CN115788392B - Pulse oscillation rotational flow resistance-increasing type water-control oil-stabilizing device - Google Patents
Pulse oscillation rotational flow resistance-increasing type water-control oil-stabilizing device Download PDFInfo
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- CN115788392B CN115788392B CN202310075911.XA CN202310075911A CN115788392B CN 115788392 B CN115788392 B CN 115788392B CN 202310075911 A CN202310075911 A CN 202310075911A CN 115788392 B CN115788392 B CN 115788392B
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Abstract
The invention discloses a pulse oscillation rotational flow resistance-increasing type water and oil control device, which comprises an internal working barrel, an external protection barrel, a pulse oscillation type water control device and a one-way throttle valve, wherein the internal working barrel is connected in the external protection barrel through threads, an oil-water flowing channel is reserved between a lower end flange of the internal working barrel and the inner wall of the external protection barrel, the one-way throttle valve is arranged between the internal working barrel and the external protection barrel, and the side wall of the internal working barrel is provided with the pulse oscillation type water control device; the pulse oscillation type water control device comprises a shell, an outlet is formed in the center of the bottom of the shell, an inlet is formed in the side wall of the shell and is communicated with a main runner, the main runner is a runner with a rectangular cross section and gradually reduces along the path of the oil-water flowing direction and sequentially branches into a special-shaped pressurizing branch runner, a speed-increasing branch runner and three Helmholtz oscillation cavity runners. Solves the problems that the prior water control and water resistance are insufficient, the recovery ratio cannot be effectively improved when bottom water is coning, sand is easy to accumulate in a flow passage, and the like.
Description
Technical Field
The invention relates to the technical field of oil extraction engineering, in particular to a pulse oscillation rotational flow resistance-increasing type water-controlling and oil-stabilizing device.
Background
Compared with a vertical well, the horizontal well has the advantages of large oil drainage area, small production pressure difference, effective improvement of recovery ratio and the like, and is widely adopted. However, for bottom water reservoirs, bottom water coning can lead to premature water breakthrough in the horizontal well section, thereby reducing oil production and, in severe cases, causing shut-in and shut-down. In the middle and later periods of production, the yield is increased by using modes such as hydraulic fracturing and the like, the oil production channel of the oil pipe generally adopts a two-way communication mode at present, and the oil production channel can generate pressure relief when the oil pipe is pressurized underground, so that the hydraulic fracturing can not be developed. In order to ensure that the horizontal well can be stably produced for a long time, the key for solving the problem is how to effectively prevent water and control water and conveniently cooperate with other yield-increasing processes for production.
The common rotational flow type water control device in the market at present can control water and stabilize oil according to different properties (density and viscosity) of oil and water, but due to structural limitation, water is pressurized and accelerated only by a rotational flow chamber near an outlet, the provided resistance is limited, and the water control effect is not obvious, for example, an intelligent flow adjusting and water control device provided in patent CN113323625A, wherein a rotary flow selecting part can well reduce the oil-water pressure difference ratio, so that the better water control effect is realized, but more moving and rotating parts are arranged in the device, so that for heavy oil and high-sand-content oil reservoirs, the faults such as clamping stagnation and the like easily occur between a part motion pair due to blockage and abrasion, and once the whole device is clamped, the effect is lost; in addition, the oil recovery passageway overall arrangement between the inside working barrel of this patent and the parent tube is two-way intercommunication, and this when need carry out mode increases such as hydraulic fracturing to the production later stage, can produce the pressure release at the oil recovery passageway, leads to unable hydraulic fracturing of developing.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a pulse oscillation rotational flow resistance-increasing type water-controlling and oil-stabilizing device, and solves the problems that the water-controlling and water-blocking capabilities of the water-controlling device are insufficient, the recovery ratio cannot be effectively improved when bottom water is coning, sand is easy to accumulate in a flow channel, and the like.
