Jet drainage atomizer

Abstract

A jet liquid drainage atomizer is a technology for throttling, pressure control, drainage and gas recovery of natural gas in the production process of a natural gas well, and is structurally characterized in that a female buckle at the upper end of a sand prevention cover is connected with a male buckle at the lower end of a central pipe, and a packer is sleeved on the central pipe and arranged at the upper end of the sand prevention cover; the lower end and the upper end of the slip are connected with the wedge-shaped body and the slip seat through trapezoidal grooves and are sleeved on the central pipe; the locking ring is sleeved in an outer groove of the limiting sleeve; the locking block is arranged in a square hole in the upper part of the limiting sleeve; the limiting sleeve is arranged on an outer shoulder in the middle of the central pipe; the upper-end female buckle of the slip bowl is connected with the lower-end male buckle of the outer cover; between the central pipe and the outer cover, the sealing ring B is sleeved in a sealing groove in the middle of the salvage rotational flow body, and the release sleeve and the salvage rotational flow body are sleeved on the central pipe; a female buckle at the upper end of the release sleeve is connected with a male buckle at the lower end of the salvage cyclone body; an inner shoulder at the lower end of the release sleeve is embedded with an outer shoulder at the upper end of the limiting sleeve; the air tap is embedded in an upper-end inner hole of the central pipe; the sealing ring A is sleeved in the lower sealing groove of the core rod; and the upper female buckle of the central pipe is connected with the lower male buckle of the core rod.

Description

Technical Field

[0001] This utility model relates to a tool for throttling and controlling the pressure of natural gas and draining gas during the production process of natural gas wells, and in particular a jet-draining atomizer. Background Technology

[0002] Currently, downhole throttling technology is a key technology widely used in natural gas well production. This technology can effectively reduce the operating pressure of the surface pipeline network and lower the cost of natural gas extraction. In practical applications, various downhole throttling devices exist, most of which have a single function: pressure control and throttling. However, as the energy of the gas well decreases, especially in wells producing large amounts of water, the downhole throttling device can obstruct gas flow, reduce the gas's liquid-carrying capacity, cause liquid accumulation in the wellbore, and even lead to flooding, severely impacting gas well production and creating difficulties for drainage and gas extraction. I applied for a patent in 2014 entitled "Jet Drainage Atomizer" (patent number 201420106142.1), which met the production needs at the time. However, with the development of production technology, some problems have been discovered. Due to unreasonable design, the overall tooling is too long, resulting in poor maneuverability and even well jamming, causing trouble for subsequent work. Summary of the Invention

[0003] The purpose of this utility model is to provide a jet atomizer for throttling, pressure control, and drainage / gas extraction. It solves the problem that ordinary throttling devices cannot drain water and extract gas. This utility model is achieved as follows: it includes a sand shield, a central tube, a sealing element, a wedge, a slip, a slip seat, a limiting sleeve, a locking ring, a locking block, a release shear pin, a release sleeve, an outer cover, a nozzle, a sealing ring A, a sealing ring B, a retrieval vortex, a core rod, a cylindrical pin, and a release connector. The upper female buckle of the sand shield is connected to the lower male buckle of the central tube. The spacer is fitted onto the central tube and placed on the upper end of the sandproof cover; the upper part of the spacer is wedge-shaped. The upper and lower ends of the slip are connected to the wedge-shaped body and the slip seat via trapezoidal grooves and are fitted onto the central tube. Between the central tube and the slip seat, a locking ring is fitted into the outer groove of the limiting sleeve, and a locking block is placed in the upper square hole of the limiting sleeve, with its inner side embedded in the outer groove in the middle of the central tube. The limiting sleeve seat is located on the outer shoulder in the middle of the central tube. The upper female buckle of the slip seat is connected to the lower male buckle of the outer cover. Between the central tube and the outer cover, a sealing ring B... The release sleeve and the salva manipulator are fitted into the sealing groove in the middle of the salva manipulator, and are fitted onto the central tube. The female buckle at the upper end of the release sleeve is connected to the male buckle at the lower end of the salva manipulator, and the inner shoulder at the lower end of the release sleeve is engaged with the outer shoulder at the upper end of the limiting sleeve, and is fixed to the central tube by a release shear pin. The air nozzle is inserted into the inner hole at the upper end of the central tube. The sealing ring A is fitted into the sealing groove at the lower part of the core rod, and the core rod is placed inside the salva manipulator. The female buckle at the upper end of the central tube is connected to the male buckle at the lower end of the core rod. The upper end of the core rod is inserted into the lower part of the release connector and fixed by a cylindrical pin.

