CN115788392A - A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device - Google Patents

Abstract

The invention discloses a pulse oscillating swirling flow increasing resistance type water control and oil stabilization device, which comprises an internal working cylinder, an external protection cylinder, a pulse oscillating water control device and a one-way throttle valve. The internal working cylinder is connected to the external protection cylinder through threads. In the barrel, there is a channel for oil and water to flow between the lower end flange of the inner working barrel and the inner wall of the outer protective barrel. The one-way throttle valve is installed between the inner working barrel and the outer protective barrel, and the side wall of the inner working barrel is set There is a pulse oscillation water control device; the pulse oscillation water control device includes a shell, the bottom center of the shell is provided with an outlet, the side wall of the shell is opened with an inlet, the inlet is connected to the main channel, and the main channel is a rectangular cross-section flow channel. The path along the oil-water flow direction gradually decreases and is divided into three branch channels in sequence: special-shaped pressurized branch channel, speed-increasing branch channel and Helmholtz oscillation cavity flow channel. It solves the existing problems such as insufficient water control and water blocking ability, inability to effectively increase oil recovery when bottom water coning, and easy accumulation of sand in the flow channel.

Description

A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device

technical field

The invention relates to the technical field of oil production engineering, in particular to a pulse oscillating swirling flow resistance increasing type water control and oil stabilization device.

Background technique

Compared with vertical wells, horizontal wells have the advantages of large drainage area, small production pressure difference, and effectively improved recovery, and are widely used. However, for bottom water reservoirs, bottom water coning will lead to premature water breakthrough in the horizontal well section, thereby reducing oil production, and even shutting down the well in severe cases. In the middle and late stage of production, methods such as hydraulic fracturing are usually used to stimulate production. Currently, the oil production channels of the tubing generally adopt a two-way connection method, which will cause pressure release in the oil production channels when the downhole is pressurized, making it impossible to carry out hydraulic fracturing. . In order to ensure long-term stable production of horizontal wells, how to effectively waterproof, control water and facilitate production with other stimulation techniques is the key to solving this problem.

The swirling flow water control devices that are common in the market can control water and stabilize oil according to the different properties (density and viscosity) of oil and water, but due to its structural limitations, only rely on the swirl chamber near the outlet to pressurize the water speed, the resistance provided is limited, and the water control effect is not obvious. For example, an intelligent flow control and water control device proposed in the patent CN113323625A, in which the rotating flow selection part can scale the oil-water pressure difference ratio very well, so as to achieve better However, there are many moving and rotating parts inside. For heavy oil and high sand content reservoirs, faults such as jamming and other faults are likely to occur between the moving pairs of parts due to blockage and wear. Once the whole device is stuck In addition, the layout of the oil production channel between the internal working cylinder and the base pipe of this patent is two-way connected, which will cause pressure relief in the oil production channel when hydraulic fracturing is required to increase production in the later stage of production, resulting in Unable to perform hydraulic fracturing.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a pulse oscillating swirling flow increasing resistance type water control and oil stabilization device, which solves the problem of insufficient water control and water blocking ability in the water control device, which cannot be used when bottom water coning Effectively improve the recovery rate, easy to accumulate sand in the flow channel and other problems.

The purpose of the present invention is achieved through the following technical proposals: a pulse oscillating swirl flow increasing resistance type water control and oil stabilizing device, including an internal working cylinder, an external protection cylinder, a pulse oscillating water control device and a one-way throttle valve, The inner working cylinder is screwed into the outer protection cylinder, and there is a channel for oil and water to flow between the lower end flange of the inner working cylinder and the inner wall of the outer protection cylinder. The one-way throttle valve Installed between the internal working cylinder and the external protection cylinder, oil and water flow into the one-way throttle valve through the passage, the side wall of the internal working cylinder is provided with the pulse oscillation water control device, the The pulse oscillation 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 water control device through the communication gap;

The pulse oscillating water control device includes a housing, an outlet is provided at the center of the bottom of the housing, the outlet communicates with the inner chamber of the internal working cylinder, and two inlets are opened on the side wall of the housing. The two inlets are centrally symmetrically arranged with respect to the outlet, and two main channels are opened in the housing, and the two main channels are respectively connected to the two inlets, and the main channel is a flow channel with a rectangular cross section. The oil-water flow path gradually decreases and is divided into three branch channels in sequence: special-shaped pressurized branch channel, speed-increasing branch channel and Helmholtz oscillation cavity channel.