The purpose of the invention is realized by the following technical scheme: a pulse oscillation rotational flow resistance-increasing type water and oil control device comprises an inner working barrel, an outer protection barrel, a pulse oscillation type water control device and a one-way throttle valve, wherein the inner working barrel is connected into the outer protection barrel through threads, a channel through which oil and water flow is reserved between a lower end flange of the inner working barrel and the inner wall of the outer protection barrel, the one-way throttle valve is installed between the inner working barrel and the outer protection barrel, the oil and water flow into the one-way throttle valve through the channel, the pulse oscillation type water control device is arranged on the side wall of the inner working barrel, the pulse oscillation type water control device is located above the one-way throttle valve, and the oil and water in the one-way throttle valve flow into the pulse oscillation type water control device through a flow gap;
pulse oscillation formula accuse water installation includes the casing, the bottom central point of casing puts and is provided with the export, the export intercommunication the inner chamber of inner work section of thick bamboo, two imports have been seted up to the lateral wall of casing, two the import about the export is central symmetry and sets up, two sprue, two have been seted up in the casing the sprue communicates two respectively the import, the sprue is the rectangular cross section runner, reduces gradually and shunts into three runners of dysmorphism pressure boost runner, acceleration rate runner and helmholtz oscillation chamber runner along profit flow direction route.
The adoption of the technical scheme has the effects that a Helmholtz oscillation cavity type runner and a special-shaped pressurizing branch runner are adopted to replace a common runner, and pulse oscillation and vortex are generated by water to generate extra energy loss, so that larger pressure reduction resistance is formed; the tangential flow channel which is in accordance with the flowing characteristic of water is used for replacing a straight flow channel, the flowing energy loss of water is reduced so as to obtain higher flowing speed, the water is enabled to be subjected to rotational flow pressurization in a pressurization cavity at higher speed, the device has the characteristics of stable structure, long service life and difficulty in sand accumulation of the flow channel, the pressurization and resistance increasing capability of water can be greatly improved, and the recovery efficiency improving effect is obvious when bottom water is subjected to coning.
In some embodiments, the inlet and the outlet of the helmholtz oscillation cavity flow channel are respectively a square-to-round channel with a gradually reduced diameter and a round-to-square channel with a gradually enlarged diameter, a special-shaped resonance cavity is arranged in the middle of the helmholtz oscillation cavity flow channel, and the opening direction of the special-shaped resonance cavity is the same as the fluid flowing direction.
In some embodiments, the special-shaped resonant cavity is in an inner and outer double-truncated cone shape, the opening direction of the truncated cone of the special-shaped resonant cavity is along the flow direction of oil and water, and the inner diameters of the flow channels in front of and behind the special-shaped resonant cavity are one tenth to one half of the inner diameter of the special-shaped resonant cavity.
In some embodiments, the inlet direction of the special-shaped pressurizing branch flow channel is perpendicular to the main flow channel, the special-shaped pressurizing branch flow channel is separated into a straight flow channel forming a certain angle with the inlet direction and another bent flow channel forming a certain angle with the straight flow channel, and the straight flow channel and the bent flow channel are separated at the inlet and converged near the outlet.
In some embodiments, the speed-increasing branch flow channel and the main flow channel are staggered at a certain angle and tangentially communicated with an annular speed-increasing flow channel, the annular speed-increasing flow channel is two symmetrical and separated semicircular flow channels, and the widths of an inlet and an outlet of each semicircular flow channel are greater than the width of the middle flow channel, so that the semicircular flow channel is integrally in a structure of being wide at two ends and narrow in the middle.
In some embodiments, a pressurizing chamber is further disposed in the housing, the helmholtz oscillation cavity flow channel, the annular speed-increasing flow channel and the pressurizing chamber are sequentially disposed from inside to outside, the pressurizing chamber is a circular region, a pair of mutually staggered semicircular inner walls is arranged in the circumferential direction, and an inflow port formed by the inner walls is tangential to an outflow port of the annular speed-increasing flow channel.
In some embodiments, the one-way throttle valve includes a valve body, an axial positioning sleeve and a sealing ball, the valve body is fixedly disposed on the inner working barrel, a through hole is disposed at one end of the valve body, a sealing groove is disposed at the other end of the valve body, the end portion of the sealing groove is provided with the axial positioning sleeve, the axial positioning sleeve is connected with the valve body through a thread, the sealing groove is communicated with the through hole through a taper hole, the small-diameter end of the taper hole is connected with the through hole, the sealing ball is slidably disposed in the sealing groove, a plurality of side sealing grooves are disposed on the side wall of the valve body, the side sealing grooves are uniformly distributed in the circumferential direction of the valve body, a spherical sealing ring is disposed in the side sealing groove, and the spherical sealing ring is mounted on the valve body through a sealing ring.