[0004] The sand shield has a female buckle at the upper end, an air intake channel with equal-divided slits in the middle, and a guide cone at the lower end. The female buckle at the upper end is compatible with the male buckle at the lower end of the central tube.

[0005] The salvage vortex has a salvage head at the top, with a spiral channel at the top and an inner and outer connecting groove at the bottom of the spiral channel. An outer sealing groove is provided at the bottom of the connecting groove, and an outer shoulder is provided at the bottom of the outer sealing groove. The inner and outer connecting groove is located at the bottom of the outer shoulder. A male buckle is provided at the bottom end of the salvage vortex, and the male buckle at the bottom end is compatible with the female buckle at the top end of the release sleeve.

[0006] The lower part of the core rod is provided with a waist groove, which is connected to the inner hole of the lower part of the core rod. The lower part of the waist groove is provided with an outer sealing groove, and the bottom end of the core rod has a groove.

[0007] The outer cover has a slit-type liquid inlet channel in the middle, and a one-way sawtooth thread on the lower inner side. The one-way sawtooth thread has an inner shoulder on the upper part, and the one-way sawtooth thread is compatible with the one-way sawtooth thread on the outer side of the locking ring.

[0008] The central tube has a female opening at its upper end and a male thread at its lower end; the central tube has an outer shoulder in its middle part and an outer groove on the outside of the middle part of the central tube, with the outer groove located above the outer shoulder; the central tube has an inner hole at its upper end.

[0009] The clasp has trapezoidal keys at both the top and bottom.

[0010] The outer side of the limiting sleeve is provided with a groove, and the top of the limiting sleeve is provided with a square hole, the size of which is adapted to the locking block.

[0011] The application method of this utility model is as follows: First, connect the jet-feeding atomizer to the well tool string. Using an instrument cart, lower the tool string into the gas well to the designed depth and then quickly lift it up. Under inertia, the outer cover and slips move downwards. The wedge-shaped structure of the slips causes them to open outwards and anchor to the tubing wall. Continue lifting the logging wireline, compressing the packer and ensuring it is in tight contact with the tubing wall. Simultaneously, the locking ring locks onto the outer cover, preventing the slips and packer from releasing. When the lifting logging wireline reaches a certain strength, the cylindrical pin on the release connector shears, releasing the device and completing the setting process of the jet-feeding atomizer. The jet-fluid atomizer is set at the designed depth. When unsealing the jet-fluid atomizer, a retrieval device is lowered. When the retrieval device is lowered to the jet-fluid atomizer, it automatically catches the retrieval head of the jet-fluid atomizer's swirling fluid using its own weight. The logging wire is then pulled up to cut the release pin. The release sleeve moves upward with the retrieval swirling fluid. When the release sleeve has moved a certain distance, the locking block disengages from the groove in the central tube. At the same time, the release sleeve moves upward through the shoulder, causing the outer cover, slip seat, limit sleeve, locking block, and locking ring to move together, thus recovering the slips and packer. The logging wire is then pulled up to complete the unsealing of the jet-fluid atomizer.

