CA2911725C - Fluid control device and fluid control system - Google Patents
Fluid control device and fluid control system Download PDFInfo
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- CA2911725C CA2911725C CA2911725A CA2911725A CA2911725C CA 2911725 C CA2911725 C CA 2911725C CA 2911725 A CA2911725 A CA 2911725A CA 2911725 A CA2911725 A CA 2911725A CA 2911725 C CA2911725 C CA 2911725C
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- 239000012530 fluid Substances 0.000 title claims abstract description 159
- 238000007789 sealing Methods 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 230000008859 change Effects 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 238000010586 diagram Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001973 epigenetic effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/02—Down-hole chokes or valves for variably regulating fluid flow
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
Abstract
The present invention discloses a fluid control device and a fluid control system. The fluid control device comprises a body, wherein the body has an inner cavity, and a side wall of the inner cavity is a cambered surface; the body comprises a first surface and a second surface which are opposite; an inlet is formed in the side wall of the inner cavity; an adjusting component is arranged at one end of the through hole passing through the first surface and the second surface; the adjusting component comprises a sliding part. The fluid control device and the fluid control system can automatically adjust the fluid velocity according to the property change of the fluid that enters the inner cavity from the inlet, so as to automatically adjust the yields of various layer segments and ensure a more balanced oil production speed.
Description
Fluid Control Device and Fluid Control System Technical Field The present invention relates to the technical field of oil production, and particularly to a fluid control device and a fluid control system.
Background technology At present, in the oil production process of horizontal wells, due to different suction pressures on various layer segments of horizontal segments, protogenic and epigenetic heterogeneity of stratum, fluid mobility difference and other reasons, dominant water flowing channels are formed in the stratum, resulting in water coning, water channeling and water cresting. In the case of water breakthrough, the daily oil production of the horizontal wells is decreased abruptly; after edge-bottom water onrush, a large amount of dead oil in oil layers cannot enter wellbores, and thus the oil recovery is obviously decreased. The huge withdrawal rate after the water breakthrough increases the lifting energy consumption and the ground processing energy consumption and meanwhile causes a huge pressure on ground processing equipment, so that the oil production of oil wells is severely affected.
In view of the problem, a variety of water control and well completion technologies of horizontal wells are adopted in China and abroad, such as segmented variable density screen water control and well completion, central tube water control and well completion, inflow control device (ICD) water control and well completion and the like, and the ICD water control and well completion technology is the most common technology at present in particular.
Although the ICD water control technology has played a certain role in delaying the water breakthrough of the horizontal wells, prolonging the water-free oil production periods of the horizontal wells to a certain extent and improving the yield of the oil wells, the technology needs to combine reservoir numerical simulation, needs to predict the production conditions of the wellbores according to accurate formation data, and cannot be replaced in a downhole process, so that the ICD
water =
control technology has no automatic adjustment function.
Summary of Invention In view of this, the present invention provides a fluid control device and a fluid control system. The main purpose is to enable the fluid control device and the fluid control system to automatically adjust the flow of the fluid according to the properties of the fluid, so as to automatically adjust the yields of various layer segments and ensure a more balanced oil production speed. Of course, it is not limited to the oil production conditions of horizontal wells, the oil production conditions of vertical wells or the oil production conditions of deviated wells herein.
To fulfill the aforementioned purpose, the present invention mainly adopts the following technical solutions:
On the one hand, embodiments of the present invention provide a fluid control device, comprising:
a body, wherein the body has an inner cavity, and the side wall of the inner cavity is a cambered surface; wherein: the body comprises a first surface and a second surface which are opposite, and a through hole passing through the first surface and the second surface sequentially penetrates through the first surface, a top surface of the inner cavity, a bottom surface of the inner cavity and the second surface;
an inlet is formed in the side wall of the inner cavity, the inlet is formed in the tangential direction of the side wall of the inner cavity, and an external environment is communicated with the inner cavity via the inlet;
an adjusting component is arranged at one end of the through hole, and the other end of the through hole is communicated with an outlet of the inner cavity;
the adjusting component comprises a sliding part, wherein the sliding part is located in the through hole, the sliding part forms a sliding seal with the hole wall of the through hole, and the sliding part can slide in the axial direction of the through hole, wherein one end of the sliding part leads to the inner cavity, and the other end of the sliding part is communicated with the external environment; and the pressure that a fluid entering the inner cavity from the inlet imposes on one
Background technology At present, in the oil production process of horizontal wells, due to different suction pressures on various layer segments of horizontal segments, protogenic and epigenetic heterogeneity of stratum, fluid mobility difference and other reasons, dominant water flowing channels are formed in the stratum, resulting in water coning, water channeling and water cresting. In the case of water breakthrough, the daily oil production of the horizontal wells is decreased abruptly; after edge-bottom water onrush, a large amount of dead oil in oil layers cannot enter wellbores, and thus the oil recovery is obviously decreased. The huge withdrawal rate after the water breakthrough increases the lifting energy consumption and the ground processing energy consumption and meanwhile causes a huge pressure on ground processing equipment, so that the oil production of oil wells is severely affected.
In view of the problem, a variety of water control and well completion technologies of horizontal wells are adopted in China and abroad, such as segmented variable density screen water control and well completion, central tube water control and well completion, inflow control device (ICD) water control and well completion and the like, and the ICD water control and well completion technology is the most common technology at present in particular.
Although the ICD water control technology has played a certain role in delaying the water breakthrough of the horizontal wells, prolonging the water-free oil production periods of the horizontal wells to a certain extent and improving the yield of the oil wells, the technology needs to combine reservoir numerical simulation, needs to predict the production conditions of the wellbores according to accurate formation data, and cannot be replaced in a downhole process, so that the ICD
water =
control technology has no automatic adjustment function.
Summary of Invention In view of this, the present invention provides a fluid control device and a fluid control system. The main purpose is to enable the fluid control device and the fluid control system to automatically adjust the flow of the fluid according to the properties of the fluid, so as to automatically adjust the yields of various layer segments and ensure a more balanced oil production speed. Of course, it is not limited to the oil production conditions of horizontal wells, the oil production conditions of vertical wells or the oil production conditions of deviated wells herein.
To fulfill the aforementioned purpose, the present invention mainly adopts the following technical solutions:
On the one hand, embodiments of the present invention provide a fluid control device, comprising:
a body, wherein the body has an inner cavity, and the side wall of the inner cavity is a cambered surface; wherein: the body comprises a first surface and a second surface which are opposite, and a through hole passing through the first surface and the second surface sequentially penetrates through the first surface, a top surface of the inner cavity, a bottom surface of the inner cavity and the second surface;
an inlet is formed in the side wall of the inner cavity, the inlet is formed in the tangential direction of the side wall of the inner cavity, and an external environment is communicated with the inner cavity via the inlet;
an adjusting component is arranged at one end of the through hole, and the other end of the through hole is communicated with an outlet of the inner cavity;
the adjusting component comprises a sliding part, wherein the sliding part is located in the through hole, the sliding part forms a sliding seal with the hole wall of the through hole, and the sliding part can slide in the axial direction of the through hole, wherein one end of the sliding part leads to the inner cavity, and the other end of the sliding part is communicated with the external environment; and the pressure that a fluid entering the inner cavity from the inlet imposes on one
2 end of the sliding part changes with the properties of the fluid, so that the sliding part slides up and down in the axial direction of the through hole to adjust the flow of the fluid entering the inner cavity.
The purposes of the present invention and solutions to technical problems thereof can be further fulfilled by adopting the following technical measures.
In the foregoing fluid control device, the adjusting component further comprises:
a fixed part, wherein the fixed part is fixed to the body and is used for limiting the slide displacement of the sliding part.
In the foregoing fluid control device, the body comprises:
a first part, wherein the first surface is arranged on the first part, and the first part further comprises a third surface opposite to the first surface; and a second part, wherein the second surface is arranged on the second part, and the second part further comprises a fourth surface opposite to the second surface;
wherein the through hole comprises a first through hole arranged in the first part and a second through hole arranged in the second part, wherein the first through hole passes through the first surface and the third surface, the second through hole passes through the second surface and the fourth surface, and the first through hole is communicated with the second through hole;
the first part is fixedly connected with the second part; and the third surface and the fourth surface are arranged oppositely, and the adjusting component is arranged at the end of the first through hole.