The effect of adopting the above technical solution is to use the Helmholtz oscillating cavity-type flow channel and the special-shaped pressurized branch channel instead of the ordinary flow channel, and use water to generate pulse oscillation and eddy current to generate additional energy loss and form greater pressure-reducing resistance ;Use the tangential flow channel that fits the flow characteristics of water instead of the flat flow channel, which reduces the flow energy loss of water to obtain a greater flow velocity, so that it can be swirled at a higher speed in the pressurization chamber. It has the characteristics of stable structure and long working life, and the flow channel is not easy to accumulate sand. It can greatly improve the pressurization and resistance increase capacity of water, and the recovery factor is significantly improved when bottom water coning.

In some embodiments, the inlet and outlet of the channel of the Helmholtz oscillating cavity are respectively a square-to-circle channel with a tapered diameter and a circle-to-square channel with a tapered diameter. The Helmholtz A special-shaped resonant cavity is arranged in the middle of the flow channel of the oscillation cavity, and the opening direction of the special-shaped resonant cavity is the same as the fluid flow direction.

In some embodiments, the special-shaped resonant cavity is in the shape of a double truncated cone inside and outside, the opening direction of the circular frustum of the special-shaped resonant cavity is along the flow direction of oil and water, and the inner diameter of the flow channel before and after the special-shaped resonant cavity is its own One-tenth to one-half of the inner diameter of the cavity.

In some embodiments, the inlet direction of the special-shaped pressurized branch channel is perpendicular to the main channel, and the special-shaped pressurized branch channel is separated into a straight channel with a certain angle to the inlet direction and another straight channel with a certain angle to the straight channel. A curved flow channel, the straight channel is separated from the curved flow channel at the inlet and converges near the outlet.

In some embodiments, the speed-increasing branch channel and the main channel intersect at a certain angle and tangentially communicate with the annular speed-up channel. The annular speed-up channel is two symmetrical and separated semicircular channels, so The width of the inlet and outlet of the semicircular flow channel is larger than the width of the middle flow channel itself, so that the semicircular flow channel as a whole has a structure of "wide ends at both ends and narrow at the middle".

In some embodiments, a pressurization chamber is also provided in the housing, and the flow path of the Helmholtz oscillating cavity, the annular speed-increasing flow passage and the pressurization chamber are sequentially arranged from the inside to the outside. The chamber is a circular area with a pair of mutually staggered semicircular inner walls in the circumferential direction, and the inflow port formed by the inner walls is tangent to the outflow port of the annular speed-increasing 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 arranged on the inner working cylinder, and a flow hole is opened at one end of the valve body, The other end is provided with a sealing groove, the end of the sealing groove is provided with the axial positioning sleeve, the axial positioning sleeve is connected to the valve body through threads, and the sealing groove communicates with the flow hole through a tapered hole , the small-diameter end of the tapered hole is connected to the flow hole, the sealing ball is slidably arranged in the sealing groove, the side wall of the valve body is provided with a plurality of side sealing grooves, and a plurality of the side sealing grooves The grooves are evenly distributed around the circumferential direction of the valve body, and a spherical sealing ring is arranged in the side sealing groove, and the spherical sealing ring is installed on the valve body through a sealing ring collar.

In some embodiments, the inner working cylinder is fixedly fitted with an intermediate flange along its axial direction, the front and rear end surfaces of the valve body are matched with the two intermediate flanges respectively, and the upper end of the intermediate flange is set There is a through hole communicating with the sealing groove.