[0012] Natural gas is ejected through the nozzle. Due to the rapid contraction of the nozzle cross-section, the flow velocity of the natural gas increases rapidly, while the pressure decreases accordingly, forming a low-pressure zone at the nozzle outlet. The liquid in the well is drawn in through the inlet channel in the middle of the outer casing. It enters the inner hole of the lower part of the core rod along with the high-speed natural gas through the inner and outer connecting grooves of the lower part of the outer shoulder of the swirl fluid, the inner and outer connecting grooves of the upper part of the central tube, and the groove at the lower end of the core rod. In the inner hole, the two fluids with different velocities exchange momentum due to mutual collision. The velocity of the natural gas decreases, while the velocity of the liquid in the well increases. The natural gas and the liquid in the well mix, and the pressure becomes the same. The mixed fluid enters the inner and outer connecting grooves of the lower part of the spiral channel of the swirl fluid through the connecting groove of the core rod. As the volume gradually expands here, the velocity of the mixed fluid decreases and the pressure increases. Part of the kinetic energy of the mixed fluid is converted into pressure energy and discharged at a certain pressure.

[0013] When the mixed fluid output from the lower inner and outer connecting groove of the swirl channel of the salvage vortex fluid enters the swirl channel of the salvage vortex fluid, the spiral groove of the spiral channel causes the fluid to rotate rapidly, turning the fluid into an ordered vortex motion, reducing the friction between fluids, reducing shear force and pressure drop, and reducing the energy loss of disordered fluid.

[0014] The significance of this utility model is that the integrated design of the jet-fluid atomizer allows for continuous intake of accumulated liquid in the well using the jet principle. Through the action of the swirling fluid, the disordered turbulent flow is transformed into an ordered vortex, reducing energy loss of the disordered fluid and effectively improving the liquid drainage and lifting capacity of the gas well. This solves the problem that ordinary flow regulators cannot drain water for gas production. Due to its scientific and reasonable design and compact structure, the tooling is shortened, well jamming is eliminated, and funds are saved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the jet atomizer. In the diagram, 1 is a sand shield, 2 is a central tube, 3 is a sealing component, 4 is a wedge, 5 is a slip, 6 is a slip seat, 7 is a limiting sleeve, 8 is a locking ring, 9 is a locking block, 10 is a release shear pin, 11 is a release sleeve, 12 is an outer cover, 13 is an air nozzle, 14 is a sealing ring A, 15 is a sealing ring B, 16 is a retrieval vortex, 17 is a core rod, 18 is a cylindrical pin, and 19 is a release connector. Detailed Implementation

[0016] Example 1: This utility model includes a sand shield 1, a central tube 2, a sealing component 3, a wedge 4, a slip 5, a slip seat 6, a limiting sleeve 7, a locking ring 8, a locking block 9, a release shear pin 10, a release sleeve 11, an outer cover 12, an air nozzle 13, a sealing ring A 14, a sealing ring B 15, a salvage vortex fluid 16, a core rod 17, a cylindrical pin 18, and a release connector 19. The upper female buckle of the sandproof cover 1 is connected to the lower male buckle of the central tube 2. The sealing member 3 is sleeved on the central tube 2 and placed on the upper end of the sandproof cover 1. The upper part of the sealing member 3 is a wedge-shaped body 4. The upper and lower ends of the slip 5 are connected to the wedge-shaped body 4 and the slip seat 6 through trapezoidal grooves and are sleeved on the central tube 2. Between the central tube 2 and the slip seat 6, the locking ring 8 is sleeved in the outer groove of the limiting sleeve 7, and the locking block 9 is placed in the square hole at the upper part of the limiting sleeve 7. The inner side of the locking block 9 is embedded in the outer groove in the middle of the central tube 2. The limiting sleeve 7 is seated on the outer shoulder in the middle of the central tube 2. The upper female buckle of the slip seat 6 is connected to the lower male buckle of the outer cover 12. Between the central tube 2 and the outer cover 12, the sealing ring B is... 15 sleeves are installed in the sealing groove in the middle of the salvage vortex 16. Release sleeve 11 and salvage vortex 16 are installed on the central tube 2. The upper female buckle of release sleeve 11 is connected to the lower male buckle of salvage vortex 16. The lower inner shoulder of release sleeve 11 is embedded with the upper outer shoulder of limit sleeve 7 and fixed to the central tube 2 by release shear pin 10. The air nozzle 13 is inserted into the upper inner hole of the central tube 2. Sealing ring A 14 is installed in the sealing groove at the lower part of core rod 17. Core rod 17 is placed in salvage vortex 16. The upper female buckle of the central tube 2 is connected to the lower male buckle of core rod 17. The upper end of core rod 17 is inserted into the lower part of release connector 19 and fixed by cylindrical pin 18.