In the foregoing fluid control device, a first groove is formed in the third surface;
and/or a second groove is formed in the fourth surface; wherein the third surface and the fourth surface are arranged oppositely, and the inner cavity is formed by the first groove and/or the second groove after the first part and the second part are buckled; and both the first through hole and the second through hole arc communicated with the
The purposes of the present invention and solutions to technical problems thereof can be further fulfilled by adopting the following technical measures.
In the foregoing fluid control device, the adjusting component further comprises:
a fixed part, wherein the fixed part is fixed to the body and is used for limiting the slide displacement of the sliding part.
In the foregoing fluid control device, the body comprises:
a first part, wherein the first surface is arranged on the first part, and the first part further comprises a third surface opposite to the first surface; and a second part, wherein the second surface is arranged on the second part, and the second part further comprises a fourth surface opposite to the second surface;
wherein the through hole comprises a first through hole arranged in the first part and a second through hole arranged in the second part, wherein the first through hole passes through the first surface and the third surface, the second through hole passes through the second surface and the fourth surface, and the first through hole is communicated with the second through hole;
the first part is fixedly connected with the second part; and the third surface and the fourth surface are arranged oppositely, and the adjusting component is arranged at the end of the first through hole.
In the foregoing fluid control device, a first groove is formed in the third surface;
and/or a second groove is formed in the fourth surface; wherein the third surface and the fourth surface are arranged oppositely, and the inner cavity is formed by the first groove and/or the second groove after the first part and the second part are buckled; and both the first through hole and the second through hole arc communicated with the
3 inner cavity.
In the foregoing fluid control device, the body further comprises:
a swirl body, wherein the swirl body is arranged between the first part and the second part, the swirl body comprises a bottom surface and a top surface, the bottom surface is integrated closely with the fourth surface, the top surface is integrated closely with the third surface, the inner cavity is arranged in the swirl body, the top surface is provided with an opening, and the opening is communicated with the first through hole and the inner cavity; wherein:
the inlet is formed in the side wall of the swirl body, and an outlet communicated with the inner cavity is formed in the bottom surface; and a gap is located between the parts of the third surface and the fourth surface beyond the swirl body, the gap is communicated with the inlet, and the outlet is communicated with the second through hole.
In the foregoing fluid control device, the adjusting component further comprises:
a sealing element, wherein the sealing element is used for sealing a gap between the sliding part and the first through hole.
In the foregoing fluid control device, the sealing element is a trumpet-shaped elastic sealing ring, one end of the sealing element is butted against the sliding part, and the other end of the sealing element is butted against the body; and when the sliding part is sliding towards the direction of the inner cavity, the sealing element is compressed, and when the sliding part is sliding towards the direction away from the inner cavity, the sealing element is recovered gradually.
In the foregoing fluid control device, the longitudinal section of the sliding part is T-shaped, the small end of the trumpet-shaped elastic sealing ring is butted against the lower end of a cross arm of the T-shaped sliding part, and the large end of the trumpet-shaped elastic sealing ring is butted against the body.
In the foregoing fluid control device, the fixed part is provided with external threads, the inner wall of the first through hole is provided with internal threads, and the fixed part is fixedly connected with the first through hole via the cooperation
In the foregoing fluid control device, the body further comprises:
a swirl body, wherein the swirl body is arranged between the first part and the second part, the swirl body comprises a bottom surface and a top surface, the bottom surface is integrated closely with the fourth surface, the top surface is integrated closely with the third surface, the inner cavity is arranged in the swirl body, the top surface is provided with an opening, and the opening is communicated with the first through hole and the inner cavity; wherein:
the inlet is formed in the side wall of the swirl body, and an outlet communicated with the inner cavity is formed in the bottom surface; and a gap is located between the parts of the third surface and the fourth surface beyond the swirl body, the gap is communicated with the inlet, and the outlet is communicated with the second through hole.
In the foregoing fluid control device, the adjusting component further comprises:
a sealing element, wherein the sealing element is used for sealing a gap between the sliding part and the first through hole.
In the foregoing fluid control device, the sealing element is a trumpet-shaped elastic sealing ring, one end of the sealing element is butted against the sliding part, and the other end of the sealing element is butted against the body; and when the sliding part is sliding towards the direction of the inner cavity, the sealing element is compressed, and when the sliding part is sliding towards the direction away from the inner cavity, the sealing element is recovered gradually.
In the foregoing fluid control device, the longitudinal section of the sliding part is T-shaped, the small end of the trumpet-shaped elastic sealing ring is butted against the lower end of a cross arm of the T-shaped sliding part, and the large end of the trumpet-shaped elastic sealing ring is butted against the body.
In the foregoing fluid control device, the fixed part is provided with external threads, the inner wall of the first through hole is provided with internal threads, and the fixed part is fixedly connected with the first through hole via the cooperation
4 between the external threads and the internal threads;
the fixed part is provided with a first stepped hole and a second stepped hole which are communicated with each other, wherein the first stepped hole and the second stepped hole are coaxial with the first through hole, the diameter of the first stepped hole is smaller than that of the second stepped hole, and a first stepped surface is formed between the first stepped hole and the second stepped hole;
the cross arm of the sliding part is located in the second stepped hole, the sliding part can slide in the second stepped hole, and the first stepped surface limits the sliding part to slide out from the second stepped hole; and the sliding part is communicated with the external environment via the first stepped hole.
In the foregoing fluid control device, the first through hole comprises a third stepped hole and a fourth stepped hole which are communicated with each other, wherein the diameter of the third stepped hole is greater than that of the fourth stepped hole, and a second stepped surface is formed between the third stepped hole and the fourth stepped hole; wherein: the fixed part is arranged in the third stepped hole, and the fixed part is in threaded connection with the third stepped hole;
the vertical part of the T-shaped sliding part is embedded in the fourth stepped hole, and the second stepped surface limits the T-shaped cross arm to slide out from the second stepped hole; and the large end of the trumpet-shaped elastic sealing ring is embedded in a groove of the second stepped surface, and the large end of the trumpet-shaped elastic sealing ring is fixed between the fixed part and the first part.
In the foregoing fluid control device, the second part is provided with a groove, and a part or all of the swirl body is embedded in the groove.
In the foregoing fluid control device, a bulge is arranged on the bottom surface of the swirl body towards the outside of the inner cavity, the bulge stretches into the second through hole, and the outlet is formed in the bulge.
In the foregoing fluid control device, two inlets are formed, the fluid enters in the
the fixed part is provided with a first stepped hole and a second stepped hole which are communicated with each other, wherein the first stepped hole and the second stepped hole are coaxial with the first through hole, the diameter of the first stepped hole is smaller than that of the second stepped hole, and a first stepped surface is formed between the first stepped hole and the second stepped hole;
the cross arm of the sliding part is located in the second stepped hole, the sliding part can slide in the second stepped hole, and the first stepped surface limits the sliding part to slide out from the second stepped hole; and the sliding part is communicated with the external environment via the first stepped hole.
In the foregoing fluid control device, the first through hole comprises a third stepped hole and a fourth stepped hole which are communicated with each other, wherein the diameter of the third stepped hole is greater than that of the fourth stepped hole, and a second stepped surface is formed between the third stepped hole and the fourth stepped hole; wherein: the fixed part is arranged in the third stepped hole, and the fixed part is in threaded connection with the third stepped hole;
the vertical part of the T-shaped sliding part is embedded in the fourth stepped hole, and the second stepped surface limits the T-shaped cross arm to slide out from the second stepped hole; and the large end of the trumpet-shaped elastic sealing ring is embedded in a groove of the second stepped surface, and the large end of the trumpet-shaped elastic sealing ring is fixed between the fixed part and the first part.
In the foregoing fluid control device, the second part is provided with a groove, and a part or all of the swirl body is embedded in the groove.
In the foregoing fluid control device, a bulge is arranged on the bottom surface of the swirl body towards the outside of the inner cavity, the bulge stretches into the second through hole, and the outlet is formed in the bulge.
In the foregoing fluid control device, two inlets are formed, the fluid enters in the
5 tangential direction of the cambered surface of the inner cavity, and the directions of the two inlets are consistent.
In the foregoing fluid control device, each inlet is provided with two forks, and the two forks divide the fluid into two paths.