In some embodiments, a base pipe is also included, and the end of the base pipe is connected with the lower end of the inner working cylinder through a tapered thread.

In some embodiments, the pulse oscillation water control device further includes a cover plate, and the housing and the cover plate are welded by precision argon arc welding and vacuum brazing.

The beneficial effects of the present invention are:

1. Use the Helmholtz oscillating cavity-type flow channel and the special-shaped pressurized branch channel to replace the ordinary flow channel, use water to generate pulse oscillation and eddy current to generate additional energy loss, and form greater pressure-reducing resistance; use the flow that fits the water The characteristic tangential flow channel replaces the flat flow channel, which reduces the flow energy loss of water to obtain a greater flow velocity, so that it can be swirled at a higher speed in the booster chamber and has a stable structure and a long working life. , The flow channel is not easy to accumulate sand, which can greatly improve the pressurization and resistance increase capacity of water, and the recovery factor is significantly improved when bottom water coning.

2. When hydraulic fracturing is required to increase production, the one-way throttle valve can close the valve when high-pressure fluid is injected into the wellbore to prevent pressure leakage; during normal production, the valve remains open to ensure the smooth flow of oil production channels.

Description of drawings

Fig. 1 is a general structural schematic diagram of a pulse oscillating pressurization increasing resistance type water control and oil stabilizing device of the present invention;

Fig. 2 is a structural diagram of a pulse oscillation water control device in a pulse oscillation pressurization increasing resistance type water control and oil stabilization device of the present invention;

Fig. 3 is a cross-sectional view of a pulse oscillation water control device in a pulse oscillation pressurization increasing resistance type water control and oil stabilization device of the present invention;

Fig. 4 is a water control principle diagram of a pulse oscillation type water control device in a pulse oscillation boosting resistance increasing type water control and oil stabilization device of the present invention;

FIG. 5 is a schematic structural diagram of a flow channel AICD in the prior art;

Fig. 6 is an internal cross-sectional view of a one-way throttle valve in a pulse oscillating supercharging increasing resistance type water control and oil stabilizing device of the present invention;

Fig. 7 is a comparison chart of pressure drop between a pulse oscillating pressurization increasing resistance type water control and oil stabilization device of the present invention and the existing water control device at different flow rates;

Fig. 8 is a diagram of the water-oil pressure drop ratio of a pulse-oscillating supercharging increasing resistance type water control and oil stabilization device and the existing water control device under different flow rates;

In the figure, 1-inner working cylinder, 2-outer protection cylinder, 3-pulse oscillation water control device, 4-one-way throttle valve, 5-base pipe, 301-housing, 302-cover plate, 303-inlet , 304-exit, 305-main channel, 306-special-shaped booster branch channel, 307-Helmholtz oscillation cavity channel, 308-special-shaped resonant cavity, 309-annular speed-increasing channel, 310-pressurization chamber , 311-increasing tributary channel, 401-axial positioning sleeve, 402-valve body, 403-sealing ball, 404-sealing ring collar, 405-spherical sealing ring.