[0017] Example 2: The sand shield 1 has a female buckle at the upper end, an air inlet channel with equal-divided slits in the middle, and a guide cone at the lower end. The female buckle at the upper end is compatible with the male buckle at the lower end of the central tube 2.

[0018] Example 3: The salvage vortex 16 has a salvage head at the top, with a spiral channel at the top and an inner and outer connecting groove at the bottom of the spiral channel. An outer sealing groove is provided at the bottom of the connecting groove, and an outer shoulder is provided at the bottom of the outer sealing groove. The inner and outer connecting groove is located at the bottom of the outer shoulder. A male buckle is provided at the bottom end of the salvage vortex 16, and the male buckle at the bottom end is compatible with the female buckle at the top end of the release sleeve 11.

[0019] Example 4: The lower part of the core rod 17 is provided with a waist groove, which is connected to the lower inner hole of the core rod 17. An outer sealing groove is provided at the lower part of the waist groove, and the bottom end of the core rod 17 has a groove.

[0020] Example 5: The outer cover 12 is provided with a slit liquid inlet channel in the middle, and there is a one-way sawtooth thread on the lower inner side. The one-way sawtooth thread has an inner shoulder on the upper part, and the one-way sawtooth thread is adapted to the one-way sawtooth thread on the outer side of the locking ring 8.

[0021] Example 6: The outer end of the middle part of the central tube 2 is provided with a female opening and the lower end of the female opening is provided with a male opening; the middle part of the central tube 2 is provided with an outer shoulder and an outer groove, the outer groove being located above the outer shoulder; the upper end of the central tube 2 is provided with an inner hole.

[0022] Example 7: The upper and lower ends of the card 5 are provided with trapezoidal keys.

[0023] Example 8: The outer side of the limiting sleeve 7 is provided with a groove, and the top of the limiting sleeve 7 is provided with a square hole, the size of which is adapted to the locking block 9.

[0024] Example 9, Application Method of this Utility Model: First, connect the jet-feeding atomizer to the well tool string. Using an instrument cart, lower the tool string into the gas well to the designed depth and then quickly lift it up. Under inertia, the outer cover 12 and slips 6 move downwards. The wedge-shaped structure of the slips 5 causes them to open outwards and anchor to the tubing wall. Continue lifting the logging wire, compressing the packer 3, making it tightly contact the tubing wall. Simultaneously, the locking ring 8 locks onto the outer cover 12, preventing the slips 5 and packer 3 from releasing. When the lifting logging wire reaches a certain strength, the cylindrical pin 18 on the release connector 19 shears, releasing the device and completing the setting process of the jet-feeding atomizer. The jet-fluid atomizer is set at the designed depth. When unsealing the jet-fluid atomizer, a retrieval device is lowered. When the retrieval device is lowered to the jet-fluid atomizer, it automatically catches the retrieval head of the jet-fluid atomizer retrieval vortex 16 by its own weight. The logging wire is pulled up to cut the release shear pin 10. The release sleeve 11 moves upward with the retrieval vortex 16. When the release sleeve 11 moves a certain distance, the locking block 9 disengages from the groove of the central tube 2. At the same time, the release sleeve 11 drives the outer cover 12, the slip seat 6, the limit sleeve 7, the locking block 9, and the locking ring 8 to move upward together through the shoulder, so that the slip 5 and the packer 3 are retrieved. The logging wire is then pulled up to complete the unsealing of the jet-fluid atomizer.

