An umbrella-shaped adjustable flow spiral separation sand control downhole choke

Abstract

The present invention discloses an umbrella-shaped adjustable flow spiral separation sand control downhole choke, comprising a deployment head, a fishing head, a slip device, a sealing device, a central tube, an umbrella-shaped adjustable flow device, and a spiral separation sand control device. The deployment head, fishing head, slip device, and sealing device are all coaxially mounted with the central tube, which extends through the central tube. The umbrella-shaped adjustable flow device is connected to the central tube via a guide tube, and the sand control structure is connected to the umbrella-shaped adjustable flow device via a gas collection hood. The present invention is characterized by simple deployment, the ability to adjust the throttle hole closure in real time to change the throttle area according to the choke bottomhole temperature and pressure, and separation and sand control through rotating spiral blades.

Description

Technical Field

[0001] The invention belongs to the technical field of downhole throttling in oil and gas field development, and particularly relates to an umbrella-shaped adjustable flow spiral separation sand prevention type downhole throttle. Background Art

[0002] As the demand for natural gas gradually increases, restrictive factors have appeared in the production of many natural gas wells. Hydrate formation has seriously affected normal production operations, and many problems have occurred in traditional production processes. In order to improve the efficiency of natural gas production, more and more gas fields are using downhole throttling technology, and downhole throttling devices are favored by major oil and gas fields.

[0003] Downhole chokes are of great significance to the stable production of natural gas. They are currently an important technology in China for solving the problem of hydrate ice blockage in oil pipelines. They destroy the conditions for hydrate formation by cooling and reducing pressure to prevent hydrate blockage in the wellbore. The structural performance of downhole chokes directly affects the throttling effect. Most existing chokes have a single structure type and cannot adjust the size of the choke nozzle. They cannot adjust the throttling area in real time according to changes in bottomhole temperature and pressure below the downhole choke. They have poor sand control performance and cannot grade sand control according to sand particle size. This can easily cause sand sticking, sand blockage, and sand burial. Choke failures are frequent, seriously affecting the development of downhole chokes and the production efficiency of natural gas wells.

[0004] Existing adjustable downhole throttles, such as the rotary air nozzle automatic adjustment downhole throttle, have the authorization announcement number CN104504529 B. This throttle mainly consists of a dispenser, a pressure cover, a pressure rod, a main body, a salvage neck, a slip, a cone seat, a retaining ring, a release claw, a piston cylinder, a rubber cylinder, an air cylinder, a sand cover, and a lower center pipe. The guide sleeve in the sand cover is provided with a spring and an air nozzle sleeve with an air nozzle. The shaft core in the air nozzle sleeve is provided with a rotating spline and a transmission spline, and a positioning spline is provided in the guide sleeve. A single rubber cylinder seal is used, and the retraction of the rubber cylinder can prevent the rubber cylinder from rubbing against the oil pipe when lifting, making salvage easier. When the wellbore air pressure changes, the spline transmission automatically changes the throttling channel and adjusts the size of the air nozzle to achieve production adjustment without salvaging the throttle, thereby reducing production costs. The shortcomings of this throttle are: the axial movement of the transmission spline drives the rotating spline to disengage the positioning spline, and the ratchet on the end face of the positioning spline drives the rotating spline to rotate, changing the throttling channel between the air nozzle and the guide sleeve to achieve throttling adjustment. This adjustment method requires high spline centering progress, complex structure and manufacturing process, specialized equipment, and high production cost. The ratchet is prone to wear and noise, and the rotation speed is slow. Summary of the Invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an umbrella-shaped adjustable flow spiral separation and sand control type downhole throttle, which has the characteristics of simple deployment, real-time adjustment of the throttle hole closure to change the throttling area according to the bottom hole temperature and pressure of the throttle, and separation and sand control by rotating spiral blades.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] An umbrella-shaped adjustable flow spiral separation sand control type downhole choke, comprising a delivery head 1, a fishing head 2, a slip device 3, a sealing device 4, a central tube 5, an umbrella-shaped adjustable flow device 6, a spiral separation sand control device 7, and a core shaft 10; the delivery head 1, fishing head 2, slip device 3, and sealing device 4 are all coaxially mounted with the central tube 5, which passes through the central tube 5; the umbrella-shaped adjustable flow device 6 is connected to the central tube 5 via a guide tube 8, and the spiral separation sand control device 7 is connected to the umbrella-shaped adjustable flow device 6 via a gas collecting hood 9;

[0008] One end of the central tube 5 is connected to the delivery head 1, and the other end is connected to the guide tube 8; the delivery head 1 is coaxial with the central tube 5 and the core shaft 10, and is clamped between the core shaft 10 and the upper end of the central tube 5 by a pin.