In the foregoing fluid control device, the material of the swirl body is cemented carbide.
In the foregoing fluid control device, the material of the sliding part is cemented carbide or ceramic.
On the other hand, the embodiments of the present invention provide a fluid control system, comprising:
a base tube, wherein the base tube is provided with an internal channel, and a liquid inlet is formed in the side wall of the base tube; and at least one fluid control device, wherein the at least one fluid control device is arranged on the base tube in the radial direction, and the outlet of the fluid control device is communicated with the liquid inlet.
The purposes of the present invention and solutions to technical problems thereof can also be further fulfilled by adopting the following technical measures.
In the foregoing fluid control system, a plurality of fluid control devices are provided, and the plurality of fluid control devices are uniformly surrounded on the periphery of the base tube in the radial direction.
The foregoing fluid control system further comprises:
a filter screen surrounding the base tube; wherein an annular hollow cavity is formed between the filter screen and the base tube; and external fluid enters the fluid control device after entering the annular hollow cavity via the filter screen.
By means of the aforementioned technical solutions, the fluid control device and the fluid control system of the present invention at least have the following advantages:
In the technical solutions proposed in the present invention, the inlet is formed in
In the foregoing fluid control device, each inlet is provided with two forks, and the two forks divide the fluid into two paths.
In the foregoing fluid control device, the material of the swirl body is cemented carbide.
In the foregoing fluid control device, the material of the sliding part is cemented carbide or ceramic.
On the other hand, the embodiments of the present invention provide a fluid control system, comprising:
a base tube, wherein the base tube is provided with an internal channel, and a liquid inlet is formed in the side wall of the base tube; and at least one fluid control device, wherein the at least one fluid control device is arranged on the base tube in the radial direction, and the outlet of the fluid control device is communicated with the liquid inlet.
The purposes of the present invention and solutions to technical problems thereof can also be further fulfilled by adopting the following technical measures.
In the foregoing fluid control system, a plurality of fluid control devices are provided, and the plurality of fluid control devices are uniformly surrounded on the periphery of the base tube in the radial direction.
The foregoing fluid control system further comprises:
a filter screen surrounding the base tube; wherein an annular hollow cavity is formed between the filter screen and the base tube; and external fluid enters the fluid control device after entering the annular hollow cavity via the filter screen.
By means of the aforementioned technical solutions, the fluid control device and the fluid control system of the present invention at least have the following advantages:
In the technical solutions proposed in the present invention, the inlet is formed in
6 the side wall of the inner cavity, the inlet is formed in the tangential direction of the side wall of the inner cavity, and when the velocity of a fluid flowing into the inner cavity from the inlet is very high, the fluid enters the inner cavity in the tangential direction and forms vortexes under the action of the side wall of the inner cavity. The inner cavity is communicated with the through hole, the adjusting component is arranged at one end of the through hole, and the other end of the through hole is communicated with the outlet. The sliding part of the adjusting component is arranged in the through hole and forms a seal with the through hole, and the sliding part can slide in the axial direction of the through hole. Since one end of the sliding part leads to the inner cavity, the sliding part may cause a volume change of the inner cavity when sliding. When the flow velocity of the fluid is higher, a large amount of fluid enters the inner cavity to form vortexes. Since the pressure at a vortex center is reduced, the fluid pressure at the outlet near the position of the vortex center is reduced accordingly; therefore the sliding part slides towards the direction of the inner cavity because of the coaction of a negative pressure of the fluid and an external environment pressure, which reduces the volume of the inner cavity, and the flow of the fluid flowing into the inner cavity is reduced, and thus a certain throttling effect is fulfilled. Therefore, the fluid control device provided in the present invention can automatically adjust the fluid velocity according to the property change of the fluid that enters the inner cavity from the inlet, so as to adjust the flow of the fluid.
The aforementioned description is merely a summary of the technical solutions of the present invention, and in order that the technical means of the present invention can be understood more clearly and can be implemented in accordance with the contents of the specification, a detailed description will be given below via preferred embodiments of the present invention, in combination with accompanying drawings.
Brief Description of Drawings Fig. 1 is an outline view of a fluid control device provided in one embodiment of the present invention;
The aforementioned description is merely a summary of the technical solutions of the present invention, and in order that the technical means of the present invention can be understood more clearly and can be implemented in accordance with the contents of the specification, a detailed description will be given below via preferred embodiments of the present invention, in combination with accompanying drawings.
Brief Description of Drawings Fig. 1 is an outline view of a fluid control device provided in one embodiment of the present invention;
7 Fig. 2 is a schematic diagram of a section structure of a fluid control device provided in one embodiment of the present invention;
Fig. 3 is a schematic diagram of a section structure of another implementation of a fluid control device provided in one embodiment of the present invention;
Fig. 4 is a schematic diagram of a section structure of another implementation of a fluid control device provided in one embodiment of the present invention;
Fig. 5 is a schematic diagram of a three-dimensional structure of a swirl body of a fluid control device provided in one embodiment of the present invention;
Fig. 6 is a schematic diagram of a three-dimensional structure of a sealing element of a fluid control device provided in one embodiment of the present invention;
Fig. 7 is a schematic diagram of a section structure of a first part and an adjusting component of a fluid control device provided in one embodiment of the present invention;
Fig. 8 is a schematic diagram of a section structure of a fixed part of a fluid control device provided in one embodiment of the present invention;
Fig. 9 is a schematic diagram of a section structure of a first part of a fluid control device provided in one embodiment of the present invention;
Fig. 10 is a schematic diagram of a longitudinal section structure of an implementation of a fluid control system provided in another embodiment of the present invention;
Fig. 11 is a structural schematic diagram of a cross section of a fluid control system provided in another embodiment of the present invention; and Fig. 12 is a schematic diagram of a longitudinal section structure of another implementation of a fluid control system provided in another embodiment of the present invention.
Detailed Description of Embodiments To further illustrate technical means and effects adopted in the present invention for fulfilling predetermined invention purposes, embodiments, structures, features and effects of the application according to the present invention will be described below in
Fig. 3 is a schematic diagram of a section structure of another implementation of a fluid control device provided in one embodiment of the present invention;
Fig. 4 is a schematic diagram of a section structure of another implementation of a fluid control device provided in one embodiment of the present invention;
Fig. 5 is a schematic diagram of a three-dimensional structure of a swirl body of a fluid control device provided in one embodiment of the present invention;
Fig. 6 is a schematic diagram of a three-dimensional structure of a sealing element of a fluid control device provided in one embodiment of the present invention;
Fig. 7 is a schematic diagram of a section structure of a first part and an adjusting component of a fluid control device provided in one embodiment of the present invention;
Fig. 8 is a schematic diagram of a section structure of a fixed part of a fluid control device provided in one embodiment of the present invention;
Fig. 9 is a schematic diagram of a section structure of a first part of a fluid control device provided in one embodiment of the present invention;
Fig. 10 is a schematic diagram of a longitudinal section structure of an implementation of a fluid control system provided in another embodiment of the present invention;
Fig. 11 is a structural schematic diagram of a cross section of a fluid control system provided in another embodiment of the present invention; and Fig. 12 is a schematic diagram of a longitudinal section structure of another implementation of a fluid control system provided in another embodiment of the present invention.
Detailed Description of Embodiments To further illustrate technical means and effects adopted in the present invention for fulfilling predetermined invention purposes, embodiments, structures, features and effects of the application according to the present invention will be described below in
8 detail, in combination with the accompanying drawings and preferred embodiments.
In the following description, different expressions such as "one embodiment"
or "embodiments" do not necessarily refer to the same embodiment. In addition, particular features, structures or characteristics in one or more embodiments can be combined in any appropriate form.
As shown in Fig. 1 and Fig. 2, a fluid control device proposed in one embodiment of the present invention comprises a body 100, wherein the body 100 has an inner cavity 200, and a side wall of the inner cavity 200 is a cambered surface. The body 100 comprises a first surface 111 and a second surface 121 which are opposite, and a through hole 300 passing through the first surface 111 and the second surface sequentially penetrates through the first surface 111, a top surface 210 of the inner cavity, a bottom surface 220 of the inner cavity and the second surface 121.