In some embodiments, the inner cylinder is fixedly sleeved with intermediate flanges along the axial direction thereof, the front and rear end faces of the valve body are respectively matched with the two intermediate flanges, and the intermediate flange at the upper end is provided with a through hole communicated with the sealing groove.
In some embodiments, the base pipe further comprises a base pipe, and the end part of the base pipe is connected with the lower end part of the inner working barrel through conical surface threads.
In some embodiments, the pulsed oscillation type water control device further comprises a cover plate, and the shell and the cover plate are welded by using precision argon arc welding and vacuum brazing.
The invention has the beneficial effects that:
1. the Helmholtz oscillation cavity type runner and the special-shaped pressurizing branch runner are adopted to replace a common runner, and water is used for generating pulse oscillation and vortex to generate extra energy loss, so that larger pressure reduction resistance is formed; the tangential flow channel which is in accordance with the flowing characteristic of water is used for replacing a straight flow channel, the flowing energy loss of water is reduced so as to obtain higher flowing speed, the water is enabled to be subjected to rotational flow pressurization in a pressurization cavity at higher speed, the device has the characteristics of stable structure, long service life and difficulty in sand accumulation of the flow channel, the pressurization and resistance increasing capability of water can be greatly improved, and the recovery efficiency improving effect is obvious when bottom water is subjected to coning.
2. When hydraulic fracturing is needed to improve yield, the one-way throttle valve can close the valve when high-pressure fluid is injected into the shaft, so that pressure leakage is prevented; in the ordinary exploitation process, the valve is kept open, and the smoothness of an oil extraction channel is ensured.
Drawings
FIG. 1 is a schematic general view of a pulse oscillation pressurization and resistance-increasing type water-control and oil-stabilization device of the present invention;
FIG. 2 is a structural diagram of a pulse oscillation type water control device in the pulse oscillation pressurization resistance-increasing type water and oil control device of the present invention;
FIG. 3 is a cross-sectional view of a pulse oscillation type water control device in a pulse oscillation pressurization resistance-increasing type water control and oil stabilization device of the present invention;
FIG. 4 is a water control schematic diagram of a pulse oscillation type water control device in the pulse oscillation pressure-increasing resistance-increasing type water control and oil stabilization device of the present invention;
FIG. 5 is a schematic diagram of a prior art flow channel AICD;
FIG. 6 is a cross-sectional view of the inside of a one-way throttle valve of a pulse oscillation pressure-increasing resistance-increasing water-controlling and oil-stabilizing device of the present invention;
FIG. 7 is a comparison graph of pressure drop at different flow rates for a pulse oscillation pressure-increasing and resistance-increasing water-controlling and oil-stabilizing device of the present invention and a conventional water-controlling device;
FIG. 8 is a diagram of the water-oil pressure drop ratio of the pulse oscillation pressure-increasing and resistance-increasing water-controlling and oil-stabilizing device of the present invention and the existing water-controlling device under different flow rates;
in the figure, 1-inner working cylinder, 2-outer protection cylinder, 3-pulse oscillation type water control device, 4-one-way throttle valve, 5-base pipe, 301-shell, 302-cover plate, 303-inlet, 304-outlet, 305-main flow channel, 306-special-shaped pressurizing branch flow channel, 307-Helmholtz oscillation cavity flow channel, 308-special-shaped resonant cavity, 309-annular accelerating flow channel, 310-pressurizing cavity, 311-accelerating branch flow channel, 401-axial positioning sleeve, 402-valve body, 403-sealing ball, 404-sealing ring collar and 405-spherical sealing ring.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following descriptions.
