CN215718622U - Flow regulating device - Google Patents
Flow regulating device Download PDFInfo
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- CN215718622U CN215718622U CN202121467905.1U CN202121467905U CN215718622U CN 215718622 U CN215718622 U CN 215718622U CN 202121467905 U CN202121467905 U CN 202121467905U CN 215718622 U CN215718622 U CN 215718622U
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Abstract
The embodiment of the application relates to the technical field of oil field polymer injection and water injection, in particular to a flow regulating device. The embodiment of the application is used for adjusting the injection flow rate of polymer or water into an oil layer, and the flow adjusting device comprises a device main body and an adjusting part. The device main part includes oversheath and driving medium, and the driving medium setting is inside the oversheath, and the driving medium can follow the motion of oversheath axis. The adjusting part comprises a flow pipe and a throttling core, one end of the flow pipe is connected with the outer sheath, an inlet is formed in one end, far away from the outer sheath, of the flow pipe, an outlet is formed in the side wall of the flow pipe, the throttling core is arranged in the flow pipe, and one end, far away from the inlet, of the throttling core is connected with the transmission part. The outer contour size of the over-flow pipe gradually increases along the direction from the inlet to the outer sheath, the outer contour size of the throttling core gradually increases along the direction from the inlet to the outer sheath, and the outer periphery of the throttling core protrudes outwards to form a protruding structure. The flow regulating device can effectively improve the flow regulating capacity of the polymer or water.
Description
Technical Field
The embodiment of the application relates to the technical field of oil field polymer injection and water injection, in particular to a flow regulating device.
Background
In the field of oil field exploitation, polymer injection and water injection for oil displacement have become important means for improving the recovery ratio of oil fields. However, in the related art, the used polymer injection and water injection device is not suitable for the characteristics of large oil reservoir pressure difference and small flow, so that the flow regulation capability of the water injection or polymer injection device is poor in the actual operation process, and a certain obstacle is brought to the yield increase of the oil field.
SUMMERY OF THE UTILITY MODEL
The application discloses flow control device uses this flow control device can effectively improve the flow control ability to polymer or water in the injection oil reservoir.
The flow regulating device disclosed herein is used for regulating the injection flow of polymer or water into an oil formation, the flow regulating device comprising:
the device comprises a device main body and a driving part, wherein the device main body comprises an outer sheath and a driving part, the driving part is arranged inside the outer sheath, and the driving part can move along the axis of the outer sheath;
the adjusting part comprises a flow pipe and a throttling core, one end of the flow pipe is connected with the outer sheath, one end of the flow pipe, far away from the outer sheath, is provided with an inlet, the inlet is used for injecting the polymer or water, the side wall of the flow pipe is provided with an outlet, the throttling core is arranged in the flow pipe, and one end of the throttling core, far away from the inlet, is connected with the transmission part;
the outer contour size of the over-flow pipe gradually increases along the direction from the inlet to the outer sheath, the outer contour size of the throttling core gradually increases along the direction from the inlet to the outer sheath, and the outer periphery of the throttling core protrudes outwards to form a protruding structure.
Further, the bulge structure is arranged on the periphery of the throttling core in a continuous circle.
Further, a plurality of the convex structures arranged in a continuous circumference are arranged in the axial direction of the throttling spindle.
Further, the oversheath is including the bearing section of thick bamboo and the spacing section of thick bamboo that are connected, the spacing section of thick bamboo keep away from the one end of bearing section of thick bamboo with the overcurrent pipe is connected.
Further, be equipped with the bearing in the bearing section of thick bamboo, the bearing is connected bearing section of thick bamboo inner wall, just the bearing housing is established the periphery of driving medium.
Further, the bearing is a thrust bearing.
Further, the driving medium is including transmission thick stick and the thrust rod that is connected, the thrust rod is kept away from the one end of transmission thick stick with the throttle core is connected, just the thrust bearing cover is established the periphery of transmission thick stick.
Further, a sealing element and a supporting cylinder are arranged between the outer sheath and the transmission piece.
Further, a centering piece is arranged between the outer sheath and the transmission piece.
Further, the outlet extends away from and perpendicular to the axis of the throttle tube.
Compared with the prior art, the embodiment of the application has the following beneficial effects:
the flow regulating device in the embodiment of the application improves the flow regulating capacity of polymer or water injected into an oil layer.