[0009] The fishing head 2 is provided with a fishing head ring 12 . The fishing head 2 is coaxial with the central tube 5 , with the upper end sleeved on the upper end of the core shaft 10 and the lower end fixedly connected to the upper end of the slip device 3 .

[0010] The slip device 3 is cylindrical and conical, including a slip tooth 301 and a slip body 302, and is coaxial with the central tube 5; the upper end of the slip body 302 is fixedly connected to the lower end of the salvage head 2, and the lower end is integrated with the slip tooth 301; the slip tooth 301 is cylindrical and conical, and is in contact with the surface of the conical tube 13.

[0011] The tapered tube 13 is cylindrical at the upper and lower ends and tapered in the middle, and is sleeved on the outside of the central tube 5 , with the surface of the tapered body fitting the inner surface of the slip teeth 301 .

[0012] The sealing device 4 includes an upper sealing rubber cylinder 401, a rubber cylinder connector 402 and a lower sealing rubber cylinder 403, all of which are coaxial with the central cylinder 5. The outer surface of the upper sealing rubber cylinder 401 is cylindrical and the inner surface is a cylindrical cone; the upper end of the rubber cylinder connector 402 is a cylindrical cone and the lower end is a cylinder; the lower sealing rubber cylinder 403 has a similar structure to the upper sealing rubber cylinder 401. The upper sealing rubber cylinder 401 is sleeved on the conical cylinder 13, and the cylindrical cone at the upper end of the rubber cylinder connector 402 is embedded in the cylindrical cone on the inner surface of the upper sealing rubber cylinder 401. The lower end of the rubber cylinder connector 402 is embedded by the lower sealing rubber cylinder 403, and the lower sealing rubber cylinder 403 is sleeved on the sliding sleeve 14.

[0013] The sliding sleeve 14 is coaxial with the central tube 5 and is sleeved on the central tube 5 . The upper end of the upper cylinder 15 is connected to the sliding sleeve 14 through a thread, and the lower end of the upper cylinder 15 is connected to the lower cylinder 16 through a thread.

[0014] The upper end of the lower cylinder 16 is connected to the upper cylinder 15 through a thread, and the lower end is connected to the guide head 21 through a thread. An umbrella-shaped adjustable flow device 6 and a spiral separation and sand control device 7 are provided in the lower cylinder 16. The spiral separation and sand control device 7 is connected to the guide head 21, and the umbrella-shaped adjustable flow device 6 and the spiral separation and sand control device 7 are connected through an air collecting hood 9.

[0015] The central tube 5 is coaxial with the launching head 1 , the fishing head 2 , the slip device 3 , the sealing device 4 , the tapered tube 13 and the sliding sleeve 14 , and the lower end of the central tube 5 is connected to the guide tube 8 .

[0016] The upper end of the guide tube 8 is connected to the lower end of the central tube 5, and the lower end of the guide tube 8 is connected to the umbrella-shaped adjustable flow device 6 through the gas collecting cover 17. The outer wall of the guide tube 8 is covered with a spring 18, and the spring sleeve 19 is between the spring 18 and the upper cylinder 15. A pad 20 is provided between the spring 18 and the upper end of the guide tube 8.

[0017] The umbrella-shaped adjustable flow device 6 includes a sleeve 601, a core tube 602, a valve stem 603, a valve cover 604, a connecting plate 605, a sliding rod 606, a sliding seat 607, a fixed seat 608, a telescopic plate 609, a throttle hole 1 610, a throttle hole 2 611 and a throttle hole 3 612; the upper surface of the sleeve 601 is provided with three groups of throttle holes 1 610, throttle holes 2 611 and throttle holes 3 612 of different diameters, the core tube 602 is embedded in the sleeve 601, and the valve stem 603 is embedded in the core tube 602. Inside, the upper end of the valve stem 603 is fixedly connected to the valve cover 604, the valve cover 604 is connected to the slide 607 through the connecting plate 605, the slide 607 is sleeved on the slide rod 606, the slide rod 606 is fixed to the sleeve 601 through the fixing seat 608, one end of the telescopic plate 609 is fixed to the sleeve 601, and the top of the telescopic plate 609 is fixed to the slide 607. The closing of the throttle hole 1 610, the throttle hole 2 611, and the throttle hole 3 612 is similar to the opening and closing of an umbrella, so it is called an umbrella-shaped adjustable flow device.