As shown in fig. 1 to 8, a pulse oscillation rotational flow resistance-increasing type water-controlling and oil-stabilizing device comprises an inner working barrel 1, an outer protection barrel 2, a pulse oscillation type water-controlling device 3 and a one-way throttle valve 4, wherein the inner working barrel 1 is connected in the outer protection barrel 2 through threads, the upper end flange surface of the inner working barrel 1 is tightly matched with the inner wall surface of the outer protection barrel 2, a sealing ring is arranged at the front end of the matching surface for secondary sealing to ensure the sealing property between the front end surface of the inner working barrel 1 and the outer protection barrel 2, the lower end flange of the inner working barrel 1 is petal-shaped, a channel through which oil and water flows is reserved between the lower end flange of the inner working barrel 1 and the inner wall of the outer protection barrel 2, the one-way throttle valve 4 is arranged between the inner working barrel 1 and the outer protection barrel 2, oil and water flow into the one-way throttle valve 4 through the channel, the pulse oscillation type water-controlling device 3 is arranged on the side wall of the inner working barrel 1, the pulse oscillation type water-controlling device 3 is positioned above the one-way throttle valve 4, and oil and water flow into the pulse oscillation type water-controlling device 3 through a flow gap; the device is characterized by further comprising a base pipe 5, the end part of the base pipe 5 is in threaded connection with the lower end part of the inner working barrel 1 through a conical surface, the base pipe 5 is tightly welded on the inner connecting surface and the outer connecting surface through argon arc welding after being in threaded connection with the inner working barrel 1, an oil-water mixture enters the one-way throttle valve 4 from a passage between the inner working barrel 1 and the outer protection barrel 2, the pressure on the inlet side of the one-way throttle valve 4 is larger than that on the outlet side, the oil-water mixture flows into the pulse oscillation type water control device 3 through the one-way throttle valve 4, pressurization is carried out along with the flow of fluid in the pulse oscillation type water control device 3, so that the pressure on the outlet side of the one-way throttle valve 4 is larger than that on the inlet side, and the fluid pressure reversely pushes a steel ball in the one-way throttle valve 4 to be tightly attached to the conical surface in the passage at the moment, so as to prevent the internal fluid from reversely flowing out; the pulse oscillation type water control device 3 mainly plays a role in controlling water and stabilizing oil, and comprises a shell 301 and a cover plate 302, wherein the shell 301 and the cover plate 302 are welded by adopting precise argon arc welding and vacuum brazing, so that the sealing property and the strength of a connecting part are ensured; the bottom central point of casing 301 puts and is provided with export 304, export 304 communicates the inner chamber of inside working barrel 1, two import 303 have been seted up to the lateral wall of casing 301, two import 303 are central symmetry setting about export 304, two main runner 305 have been seted up in casing 301, two main runner 305 communicate two import 303 respectively, main runner 305 is the rectangular cross section runner, reduce gradually and divide into special-shaped pressure boost tributary runner 306 along the profit flow direction route in proper order, three tributary runners of acceleration rate tributary runner 311 and helmholtz oscillation chamber runner 307, wherein, special-shaped pressure boost tributary runner 306 and helmholtz oscillation chamber runner 307 mainly play and flow restriction and the effect of pressure boost to water, acceleration rate tributary runner 311 mainly plays the drainage, improve the effect of flow speed to water.
In some embodiments, as shown in fig. 2 to 5, an inlet and an outlet of the helmholtz oscillation cavity flow channel 307 are respectively a round-square channel with a gradually reduced diameter and a round-square channel with a gradually enlarged diameter, a special-shaped resonant cavity 308 is disposed in the middle of the helmholtz oscillation cavity flow channel 307, an opening direction of the special-shaped resonant cavity 308 is the same as a fluid flow direction, a small resonant cavity is further disposed on the helmholtz oscillation cavity flow channel 307, the small resonant cavity is located between the special-shaped resonant cavity 308 and an outlet of the helmholtz oscillation cavity flow channel 307, the special-shaped resonant cavity 308 is in an inner and outer double truncated cone shape, the opening directions of the circular truncated cones of the special-shaped resonant cavity 308 are along the oil-water flow direction, inner diameters of the flow channels before and after the special-shaped resonant cavity 308 are one tenth to one half of the inner diameter of the self-cavity, the flow channel structure of the helmholtz oscillation cavity flow channel 307 is in a "narrow-wide-narrow" form, when the fluid reaches the inlet of the helmholtz oscillation cavity flow channel 307, because the flow channel is narrowed, the fluid is blocked to flow at the inlet to generate initial pressure, then the fluid is accelerated to flow in the narrow channel and enters the special-shaped resonant cavity 308, because of the special structure of the special-shaped resonant cavity 308, the accelerated fluid collides and rebounds with the inner wall of the wall after entering, and the process is repeated until the pressure in the cavity is increased to a certain value, the fluid stably flows out from the next narrow channel, but the fluid subsequently flowing into the cavity can continuously keep oscillating pressurization and then flows into the small resonant cavity, the small resonant cavity has a