Detailed ways

The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

As shown in Figures 1 to 8, a pulse oscillating swirling flow increasing resistance type water control and oil stabilization device includes an internal working cylinder 1, an external protection cylinder 2, a pulse oscillating water control device 3 and a one-way throttle valve 4, The internal working cylinder 1 is connected to the external protection cylinder 2 through threads, and the flange surface at the upper end of the internal working cylinder 1 is closely matched with the inner wall surface of the external protection cylinder 2, and a sealing ring is provided at the front end of the mating surface for secondary sealing to ensure that the internal working cylinder 1 The sealing performance between the front end surface and the outer protection cylinder 2, the lower flange of the inner working cylinder 1 is in the shape of petals, so that there is a passage for oil and water to flow between the lower end flange of the inner working cylinder 1 and the inner wall of the outer protection cylinder 2 , the one-way throttle valve 4 is installed between the internal working cylinder 1 and the external protection cylinder 2, oil and water flow into the one-way throttle valve 4 through the channel, and the side wall of the internal working cylinder 1 is provided with a pulse oscillation water control device 3, The pulse oscillation water control device 3 is located above the one-way throttle valve 4, the oil and water in the one-way throttle valve 4 flows into the pulse oscillation water control device 3 through the flow gap; it also includes the base pipe 5, the end of the base pipe 5 The base pipe 5 and the lower end of the internal working cylinder 1 are connected with the lower end of the internal working cylinder 1 through a taper thread. After the base pipe 5 is screwed tightly with the internal working cylinder 1, it is firmly welded by argon arc welding on the internal connection surface and the external connection surface, and the oil and water mixture from the inside The channel between the working cylinder 1 and the external protection cylinder 2 enters the one-way throttle valve 4. At this time, the pressure on the inlet side of the one-way throttle valve 4 is greater than that on the outlet side, and the oil-water mixture flows into the pulse oscillation control through the one-way throttle valve 4. The water device 3, as the fluid flows in the pulse oscillation water control device 3, the pressure is increased, so that the pressure on the outlet side of the one-way throttle valve 4 is greater than that on the inlet side, and at this time, the fluid pressure reversely pushes the valve in the one-way throttle valve 4 The steel ball fits closely with the conical surface in the channel to prevent the internal fluid from flowing out in reverse; the pulse oscillation water control device 3 mainly plays the role of water control and oil stabilization, including the shell 301 and the cover plate 302, the shell 301 and the cover plate 302 is welded by precision argon arc welding and vacuum brazing to ensure the tightness and strength of the connection; the bottom center of the shell 301 is provided with an outlet 304, and the outlet 304 is connected to the inner cavity of the internal working cylinder 1, and the shell 301 There are two inlets 303 on the side wall, and the two inlets 303 are centrally symmetrically arranged with respect to the outlet 304. There are two main channels 305 in the housing 301, and the two main channels 305 are respectively connected to the two inlets 303. The main channels 305 are Rectangular cross-section channel, the path gradually decreases along the oil-water flow direction and is divided into three branch channels in sequence: special-shaped pressurized branch channel 306, speed-increasing branch channel 311 and Helmholtz oscillation chamber flow channel 307, among which the special-shaped pressurized branch channel 306 and the Helmholtz oscillating chamber channel 307 mainly function to restrict and pressurize the water flow, and the speed-increasing branch channel 311 mainly plays the role of draining water and increasing the flow velocity.