An inlet 230 is formed in the side wall of the inner cavity 200, the inlet 230 is arranged in a tangential direction of the side wall of the inner cavity 200, and an external environment is communicated with the inner cavity 200 via the inlet 230.
An adjusting component 400 is arranged at one end of the through hole 300, and the other end of the through hole 300 is communicated with the outlet of the inner cavity. The adjusting component 400 comprises a sliding part 410, wherein the sliding part 410 is located in the through hole 300, the sliding part 410 forms a sliding seal with a hole wall of the through hole 300, and the sliding part 410 can slide in an axial direction of the through hole 300, one end of the sliding part 410 leads to the inner cavity 200, and the other end of the sliding part 410 is communicated with the external environment. The pressure that a fluid entering the inner cavity 200 from the inlet 230 imposes on one end of the sliding part 410 changes with the properties of the fluid, so that the sliding part 410 slides up and down in the axial direction of the through hole 300 to adjust the flow of the fluid entering the inner cavity 200.
The basic principle thereof is as follows: low-viscosity fluid, such as water, gas and the like can form a vortex phenomenon under certain conditions. Vortexes can form huge energy loss, wherein the pressure at a vortex center is the lowest.
Generally, the
In the following description, different expressions such as "one embodiment"
or "embodiments" do not necessarily refer to the same embodiment. In addition, particular features, structures or characteristics in one or more embodiments can be combined in any appropriate form.
As shown in Fig. 1 and Fig. 2, a fluid control device proposed in one embodiment of the present invention comprises a body 100, wherein the body 100 has an inner cavity 200, and a side wall of the inner cavity 200 is a cambered surface. The body 100 comprises a first surface 111 and a second surface 121 which are opposite, and a through hole 300 passing through the first surface 111 and the second surface sequentially penetrates through the first surface 111, a top surface 210 of the inner cavity, a bottom surface 220 of the inner cavity and the second surface 121.
An inlet 230 is formed in the side wall of the inner cavity 200, the inlet 230 is arranged in a tangential direction of the side wall of the inner cavity 200, and an external environment is communicated with the inner cavity 200 via the inlet 230.
An adjusting component 400 is arranged at one end of the through hole 300, and the other end of the through hole 300 is communicated with the outlet of the inner cavity. The adjusting component 400 comprises a sliding part 410, wherein the sliding part 410 is located in the through hole 300, the sliding part 410 forms a sliding seal with a hole wall of the through hole 300, and the sliding part 410 can slide in an axial direction of the through hole 300, one end of the sliding part 410 leads to the inner cavity 200, and the other end of the sliding part 410 is communicated with the external environment. The pressure that a fluid entering the inner cavity 200 from the inlet 230 imposes on one end of the sliding part 410 changes with the properties of the fluid, so that the sliding part 410 slides up and down in the axial direction of the through hole 300 to adjust the flow of the fluid entering the inner cavity 200.
The basic principle thereof is as follows: low-viscosity fluid, such as water, gas and the like can form a vortex phenomenon under certain conditions. Vortexes can form huge energy loss, wherein the pressure at a vortex center is the lowest.
Generally, the
9 Reynolds number of a high-viscosity fluid (such as petroleum) is small, and an intense vortex is unlikely to form because of a larger viscous force. Therefore, by means of the property of vortex formation sensitive to viscosity, water throttling can be increased, while oil throttling can be decreased, so as to reduce the water content in an oil production operation.
Specifically, for example, in a segmented oil production operation of a horizontal well, the fluid control device provided in the present invention can be used for throttling an oil production segment with a large water content to reduce the oil production yield; while for an oil production segment with a small water content, the yield can be appropriately increased to achieve a balanced operation of an oil production rate.
In the technical solutions proposed in the present invention, the inlet is formed in the side wall of the inner cavity, the inlet is formed in the tangential direction of the side wall of the inner cavity, and when the velocity of a fluid flowing into the inner cavity from the inlet is very high, the fluid enters the inner cavity in the tangential direction and forms vortexes under the action of the side wall of the inner cavity. The inner cavity is communicated with the through hole, the adjusting component is arranged at one end of the through hole, and the other end of the through hole is communicated with the outlet. The sliding part of the adjusting component is arranged in the through hole and forms a seal with the through hole, and the sliding part can slide in the axial direction of the through hole. Since one end of the sliding part leads to the inner cavity, the sliding part may cause a volume change of the inner cavity when sliding. When the flow velocity of the fluid is higher, a large amount of fluid enters the inner cavity to form vortexes. Since the pressure at a vortex center is reduced, the fluid pressure at the outlet near the position of the vortex center is reduced accordingly; therefore the sliding part slides towards the direction of the inner cavity because of the coaction of a negative pressure of the fluid and an external environment pressure, which reduces the volume of the inner cavity, and the flow of the fluid flowing into the inner cavity is reduced, and thus a certain throttling effect is fulfilled. Therefore, the fluid control device provided in the present invention can automatically adjust the fluid velocity according to the property change of the fluid that enters the inner cavity from the inlet, so as to adjust the flow of the fluid.
Further, as shown in Fig. 1 and Fig. 2, the adjusting component 400 may further comprise a fixed part 420, wherein the fixed part 420 is fixed to the body 100 and is used for limiting the sliding displacement of the sliding part 410.
Further, as shown in Fig. 3 and Fig. 4, the body 100 may comprise a first part and a second part 120. The first surface 111 is arranged on the first part 110, and the first part 110 further comprises a third surface 112 opposite to the first surface 111.
The second surface 121 is arranged on the second part 120, and the second part further comprises a fourth surface 122 opposite to the second surface 121. The through hole 300 comprises a first through hole 310 formed in the first part 110 and a second through hole 320 formed in the second part 120, wherein the first through hole 310 passes through the first surface 111 and the third surface 112, the second through hole 320 passes through the second surface 121 and the fourth surface 122, and the first through hole 310 is communicated with the second through hole 320. The first part 110 is fixedly connected with the second part 120. The third surface 112 and the fourth surface 122 are arranged oppositely, and the adjusting component 400 is arranged at the end of the first through hole 310.
When the body 100 comprises the first part 110 and the second part 120, the inner cavity 200 can be fulfilled in two manners.
One manner is that, a first groove is formed in the third surface 112; or, a second groove is formed in the fourth surface 122; or, the first groove is formed in the third surface 112 and the second groove is formed in the fourth surface 122. Then, the third surface 112 and the fourth surface 122 are arranged oppositely, and the inner cavity 200 is formed by the first groove and/or the second groove after the first part 110 and the second part 120 are buckled. Both the first through hole 310 and the second through hole 320 are communicated with the inner cavity 200. Fig. 3 shows the inner cavity 200 which is formed by the second groove formed in the fourth surface 122.
The other manner is that, as shown in Fig. 4 and Fig. 5, the body 100 may further comprise a swirl body 130, wherein the swirl body 130 is arranged between the first part 110 and the second part 120, the swirl body 130 comprises a bottom surface 131 and a top surface 132, the bottom surface 131 is integrated closely with the fourth surface 122, the top surface 132 is integrated closely with the third surface 112, the inner cavity 200 is arranged in the swirl body 130, the top surface 132 is provided with an opening 133, and the opening 133 is communicated with the first through hole 310 and the inner cavity 200. The inlet 230 is formed in the side wall of the swirl body 130, and the outlet 240 communicated with the inner cavity 200 is formed in the bottom surface. A gap is located between the parts of the third surface 112 and the fourth surface 122 beyond the swirl body 130, the gap is communicated with the inlet 230, and the outlet 240 is communicated with the second through hole 320.
The working principle of the swirl body 130 is as follows: for low-viscosity fluid, such as water and the like, since the density thereof is large, the viscous force is small, and the inertial force is large, the tangential velocity at the inlet is large, the vortex intensity is larger, and the pressure loss is large as well. Meanwhile, a flowing path of rotating water is long, and the frictional resistance is enlarged along the path.
For high-viscosity fluid, such as oil and the like, since the density thereof is small, the viscous force is large, and the inertial force is small, when entering from the inlet, the fluid preferably enters the outlet in the radial direction, so that the tangential velocity is low, and vortex is unlikely to form.
It should be noted that, the two implementations are merely illustrations, but it does not represent that only the two implementations are available.