smaller opening and a shorter length than the special-shaped resonant cavity 308, the oscillating frequency of the fluid in the cavity is higher, the pressure can be generated more quickly, the inlet direction of the special-shaped pressurizing branch flow channel 306 is vertical to the main flow channel 305, the special-shaped pressurizing branch flow channel 306 is separated into a straight flow channel which forms a certain angle with the inlet direction and another straight flow channel which forms a certain angle with the straight flow channel The straight runner and the curved runner are separated at the inlet and converged near the outlet, the runner structure of the special-shaped pressurizing branch runner 306 is that one inlet is divided into two runners and then converged into one runner, the inlet direction is vertical to the main runner 305, and then the runners are separated into a branch runner which forms an acute angle with the inlet direction and a branch runner which is extended along the inlet direction and then bent at a certain radius, and finally the branch runner is converged with the previous branch runner; the annular accelerating runner 309 is tangentially communicated with the accelerating branch runner 311 and the main runner 305 in a staggered manner at a certain angle, the annular accelerating runner 309 is two symmetrical and separated semicircular runners, the widths of an inlet and an outlet of each semicircular runner are larger than the width of the middle runner of each semicircular runner, so that the semicircular runner is integrally in a structure of being wide at two ends and narrow in the middle, the accelerating branch runner 311 is also led out from the main runner 305 and tangentially flows into the annular accelerating runner 309 at an acute angle with the main runner 305, the annular accelerating runner 309 is two symmetrically distributed semicircular runners, the two ends (namely the inlet and the outlet) of the runner are wide, the middle section is narrow, a certain pressure is generated and accelerated after the fluid flows in, the fluid directly flows into the pressurizing chamber 310 after being accelerated by the annular accelerating runner 309, the Helmholtz oscillating chamber runner 307, the annular accelerating runner 309 and the pressurizing chamber 310 are sequentially arranged from the inside and the outside, the pressurizing chamber 310 is a circular area, the circumferential direction of the pair of mutually staggered semicircular inner walls is formed by the accelerating branch runners, and the inner walls are tangential to the direction of the outlet of the annular runner 309; because the properties of oil and water are different, the viscosity of the water is low, the density of the water is high, the flow is mainly dominated by the inertia force, and the water can easily flow along the shape of a flow channel; the oil has high viscosity and low density, and the flow is mainly dominated by viscous force, so the flow direction is easy to change. Therefore, the flow paths of the oil and water flowing into the water control device 3 are different from each other. Most of the oil directly flows out from the outlet along the speed-increasing branch flow passage 311 and the special-shaped pressure-increasing branch flow passage 306, and the flow path is shortest; the water is different, the water is divided into three parts, the three parts respectively enter the Helmholtz oscillation cavity type flow channel 307 along the main flow channel 305 and are divided into the special-shaped pressurizing branch flow channel 306 and the speed-increasing branch flow channel 311 from the main flow channel, the water flows in the special-shaped pressurizing branch flow channel 306 along the tangential direction, most of the water can generate energy loss after being converged with the straight flow channel through the bent flow channel, so that pressure is formed, subsequent water is subjected to resistance action and is difficult to flow in, the water passing through the Helmholtz oscillation cavity type flow channel 307 on the same principle can also be subjected to the resistance action, and therefore the water can generate larger static pressure near inlets of the two flow channels, and the flow of the subsequent water is prevented. Therefore, most of the water flows along the speed increasing branch flow passage 311, and the flow speed of the water flowing along the speed increasing branch flow passage 311 is greatly increased by the pressure effect due to the resistance of the water flow of the other two flow passages. The accelerated water continues to pass through the annular accelerating flow channel 309 and the rotational flow accelerating action of the pressurizing chamber 310, more water is gathered and rotates in the rotational flow accelerating action, the direction of the outlet 304 is perpendicular to the rotational flow direction of the water, the high-speed flowing water is difficult to change the flow direction, therefore, the rotational flow of the water in the pressurizing chamber 310 is continuously increased, the pressure is increased, when the pressure reaches a certain value, the amount of the water flowing out of the outlet 304 and the amount of the water gathered to the pressurizing chamber 310 are kept consistent, the flow is stable, and the pressure is not increased any more. In addition, because the flow velocity of water in the oscillation type water control device is very high, and periodic speed oscillation can be formed in a flow passage 307 of a Helmholtz oscillation cavity, and sand accumulation and other phenomena are difficult to form in the device under the scouring of water, the device has the characteristics of stable structure, long service life and difficult sand accumulation in the flow passage, can greatly improve the pressurizing and resistance-increasing capacity of water, and has remarkable effect of improving the recovery efficiency when bottom water is subjected to coning.