[0018] The spiral separation and sand control device 7 includes a sand control tube 701, a spiral blade 702, an upper sand control tube cover 703 and a lower sand control tube cover 704; the upper sand control tube cover 703 and the lower sand control tube cover 704 are respectively connected to the upper and lower ends of the sand control tube 701 through threads, the upper end of the spiral blade 702 is threadedly connected to the upper sand control tube cover 703, and passes through the middle of the sand control tube 701. The upper sand control tube cover 703 of the spiral separation and sand control device 7 is connected to the core tube 602 of the umbrella-shaped adjustable flow device 6 through a threaded connection gas collecting cover 9, and the entire spiral separation and sand control device 7 passes through the lower cylinder 16.

[0019] Beneficial effects of the present invention:

[0020] The umbrella-shaped adjustable flow device of the present invention uses the principle of a connecting rod mechanism, has a simple structure, a simple manufacturing process, and is low in cost. It can adjust the closure of the throttle hole in real time according to the temperature and pressure changes of the airflow below the downhole throttle by pushing the valve stem with the energy of the airflow itself, thereby changing the throttle area, changing the original simple throttle nozzle structure, and improving gas production efficiency. The spiral separation sand control device adopts a spiral mechanism and utilizes the principle of centrifugal force. During the working process, the mixture of gas, liquid and formation sand is first passed through the sand control net to initially separate larger sand particles. Under the action of high-speed airflow, the spiral blades rotate, and the gas, liquid and formation sand are separated into smaller sand particles again through centrifugal motion. The secondary sand control effectively solves the problems of sand stuck, sand blockage and sand burial in the throttle caused by serious sand production in the formation, and reduces the problem of frequent failure of the throttle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a cross-sectional view of the present invention.

[0023] Figure 3 It is a schematic diagram of the slip device of the present invention.

[0024] Figure 4 It is a cross-sectional view of the sealing device of the present invention.

[0025] Figure 5 It is a schematic diagram of the connection between the throttling device and the sand control device of the present invention.

[0026] Figure 6 It is a cross-sectional view of the sand control device of the present invention.

[0027] Figure 7 It is a schematic diagram of the sand control device of the present invention.

[0028] Figure 8 It is a schematic diagram of the throttling device of the present invention.

[0029] Figure 9 It is a cross-sectional view of the throttling device of the present invention. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below with reference to the accompanying drawings.

[0031] like Figures 1-9As shown: an umbrella-shaped adjustable flow spiral separation sand control type downhole choke, mainly composed of a delivery head 1, a fishing head 2, a slip device 3, a sealing device 4, a central tube 5, an umbrella-shaped adjustable flow device 6 and a spiral separation sand control device 7. The delivery head 1 is located at the uppermost end of the choke, the fishing head 2 is located below the delivery head 1, the slip device 3 is located below the fishing head 2, and the sealing device 4 is located below the slip device 3. The central tube 5 runs through the delivery head 1, the fishing head 2, the slip device 3 and the sealing device 4. The umbrella-shaped adjustable flow device 6 is connected to the central tube 5 through a guide tube 8. The spiral separation sand control device 7 is located at the lowermost end of the choke and is connected to the umbrella-shaped adjustable flow device 6 through an air collecting cover 9.

[0032] The delivery head 1 is coaxial with the central tube 5 and the core shaft 10 and is clamped between the core shaft 10 and the upper end of the central tube 5 by pins.

[0033] The fishing head 2 is coaxial with the central tube 5 , the upper end of which is sleeved on the upper end of the core shaft 10 , and the lower end of which is fixedly connected to the upper end of the slip device 3 , and is provided with a fishing head ring 12 .

[0034] The slip device 3 is conical, consisting of a slip tooth 301 and a slip ring 302, and is coaxial with the central tube 5; the upper end of the slip tooth 301 is fixedly connected to the lower end of the fishing head 2, and the lower end is in contact with the surface of the conical tube 13; the slip ring 302 is provided at the neck of the slip 301.