Further, as shown in Fig. 2 to Fig. 4, the adjusting component 400 may further comprise a sealing element 430, wherein the sealing element 430 is used for sealing a gap between the sliding part 410 and the first through hole 310. When the sliding part 410 forms a seal with the first through hole 310, the slide of the sliding part 410 can cause a pressure change of the inner cavity 200, so as to adjust the flow of the fluid entering the inner cavity 200.
Further, as shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 6, the sealing element 430 can be a trumpet-shaped elastic sealing ring, one end of the sealing element 430 is butted against the sliding part 410, and the other end of the sealing element 430 is butted against the body 100. When the sliding part 410 is sliding towards the direction of the inner cavity 200, the sealing element 430 is compressed, and when the sliding part 410 is sliding towards the direction away from the inner cavity 200, the sealing element 430 is recovered gradually. No matter the sliding part 410 slides towards the direction close to the inner cavity 200 or slides towards the direction away from the inner cavity 200, the elastic sealing ring can consistently come into close contact with the sliding part 410 under elasticity.
Further, as shown in Fig. 2 to Fig. 4, the longitudinal section of the sliding part 410 can be T-shaped, the small end of the trumpet-shaped elastic sealing ring is butted against the lower end of a cross arm of the T-shaped sliding part 410, and the large end of the trumpet-shaped elastic sealing ring is butted against the body 100.
Further, as shown in Fig. 7 and Fig. 8, the fixed part 420 is provided with external threads, the inner wall of the first through hole 310 is provided with internal threads, and the fixed part 420 is fixedly connected with the first through hole 310 via the cooperation between the external threads and the internal threads. The fixed part 420 is provided with a first stepped hole 421 and a second stepped hole 422 which are communicated with each other, wherein the first stepped hole 421 and the second stepped hole 422 are coaxial with the first through hole 310, the diameter of the first stepped hole 421 is smaller than that of the second stepped hole 422, and a first stepped surface 423 is formed between the first stepped hole 421 and the second stepped hole 422.
As shown in Fig. 7 and Fig. 8, the cross arm of the sliding part 410 is located in the second stepped hole 422, the sliding part 410 can slide in the second stepped hole 422, and the first stepped surface 423 limits the sliding part 410 to slide out from the second stepped hole 422. The sliding part 410 is communicated with the external environment via the first stepped hole 421.
Further, as shown in Fig. 7 and Fig. 9, the first through hole 310 may comprise a third stepped hole 311 and a fourth stepped hole 312 which are communicated with each other, the diameter of the third stepped hole 311 is greater than that of the fourth stepped hole 312, and a second stepped surface 313 is formed between the third stepped hole 311 and the fourth stepped hole 312. The fixed part 420 is arranged in the third stepped hole 311, and the fixed part 420 is in threaded connection with the third stepped hole 311. The vertical part of the T-shaped sliding part is embedded in the fourth stepped hole, and the second stepped surface 313 limits the T-shaped cross arm to slide out from the second stepped hole 422. The large end of the trumpet-shaped elastic sealing ring is embedded in a groove of the second stepped surface 313, and the large end of the trumpet-shaped elastic sealing ring is fixed between the fixed part 420 and the first part 110.
Further, as shown in Fig. 4, the second part 120 can be provided with a groove 125, and a part of or all of the swirl body 130 is embedded in the groove 125 to better fix the swirl body 130.
Further, as shown in Fig. 4, a bulge 134 is arranged along the bottom surface 131 of the swirl body 130 towards the outside of the inner cavity 200, the bulge 134 stretches into the second through hole 320 to further fix the swirl body 130, and the outlet 240 is formed in the bulge 134.
Further, as shown in Fig. 5, two inlets 230 can be formed, and when the fluid enters in the tangential direction of the cambered surface of the inner wall of the inner cavity 200, the directions of the two inlets 230 are consistent. For example, both the directions are clockwise directions or counterclockwise directions.
Further, as shown in Fig. 5, each inlet 230 is provided with two forks, and the two forks divide the fluid into two paths to promote the formation of vortexes.
Further, the material of the swirl body 130 can be cemented carbide. The cemented carbide is an alloy material which is made of a hard compound of a refractory metal and a binding metal via powder metallurgy technology. The cemented carbide has a series of excellent properties, such as high hardness, wearing resistance, better strength and toughness, heat resistance, corrosion resistance, etc. Therefore, when being used as the swirl body, the cemented carbide can be adapted to harsh environments of underground oil production operation, and can not only guarantee the working quality, but also can prolong the service life of the swirl body at the same time.
Further, the sliding part 410 bears the impact force of the fluid for a long time, the outline is simple and easy to process, and both the cemented carbide and ceramic have the characteristic of high hardness, therefore, the material of the sliding part 410 can be the cemented carbide or the ceramic. Of course, the material of the sliding part 410 is not limited herein.
As shown in Fig. 10, a fluid control system proposed in another embodiment of the present invention comprises a base tube 10 and at least one fluid control device 20.
The base tube 10 is provided with an internal channel 11, and a liquid inlet 12 is formed in the side wall of the base tube 10. The at least one fluid control device 20 is arranged on the base tube 10 in the radial direction, and the outlet 21 of the fluid control device 20 is communicated with the liquid inlet 12. The base tube 10 and the fluid control device 20 can be fixed with each other in the threaded connection manner as shown in Fig. 10 and can also be fixed with each other by welding.
Of course, the base tube and the fluid control device can also be fixed in other manners, which are not specifically limited herein.
The fluid control device comprises:
a body, wherein the body has an inner cavity, and the side wall of the inner cavity is a cambered surface; wherein:
the body comprises a first surface and a second surface which are opposite, and a through hole passing through the first surface and the second surface sequentially penetrates through the first surface, a top surface of the inner cavity, a bottom surface of the inner cavity and the second surface;
an inlet is formed in the side wall of the inner cavity, the inlet is formed in the tangential direction of the side wall of the inner cavity, and an external environment is communicated with the inner cavity via the inlet;
an adjusting component is arranged at one end of the through hole, and the other end of the through hole is communicated with the outlet of the inner cavity;
the adjusting component comprises a sliding part, wherein the sliding part is located in the through hole, the sliding part forms a sliding seal with the hole wall of the through hole, and the sliding part can slide in the axial direction of the through hole, wherein one end of the sliding part leads to the inner cavity, and the other end of the sliding part is communicated with the external environment; and the pressure that a fluid entering the inner cavity from the inlet imposes on one end of the sliding part changes with the properties of the fluid, so that the sliding part slides up and down in the axial direction of the through hole to adjust the flow of the fluid entering the inner cavity.
For specific implementation of the fluid control device, reference can be made to the implementation in the former embodiment, and the details are not described here again.
Further, as shown in Fig. 11, a plurality of fluid control devices 20 can be provided, and the plurality of fluid control devices 20 can be uniformly surrounded on the periphery of the base tube 10 in the radial direction. For example, Fig. 11 shows the condition when three fluid control devices 20 are provided.
Further, as shown in Fig. 12, the fluid control system further comprises a filter screen 30, wherein the filter screen 30 surrounds the base tube 10. An annular hollow cavity 40 is formed between the filter screen 30 and the base tube 10.
External fluid enters the fluid control device 20 after entering the annular hollow cavity 40 via the filter screen 30.
In the technical solutions proposed in the present invention, the inlet is formed in the side wall of the inner cavity, the inlet is formed in the tangential direction of the side wall of the inner cavity, and when the velocity of the fluid flowing into the inner cavity from the inlet is very high, the fluid enters the inner cavity in the tangential direction and forms vortexes under the action of the side wall of the inner cavity. The inner cavity is communicated with the through hole, the adjusting component is arranged at one end of the through hole, and the other end of the through hole is communicated with the outlet. The sliding part of the adjusting component is arranged in the through hole and forms a seal with the through hole, and the sliding part can slide in the axial direction of the through hole. Since one end of the sliding part leads to the inner cavity, the sliding part may cause a volume change of the inner cavity when sliding. When the flow velocity of the fluid is higher, a large amount of fluid enters the inner cavity to form vortexes. Since the pressure at a vortex center is reduced, the fluid pressure at the outlet near the position of the vortex center is reduced accordingly; therefore the sliding part slides towards the direction of the inner cavity because of the coaction of a negative pressure of the fluid and an external environment pressure, which reduces the volume of the inner cavity, and the flow of the fluid flowing into the inner cavity is reduced, and thus a certain throttling effect is fulfilled. Therefore, the fluid control device provided in the present invention can automatically adjust the fluid velocity according to the property change of the fluid that enters the inner cavity from the inlet, so as to adjust the flow of the fluid.