Further, as shown in fig. 7 and 8, under the same flow rate condition, the maximum water pressure drop of the pulse oscillation type water control device 3 of the present invention is increased by 65.1%, the maximum oil pressure drop is decreased by 16.4%, and the water-oil pressure drop ratio is increased by 91.8% compared with the existing water control device, which means that the resistance of water is greatly increased, the resistance of oil is decreased, the water control effect is greatly improved, and the recovery ratio of water-containing oil reservoir is also greatly increased.
In some embodiments, as shown in fig. 6, the one-way throttle valve 4 includes a valve body 402, an axial positioning sleeve 401 and a sealing ball 403, the valve body 402 is fixedly disposed on the inner cylinder 1, one end of the valve body 402 is provided with a through hole, the other end of the valve body 402 is provided with a sealing groove, an end portion of the sealing groove is provided with the axial positioning sleeve 401, the axial positioning sleeve 401 is connected to the valve body 402 through a thread, the sealing groove is communicated with the through hole through a taper hole, a small-diameter end of the taper hole is connected to the through hole, the sealing ball 403 is slidably disposed in the sealing groove, a plurality of side sealing grooves are disposed on a sidewall of the valve body 402, the plurality of side sealing grooves are uniformly distributed around a circumferential direction of the valve body 402, a spherical sealing ring 405 is disposed in the side sealing groove, the spherical sealing ring 405 is mounted on the valve body 402 through a sealing ring collar 404, an intermediate flange is fixedly disposed on the inner cylinder 1 along an axial direction thereof, front and rear end surfaces of the valve body 402 are respectively matched with the two intermediate flanges, and the intermediate flange at an upper end is provided with a through hole communicated with the sealing groove. Oil flows into a shaft from the stratum along the direction of an arrow in FIG. 2, at the moment, because the stratum pressure is far greater than the pressure in the shaft, the ball of the sealing ball 403 is separated from the conical surface of the conical hole and is abutted against the end surface of the axial positioning sleeve 401, the oil flows through the sealing ball 403 and flows into the shaft through the through hole of the axial positioning sleeve 401, and the one-way throttle valve 4 is in an open state; once hydraulic fracturing is needed to be carried out to improve the yield, high-pressure fluid is injected into the shaft, the pressure in the shaft is far greater than the pressure of the stratum, the sealing ball 403 is tightly attached to the conical surface of the channel under the action of pressure, the channel is completely sealed, the throttle valve is in a closed state, and the high-pressure fluid cannot be decompressed and is smoothly pressed into the stratum.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "two ends", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention; and those skilled in the art will appreciate that the benefits to be achieved by the present invention are only better than those achieved by current embodiments of the prior art under certain circumstances, rather than the best use directly in the industry.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A pulse oscillation rotational flow resistance-increasing type water and oil control device is characterized by comprising an inner working barrel (1), an outer protection barrel (2), a pulse oscillation type water control device (3) and a one-way throttle valve (4), wherein the inner working barrel (1) is connected in the outer protection barrel (2) through threads, a channel through which oil and water flow is reserved between a lower end flange of the inner working barrel (1) and the inner wall of the outer protection barrel (2), the one-way throttle valve (4) is installed between the inner working barrel (1) and the outer protection barrel (2), the oil and water flow into the one-way throttle valve (4) through the channel, the pulse oscillation type water control device (3) is arranged on the side wall of the inner working barrel (1), the pulse oscillation type water control device (3) is located above the one-way throttle valve (4), and the oil and water in the one-way throttle valve (4) flow into the pulse oscillation type water control device (3) through a flow gap;
pulse oscillation formula water control device (3) includes casing (301), the bottom central point of casing (301) puts and is provided with export (304), export (304) intercommunication the inner chamber of inside working barrel (1), two import (303) have been seted up to the lateral wall of casing (301), two import (303) about export (304) are central symmetry and set up, two sprue (305) have been seted up in casing (301), two sprue (305) communicate two respectively import (303), sprue (305) are the rectangular cross section runner, reduce gradually and divide into three tributary runners of dysmorphism pressure boost runner (306), acceleration rate tributary runner (311) and helmholtz oscillation chamber runner (307) in proper order along the profit flow direction route.