[0035] The tapered tube 13 is cylindrical at the upper and lower ends and tapered in the middle, and is sleeved on the outside of the central tube 5 , with the surface of the tapered body fitting the inner surface of the slip teeth 301 .

[0036] The sealing device 4 consists of an upper sealing rubber cylinder 401, a rubber cylinder connector 402 and a lower sealing rubber cylinder 403, all of which are coaxial with the central cylinder 5. The upper sealing rubber cylinder 401 is sleeved on the conical cylinder 13, and the rubber cylinder connector 402 and the lower sealing rubber cylinder 403 are sleeved on the sliding sleeve 14.

[0037] The sliding sleeve 14 is coaxial with the central tube 5 and is sleeved on the central tube 5 , and the lower end is connected to the upper tube 15 .

[0038] The upper end of the upper cylinder 15 is connected to the sliding sleeve 14 , and the lower end is connected to the lower cylinder 16 .

[0039] The upper end of the lower cylinder 16 is connected to the upper cylinder 15, and the lower end is connected to the guide head 21. An umbrella-shaped adjustable flow device 6 and a spiral separation and sand prevention device 7 are provided inside.

[0040] The central tube 5 is coaxial with the launching head 1 , the fishing head 2 , the slip device 3 , the sealing device 4 , the tapered tube 13 and the sliding sleeve 14 , and the lower end of the central tube 5 is connected to the guide tube 8 .

[0041] The upper end of the guide tube 8 is connected to the lower end of the central tube 5, and the lower end is connected to the umbrella-shaped adjustable flow device 6 through the gas collecting cover 17. The outer wall of the guide tube 8 is covered with a spring 18, and the spring sleeve 19 is between the spring 18 and the upper cylinder 15. A pad 20 is provided between the spring 18 and the upper end of the guide tube 8.

[0042] The umbrella-shaped adjustable flow device 6 consists of a sleeve 601, a core tube 602, a valve stem 603, a valve cover 604, a connecting plate 605, a sliding rod 606, a sliding seat 607, a fixed seat 608 and a telescopic plate 609. The upper surface of the sleeve 601 is provided with holes of different diameters. The core tube 602 is embedded in the sleeve 601, and the valve stem 603 is embedded in the core tube 602. The upper end of the valve stem 603 is fixedly connected to the valve cover 604. The valve cover 604 is connected to the sliding seat 607 through the connecting plate 605. The sliding seat 607 is sleeved on the sliding rod 606. The sliding rod 606 is fixed on the sleeve 601 through the fixed seat 608. One end of the telescopic plate 609 is fixed on the sleeve 601, and the top of the telescopic plate 609 is fixed to the sliding seat 607.

[0043] The spiral separation and sand control device 7 consists of a sand control barrel 701, spiral blades 702, an upper sand control barrel cover 703, and a lower sand control barrel cover 704. The upper end of the spiral separation and sand control device 7 is connected to the core barrel 602 of the umbrella-shaped adjustable flow device 6 through the gas collection cover 9, and the lower end is connected to the guide head 21.

[0044] Working principle of the present invention:

