CN215718626U - Flow regulating device for separate injection well - Google Patents
Flow regulating device for separate injection well Download PDFInfo
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- CN215718626U CN215718626U CN202121972489.0U CN202121972489U CN215718626U CN 215718626 U CN215718626 U CN 215718626U CN 202121972489 U CN202121972489 U CN 202121972489U CN 215718626 U CN215718626 U CN 215718626U
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Abstract
The utility model provides a flow regulating device for a split injection well, which comprises a shell, a regulating rod, a screw rod, an outer throttling core and an inner throttling core, wherein the lower part of the regulating rod penetrates through the shell to be inserted into the shell; the outer throttling core is internally provided with a flow passing cavity and is sleeved on the screw rod, the outer throttling core can slide along the axial direction of the screw rod, the middle part of the outer throttling core is provided with a pin hole, an anti-rotation pin is arranged in the pin hole, and the side surface of the shell is provided with a long hole corresponding to the anti-rotation pin; the inner throttling core is fixedly connected with the shell, and the upper part of the inner throttling core can penetrate into the overflowing cavity; the lower part of the shell is provided with a liquid inlet hole, the side surface of the shell is provided with a total liquid outlet hole, and the side surface of the outer throttling core is provided with a liquid outlet hole. The utility model has the advantages of realizing double-channel flow regulation, increasing the adjustable area, improving the regulation precision, expanding the regulation range, being matched with an electric measuring and regulating instrument for use and improving the operation efficiency.
Description
Technical Field
The utility model belongs to the technical field of downhole operation tools, and particularly relates to a flow regulating device for a split injection well.
Background
After the oil field is put into operation, the formation pressure of the oil field is reduced, and in order to maintain the formation pressure near the saturation pressure and maintain good productivity of the oil field, solution needs to be injected into the formation to supplement formation loss energy. When injecting water into an oil well, some water injection wells are injected in multiple layers, the injection amount of each layer is different, an injection allocation device is required to be installed for layering and component injection, a flow regulating mechanism in the injection allocation device in the prior art controls the injection amount of injection solution of each layer section by regulating the length of a throttling core, and the technical defects are that the throttling core for flow allocation is of a single-channel annular pressure reduction groove structure, the flow allocation range is small, and the regulation precision is low.
Disclosure of Invention
The novel invention has the conception that the double flow passage with the inner throttling core and the outer throttling core is designed, the size of the flow passage is changed by adjusting the relative position of the inner throttling core and the outer throttling core, so that the purpose of increasing the adjustable flow area is realized, the adjustment precision is improved, the adjustment range is enlarged, and the defects in the prior art are overcome.
In order to solve the technical problems, the utility model adopts the technical scheme that: a flow regulating device of a separate injection well comprises a shell, a regulating rod, a screw rod, an outer throttling core and an inner throttling core, wherein the screw rod, the outer throttling core and the inner throttling core are arranged in the shell from top to bottom;
the outer throttling core is internally provided with a flow passing cavity, the outer throttling core is sleeved on the screw rod, the outer throttling core is internally provided with a thread matched with the screw rod, the outer throttling core can slide along the axial direction of the screw rod, the middle part of the outer throttling core is provided with a pin hole, an anti-rotation pin is arranged in the pin hole, the side surface of the shell is provided with a long hole corresponding to the anti-rotation pin, and the anti-rotation pin is limited in the long hole and can slide along the direction of the long hole;
the inner throttling core is fixedly connected with the shell, and the upper part of the inner throttling core can penetrate into the overflowing cavity;
the lower part of the shell is provided with a liquid inlet hole, the side surface of the shell is provided with a total liquid outlet hole, the side surface of the outer throttling core is provided with a liquid outlet hole, a gap between the outer wall of the outer throttling core and the shell forms an outer overflowing channel, and the overflowing inner cavity and the outer wall of the inner throttling core form an inner overflowing channel.
