CN218439308U - Anti-backflow packer for polymer injection well - Google Patents
Anti-backflow packer for polymer injection well Download PDFInfo
- Publication number
- CN218439308U CN218439308U CN202222926503.4U CN202222926503U CN218439308U CN 218439308 U CN218439308 U CN 218439308U CN 202222926503 U CN202222926503 U CN 202222926503U CN 218439308 U CN218439308 U CN 218439308U
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- Prior art keywords
- backflow
- blanking plug
- main part
- main body
- plug main
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- 229920000642 polymer Polymers 0.000 title claims abstract description 19
- 238000002347 injection Methods 0.000 title claims description 30
- 239000007924 injection Substances 0.000 title claims description 30
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000002265 prevention Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 238000005406 washing Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000010410 layer Substances 0.000 description 3
- 230000000151 anti-reflux effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241001415288 Coccidae Species 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The utility model relates to an oil field test field especially relates to a notes gather well and use anti-backflow blanking plug, including blanking plug main part and anti-backflow main part, the inside below of anti-backflow main part is equipped with anti-backflow stifled ball, and the outside below connection open slot of anti-backflow main part, anti-backflow main part top are equipped with anti-backflow joint, and anti-backflow joint passes through the step-down ring with the blanking plug main part to be connected, blanking plug main part top installation detachable presses the cap, and the head is salvaged to the inside top movable mounting of blanking plug main part, salvage the top of head bottom in the cam top, the cam is installed inside the blanking plug main part, and sealing washer A is inlayed to the blanking plug main part outside, sealing washer B is inlayed to the outside of open slot. The utility model discloses in, through the structure that improves former blanking plug, the high-pressure layer section of avoiding annotating the polymer well takes place to tell the downhole channel that the liquid backward flow caused and blocks up, not only can reach the effect that promotes the expulsion, can also reduce simultaneously and annotate polymer well washing number of times and operation well times, and then guarantee the steady oil and go up to produce.
Description
Technical Field
The utility model relates to an oil field test field especially relates to an annotate that polymer well is with preventing blanking plug that backflows.
Background
However, in the field of the oil field at present, the polymer injection well is often put into operation for a period of time, and the injection pressure is increased due to the injection liquid of the high polymer component, so that the interlayer pressure is too high, and under the induction of various factors, such as long-time well shut-in, main water injection line perforation, injection pump damage, production gate replacement and the like, formation liquid is reversely discharged to block a water injection channel, so that the problems of different degrees are caused: first, slight silting can cause the bailer to drag for the blanking plug; secondly, slightly more sediment forms a soft scale bridge to cause the test instrument to sink; thirdly, under the condition of very much sludge, the blockage of part of underground pipe columns can be solved only by well washing and operation.
The situation is that the original polymer injection well blanking plug is unreasonable in arrangement, the original guide head structure adopts a ridge groove open type design, and a water injection channel between the blanking plug and a water distributor is always open and cannot be closed in time, so that formation liquid is promoted to enter a downhole pipe column, and even deposition in different degrees is formed.
Disclosure of Invention
The utility model aims at providing a pair of annotate and gather well and use plug that prevents backflowing, because injection pressure is too high among the prior art for solving, lead to annotating the palirrhea water injection passageway that blocks up of high-pressure layer section in gathering the well, cause the plug to drag for, the testing instrument under not reach the operation scheduling problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme: notes gather well and use and prevent flowing back blanking plug, including blanking plug main part and anti-flowing back main part, the inside below of anti-flowing back main part is equipped with anti-flowing back stifled ball, the outside below connection open slot that prevents flowing back main part, it is equipped with anti-flowing back joint to prevent flowing back main part top, it passes through the step-down ring with the blanking plug main part and is connected to prevent flowing back joint, blanking plug main part top installation detachable pressure cap, the head is salvaged to the inside top movable mounting in blanking plug main part, top in the cam bottom of salvaging the head, the cam is installed inside the blanking plug main part, at least 2 sealing washer A are inlayed to the blanking plug main part outside, at least 2 sealing washer B are inlayed to the open slot outside, prevent flowing back joint, prevent flowing back main part, prevent flowing back stifled ball, constitute the seeker jointly.