In some embodiments, as shown in FIG. 2 to FIG. 5 , the inflow port and the outflow port of the Helmholtz oscillating cavity channel 307 are respectively a square-to-circle channel with a tapered diameter and a circular-to-square channel with a tapered diameter. channel, a special-shaped resonant cavity 308 is arranged in the middle of the flow channel 307 of the Helmholtz oscillating cavity, and the opening direction of the special-shaped resonant cavity 308 is the same as the direction of fluid flow. The resonant cavity, the small resonant cavity is located between the special-shaped resonant cavity 308 and the outlet of the Helmholtz oscillation cavity flow channel 307, the special-shaped resonant cavity 308 is in the shape of a double circular table inside and outside, and the opening direction of the circular table of the special-shaped resonant cavity 308 is along the According to the flow direction of oil and water, the inner diameter of the flow channel before and after the special-shaped resonant cavity 308 is one-tenth to one-half of the internal diameter of the cavity itself, and the flow channel structure of the Helmholtz oscillation cavity flow channel 307 is "narrow- In the form of "wide-narrow", when the fluid reaches the entrance of the Helmholtz oscillation cavity flow channel 307, due to the narrowing of the flow channel, the flow of the fluid at the entrance is blocked to generate initial pressure, and then the flow is accelerated in the narrow channel to enter the abnormal resonance In the cavity 308, due to 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 reciprocates in this way until the pressure in the cavity increases to a certain value, and the fluid is stable from The next narrow channel flows out, but the fluid that subsequently flows into the cavity will continue to oscillate and pressurize, and then flow into the small resonant cavity. The opening of the small resonant cavity is smaller and shorter than that of the special-shaped resonant cavity 308. The fluid The oscillation frequency in the cavity is higher, and pressure can be generated more quickly. The inlet direction of the special-shaped pressurized branch channel 306 is perpendicular to the main channel 305, and the special-shaped pressurized branch channel 306 is separated into a straight channel with a certain angle to the inlet direction and another A curved channel with a certain angle to the straight channel. The straight channel and the curved channel are separated at the entrance and converge near the outlet. A flow channel, the inlet direction is perpendicular to the main channel 305, and then separated into a branch channel with an acute angle to the inlet direction and a branch channel that extends along the inlet direction and then bends with a certain radius, and finally merges with the previous branch channel; The branch channel 311 and the main channel 305 are staggered at a certain angle and tangentially connected to the annular speed-up flow channel 309. The annular speed-up flow channel 309 is two symmetrical and separated semicircular flow channels. The entrance and exit of the semicircular flow channel The width is greater than the width of the middle flow channel itself, so that the semicircular flow channel as a whole has a structure of "wide ends at both ends and narrow in the middle". Speed-up flow channel 309, the annular speed-up flow channel 309 is two symmetrically distributed semicircular flow channels, the two ends of the flow channel (that is, the inlet and outlet) are wider, and the middle section is narrower, and a certain pressure will be generated after the fluid flows in And accelerate the flow, the fluid is accelerated by the annular speed-up channel 309 and directly flows into the pressurization chamber 310, and the Helmholtz oscillation chamber flow channel 307, the annular speed-up channel 309 and the pressurization chamber 310 are arranged sequentially from the inside and outside , the boost chamber 310 is A circular area, the circumferential direction is a pair of semicircular inner walls staggered from each other, the inflow port formed by the inner wall is tangent to the outflow direction of the annular speed-increasing flow channel 309; due to the different properties of oil and water, the viscosity of water is low, The density is high, the flow is mainly dominated by the inertial force, and it is easy to flow along the shape of the flow channel; the oil has a high viscosity and low density, the flow is mainly dominated by the viscous force, and the flow direction is easy to change. Therefore, when oil and water flow into the pulse oscillation type water control device 3, their flow paths are different. Most of the oil flows out directly from the outlet along the speed-increasing branch channel 311 and the special-shaped pressurizing branch channel 306, and the flow path is the shortest; but the water is different, and the water is divided into three parts, which enter the Helmholtz oscillation chamber along the main channel 305 respectively Shaped flow channel 307, diverted from the main channel to the special-shaped booster branch channel 306 and the speed-increasing branch channel 311, when water flows into the special-shaped booster branch channel 306, because it flows along the tangential direction, most of the water merges with the straight channel through the curved flow channel Afterwards, energy loss will be generated, thereby forming pressure, so that the subsequent water is subjected to resistance and becomes difficult to flow in. Similarly, the water passing through the Helmholtz oscillating cavity type flow channel 307 will also be subject to resistance, so the water will flow between the two A large static pressure is generated near the entrance of each flow channel, which prevents the flow of subsequent water. Therefore, most of the water will flow along the speed-increasing branch channel 311, and because the water flow in the other two channels is blocked, the water flowing along the speed-increasing branch channel 311 will be greatly increased by the pressure. The accelerated water continues to pass through the swirling acceleration of the annular speed-increasing channel 309 and the booster chamber 310, where more water gathers and rotates, while the direction of the outlet 304 is perpendicular to the swirling direction of the water, and the high-speed flowing water It is difficult to change the direction of flow. Therefore, the swirling water in the pressurization chamber 310 continues to increase, and the pressure is also increasing. When the pressure reaches a certain value, the water flowing out from the outlet 304 is equal to the amount of water gathered in the pressurization chamber 310. will remain consistent, the flow reaches a steady state, and the pressure does not increase. In addition, since the flow rate of water in the oscillating water control device is very fast, and periodic velocity oscillations will be formed in the flow channel 307 of the Helmholtz oscillating chamber, it is difficult to form sand deposits inside the device under the washing of water. It has the characteristics of stable structure and long working life, and the flow channel is not easy to accumulate sand. It can greatly improve the pressurization and resistance increase capacity of water, and the recovery factor is significantly improved when bottom water coning.