While the present invention has been particularly shown and described with reference to the preferred embodiments thereof, it is to be understood that the foregoing description does not limit the present invention in any form.
According to the technical essence of the present invention, it is contemplated that various alterations, equivalent changes and modifications can be made to the foregoing embodiments of the present invention without departing from the spirit and scope of the present invention.
Specifically, for example, in a segmented oil production operation of a horizontal well, the fluid control device provided in the present invention can be used for throttling an oil production segment with a large water content to reduce the oil production yield; while for an oil production segment with a small water content, the yield can be appropriately increased to achieve a balanced operation of an oil production rate.
In the technical solutions proposed in the present invention, the inlet is formed in the side wall of the inner cavity, the inlet is formed in the tangential direction of the side wall of the inner cavity, and when the velocity of a fluid flowing into the inner cavity from the inlet is very high, the fluid enters the inner cavity in the tangential direction and forms vortexes under the action of the side wall of the inner cavity. The inner cavity is communicated with the through hole, the adjusting component is arranged at one end of the through hole, and the other end of the through hole is communicated with the outlet. The sliding part of the adjusting component is arranged in the through hole and forms a seal with the through hole, and the sliding part can slide in the axial direction of the through hole. Since one end of the sliding part leads to the inner cavity, the sliding part may cause a volume change of the inner cavity when sliding. When the flow velocity of the fluid is higher, a large amount of fluid enters the inner cavity to form vortexes. Since the pressure at a vortex center is reduced, the fluid pressure at the outlet near the position of the vortex center is reduced accordingly; therefore the sliding part slides towards the direction of the inner cavity because of the coaction of a negative pressure of the fluid and an external environment pressure, which reduces the volume of the inner cavity, and the flow of the fluid flowing into the inner cavity is reduced, and thus a certain throttling effect is fulfilled. Therefore, the fluid control device provided in the present invention can automatically adjust the fluid velocity according to the property change of the fluid that enters the inner cavity from the inlet, so as to adjust the flow of the fluid.
Further, as shown in Fig. 1 and Fig. 2, the adjusting component 400 may further comprise a fixed part 420, wherein the fixed part 420 is fixed to the body 100 and is used for limiting the sliding displacement of the sliding part 410.
Further, as shown in Fig. 3 and Fig. 4, the body 100 may comprise a first part and a second part 120. The first surface 111 is arranged on the first part 110, and the first part 110 further comprises a third surface 112 opposite to the first surface 111.
The second surface 121 is arranged on the second part 120, and the second part further comprises a fourth surface 122 opposite to the second surface 121. The through hole 300 comprises a first through hole 310 formed in the first part 110 and a second through hole 320 formed in the second part 120, wherein the first through hole 310 passes through the first surface 111 and the third surface 112, the second through hole 320 passes through the second surface 121 and the fourth surface 122, and the first through hole 310 is communicated with the second through hole 320. The first part 110 is fixedly connected with the second part 120. The third surface 112 and the fourth surface 122 are arranged oppositely, and the adjusting component 400 is arranged at the end of the first through hole 310.
When the body 100 comprises the first part 110 and the second part 120, the inner cavity 200 can be fulfilled in two manners.
One manner is that, a first groove is formed in the third surface 112; or, a second groove is formed in the fourth surface 122; or, the first groove is formed in the third surface 112 and the second groove is formed in the fourth surface 122. Then, the third surface 112 and the fourth surface 122 are arranged oppositely, and the inner cavity 200 is formed by the first groove and/or the second groove after the first part 110 and the second part 120 are buckled. Both the first through hole 310 and the second through hole 320 are communicated with the inner cavity 200. Fig. 3 shows the inner cavity 200 which is formed by the second groove formed in the fourth surface 122.
The other manner is that, as shown in Fig. 4 and Fig. 5, the body 100 may further comprise a swirl body 130, wherein the swirl body 130 is arranged between the first part 110 and the second part 120, the swirl body 130 comprises a bottom surface 131 and a top surface 132, the bottom surface 131 is integrated closely with the fourth surface 122, the top surface 132 is integrated closely with the third surface 112, the inner cavity 200 is arranged in the swirl body 130, the top surface 132 is provided with an opening 133, and the opening 133 is communicated with the first through hole 310 and the inner cavity 200. The inlet 230 is formed in the side wall of the swirl body 130, and the outlet 240 communicated with the inner cavity 200 is formed in the bottom surface. A gap is located between the parts of the third surface 112 and the fourth surface 122 beyond the swirl body 130, the gap is communicated with the inlet 230, and the outlet 240 is communicated with the second through hole 320.
The working principle of the swirl body 130 is as follows: for low-viscosity fluid, such as water and the like, since the density thereof is large, the viscous force is small, and the inertial force is large, the tangential velocity at the inlet is large, the vortex intensity is larger, and the pressure loss is large as well. Meanwhile, a flowing path of rotating water is long, and the frictional resistance is enlarged along the path.
For high-viscosity fluid, such as oil and the like, since the density thereof is small, the viscous force is large, and the inertial force is small, when entering from the inlet, the fluid preferably enters the outlet in the radial direction, so that the tangential velocity is low, and vortex is unlikely to form.
It should be noted that, the two implementations are merely illustrations, but it does not represent that only the two implementations are available.
Further, as shown in Fig. 2 to Fig. 4, the adjusting component 400 may further comprise a sealing element 430, wherein the sealing element 430 is used for sealing a gap between the sliding part 410 and the first through hole 310. When the sliding part 410 forms a seal with the first through hole 310, the slide of the sliding part 410 can cause a pressure change of the inner cavity 200, so as to adjust the flow of the fluid entering the inner cavity 200.
Further, as shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 6, the sealing element 430 can be a trumpet-shaped elastic sealing ring, one end of the sealing element 430 is butted against the sliding part 410, and the other end of the sealing element 430 is butted against the body 100. When the sliding part 410 is sliding towards the direction of the inner cavity 200, the sealing element 430 is compressed, and when the sliding part 410 is sliding towards the direction away from the inner cavity 200, the sealing element 430 is recovered gradually. No matter the sliding part 410 slides towards the direction close to the inner cavity 200 or slides towards the direction away from the inner cavity 200, the elastic sealing ring can consistently come into close contact with the sliding part 410 under elasticity.
Further, as shown in Fig. 2 to Fig. 4, the longitudinal section of the sliding part 410 can be T-shaped, the small end of the trumpet-shaped elastic sealing ring is butted against the lower end of a cross arm of the T-shaped sliding part 410, and the large end of the trumpet-shaped elastic sealing ring is butted against the body 100.
Further, as shown in Fig. 7 and Fig. 8, the fixed part 420 is provided with external threads, the inner wall of the first through hole 310 is provided with internal threads, and the fixed part 420 is fixedly connected with the first through hole 310 via the cooperation between the external threads and the internal threads. The fixed part 420 is provided with a first stepped hole 421 and a second stepped hole 422 which are communicated with each other, wherein the first stepped hole 421 and the second stepped hole 422 are coaxial with the first through hole 310, the diameter of the first stepped hole 421 is smaller than that of the second stepped hole 422, and a first stepped surface 423 is formed between the first stepped hole 421 and the second stepped hole 422.
As shown in Fig. 7 and Fig. 8, the cross arm of the sliding part 410 is located in the second stepped hole 422, the sliding part 410 can slide in the second stepped hole 422, and the first stepped surface 423 limits the sliding part 410 to slide out from the second stepped hole 422. The sliding part 410 is communicated with the external environment via the first stepped hole 421.
Further, as shown in Fig. 7 and Fig. 9, the first through hole 310 may comprise a third stepped hole 311 and a fourth stepped hole 312 which are communicated with each other, the diameter of the third stepped hole 311 is greater than that of the fourth stepped hole 312, and a second stepped surface 313 is formed between the third stepped hole 311 and the fourth stepped hole 312. The fixed part 420 is arranged in the third stepped hole 311, and the fixed part 420 is in threaded connection with the third stepped hole 311. The vertical part of the T-shaped sliding part is embedded in the fourth stepped hole, and the second stepped surface 313 limits the T-shaped cross arm to slide out from the second stepped hole 422. The large end of the trumpet-shaped elastic sealing ring is embedded in a groove of the second stepped surface 313, and the large end of the trumpet-shaped elastic sealing ring is fixed between the fixed part 420 and the first part 110.