Preferably, the anti-backflow connector is embedded in the top end of the anti-backflow main body, and the anti-backflow connector is detachably connected with the anti-backflow main body.
Preferably, the top end of the pressure reducing ring is embedded and installed below the blanking plug main body, and the bottom end of the pressure reducing ring is movably connected with the guide head.
Preferably, the fishing head extends through the interior of the plug body and extends to the top end of the pressing cap.
Preferably, a spring is arranged between the outer wall of the fishing head and the inside of the pressing cap.
The utility model provides a pair of notes gather well and use anti-reflux blocking device has following beneficial effect:
the utility model provides an annotate and gather well and use anti-backflow blanking plug, through improving the guide head structure of original notes well blanking plug, prevent flowing back stifled ball, prevent flowing back main part, prevent flowing back and connect mutually supporting down, avoid annotating the high-pressure layer section of gathering the well and take place to tell the down-hole passageway that liquid backward flow caused and block up, not only can reach the effect that promotes the expulsion, can also reduce notes and gather well washing number of times and operation well number simultaneously, and then guarantee the steady oil and go up to produce.
Drawings
FIG. 1 is a schematic cross-sectional view of an anti-backflow packer for a polymer injection well according to an embodiment of the present invention;
FIG. 2 is a front view of an anti-backflow packer for a polymer injection well according to an embodiment of the present invention;
fig. 3 is the utility model discloses polymer injection well is with preventing plug axonometric drawing that backflows.
Illustration of the drawings:
1-fishing head; 2-pressing the cap; 3-a spring; 4-a cam; 5-the plug body; 6-sealing ring A; 7-reducing the pressure ring; 8-anti-reflux joint; 9-an anti-reflux body; 10-anti-backflow blocking ball; 11-sealing ring B; 12-open slot.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides an embodiment: notes gather well and use anti-backflow blanking plug, including blanking plug main part 5 and anti-backflow main part 9, the inside below of anti-backflow main part 9 is equipped with anti-backflow stifled ball 10, anti-backflow main part 9 outside below connection open slot 12, anti-backflow main part 9 top is equipped with anti-backflow joint 8, anti-backflow joint 8 is connected through falling clamping ring 7 with blanking plug main part 5, blanking plug main part 5 top installation detachable gland 2, blanking plug main part 5 inside top movable mounting salvages head 1, salvages head 1 bottom top in cam 4 top, cam 4 is installed inside blanking plug main part 5, blanking plug main part 5 outside is inlayed 2 at least sealing washer A6, at least 2 sealing washer B11 are inlayed to open slot 12 outside, anti-backflow joint 8, anti-backflow main part 9, anti-backflow stifled ball 10 constitute the seeker jointly.
In this embodiment, the anti-reverse flow joint 8 is embedded and installed at the top end of the anti-reverse flow main body 9, and the anti-reverse flow joint 8 is detachably connected with the anti-reverse flow main body 8.
In practical application, two ends of the pressure reducing ring 7 are respectively connected with the blanking plug main body 5 and the guide head, the top end of the pressure reducing ring 7 is embedded and installed below the blanking plug main body 5, and the bottom end of the pressure reducing ring 7 is movably connected with the guide head.
In this embodiment, the pressure reducing ring 7 is formed by connecting a plurality of beads in series, the pressure reducing ring 7 functions to reduce the pressure of the passing polymer mixture by using a string-type structure, and the pressure reducing ring 7 can prevent viscosity reduction.
In practical application, the fishing head 1 penetrates through the interior of the blanking plug main body 5 and extends to the top end of the pressing cap 2;
wherein, the outer wall of the fishing head 1 and the middle inside the pressure cap 2 are provided with a spring 3.
The working principle of the backflow-preventing blanking plug for the polymer injection well is described in detail as follows:
the embodiment utilizes the principle of precaution in advance, improves the guide head structure of former notes stopper bottom of gathering, replaces the edge groove open-type of the original structure of guide head with single current valve formula, avoids annotating the high-pressure interval of gathering the well and takes place to tell the liquid backward flow and cause down-hole channel blocking.