Specifically, in the present embodiment, the flow rate adjustment device includes a device main body and an adjustment portion. The transmission medium setting of device main part is inside the oversheath, and the overflow pipe and the oversheath of regulating part are connected, and the setting of throttle core still is connected with transmission medium one end inside the overflow pipe, has just so formed whole flow control device. On the one hand, in the embodiment of the application, the throttling core is connected with the transmission piece, and the transmission piece can move along the axis of the outer sheath, so that the gap between the throttling core and the flow-through pipe is changed, the amount of polymer or water flowing into the gap from the inlet is changed, the flow rate of solution flowing out of the outlet is changed, and the flow rate and the pressure difference of the polymer or the water are adjusted by utilizing the size of the gap between the throttling core and the flow-through pipe.
On the other hand, in the embodiment of the application, the outer contour sizes of the flow-through pipe and the throttling core are gradually increased along the direction from the inlet to the outer sheath, that is, the flow-through pipe and the throttling core are in a tapered structure with an upward opening, and the outer periphery of the throttling core protrudes outwards to form a protruding structure, so that although the clearance outside the tapered throttling core is in direct proportion to the stroke of the tapered throttling core during flow regulation, the clearance outside the throttling core is not in direct proportion to flow and pressure difference, so that the polymer or water flow regulation presents a nonlinear trend, the flow regulation range and the pressure difference control range are greatly increased, the adaptability is enhanced, the flow regulation capability of the polymer or water is further improved, and the oil field production increase can also be promoted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the external structure of a flow regulator according to an embodiment of the present invention;
FIG. 2 is a schematic axial sectional view of a flow regulating device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a throttle core in an embodiment of the present application.
Reference numerals:
1-a device body;
11-outer sheath, 111-bearing cylinder, 111 a-bearing and 112-limiting cylinder;
12-transmission, 121-transmission lever, 122-thrust rod;
13-a seal;
14-a support cylinder;
15-a centering member;
2-an adjustment section;
21-flow pipe, 22-inlet, 23-outlet;
22-throttle core, 221-bulge structure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
In the embodiments of the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the embodiments of the present application and embodiments thereof, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present application can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
As the development of an oil field enters the middle and later stages, polymer flooding and water injection flooding are important technical means for improving the recovery ratio of the oil field, the current polymer flooding process has certain requirements on polymer flow and pressure control, the existing polymer regulating method has the problems of small flow regulating range, small controllable pressure difference range and the like, when the pressure difference is large, the flow is still large even close to a closed state, or when the flow is small, the pressure difference is small even close to the closed state, the method is not suitable for the characteristics of large oil reservoir pressure difference and small flow, and the method basically has no regulating characteristic on the injection quantity of underground polymers in the actual operation process. The inventors have repeatedly searched and invented the flow rate regulating device of the present invention in the embodiments of the present application.
The technical solution of the present application will be further described with reference to the following embodiments and accompanying drawings.
The embodiment of the application discloses a flow regulating device for adjusting the injection flow of polymer or water to an oil layer, and the flow regulating device comprises:
the device comprises a device main body 1, wherein the device main body 1 comprises an outer sheath 11 and a transmission piece 12, the transmission piece 12 is arranged inside the outer sheath 11, and the transmission piece 12 can move along the axis of the outer sheath 11;
the adjusting part 2 comprises a flow passing pipe 21 and a throttling core 22, one end of the flow passing pipe 21 is connected with the outer sheath 11, one end, far away from the outer sheath 11, of the flow passing pipe 21 is provided with an inlet 22, the inlet 22 is used for injecting polymer or water, the side wall of the flow passing pipe 21 is provided with an outlet 23, the throttling core 22 is arranged in the flow passing pipe 21, and one end, far away from the inlet 22, of the throttling core 22 is connected with the transmission piece 12;
the outer contour dimension of the flow-passing pipe 21 gradually increases along the direction from the inlet 22 to the outer sheath 11, the outer contour dimension of the throttling core 22 gradually increases along the direction from the inlet 22 to the outer sheath 11, and the outer periphery of the throttling core 22 protrudes outward to form a protruding structure 221.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of an external structure of a flow rate adjusting device according to an embodiment of the present application, and fig. 2 is a cross-sectional view of the flow rate adjusting device in an axial direction. It can be seen in fig. 1 and 2 that the device body 1 comprises an outer jacket 11 and an inner transmission piece 12. After inserting the flow control device in the oil reservoir, oversheath 11 can play a guard's effect to the flow control device, avoids driving medium 12 to receive the destruction. The lower part of the outer sheath 11 is connected to a flow pipe 21, and a throttle core 22 is provided inside the flow pipe 21. Because the lower end of the transmission member 12 is connected with the upper end of the throttling core 22, and the transmission member 12 can move along the axis of the outer sheath 11, when the transmission member 12 moves along the axis of the outer sheath 11, the transmission member 12 drives the throttling core 22 to move. When the transmission member 12 moves upward, the throttling core 22 is driven to move upward, and at this time, the gap between the throttling core 22 and the overflow pipe 21 becomes large, so that the amount of polymer or water injected into the oil layer becomes large. When the transmission member 12 moves downwards, the throttling core 22 is driven to move downwards, and at the moment, the gap between the throttling core 22 and the overflowing pipe 21 becomes smaller, so that the amount of polymer or water injected into an oil layer becomes smaller. It should be noted that, in the embodiment of the present application, the outer sheath 11 and the flow tube 21 may be connected by welding or by screwing, and are not limited in this respect.
