CN214741263U - Injection allocation device - Google Patents
Injection allocation device Download PDFInfo
- Publication number
- CN214741263U CN214741263U CN202121138507.5U CN202121138507U CN214741263U CN 214741263 U CN214741263 U CN 214741263U CN 202121138507 U CN202121138507 U CN 202121138507U CN 214741263 U CN214741263 U CN 214741263U
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- China
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- floating piston
- hole
- water injection
- mounting hole
- blanking plug
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Abstract
The utility model provides a distributor. Relates to the technical field of oil field downhole tools. The bottom of the mounting hole where the blanking plug is located is provided with a floating piston, a spring is arranged between the bottom of the floating piston and the bottom surface of the mounting hole, a side hole is formed between the mounting hole and the outside of the main body below the floating piston, a bypass hole is formed between the main channel of the main body and the mounting hole, the upper portion of the floating piston is provided with an ejector rod, the top of the ejector rod is provided with a conical column, and the conical column is connected with a conical ring surface formed on a water distribution hole of the blanking plug in a sealing fit manner. The utility model discloses following beneficial effect has: only when water injection pressure is higher than formation pressure, the water injection passageway can be opened, when stopping annotating or water injection pressure descends, the water injection passageway is when injection pressure reduces formation pressure certain range, and the water injection passageway is closed promptly, and formation sand easily can not get into from the water injection hole of joining in marriage the notes ware, avoids joining in marriage adjustable stopper sand in the notes ware and blocks up the influence later stage water injection, well-flushing and test, does not influence the sectional area in the hole of joining in marriage of stopper simultaneously, does not influence the water injection flow.
Description
The technical field is as follows:
the utility model belongs to the technical field of the oil field instrument technique in the pit and specifically relates to injection allocation ware.
Background art:
most of domestic oil field separate layer water injection adopts an injection allocation device which is mostly an eccentric injection allocation device, the injection allocation device body is provided with a lateral overflowing channel when meeting the requirement of water injection, when a certain water injection layer is tested, the injection of other layers of water quantity is not influenced, but the injection allocation device has the main problem that when a separate injection well slightly produces sand, because a water injection well stops injecting and other reasons, formation sand easily enters from a lateral hole of the injection allocation device, and therefore the sand blockage of an adjustable stopper in the injection allocation device influences later stage water injection, well washing and testing.
The utility model has the following contents:
in order to solve the problem, the utility model provides an injection allocation device.
The technical scheme of the utility model is that: join in marriage notes ware, including the top connection, go up the adapter sleeve, right the body, the blanking plug, a main part, the water injection hole, the adapter sleeve down, guide body and lower clutch, the mounting hole bottom at blanking plug place is equipped with floating piston, floating piston passes through sealing washer clearance fit with the mounting hole, be equipped with the spring between floating piston bottom and the mounting hole bottom surface, position below the floating piston, it has the limit hole to open between mounting hole and the main part outside, above the floating piston, it has the by-pass hole to open between the main entrance of main part and the mounting hole, floating piston upper portion is equipped with the ejector pin, there is the circular cone post at the ejector pin top, the circular cone post is connected with the circular cone anchor ring face seal fit of opening on the water distribution hole of blanking plug.
The compression degree of the spring is as follows: when the pressure above the floating piston is 0.01-0.02 MPa higher than the pressure below the floating piston, the floating piston starts to move downwards.
When the ejector pin props against the water distribution hole, the upper end face of the floating piston is still located below the bypass hole.
The ejector rod is made of 2Cr13, and the part where the water distribution hole is located is made of WCB.
The utility model discloses following beneficial effect has: only when water injection pressure is higher than the stratum pressure by 0.01-0.02 MPa, the water injection channel can be opened, when the water injection is stopped or the water injection pressure is reduced, when the water injection channel reduces the injection pressure to the stratum pressure by 0.01-0.02 MPa, the water injection channel is closed, stratum sand can not enter from a water injection hole of the injection allocation device easily, the influence of sand blockage of the adjustable plugging device in the injection allocation device on later-stage water injection, well washing and testing is avoided, meanwhile, the sectional area of the water distribution hole of the plugging device is not influenced, and the water injection flow is not influenced.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an enlarged view of fig. 1 at a.