Further, as shown in Fig. 4, the second part 120 can be provided with a groove 125, and a part of or all of the swirl body 130 is embedded in the groove 125 to better fix the swirl body 130.
Further, as shown in Fig. 4, a bulge 134 is arranged along the bottom surface 131 of the swirl body 130 towards the outside of the inner cavity 200, the bulge 134 stretches into the second through hole 320 to further fix the swirl body 130, and the outlet 240 is formed in the bulge 134.
Further, as shown in Fig. 5, two inlets 230 can be formed, and when the fluid enters in the tangential direction of the cambered surface of the inner wall of the inner cavity 200, the directions of the two inlets 230 are consistent. For example, both the directions are clockwise directions or counterclockwise directions.
Further, as shown in Fig. 5, each inlet 230 is provided with two forks, and the two forks divide the fluid into two paths to promote the formation of vortexes.
Further, the material of the swirl body 130 can be cemented carbide. The cemented carbide is an alloy material which is made of a hard compound of a refractory metal and a binding metal via powder metallurgy technology. The cemented carbide has a series of excellent properties, such as high hardness, wearing resistance, better strength and toughness, heat resistance, corrosion resistance, etc. Therefore, when being used as the swirl body, the cemented carbide can be adapted to harsh environments of underground oil production operation, and can not only guarantee the working quality, but also can prolong the service life of the swirl body at the same time.
Further, the sliding part 410 bears the impact force of the fluid for a long time, the outline is simple and easy to process, and both the cemented carbide and ceramic have the characteristic of high hardness, therefore, the material of the sliding part 410 can be the cemented carbide or the ceramic. Of course, the material of the sliding part 410 is not limited herein.
As shown in Fig. 10, a fluid control system proposed in another embodiment of the present invention comprises a base tube 10 and at least one fluid control device 20.
The base tube 10 is provided with an internal channel 11, and a liquid inlet 12 is formed in the side wall of the base tube 10. The at least one fluid control device 20 is arranged on the base tube 10 in the radial direction, and the outlet 21 of the fluid control device 20 is communicated with the liquid inlet 12. The base tube 10 and the fluid control device 20 can be fixed with each other in the threaded connection manner as shown in Fig. 10 and can also be fixed with each other by welding.
Of course, the base tube and the fluid control device can also be fixed in other manners, which are not specifically limited herein.
The fluid control device comprises:
a body, wherein the body has an inner cavity, and the side wall of the inner cavity is a cambered surface; wherein:
the body comprises a first surface and a second surface which are opposite, and a through hole passing through the first surface and the second surface sequentially penetrates through the first surface, a top surface of the inner cavity, a bottom surface of the inner cavity and the second surface;
an inlet is formed in the side wall of the inner cavity, the inlet is formed in the tangential direction of the side wall of the inner cavity, and an external environment is communicated with the inner cavity via the inlet;
an adjusting component is arranged at one end of the through hole, and the other end of the through hole is communicated with the outlet of the inner cavity;
the adjusting component comprises a sliding part, wherein the sliding part is located in the through hole, the sliding part forms a sliding seal with the hole wall of the through hole, and the sliding part can slide in the axial direction of the through hole, wherein one end of the sliding part leads to the inner cavity, and the other end of the sliding part is communicated with the external environment; and the pressure that a fluid entering the inner cavity from the inlet imposes on one end of the sliding part changes with the properties of the fluid, so that the sliding part slides up and down in the axial direction of the through hole to adjust the flow of the fluid entering the inner cavity.
For specific implementation of the fluid control device, reference can be made to the implementation in the former embodiment, and the details are not described here again.
Further, as shown in Fig. 11, a plurality of fluid control devices 20 can be provided, and the plurality of fluid control devices 20 can be uniformly surrounded on the periphery of the base tube 10 in the radial direction. For example, Fig. 11 shows the condition when three fluid control devices 20 are provided.
Further, as shown in Fig. 12, the fluid control system further comprises a filter screen 30, wherein the filter screen 30 surrounds the base tube 10. An annular hollow cavity 40 is formed between the filter screen 30 and the base tube 10.
External fluid enters the fluid control device 20 after entering the annular hollow cavity 40 via the filter screen 30.
In the technical solutions proposed in the present invention, the inlet is formed in the side wall of the inner cavity, the inlet is formed in the tangential direction of the side wall of the inner cavity, and when the velocity of the fluid flowing into the inner cavity from the inlet is very high, the fluid enters the inner cavity in the tangential direction and forms vortexes under the action of the side wall of the inner cavity. The inner cavity is communicated with the through hole, the adjusting component is arranged at one end of the through hole, and the other end of the through hole is communicated with the outlet. The sliding part of the adjusting component is arranged in the through hole and forms a seal with the through hole, and the sliding part can slide in the axial direction of the through hole. Since one end of the sliding part leads to the inner cavity, the sliding part may cause a volume change of the inner cavity when sliding. When the flow velocity of the fluid is higher, a large amount of fluid enters the inner cavity to form vortexes. Since the pressure at a vortex center is reduced, the fluid pressure at the outlet near the position of the vortex center is reduced accordingly; therefore the sliding part slides towards the direction of the inner cavity because of the coaction of a negative pressure of the fluid and an external environment pressure, which reduces the volume of the inner cavity, and the flow of the fluid flowing into the inner cavity is reduced, and thus a certain throttling effect is fulfilled. Therefore, the fluid control device provided in the present invention can automatically adjust the fluid velocity according to the property change of the fluid that enters the inner cavity from the inlet, so as to adjust the flow of the fluid.
While the present invention has been particularly shown and described with reference to the preferred embodiments thereof, it is to be understood that the foregoing description does not limit the present invention in any form.
According to the technical essence of the present invention, it is contemplated that various alterations, equivalent changes and modifications can be made to the foregoing embodiments of the present invention without departing from the spirit and scope of the present invention.
Claims (18)
1. A fluid control device, comprising:
a body comprising:
a first part comprising a first surface and a third surface which are opposite;
a second part comprising a second surface and a fourth surface which are opposite;
a through hole comprising a first through hole arranged in the first part and a second through hole arranged in the second part, wherein the first through hole passes through the first surface and the third surface, the second through hole passes through the second surface and the fourth surface, and the first through hole is communicated with the second through hole;
a swirl body arranged between the first part and the second part, wherein the swirl body comprises a bottom surface and a top surface, the bottom surface is integrated closely with the fourth surface, the top surface is integrated closely with the third surface, an inner cavity is arranged in the swirl body, the top surface is provided with an opening, and the opening is communicated with the first through hole and the inner cavity, an inlet is formed in a side wall of the swirl body, and an outlet communicated with the inner cavity is formed in the bottom surface, a gap is located between parts of the third surface and the fourth surface beyond the swirl body, the gap is communicated with the inlet, and the outlet is communicated with the second through hole; and an adjusting component arranged at one end of the first through hole, wherein:
the adjusting component comprises a sliding part, wherein the sliding part is located in the through hole, the sliding part forms a sliding seal with a hole wall of the through hole, and the sliding part can slide in an axial direction of the through hole, wherein one end of the sliding part leads to the inner cavity, and the other end of the sliding part is communicated with the external environment; and the pressure that a fluid entering the inner cavity from the inlet imposes on one end of the sliding part changes with the properties of the fluid, so that the sliding part slides up and down in the axial direction of the through hole to adjust the flow of the fluid entering the inner cavity.
a body comprising:
a first part comprising a first surface and a third surface which are opposite;
a second part comprising a second surface and a fourth surface which are opposite;
a through hole comprising a first through hole arranged in the first part and a second through hole arranged in the second part, wherein the first through hole passes through the first surface and the third surface, the second through hole passes through the second surface and the fourth surface, and the first through hole is communicated with the second through hole;
a swirl body arranged between the first part and the second part, wherein the swirl body comprises a bottom surface and a top surface, the bottom surface is integrated closely with the fourth surface, the top surface is integrated closely with the third surface, an inner cavity is arranged in the swirl body, the top surface is provided with an opening, and the opening is communicated with the first through hole and the inner cavity, an inlet is formed in a side wall of the swirl body, and an outlet communicated with the inner cavity is formed in the bottom surface, a gap is located between parts of the third surface and the fourth surface beyond the swirl body, the gap is communicated with the inlet, and the outlet is communicated with the second through hole; and an adjusting component arranged at one end of the first through hole, wherein:
the adjusting component comprises a sliding part, wherein the sliding part is located in the through hole, the sliding part forms a sliding seal with a hole wall of the through hole, and the sliding part can slide in an axial direction of the through hole, wherein one end of the sliding part leads to the inner cavity, and the other end of the sliding part is communicated with the external environment; and the pressure that a fluid entering the inner cavity from the inlet imposes on one end of the sliding part changes with the properties of the fluid, so that the sliding part slides up and down in the axial direction of the through hole to adjust the flow of the fluid entering the inner cavity.