In the embodiment of the present application, please refer to fig. 3, and fig. 3 is a schematic structural diagram of the throttle core 22. Because the outer contour sizes of the flow-through pipe 21 and the throttling core 22 are gradually increased along the direction from the inlet 22 (i.e. the lower end in fig. 1 and fig. 2) to the outer sheath 11, and because the outer periphery of the throttling core 22 forms a convex structure, when the gap between the throttling core 22 and the flow-through pipe 21 is changed, the gap outside the throttling core 22 has a nonlinear ratio to the flow rate, so that the flow rate regulating capability of the flow rate regulating device on polymers or water is greatly improved.
The flow regulating device in the embodiment of the application improves the flow regulating capacity of polymer or water injected into an oil layer.
Specifically, in the present embodiment, the flow rate adjustment device includes a device main body 1 and an adjustment portion 2. The transmission piece 12 of the device main body 1 is arranged inside the outer sheath 11, the overflowing pipe 21 of the adjusting part 2 is connected with the outer sheath 11, and the throttling core 22 is arranged inside the overflowing pipe 21 and is also connected with one end of the transmission piece 12, so that the whole flow adjusting device is formed. On the one hand, in the embodiment of the present application, since the throttling core 22 is connected to the transmission member 12, and the transmission member 12 can move along the outer sheath 11 along the axis of the outer sheath 11, the gap between the throttling core 22 and the flow-through pipe 21 changes, so that the amount of the polymer or water flowing into the gap from the inlet 22 changes, and the flow rate of the solution flowing out from the outlet 23 changes, thereby realizing the adjustment of the flow rate and the pressure difference of the polymer or water by using the size of the gap between the throttling core 22 and the flow-through pipe 21.
On the other hand, in the embodiment of the present application, the outer dimensions of the flow pipe 21 and the throttling core 22 are gradually increased along the direction from the inlet 22 to the outer sheath 11, that is, both are tapered structures with upward openings, and the outer periphery of the throttling core 22 protrudes outward to form the protruding structure 221, so that the gap outside the tapered throttling core 22 is in direct proportion to the stroke of the tapered throttling core 22 during flow rate adjustment, but the gap outside the throttling core 22 is not in direct proportion to the flow rate and the pressure difference, so that the adjustment of the polymer or the water flow rate shows a non-linear trend, the adjustment range of the flow rate and the control range of the pressure difference are greatly increased, the adaptability is enhanced, the adjustment capability of the flow rate of the polymer or the water is further improved, and the production increase of the oil field can also be promoted.
In the embodiment of the present application, in order to make the flow rate adjusting device have higher adjusting capability for polymer or water, the convex structures 221 are arranged in a continuous circle on the periphery of the throttle core 22.
As shown in fig. 2, the convex structures 221 are not distributed irregularly on the outer periphery of the throttle core 22, but are arranged circumferentially around the outer periphery of the throttle core 22. After the arrangement, when the throttling core 22 descends, the outer wall of the throttling core 22 is firmly contacted with the inner wall of the over-flow pipe 21, and polymer or water can be effectively prevented from overflowing from a gap between the throttling core 22 and the over-flow pipe 21. In addition, the arrangement of the convex structure 221 on the outer periphery of the throttle core 22 also makes it easier to control the flow rate adjustment when the flow rate adjustment is performed.
In the embodiment of the present application, the raised structure 221 on the outer periphery of the throttle core 22 may be provided with only one circle, and in order to further facilitate the regulation of the injected polymer and water, the raised structure 221 provided with a plurality of successive circles is provided in the axial direction of the throttle core 22. It will be appreciated that the polymer or water is better regulated at this point when several raised structures 221 are provided on the wick 22.