In actual use, the seeker of the embodiment is connected with the pressure reducing ring 7 below the blanking plug main body 5 and then is put into the water distributor, when a polymer injection well is injected positively, high-pressure liquid flow inside the polymer injection well can push open the backflow preventing blocking ball 10, the high-pressure liquid flow is injected into a stratum under the action of the pressure reducing ring 7, even if long-time well closing, main water injection line perforation, damage of an injection pump, replacement of production gates and other inducing factors occur, the polymer injection well is subjected to backflow prevention, the backflow preventing blocking ball 10 of the embodiment can fall into the open slot 12 in the lower portion of the backflow preventing main body 9 under the action of gravity and stratum liquid flow pressure, then the effect of closing an injection channel can be achieved, due to the fact that the injection channel is closed, stratum liquid can be prevented from entering a shaft, stratum media can be guaranteed not to flow backwards into a downhole tubular column, and blocking of the water injection channel is avoided.
In this embodiment, this blanking plug structural design is reasonable, satisfy the demand of actual work during installation, simultaneously because the device's operation is fairly simple, can effectively avoid annotating some problems that appear among the well operating condition, under actual situation, sometimes can be because injection pressure is too high in the well, lead to the palirrhea injection passage that blocks up of high-pressure layer section, thereby cause the blanking plug to drag for or the unable operation of test instrument, through using the device, not only can promote the expulsion effect, can also reduce notes and gather well washing number of times and operation well number of times, and then reach the purpose that produces and provide powerful assurance for oil stabilization.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (5)
1. The utility model provides a prevent plug that backflows for polymer injection well which characterized in that: the method comprises the following steps:
the plug comprises a plug main body (5) and an anti-backflow main body (9), wherein an anti-backflow blocking ball (10) is arranged below the inner part of the anti-backflow main body (9);
an open groove (12) is connected below the outer part of the anti-backflow main body (9);
an anti-reverse flow joint (8) is arranged above the anti-reverse flow main body (9);
the anti-backflow connector (8) is connected with the blanking plug main body (5) through a pressure reducing ring (7);
the top end of the blanking plug main body (5) is provided with a detachable pressing cap (2);
a fishing head (1) is movably arranged above the inner part of the blanking plug main body (5);
the bottom of the fishing head (1) is propped against the upper part of the cam (4);
the cam (4) is arranged inside the blanking plug main body (5);
at least 2 sealing rings A (6) are embedded outside the blanking plug main body (5);
at least 2 sealing rings B (11) are embedded outside the open groove (12);
the backflow prevention connector (8), the backflow prevention main body (9) and the backflow prevention blocking ball (10) jointly form a guide head.
2. The backflow prevention blanking plug for the polymer injection well is characterized in that the backflow prevention connector (8) is embedded and installed at the top end of the backflow prevention main body (9), and the backflow prevention connector (8) is detachably connected with the backflow prevention main body (9).
3. The backflow-preventing blanking plug for the polymer injection well is characterized in that the top end of the pressure reducing ring (7) is embedded and installed below the blanking plug body (5), and the bottom end of the pressure reducing ring (7) is movably connected with a guide head.
4. The backflow-preventing blanking plug for polymer injection wells according to claim 1, characterized in that the fishing head (1) extends through the inside of the blanking plug body (5) and extends to the top end of the pressing cap (2).
5. The backflow preventer according to claim 1, wherein a spring (3) is arranged between the outer wall of the fishing head (1) and the interior of the pressure cap (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222926503.4U CN218439308U (en) | 2022-11-03 | 2022-11-03 | Anti-backflow packer for polymer injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222926503.4U CN218439308U (en) | 2022-11-03 | 2022-11-03 | Anti-backflow packer for polymer injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218439308U true CN218439308U (en) | 2023-02-03 |
Family
ID=85074419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222926503.4U Active CN218439308U (en) | 2022-11-03 | 2022-11-03 | Anti-backflow packer for polymer injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218439308U (en) |
-
2022
- 2022-11-03 CN CN202222926503.4U patent/CN218439308U/en active Active
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