In the above structure, the injected solution (chemical flooding) enters the housing from the liquid inlet hole, when the liquid reaches the intersection of the outer throttling core and the inner throttling core, the liquid is divided into two parts, one part enters the outer overflowing channel and is discharged from the total liquid outlet hole, and the other part enters the inner overflowing channel and is discharged from the total liquid outlet hole after flowing out from the liquid outlet hole. The adjusting rod is rotated to drive the outer throttling core to move up and down, so that the flow area of the inner throttling channel and the flow area of the outer throttling channel are changed.
Furthermore, an upper pressure spring and a lower pressure spring are further arranged in the shell, the upper pressure spring and the lower pressure spring are respectively fixed at the upper part and the lower part of the shell, and the upper pressure spring and the lower pressure spring limit the adjusting stroke of the outer throttling core between the upper pressure spring and the lower pressure spring. The upper compression spring and the lower compression spring are arranged, so that the outer throttling core can be effectively prevented from being in hard contact with each other when being adjusted to the limit position, and the buffering and protecting effects are achieved.
Furthermore, for the needs of assembly and processing, still set up and flow through the seat, it is fixed in to flow through the seat in the shell, the lower part of interior throttle core is fixed in flow through on the seat, flow through and have the discharge orifice on the seat.
Further, for the needs of assembly and processing, still set up the lower clutch, the lower clutch is fixed in the shell lower part, the feed liquor hole is located on the lower clutch.
The utility model has the advantages and positive effects that: the dual-channel flow regulation is realized, the adjustable area is increased, the regulation precision is improved, and the regulation range is expanded; can be used in cooperation with an electric measuring and adjusting instrument, and improves the operation efficiency.
Drawings
FIG. 1 is a schematic view, partly in section, of the overall structure of the utility model;
in the figure: 1-adjusting a rod; 2-a housing; 3-pressing a spring; 4-sealing ring; 5-outer throttle core; 6-anti-rotation pin; 7-a spring; 8-lower pressure spring; 9-inner throttle core; 10-an overflow seat; 11-lower joint; 12-a screw rod; 13-liquid outlet holes; 14-total liquid outlet holes; 15-outer flow passage.
Detailed Description
As shown in fig. 1, the utility model provides a flow regulating device for a separate injection well, which comprises a shell 2, a regulating rod 1, a screw rod 12, an outer throttling core 5 and an inner throttling core 9, wherein the screw rod 12, the outer throttling core 5 and the inner throttling core 9 are arranged in the shell 2 from top to bottom, the lower part of the regulating rod 1 penetrates through the shell 2 to be deeply inserted into the shell 2, the upper part of the regulating rod 1 is positioned outside the shell 2, the regulating rod 1 is rotatably connected with the shell 2, the regulating rod 1 freely rotates around the axis of the regulating rod, the screw rod 12 is fixed at the lower part of the regulating rod 1, the screw rod 12 is coaxial with the regulating rod 1, and the screw rod 12 can rotate under the driving of the regulating rod 1;
the outer throttling core 5 is internally provided with a flow passing cavity, the outer throttling core 5 is sleeved on the screw rod 12, the outer throttling core 5 is internally provided with a thread matched with the screw rod 12, the outer throttling core 5 can slide along the axial direction of the screw rod 12, the middle part of the outer throttling core 5 is provided with a pin hole, an anti-rotation pin 6 is arranged in the pin hole, the side surface of the shell 2 is provided with a long hole corresponding to the anti-rotation pin 6, and the anti-rotation pin 6 is limited in the long hole and can slide along the direction of the long hole;
the lower part of the shell 2 is provided with a flow passing seat 10, the flow passing seat 10 is provided with a flow passing hole, the inner throttling core 9 is fixed on the flow passing seat 10, and the upper part of the inner throttling core 9 can go deep into the flow passing cavity. The bottom of the shell 2 is provided with a lower joint 11, the lower joint 11 is connected with the shell 2 through threads, and the lower joint is provided with a liquid inlet hole 13.
