small-diameter section is provided with a sealing groove matched with the second sealing ring 304, and the annular step is arranged in the small-diameter section, so that the second sealing ring 304 on the annular step can enter the sealing groove on the inner wall of the small-diameter section when entering the small-diameter section, the sealing effect of the high-pressure water return channel can be remarkably improved, and the high-pressure water layer return water discharge phenomenon is ensured not to occur.
In the embodiment of the present invention, the first sealing ring 4 and the second sealing ring 304 are made of high pressure-resistant sealing rubber rings, and in a possible example, the plurality of first sealing rings 4 can be disposed on the outer wall of the lower body 2. For the second sealing ring 304, one half of the second sealing ring can be embedded in the sealing groove on the annular step, and the other half of the second sealing ring can be matched with the sealing groove on the inner wall of the small-diameter section, so that the second sealing ring 304 can be prevented from displacing due to water pressure, and the sealing effect is further improved.
In order to make seal baffle 303 can rotate for couple 301 easily, avoid deviating from wherein simultaneously, the embodiment of the utility model provides an in, couple 301 is convex structure, utilizes its smooth structure to reach and does benefit to the pivoted purpose, and couple 301's both ends respectively with the interior wall connection of major diameter section, can effectively avoid link 302 to deviate from wherein.
The hook 301 is connected to the inner wall of the large-diameter section, specifically, the hook 301 is connected to the inner wall of the joint of the large-diameter section and the sealing step. The hook 301 may be provided with an anti-falling structure to further prevent the hanging ring 302 from falling out.
The embodiment of the utility model provides an in, link 302 and seal baffle 303 can adopt same billet integrated into one piece preparation to obtain, so in order to improve its intensity.
The embodiment of the utility model provides an among the single current formula water distribution nozzle, as shown in figure 1, inlet opening 6 includes: a plurality of bar-shaped holes 601 arranged at intervals in the circumferential direction; and a plurality of circular holes 602 provided at intervals in the circumferential direction; and bar hole 601 is located the top of circular port 602, so set up the structure of above-mentioned inlet opening 6, not only can prevent that the impurity of pouring into water from leading to the fact apopore 5 to block up in the water injection well choke is joined in marriage to the single current formula, can also guarantee that the injected water is steady, prevents to cause the damage to the seal baffle 303 of single current valve 3.
Further, in order to optimize the above effect, the plurality of circular holes 602 may be distributed in a plurality of turns, for example, 3 turns, 4 turns, or the like, in the axial direction of the small diameter section.
The plurality of strip-shaped holes 601 may be distributed in a circle, and the distribution heights may be partially the same, and the other portions are different, i.e., have different heights, so as to achieve the purpose of optimizing the above effects. For example, the number of the stripe holes 601 may be set to 6, and the number of the circular holes 602 may be set to 20.
To apopore 5, in order to obtain good water distribution effect, can make three apopore 5 along circumferential direction evenly distributed on the wall of body 2 down, that is to say, the contained angle between two adjacent apopores 5 becomes 120, so sets up, can not only make to allocate annotates effectually, and does benefit to the control to the play water.
According to the injection allocation amount of the layer section, the diameters of the water inlet holes 6 and the water outlet holes 5 are determined to meet the injection allocation requirement, for example, the diameter of the water inlet holes 6 and the water outlet holes 5 can meet the daily injection of 10m3-160m3The water injection requirement of (1). To achieve the above object, in the practice of the present invention, the strip-shaped holes 601 have a length of 3mm to 6mm (e.g., 5mm) and a width of 12mm to 18mm (e.g., 15 mm); the diameter of the circular hole 602 is 2mm to 4mm (e.g., 3 mm); the diameter of the water outlet hole 5 is 0.6mm-3mm (e.g. 0.8mm, 1mm, 2mm, 3mm, etc.).
In order to facilitate the assembly of this single current formula water injection well choke, the embodiment of the utility model provides an in, go up body 1 and 2 threaded connection of lower body to satisfy under both the prerequisite of connecting the fastening nature, realize dismantling the connection.
For example, in the use process, when water does not enter the injection pipe or water return phenomenon of a high-pressure stratum occurs after the injection is stopped, the uniflow water distribution nozzle can be taken out by using a throwing and fishing tool, the upper body 1 and the lower body 2 are disassembled, impurities deposited in the inner cavities of the upper body and the lower body are removed, and the uniflow water distribution nozzle can be maintained.