2. The pulse oscillation rotational flow resistance-increasing type water and oil control device according to claim 1, wherein an inflow port and an outflow port of the flow passage (307) of the Helmholtz oscillation cavity are respectively a square-to-round passage with a gradually reduced drift diameter and a round-to-square passage with a gradually enlarged drift diameter, a special-shaped resonance cavity (308) is arranged in the middle of the flow passage (307) of the Helmholtz oscillation cavity, and the opening direction of the special-shaped resonance cavity (308) is the same as the fluid flowing direction.
3. The pulse oscillation rotational flow resistance-increasing water-control oil-stabilizing device according to claim 2, wherein the shaped resonant cavity (308) is shaped like an inner and outer double truncated cones, the opening directions of the truncated cones of the shaped resonant cavity (308) are along the flow direction of oil and water, and the inner diameters of the front and rear flow passages of the shaped resonant cavity (308) are one tenth to one half of the inner diameter of the cavity.
4. The pulse oscillation rotational flow resistance-increasing type water and oil control device according to claim 1, wherein the inlet direction of the special-shaped pressurizing branch flow channel (306) is perpendicular to the main flow channel (305), the special-shaped pressurizing branch flow channel (306) is separated into a straight flow channel forming a certain angle with the inlet direction and another bent flow channel forming a certain angle with the straight flow channel, and the straight flow channel and the bent flow channel are separated at the inlet and converged near the outlet.
5. The pulse oscillation rotational flow resistance-increasing type water-control oil-stabilizing device according to claim 4, wherein the speed-increasing branch flow channel (311) and the main flow channel (305) are staggered at a certain angle and tangentially communicated with the annular speed-increasing flow channel (309), the annular speed-increasing flow channel (309) is a two-section symmetrical and separated semicircular flow channel, the inlet and outlet widths of the semicircular flow channel are both larger than the width of the middle flow channel, so that the semicircular flow channel is integrally in a structure of being wide at two ends and narrow in the middle.
6. The pulse oscillation rotational flow resistance-increasing type water and oil control device according to claim 5, wherein a pressurizing chamber (310) is further arranged in the shell (301), the Helmholtz oscillation cavity flow passage (307), the annular speed increasing flow passage (309) and the pressurizing chamber (310) are sequentially arranged from inside to outside, the pressurizing chamber (310) is a circular area, the circumferential direction of the pressurizing chamber is a pair of mutually staggered semicircular inner walls, and the flow inlet formed by the inner walls is tangential to the flow outlet direction of the annular speed increasing flow passage (309).
7. The pulse oscillation rotational flow resistance-increasing type water and oil control device according to claim 1, wherein the one-way throttle valve (4) comprises a valve body (402), an axial positioning sleeve (401) and a sealing ball (403), the valve body (402) is fixedly arranged on the inner working barrel (1), one end of the valve body (402) is provided with a flow hole, the other end of the valve body is provided with a sealing groove, the end of the sealing groove is provided with the axial positioning sleeve (401), the axial positioning sleeve (401) is in threaded connection with the valve body (402), the sealing groove is communicated with the flow hole through a taper hole, the small-diameter end of the taper hole is connected with the flow hole, the sealing ball (403) is slidably arranged in the sealing groove, the side wall of the valve body (402) is provided with a plurality of side sealing grooves, the side sealing grooves are uniformly distributed around the circumferential direction of the valve body (402), a sealing groove (405) is arranged in the side sealing groove, and the sealing ring (405) is mounted on the valve body (402) through a sealing ring (404).
8. The pulse oscillation rotational flow resistance-increasing water-control oil-stabilizing device as claimed in claim 7, wherein an intermediate flange is fixedly sleeved on the inner working cylinder (1) along the axial direction thereof, the front end surface and the rear end surface of the valve body (402) are respectively matched with the two intermediate flanges, and the intermediate flange at the upper end is provided with a through hole communicated with the sealing groove.
9. The pulse oscillation rotational flow resistance-increasing water and oil control device according to claim 1, further comprising a base pipe (5), wherein the end of the base pipe (5) is connected with the lower end of the inner working barrel (1) through a conical surface thread.
10. The pulse oscillation rotational flow resistance-increasing type water-controlling and oil-stabilizing device according to claim 1, wherein the pulse oscillation type water-controlling device (3) further comprises a cover plate (302), and the shell (301) and the cover plate (302) are welded by adopting precise argon arc welding and vacuum brazing.
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