[0045] like Figure 1 and Figure 2 As shown, the choke is operated through the wellhead blowout preventer and the labor tool. When the choke is lowered to the designed position through the steel wire, the steel wire is pulled up, and the center tube and the cone tube 13 are driven upward by pulling the delivery head 1. The cone tube 13 moves along the slip 301 as shown in FIG. Figure 3 As the inner conical surface moves upward, the slips 301 are stretched open by the conical cylinder 13 and stuck on the inner wall of the oil pipe. The slip ring 302 limits the opening angle of the slips 301, pulling the wire to increase the lifting force, and the pin 11 fixing the injection head 1 and the central tube 5 is sheared. At this time, the compressed spring 18 in the upper cylinder 15 is released. The released elastic force drives the spring sleeve 19 to press against the sliding sleeve 14, driving the upper cylinder 15 upward. Figure 4 As shown, the lower sealing rubber cylinder 403 expands under the action of the upward movement of the sleeve 14. As the lower sealing rubber cylinder 403 gradually expands, the sleeve 14 continues to move upward, pushing against the rubber cylinder connector 402 to expand the upper sealing rubber cylinder 401. As the tension between the upper sealing rubber cylinder 401 and the lower sealing rubber cylinder 403 gradually increases, a seat seal is formed, and the sleeve 14 stops moving upward. The choke is suspended on the inner wall of the oil pipe by the slip device 3 and the sealing device 4. When the well is opened for production, the bottomhole gas, liquid and formation sand mixture enters the guide head 21 under the action of the airflow. As the airflow pressure increases, the flow rate increases, as shown in FIG. Figure 6As shown, the spiral blades 702 begin to rotate under the action of high-speed airflow, causing the mixture of gas, liquid, and formation sand brought in by the airflow to undergo centrifugal motion, separating larger sand particles. The separated mixture passes through the lower sand control cylinder cover 704, further preventing some sand particles from entering the sand control cylinder 701. After the mixture enters the sand control cylinder 701, the spiral blades 701 continue to rotate under the action of the airflow, further separating smaller sand particles. The smaller sand particles fall into the well through the holes in the sand control cylinder 701 and the lower sand control cylinder cover 704. After the secondary sand control, the mixture passes through the air collection cover 9 and enters the umbrella-shaped adjustable flow device 6. Figure 8 and Figure 9 As shown, under the influence of airflow pressure and downhole temperature, valve stem 602 moves upward within core barrel 603, driving valve cover 604 upward. Connecting plate 605, attached to valve cover 604, drives expansion plate 609, attached to slider 607, to contract radially. As valve stem 602 moves upward, expansion plate 609 contracts, partially opening throttle holes in sleeve 601. As airflow pressure and downhole temperature increase, more throttle holes in sleeve 601 open. Conversely, as airflow pressure and downhole temperature decrease, valve stem 602 descends, expansion plate 609 closes, and some throttle holes open, thereby enabling real-time adjustment of the throttle area of ​​the throttle according to airflow pressure and downhole temperature.

Claims

1. An umbrella-shaped adjustable flow spiral separation sand control type downhole choke, characterized in that: It comprises a delivery head (1), a salvaging head (2), a slip device (3), a sealing device (4), a central tube (5), an umbrella-shaped adjustable flow device (6), a spiral separation and sand control device (7) and a core shaft (10); the delivery head (1), the salvaging head (2), the slip device (3) and the sealing device (4) are all coaxially installed with the central tube (5), the central tube (5) runs through them, the umbrella-shaped adjustable flow device (6) is connected to the central tube (5) through a guide tube (8), and the spiral separation and sand control device (7) is connected to the umbrella-shaped adjustable flow device (6) through an air collecting hood (9); One end of the central tube (5) is connected to the delivery head (1), and the other end is connected to the guide tube (8); The delivery head (1) is coaxial with the central tube (5) and the core shaft (10), and is clamped between the core shaft (10) and the upper end of the central tube (5) by a pin; The umbrella-shaped adjustable flow device (6) comprises a sleeve (601), a core tube (602), a valve stem (603), a valve cover (604), a connecting plate (605), a sliding rod (606), a sliding seat (607), a fixed seat (608), a telescopic plate (609), a throttle hole 1 (610), a throttle hole 2 (611) and a throttle hole 3 (612); the upper surface of the sleeve (601) is provided with three groups of throttle holes 1 (610), throttle holes 2 (611) and throttle holes 3 (612) of different diameters; the core tube (602) is embedded in the sleeve (601), and the valve stem (603 ) is embedded in the core tube (602), the upper end of the valve stem (603) is fixedly connected to the valve cover (604), the valve cover (604) is connected to the slide (607) through the connecting plate (605), the slide (607) is sleeved on the slide rod (606), the slide rod (606) is fixed on the sleeve (601) through the fixing seat (608), one end of the telescopic plate (609) is fixed on the sleeve (601), and the top of the telescopic plate (609) is fixed to the slide (607), and the closing of the throttling hole 1 (610), the throttling hole 2 (611), and the throttling hole 3 (612) is similar to the opening and closing of an umbrella.

2. The umbrella-shaped adjustable flow spiral separation sand control downhole choke according to claim 1, characterized in that: A salvage head ring (12) is provided on the salvage head (2). The salvage head (2) is coaxial with the center tube (5), the upper end of the salvage head is sleeved on the upper end of the core shaft (10), and the lower end is fixedly connected to the upper end of the slip device (3).