In the figure, 1-an upper joint, 2-an upper connecting sleeve, 3-a righting body, 4-a blanking plug, 5-a main body, 6-a lower connecting sleeve, 7-a guide body, 8-a lower joint, 9-a water injection hole, 10-a bypass hole, 11-a floating piston, 12-a spring, 13-a side hole, 14-a mandril, 15-a water distribution hole, 16-a main channel and 17-a mounting hole.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
the injection allocation device is characterized by being shown by combining a graph 1 and a graph 2 and comprising an upper connector 1, an upper connecting sleeve 2, a centralizing body 3, a blanking plug 4, a main body 5, a water injection hole 9, a lower connecting sleeve 6, a guide body 7 and a lower connector 8, wherein a floating piston 11 is arranged at the bottom of a mounting hole 17 where the blanking plug 4 is located, the floating piston 11 is in clearance fit with the mounting hole 17 through a sealing ring, a spring 12 is arranged between the bottom of the floating piston 11 and the bottom surface of the mounting hole 17, a position below the floating piston 11 is provided with a side hole 13 between the mounting hole 17 and the outer part of the main body 5, the upper surface of the floating piston 11 is provided with a bypass hole 10 between a main channel 16 of the main body 5 and the mounting hole 17, an ejector rod 14 is arranged at the upper part of the floating piston 11, a conical column is arranged at the top of the ejector rod 14, and the conical ring surface opened on the water distribution hole 15 of the blanking plug 4 are in sealing fit connection.
The degree of compression of the spring 12 is: when the pressure above the floating piston 11 is greater than the pressure below the floating piston 11 by 0.01-0.02 MPa, the floating piston 11 starts to move downwards, a water injection channel is opened, the water injection pressure is arranged at the upper part of the floating piston 11, and the formation pressure transmitted by the side hole 13 is arranged below the floating piston 11, the water injection channel can be opened only when the water injection pressure is greater than the formation pressure by 0.01-0.02 MPa, when the water injection is stopped or the water injection pressure is reduced, the water injection channel is closed when the injection pressure is reduced to the range of 0.01-0.02 MPa, formation sand can not easily enter from a water injection hole 9 of the injection allocation device 4, and the influence of sand blockage of a blanking plug in the injection allocation device on later-stage water injection, well washing and testing is avoided.
When the ejector rod 14 abuts against the water distribution hole 15, the upper end face of the floating piston 11 is still located below the bypass hole 10, the liquid pressure of the bypass hole 10 always acts on the upper portion of the floating piston 11, and the closing and opening of the water injection channel are determined by the up-down pressure difference of the floating piston 11.
The ejector rod 14 is made of 2Cr13, the part where the water distribution hole 15 is located is made of WCB, and the ejector rod and the WCB are used as a hard sealing pair, so that the sealing is reliable, and meanwhile, the corrosion is avoided, and the sealing effect is reduced.
Claims (4)
1. The utility model provides an injection allocation device, includes top connection (1), goes up adapter sleeve (2), rights body (3), blanking plug (4), main part (5), water injection hole (9), lower adapter sleeve (6), guide body (7) and lower clutch (8), its characterized in that: mounting hole (17) bottom at blanking plug (4) place is equipped with floating piston (11), floating piston (11) passes through sealing washer clearance fit with mounting hole (17), be equipped with spring (12) between floating piston (11) bottom and mounting hole (17) bottom surface, position below floating piston (11), it has side opening (13) to open between mounting hole (17) and main part (5) outside, above floating piston (11), it has by-pass hole (10) to open between main passage (16) and the mounting hole (17) of main part (5), floating piston (11) upper portion is equipped with ejector pin (14), there is the circular cone post at ejector pin (14) top, the circular cone ring face sealing fit connection that opens out on the water distribution hole (15) of circular cone post and blanking plug (4).
2. The dispenser of claim 1, wherein: the compression degree of the spring (12) is as follows: when the pressure above the floating piston (11) is 0.01-0.02 MPa higher than the pressure below the floating piston (11), the floating piston (11) starts moving downwards.
3. The dispenser of claim 1, wherein: when the ejector rod (14) is abutted against the water distribution hole (15), the upper end surface of the floating piston (11) is still positioned below the bypass hole (10).
4. The dispenser of claim 1, wherein: the material of the ejector rod (14) is 2Cr13, and the material of the part where the water distribution hole (15) is located is WCB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121138507.5U CN214741263U (en) | 2021-05-25 | 2021-05-25 | Injection allocation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121138507.5U CN214741263U (en) | 2021-05-25 | 2021-05-25 | Injection allocation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214741263U true CN214741263U (en) | 2021-11-16 |
Family
ID=78625291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121138507.5U Active CN214741263U (en) | 2021-05-25 | 2021-05-25 | Injection allocation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214741263U (en) |
-
2021
- 2021-05-25 CN CN202121138507.5U patent/CN214741263U/en active Active
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