In the implementation of the present application, in order to make the transmission member 12 more convenient to install, the outer sheath 11 includes a bearing cylinder 111 and a limiting cylinder 112 connected, and one end of the limiting cylinder 112 far away from the bearing cylinder 111 is connected with the overflow pipe 21.
Referring specifically to fig. 2, it can be seen that the upper bearing cylinder 111 is connected to the lower limiting cylinder 112, and the limiting cylinder 112 is disposed such that the transmission member 12 can be installed therein. It can be seen that the position of the limiting cylinder 112 connected to the bearing cylinder 111 is close to the middle position, so that the limiting cylinder 112 can limit the transmission member 12, and avoid the irregular swinging in the horizontal direction. It should be noted that, in the embodiment of the present application, the transmission member 12 may be a transmission lead screw made of metal, and the bearing cartridge 111 may be a bearing tube made of metal, which is not particularly limited herein.
In the embodiment of the present application, the transmission member 12 can move up and down along its own axis, and in order to make the operation more labor-saving, a bearing 111-a is disposed in the bearing cylinder 111, the bearing 111-a is connected to the inner wall of the bearing cylinder 111, and the bearing 111-a is sleeved on the periphery of the transmission member 12.
With reference to fig. 2, it can be seen that the bearing 111-a is disposed inside the upper portion of the bearing cylinder 111, and the bearing 111-a is sleeved on the transmission member 12, since the bearing 111-a is disposed, the transmission member 12 can rotate more smoothly in the bearing 111-a, thereby preventing the transmission member 12 from being jammed and not screwed. At this time, the transmission member 12 is connected with the limit connector through threads, so that the transmission member 12 can be lifted or lowered in a screwing mode, and further, the gap between the throttling core 22 and the overflow pipe 21 is changed, and the injection amount is adjusted.
To facilitate adjustment, the bearing 111-a in the embodiment of the present application is a thrust bearing 111-a. It will be appreciated that the provision of the thrust bearing 111-a provides some thrust when rotating the transmission member 12, thereby further facilitating adjustment. It should be noted that the thrust bearing 111-a used herein is a commercially available thrust bearing 111-a.
In the embodiment of the present application, the transmission member 12 includes a transmission rod 121 and a thrust rod 122 connected to each other, one end of the thrust rod 122 away from the transmission rod 121 is connected to the throttle core 22, and the thrust bearing 111-a is sleeved on the periphery of the transmission rod 121. Referring to FIG. 2, it can be seen that the transmission member 12 includes an upper transmission bar 121 and a thrust rod 122. The upper end of the thrust rod 122 is provided with a sinking groove, and the transmission rod 121 sinks into the sinking groove, so that the connection between the two is more stable. Due to the arrangement of the thrust rod 122, the transmission lever 121 can be lifted or lifted more laborsavingly.
In order to prevent the flow rate adjusting device from sand jam failure, a sealing element 13 and a supporting cylinder 14 are arranged between the outer sheath 11 and the transmission piece 12 in the embodiment of the application. In fig. 2, it can be seen that a sealing element 13 is arranged between the outer sheath 11 and the transmission member 12, the sealing element 13 can be a sealing ring made of rubber, and the sealing element 13 can prevent sand from blocking the transmission member 12 and rotating. In addition, a supporting cylinder 14 is arranged between the outer sheath 11 and the transmission piece 12, the outer end of the supporting cylinder 14 is connected to the limiting joint, the inner end of the supporting cylinder 14 is connected to the transmission piece 12, and the supporting cylinder 14 enables the transmission piece 12 to be more stable when ascending or descending.
In the embodiment of the present application, since the length of the transmission member 12 can be longer, in order to prevent the failure of the flow rate adjusting device caused by the position misalignment when the length of the transmission member 12 is too long, a centering member 15 is disposed between the outer sheath 11 and the transmission member 12. As shown in fig. 2, the L-shaped centering member 15 disposed between the transmission member 12 and the outer sheath 11 prevents the transmission member 12 from swinging at the lower end, thereby ensuring the accuracy of flow rate adjustment.
In the embodiment of the present application, in order to prevent oil or other impurities in the oil layer from entering the device from the outlet 23, the outlet 23 extends in a direction away from and perpendicular to the axis of the throttle pipe. As shown in fig. 2 in particular, it can be seen that the outlet 23 protrudes to the right, so that the protruding outlet 23 is inserted into the oil layer, thereby preventing impurities from directly entering the gap between the choke core 22 and the flow-through pipe 21.