Further illustrate, as shown in Figure 7 and Figure 8, under the same flow conditions, the pulse oscillation water control device 3 of the present invention has a maximum water pressure drop of 65.1% compared with the existing water control device, and the maximum oil pressure The water-oil pressure drop ratio has increased by 91.8%, which means that the resistance of water has been greatly increased, while the resistance of oil has been reduced, the water control effect has been greatly improved, and the water-bearing reservoir has also been greatly improved. recovery factor.

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 arranged on the internal working cylinder 1 , and one end of the valve body 402 A flow hole is opened, and a sealing groove is opened at the other end. The end of the sealing groove is provided with an axial positioning sleeve 401. The axial positioning sleeve 401 is connected to the valve body 402 through threads. The sealing groove communicates with the flow hole through a tapered hole, and the tapered hole The small diameter end of the valve body is connected to the flow hole, and 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, and the plurality of side sealing grooves are evenly distributed around the circumferential direction of the valve body 402. The side sealing grooves There is a spherical sealing ring 405 inside, and the spherical sealing ring 405 is installed on the valve body 402 through the sealing ring collar 404. The inner working cylinder 1 is fixed with an intermediate flange along its own axial direction. The two intermediate flanges are matched, and the upper intermediate flange is provided with a through hole communicating with the sealing groove. Oil flows into the wellbore from the formation along the direction of the arrow in Figure 2. At this time, because the formation pressure is much greater than the pressure in the wellbore, the sealing ball 403 is separated from the conical surface of the tapered hole and close to the end surface of the axial positioning sleeve 401, and the oil flows through the sealing The ball 403 flows into the wellbore through the through hole of the axial positioning sleeve 401. At this time, the one-way throttle valve 4 is in an open state; once it is necessary to perform hydraulic fracturing to increase production, inject high-pressure fluid into the wellbore. At this time, the pressure in the wellbore must be Far greater than the formation pressure, at this time the sealing ball 403 is under the pressure and closely fits the conical surface of the passage to completely seal the passage, the throttle valve is in a closed state, and the high-pressure fluid cannot be released and is smoothly pressed into the formation.

In describing the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top ", "inner", "front", "central", "both ends" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention; Compared with the current implementation scheme in the prior art to achieve better beneficial effects in specific cases, it is not intended to directly achieve the best use effect in the industry.

The above descriptions are only preferred embodiments of the present invention, and it should be understood that the present invention is not limited to the forms disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and Modifications can be made within the scope of the ideas described herein, by virtue of the above teachings or skill or knowledge in the relevant art. However, changes and changes made by those skilled in the art do not depart from the spirit and scope of the present invention, and should all be within the protection scope of the appended claims of the present invention.

Claims (10)