2. The fluid control device according to claim 1, characterized in that the adjustment component further comprises:
a sealing element, wherein the sealing element is used for sealing a gap between the sliding part and the first through hole.
a sealing element, wherein the sealing element is used for sealing a gap between the sliding part and the first through hole.
3, The fluid control device according to claim 2, characterized in that, the sealing element is a trumpet-shaped elastic sealing ring, one end of the sealing element is butted against the sliding part, and the other end of the sealing element is butted against the body; and when the sliding part is sliding towards the direction of the inner cavity, the sealing element is compressed, and when the sliding part slides towards the direction away from the inner cavity, the sealing element is recovered gradually.
4. The fluid control device according to claim 3, characterized in that, the longitudinal section of the sliding part is T-shaped, the small end of the trumpet-shaped elastic sealing ring is butted against the lower end of a cross arm of the T-shaped sliding part, and the large end of the trumpet-shaped elastic sealing ring is butted against the body.
5. The fluid control device according to claim 4, characterized in that the adjusting component further comprises:
a fixed part, wherein the fixed part is fixed to the body and is used for limiting the sliding displacement of the sliding part.
a fixed part, wherein the fixed part is fixed to the body and is used for limiting the sliding displacement of the sliding part.
6. The fluid control device according to claim 1, characterized in that, a first groove is formed in the third surface; and a second groove is formed in the fourth surface; wherein the third surface and the fourth surface are arranged oppositely, and the first groove and the second groove are buckled at the first part and the second part; and both the first through hole and the second through hole are communicated with the inner cavity.
7. The fluid control device according to claim 1, characterized in that, a first groove is formed in the third surface; or a second groove is formed in the fourth surface; wherein the third surface and the fourth surface are arranged oppositely, and the first groove or the second groove is buckled at the first part and the second part; and both the first through hole and the second through hole are communicated with the inner cavity.
8. The fluid control device according to claim 5, characterized in that, the fixed part is provided with external threads, the inner wall of the first through hole is provided with internal threads, and the fixed part is fixedly connected with the first through hole via the cooperation between the external threads and the internal threads;
the fixed part is provided with a first stepped hole and a second stepped hole which are communicated with each other, wherein the first stepped hole and the second stepped hole are coaxial with the first through hole, the diameter of the first stepped hole is smaller than that of the second stepped hole, and a first stepped surface is formed between the first stepped hole and the second stepped hole;
the cross arm of the sliding part is located in the second stepped hole, the sliding part can slide in the second stepped hole, and the first stepped surface limits the sliding part to slide out from the second stepped hole; and the sliding part is communicated with the external environment via the first stepped hole.
the fixed part is provided with a first stepped hole and a second stepped hole which are communicated with each other, wherein the first stepped hole and the second stepped hole are coaxial with the first through hole, the diameter of the first stepped hole is smaller than that of the second stepped hole, and a first stepped surface is formed between the first stepped hole and the second stepped hole;
the cross arm of the sliding part is located in the second stepped hole, the sliding part can slide in the second stepped hole, and the first stepped surface limits the sliding part to slide out from the second stepped hole; and the sliding part is communicated with the external environment via the first stepped hole.
9. The fluid control device according to claim 8, characterized in that, the first through hole comprises a third stepped hole and a fourth stepped hole which arc communicated with each other, wherein the diameter of the third stepped hole is greater than that of the fourth stepped hole, and a second stepped surface is formed between the third stepped hole and the fourth stepped hole; wherein:
the fixed part is arranged in the third stepped hole, and the fixed part is in threaded connection with the third stepped hole;
the vertical part of the T-shaped sliding part is embedded in the fourth stepped hole, and the second stepped surface limits the T-shaped cross arm to slide out from the second stepped hole; and the large end of the trumpet-shaped elastic scaling ring is embedded in a groove of the second stepped surface, and the large end of the trumpet-shaped elastic sealing ring is fixed between the fixed part and the first part.
the fixed part is arranged in the third stepped hole, and the fixed part is in threaded connection with the third stepped hole;
the vertical part of the T-shaped sliding part is embedded in the fourth stepped hole, and the second stepped surface limits the T-shaped cross arm to slide out from the second stepped hole; and the large end of the trumpet-shaped elastic scaling ring is embedded in a groove of the second stepped surface, and the large end of the trumpet-shaped elastic sealing ring is fixed between the fixed part and the first part.
10. The fluid control device according to claim 1, characterized in that, the second part is provided with a groove, and a part or all of the swirl body is embedded in the groove.
11. The fluid control device according to claim 1, characterized in that, a bulge is arranged on the bottom surface of the swirl body towards the outside of the inner cavity, the bulge stretches into the second through hole, and the outlet is formed in the bulge.
12. The fluid control device according to claim 1, characterized in that, two inlets are formed, the fluid enters in the tangential direction of the cambered surface of the inner cavity, and the directions of the two inlets are consistent.
13. The fluid control device according to claim 12, characterized in that, each inlet is provided with two forks, and the two forks divide the fluid into two paths.
14. The fluid control device according to claim 1, characterized in that, the material of the swirl body is cemented carbide.
15. The fluid control device according to claim 1, characterized in that, the material of the sliding part is cemented carbide or ceramic.
16. A fluid control system, comprising:
a base. tube, wherein the base tube is provided with an internal channel, and a liquid inlet is formed in the side wall of the base tube; and at least one fluid control device according to any one of claims 1 to 15, wherein the at least one fluid control device is arranged on the base tube in the radial direction, and the outlet of the fluid control device is communicated with the liquid inlet.
a base. tube, wherein the base tube is provided with an internal channel, and a liquid inlet is formed in the side wall of the base tube; and at least one fluid control device according to any one of claims 1 to 15, wherein the at least one fluid control device is arranged on the base tube in the radial direction, and the outlet of the fluid control device is communicated with the liquid inlet.
17. The fluid control system according to claim 16, characterized in that, a plurality of fluid control devices are provided, and the plurality of fluid control devices are uniformly surrounded on the periphery of the base tube in the radial direction.
18. The fluid control system according to claim 17, further comprising:
a filter screen surrounding the base tube; wherein an annular hollow cavity is formed between the filter screen and the base tube, and external fluid enters the fluid control device after entering the annular hollow cavity via the filter screen.
a filter screen surrounding the base tube; wherein an annular hollow cavity is formed between the filter screen and the base tube, and external fluid enters the fluid control device after entering the annular hollow cavity via the filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2911725A CA2911725C (en) | 2015-11-10 | 2015-11-10 | Fluid control device and fluid control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2911725A CA2911725C (en) | 2015-11-10 | 2015-11-10 | Fluid control device and fluid control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2911725A1 CA2911725A1 (en) | 2017-05-10 |
| CA2911725C true CA2911725C (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2911725A Active CA2911725C (en) | 2015-11-10 | 2015-11-10 | Fluid control device and fluid control system |
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| CA (1) | CA2911725C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678714A (en) * | 2018-06-28 | 2018-10-19 | 安东石油技术（集团）有限公司 | Water-control oil-increasing device, screen casing and tubing string |
| CN115074150B (en) * | 2022-07-19 | 2024-04-02 | 常州大学 | Heavy oil viscosity reduction strengthening device capable of continuously adjusting flow based on jet cavitation |
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