When the flow regulating device is used, the specific use process is as follows: the polymer is injected from the bottom inlet 22, through the tapered flow-through tube 21 and out the side outlet 23. Because the thrust rod 122 is provided with the limiting groove, the transmission rod 121 is rotated during adjustment, and the transmission nut drives the thrust rod 122 and the throttling core 22 to move up and down, so that the gap between the throttling core 22 and the taper hole of the flow passing pipe 21 is adjusted, and the adjustment of the polymer flow and the pressure difference is realized.
The flow rate adjusting device disclosed in the embodiments of the present application is described in detail above, and the principle and implementation of the embodiments of the present application are described herein by applying specific examples, and the description of the embodiments above is only used to help understand the flow rate adjusting device and its core ideas of the embodiments of the present application; meanwhile, for a person skilled in the art, according to the idea of the embodiment of the present application, the specific implementation and the application range may be changed, and in summary, the content of the present specification should not be construed as a limitation to the embodiment of the present application.
Claims (10)
1. A flow regulating device for regulating the injection flow of a polymer or water into an oil formation, the flow regulating device comprising:
the device comprises a device main body and a driving part, wherein the device main body comprises an outer sheath and a driving part, the driving part is arranged inside the outer sheath, and the driving part can move along the axis of the outer sheath;
the adjusting part comprises a flow pipe and a throttling core, one end of the flow pipe is connected with the outer sheath, one end of the flow pipe, far away from the outer sheath, is provided with an inlet, the inlet is used for injecting the polymer or water, the side wall of the flow pipe is provided with an outlet, the throttling core is arranged in the flow pipe, and one end of the throttling core, far away from the inlet, is connected with the transmission part;
the outer contour size of the over-flow pipe gradually increases along the direction from the inlet to the outer sheath, the outer contour size of the throttling core gradually increases along the direction from the inlet to the outer sheath, and the outer periphery of the throttling core protrudes outwards to form a protruding structure.
2. The flow regulating device of claim 1, wherein the raised structure is disposed in a continuous circumferential arrangement about the periphery of the orifice core.
3. The flow rate regulating device according to claim 2, wherein the convex structure provided in a continuous circumferential arrangement is provided in plurality in the axial direction of the throttle shaft.
4. The flow regulating device of claim 1, wherein the outer sheath comprises a bearing cylinder and a limiting cylinder connected, and an end of the limiting cylinder remote from the bearing cylinder is connected with the flow tube.
5. The flow regulating device according to claim 4, wherein a bearing is disposed in the bearing cylinder, the bearing is connected to an inner wall of the bearing cylinder, and the bearing is sleeved on an outer periphery of the transmission member.
6. A flow regulating device in accordance with claim 5, wherein said bearing is a thrust bearing.
7. The flow regulating device according to claim 6, wherein the transmission member comprises a transmission rod and a thrust rod which are connected, one end of the thrust rod, which is far away from the transmission rod, is connected with the throttling core, and the thrust bearing is sleeved on the periphery of the transmission rod.
8. A flow regulating device according to any one of claims 1 to 7, characterized in that a seal and a support cylinder are provided between the outer jacket and the transmission member.
9. A flow regulating device according to any one of claims 1 to 7, characterized in that a centering member is provided between the outer jacket and the transmission member.
10. A flow regulating device according to any of claims 1-7, characterized in that the outlet extends away from and perpendicular to the flow pipe axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121467905.1U CN215718622U (en) | 2021-06-30 | 2021-06-30 | Flow regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121467905.1U CN215718622U (en) | 2021-06-30 | 2021-06-30 | Flow regulating device |
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| Publication Number | Publication Date |
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| CN215718622U true CN215718622U (en) | 2022-02-01 |
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| CN202121467905.1U Active CN215718622U (en) | 2021-06-30 | 2021-06-30 | Flow regulating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427388A (en) * | 2022-02-17 | 2022-05-03 | 吴巧英 | Combined type adjusting Christmas tree based on internal flow positioning for oil extraction in oil field |
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2021
- 2021-06-30 CN CN202121467905.1U patent/CN215718622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427388A (en) * | 2022-02-17 | 2022-05-03 | 吴巧英 | Combined type adjusting Christmas tree based on internal flow positioning for oil extraction in oil field |
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