The side surface of the shell 2 is provided with a total liquid outlet hole 14, the side surface of the outer throttling core 5 is provided with a liquid outlet hole 13, a gap between the outer wall of the outer throttling core 5 and the shell 2 forms an outer overflowing channel, and an overflowing inner cavity and the outer wall of the inner throttling core 9 form an inner overflowing channel.
An upper pressure spring 3 and a lower pressure spring 8 are further arranged in the shell 2, the upper pressure spring 3 is fixedly sleeved outside the screw rod 12, the lower pressure spring 8 is fixedly sleeved on the lower portion of the inner throttling core 9, and the upper pressure spring 3 and the lower pressure spring 8 limit the adjusting stroke of the outer throttling core 5 between the upper pressure spring 3 and the lower pressure spring 8.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (4)
1. Divide injection well flow control device, its characterized in that: the screw rod, the outer throttling core and the inner throttling core are arranged in the shell from top to bottom, the lower portion of the adjusting rod penetrates through the shell and penetrates into the shell, the upper portion of the adjusting rod is located outside the shell, the adjusting rod is rotatably connected with the shell, the adjusting rod freely rotates around the axis of the adjusting rod, the screw rod is fixed to the lower portion of the adjusting rod, the screw rod and the adjusting rod are coaxial, and the screw rod can rotate under the driving of the adjusting rod;
the outer throttling core is internally provided with a flow passing cavity, the outer throttling core is sleeved on the screw rod, the outer throttling core is internally provided with a thread matched with the screw rod, the outer throttling core can slide along the axial direction of the screw rod, the middle part of the outer throttling core is provided with a pin hole, an anti-rotation pin is arranged in the pin hole, the side surface of the shell is provided with a long hole corresponding to the anti-rotation pin, and the anti-rotation pin is limited in the long hole and can slide along the direction of the long hole;
the inner throttling core is fixedly connected with the shell, and the upper part of the inner throttling core can penetrate into the overflowing cavity;
the lower part of the shell is provided with a liquid inlet hole, the side surface of the shell is provided with a total liquid outlet hole, the side surface of the outer throttling core is provided with a liquid outlet hole, a gap between the outer wall of the outer throttling core and the shell forms an outer overflowing channel, and the overflowing inner cavity and the outer wall of the inner throttling core form an inner overflowing channel.
2. The dispensing well flow rate adjustment device of claim 1, wherein: the shell is internally provided with an upper pressure spring and a lower pressure spring, the upper pressure spring and the lower pressure spring are respectively fixed at the upper part and the lower part of the shell, and the upper pressure spring and the lower pressure spring limit the adjusting stroke of the outer throttling core between the upper pressure spring and the lower pressure spring.
3. The split injection well flow rate adjusting device according to claim 1 or 2, wherein: the flow-through structure comprises a shell, and is characterized by further comprising a flow-through seat, wherein the flow-through seat is fixed in the shell, the lower part of the inner throttling core is fixed on the flow-through seat, and the flow-through seat is provided with a flow-through hole.
4. The dispensing well flow regulating device according to claim 3, wherein: the liquid inlet device further comprises a lower joint, the lower joint is fixed on the lower portion of the shell, and the liquid inlet hole is located in the lower joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121972489.0U CN215718626U (en) | 2021-08-21 | 2021-08-21 | Flow regulating device for separate injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121972489.0U CN215718626U (en) | 2021-08-21 | 2021-08-21 | Flow regulating device for separate injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215718626U true CN215718626U (en) | 2022-02-01 |
Family
ID=79999385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121972489.0U Active CN215718626U (en) | 2021-08-21 | 2021-08-21 | Flow regulating device for separate injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215718626U (en) |
-
2021
- 2021-08-21 CN CN202121972489.0U patent/CN215718626U/en active Active
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