3. The umbrella-shaped adjustable flow spiral separation sand control downhole choke according to claim 1, characterized in that: The slip device (3) is cylindrical and conical, and comprises a slip tooth (301) and a slip body (302), and is coaxial with the central tube (5); the upper end of the slip body (302) is fixedly connected to the lower end of the salvage head (2), and the lower end is integrated with the slip tooth (301); the slip tooth (301) is cylindrical and conical, and the slip tooth (301) is in contact with the surface of the conical tube (13); The tapered tube (13) is cylindrical at both ends and tapered in the middle, and is sleeved outside the central tube (5). The surface of the tapered tube fits the inner surface of the slip teeth (301).

4. The umbrella-shaped adjustable flow spiral separation sand control downhole choke according to claim 1, characterized in that: The sealing device (4) comprises an upper sealing rubber cylinder (401), a rubber cylinder connector (402) and a lower sealing rubber cylinder (403), all of which are coaxial with the central cylinder (5). The outer surface of the upper sealing rubber cylinder (401) is cylindrical and the inner surface is cylindrical cone; the upper end of the rubber cylinder connector (402) is a cylindrical cone and the lower end is a cylinder; the upper sealing rubber cylinder (401) is sleeved on the conical cylinder (13), the cylindrical cone at the upper end of the rubber cylinder connector (402) is embedded in the cylindrical cone on the inner surface of the upper sealing rubber cylinder (401), the lower end of the rubber cylinder connector (402) is embedded by the lower sealing rubber cylinder (403), and the lower sealing rubber cylinder (403) is sleeved on the sliding sleeve (14).

5. The umbrella-shaped adjustable flow spiral separation sand control downhole choke according to claim 4, characterized in that: The sliding sleeve (14) is coaxial with the central cylinder (5) and is sleeved on the central cylinder (5). The upper end of the upper cylinder (15) is connected to the sliding sleeve (14) through a thread, and the lower end is connected to the lower cylinder (16) through a thread.

6. The umbrella-shaped adjustable flow spiral separation sand control downhole choke according to claim 5, characterized in that: The upper end of the lower cylinder (16) is connected to the upper cylinder (15) through a thread, and the lower end is connected to the guide head (21) through a thread. An umbrella-shaped adjustable flow device (6) and a spiral separation and sand control device (7) are provided in the lower cylinder (16). The spiral separation and sand control device (7) is connected to the guide head (21). The umbrella-shaped adjustable flow device (6) and the spiral separation and sand control device (7) are connected through an air collecting hood (9).

7. The umbrella-shaped adjustable flow spiral separation sand control downhole choke according to claim 6, characterized in that: The central tube (5) is coaxial with the delivery head (1), the fishing head (2), the slip device (3), the sealing device (4), the tapered tube (13) and the sliding sleeve (14), and the lower end of the central tube (5) is connected to the guide tube (8).

8. The umbrella-shaped adjustable flow spiral separation sand control downhole choke according to claim 1, characterized in that: The upper end of the guide tube (8) is connected to the lower end of the central tube (5), and the lower end of the guide tube (8) is connected to the umbrella-shaped adjustable flow device (6) through the second gas collecting cover (17). The outer wall of the guide tube (8) is covered with a spring (18), and the spring sleeve (19) is between the spring (18) and the upper cylinder (15). A pad (20) is provided between the spring (18) and the upper end of the guide tube (8).

9. The umbrella-shaped adjustable flow spiral separation sand control downhole choke according to claim 1, characterized in that: The spiral separation and sand control device (7) comprises a sand control cylinder (701), a spiral blade (702), an upper sand control cylinder cover (703) and a lower sand control cylinder cover (704); the upper sand control cylinder cover (703) and the lower sand control cylinder cover (704) are respectively connected to the upper and lower ends of the sand control cylinder (701) through threads, the upper end of the spiral blade (702) is threadedly connected to the upper sand control cylinder cover (703) and passes through the middle of the sand control cylinder (701), the upper sand control cylinder cover (703) of the spiral separation and sand control device (7) is connected to the core cylinder (602) of the umbrella-shaped adjustable flow device (6) through a threaded connection gas collecting cover (9), and the entire spiral separation and sand control device (7) passes through the lower cylinder (16).

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