1. A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device, characterized in that it includes an internal working cylinder (1), an external protection cylinder (2), a pulse oscillating water control device (3) and a one-way throttling Valve (4), the inner working cylinder (1) is connected in the outer protective cylinder (2) through threads, the lower end flange of the inner working cylinder (1) is connected with the inner wall of the outer protective cylinder (2) There is a passage for oil and water to flow through, and the one-way throttle valve (4) is installed between the inner working cylinder (1) and the outer protection cylinder (2), and the oil and water flow into the one-way valve through the passage. In the throttle valve (4), the side wall of the internal working cylinder (1) is provided with the pulse oscillation water control device (3), and the pulse oscillation water control device (3) is located on the one-way joint Above the flow valve (4), the oil and water in the one-way throttle valve (4) flows into the pulse oscillation water control device (3) through the flow gap; The pulse oscillating water control device (3) includes a housing (301), an outlet (304) is provided at the bottom center of the housing (301), and the outlet (304) communicates with the internal working cylinder (1 ), the side wall of the casing (301) is provided with two inlets (303), and the two inlets (303) are centrally symmetrically arranged with respect to the outlet (304), and the casing (301 ) are provided with two main channels (305), and the two main channels (305) are respectively connected to the two inlets (303). Gradually decrease and sequentially divide into three branch channels of special-shaped pressurized branch channel (306), speed-increasing branch channel (311) and Helmholtz oscillating cavity channel (307). 2. A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device according to claim 1, characterized in that the inflow port and the outflow port of the Helmholtz oscillating cavity channel (307) are respectively through A square-to-circle channel with a tapered diameter and a circular-to-square channel with a gradually expanded diameter. A special-shaped resonant cavity (308) is provided in the middle of the Helmholtz oscillation cavity flow channel (307), and the special-shaped resonant cavity The opening of the body (308) is in the same direction as the fluid flow. 3. A pulse oscillating swirl flow increasing resistance type water control and oil stabilization device according to claim 2, characterized in that, the special-shaped resonant cavity (308) is in the shape of a double circular frustum inside and outside, and the special-shaped resonant cavity ( The opening direction of the round platform of 308) is along the flow direction of oil and water, and the inner diameters of the flow channels before and after the special-shaped resonant cavity (308) are both one-tenth to one-half of the internal diameter of the cavity itself. 4. A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device according to claim 1, characterized in that the inlet direction of the special-shaped pressurized branch channel (306) is perpendicular to the main channel (305), and the The special-shaped pressurized branch channel (306) is separated into a straight channel at a certain angle to the inlet direction and another curved channel at a certain angle to the straight channel, and the straight channel is separated from the curved channel at the entrance. Converge near the exit. 5. A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device according to claim 4, characterized in that the speed-increasing tributary channel (311) and the main channel (305) intersect at a certain angle and tangentially Connected to the annular speed-up flow channel (309), the ring-shaped speed-up flow channel (309) is two symmetrical and separated semi-circular flow channels, the width of the entrance and exit of the semi-circular flow channel is larger than its own middle flow channel width, so that the semicircular flow channel as a whole has a structure of "wide ends at both ends and narrow at the middle". 6. A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device according to claim 5, characterized in that a pressurization chamber (310) is also provided in the housing (301), and the The channel of the Mholtz oscillation chamber (307), the annular speed-increasing channel (309) and the pressurization chamber (310) are arranged sequentially from the inside and outside. The pressurization chamber (310) is a circular area with a The direction is a pair of semicircular inner walls staggered from each other, and the inflow port formed by the inner walls is tangent to the outflow port direction of the annular speed-increasing channel (309). 7. A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device according to claim 1, characterized in that 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 cylinder (1), one end of the valve body (402) is provided with a flow hole, and the other end 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 connected to the valve body (402) through threads, and the sealing groove communicates with the A flow hole, the small-diameter end of the tapered hole is connected to the flow hole, the sealing ball (403) is slidably set in the sealing groove, and the side wall of the valve body (402) is provided with a plurality of side seals A plurality of side sealing grooves are evenly distributed around the circumference of the valve body (402), and a spherical sealing ring (405) is arranged in the side sealing groove, and the spherical sealing ring (405) is clamped by the sealing ring Ring (404) is installed on the valve body (402). 8. A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device according to claim 7, characterized in that, the inner working cylinder (1) is fixedly fitted with an intermediate flange along its own axial direction, and the The front and rear end surfaces of the valve body (402) are respectively matched with the two intermediate flanges, and the upper intermediate flange is provided with a through hole communicating with the sealing groove. 9. A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device according to claim 1, characterized in that it also includes a base pipe (5), the end of the base pipe (5) is in contact with the inner The lower end of the work cylinder (1) is connected by a taper thread. 10. A pulse oscillating swirling flow increasing resistance type water control and oil stabilization device according to claim 1, characterized in that, the pulse oscillating water control device (3) also includes a cover plate (302), and the shell The body (301) and the cover plate (302) are welded by precision argon arc welding and vacuum brazing.

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