It should be noted that, in the embodiment of the present invention, the top of the upper body 1 can be designed to have a spherical height, and the outer diameter of the upper portion is smaller than the outer diameter of the lower portion thereof, so as to use the fishing tool to perform the fishing. And, the upper end of the upper body 1 is closed, and the lower end of the lower body 2 is closed, so as to ensure that water distribution is smoothly carried out.
To sum up, utilize the embodiment of the utility model provides a water injection well choke is joined in marriage to single current formula based on the use of single current valve 3, has effectively solved the water injection system and has stopped annotating the back, and the water in the high-pressure interval causes the oil reservoir to go out sand through joining in marriage during water injection well choke backflows the pit shaft, the difficult problem that the wall of a well collapses. Use on the spot the embodiment of the utility model provides a behind the single current formula water distribution nozzle, the workover cycle of sand formation well has prolonged 3 times before comparing.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a single current formula water distribution mouth which characterized in that, single current formula water distribution mouth includes: the sealing device comprises an upper body, a lower body, a check valve and a first sealing ring, wherein the upper end of the lower body is connected with the lower end of the upper body;
a water outlet hole is formed in the wall of the lower body;
the inner cavity of the upper body comprises a small-diameter section and a large-diameter section which are sequentially communicated from top to bottom, and a water inlet hole is formed in the wall of the small-diameter section;
the check valve includes: the hook, the hanging ring, the sealing baffle and the second sealing ring;
wherein the hook is connected with the inner wall of the large-diameter section;
the hanging ring is hung on the hook;
the side wall of the sealing baffle is connected with the hanging ring and used for plugging the small-diameter section;
the second sealing ring is arranged on the sealing baffle plate and used for sealing a gap between the sealing baffle plate and the small-diameter section.
2. A single flow water distribution nozzle as set forth in claim 1 wherein said sealing baffle comprises: the baffle comprises a circular baffle body and an annular step arranged above the circular baffle body;
the circular baffle body is used for being in contact with a sealing step formed by the small-diameter section and the large-diameter section;
the annular step is used for entering the small-diameter section.
3. The single flow water distribution nozzle as claimed in claim 2, wherein the second sealing ring is disposed on the annular step, and a sealing groove adapted to the second sealing ring is disposed on an inner wall of the small diameter section.
4. The single flow water distribution nozzle as claimed in claim 1, wherein the hook is in a circular arc shape, and two ends of the hook are respectively connected with the inner wall of the large diameter section.
5. The single flow water distribution nozzle as set forth in claim 1, wherein the water inlet hole comprises: a plurality of strip-shaped holes arranged at intervals along the circumferential direction; and the number of the first and second groups,
a plurality of circular holes arranged at intervals in the circumferential direction;
and the strip-shaped holes are positioned above the circular holes.
6. A single flow water distribution nozzle as set forth in claim 5 wherein said plurality of circular holes are distributed in a plurality of turns in the axial direction of said small diameter section.
7. A single flow water distribution nozzle as claimed in claim 5, wherein the three water outlet holes are evenly distributed on the wall of the lower body along the circumferential direction.
8. The single flow water distribution nozzle as claimed in claim 7, wherein the strip-shaped hole has a length of 3mm-6mm and a width of 12mm-18 mm;
the diameter of the circular hole is 2mm-4 mm.
9. The single flow water distribution nozzle as claimed in claim 8, wherein the diameter of the water outlet hole is 0.6mm-3 mm.
10. A single flow water distribution nozzle as claimed in any one of claims 1 to 9, wherein the upper body and the lower body are threadedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020157164.6U CN211851799U (en) | 2020-02-07 | 2020-02-07 | Single-flow water distribution nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020157164.6U CN211851799U (en) | 2020-02-07 | 2020-02-07 | Single-flow water distribution nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211851799U true CN211851799U (en) | 2020-11-03 |
Family
ID=73233040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020157164.6U Active CN211851799U (en) | 2020-02-07 | 2020-02-07 | Single-flow water distribution nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211851799U (en) |
-
2020
- 2020-02-07 CN CN202020157164.6U patent/CN211851799U/en active Active
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