[0025] Natural gas is ejected through nozzle 13. Due to the rapid contraction of the nozzle 13 cross-section, the flow velocity of the natural gas increases rapidly, while the pressure decreases accordingly, forming a low-pressure zone at the outlet of nozzle 13. The liquid in the well is drawn in through the inlet channel in the middle of the outer casing 12 and enters the inner hole of the lower part of the core rod 17 along with the high-speed natural gas through the inner and outer connecting grooves at the lower part of the outer shoulder of the swirl fluid 16, the upper inner and outer connecting grooves at the upper part of the central pipe 2, and the groove at the lower end of the core rod 17. In the inner hole, the two fluids with different velocities exchange momentum due to mutual collision. The velocity of the natural gas decreases, while the velocity of the liquid in the well increases. The natural gas and the liquid in the well mix, and the pressure becomes the same. The mixed fluid enters the inner and outer connecting grooves at the lower part of the spiral channel of the swirl fluid 16 through the connecting groove of the core rod 17. As the volume gradually expands here, the velocity of the mixed fluid decreases and the pressure increases. Part of the kinetic energy of the mixed fluid is converted into pressure energy and discharged at a certain pressure.

[0026] When the mixed fluid output from the lower inner and outer connecting groove of the spiral channel of the salvage vortex fluid 16 enters the spiral channel of the salvage vortex fluid 16, the spiral groove of the spiral channel causes the fluid to rotate rapidly, turning the fluid into an ordered vortex motion, reducing the friction between fluids, reducing shear force and pressure drop, and reducing the energy loss of disordered fluid.

Claims

1. A jet atomizer comprising a sand shield (1), a central tube (2), a sealing element (3), a wedge (4), a slip (5), a slip seat (6), a limiting sleeve (7), a locking ring (8), a locking block (9), a release shear pin (10), a release sleeve (11), an outer cover (12), an air nozzle (13), a sealing ring A (14), a sealing ring B (15), a retrieval vortex (16), a core rod (17), a cylindrical pin (18), and a release connector (19), wherein the sand shield (1) The upper female buckle is connected to the lower male buckle of the central tube (2). The sealing piece (3) is fitted onto the central tube (2) and placed on the upper end of the sandproof cover (1). The upper part of the sealing piece (3) is a wedge-shaped body (4). The upper and lower ends of the slip (5) are connected to the wedge-shaped body (4) and the slip seat (6) through trapezoidal grooves and fitted onto the central tube (2). Between the central tube (2) and the slip seat (6), the locking ring (8) is fitted into the outer groove of the limiting sleeve (7), and the locking block (9) is placed in the square hole at the upper part of the limiting sleeve (7). The inner side is embedded in the outer groove of the middle part of the central tube (2); the limiting sleeve (7) is seated on the outer shoulder of the middle part of the central tube (2); the upper female buckle of the slip seat (6) is connected to the lower male buckle of the outer cover (12); between the central tube (2) and the outer cover (12), the sealing ring B (15) is fitted in the sealing groove of the middle part of the salvage vortex (16), and the release sleeve (11) and the salvage vortex (16) are fitted on the central tube (2); the upper female buckle of the release sleeve (11) is connected to the lower male buckle of the salvage vortex (16), and the release sleeve (11) and the salvage vortex (16) are fitted on the central tube (2); the upper female buckle of the release sleeve (11) is connected to the lower male buckle of the salvage vortex (16), and the release sleeve (11) is connected to the outer groove of the outer cover (16). The inner shoulder of the lower end of the sleeve (11) is fitted into the outer shoulder of the upper end of the limiting sleeve (7) and fixed to the central tube (2) by the release shear pin (10); the air nozzle (13) is embedded in the inner hole of the upper end of the central tube (2); the sealing ring A (14) is fitted into the sealing groove of the lower part of the core rod (17), the core rod (17) is placed in the salvage vortex (16), the female buckle at the upper end of the central tube (2) is connected to the male buckle at the lower end of the core rod (17); the upper end of the core rod (17) is inserted into the lower part of the drop connector (19) and fixed by the cylindrical pin (18).

2. The jet-discharge atomizer according to claim 1, characterized in that: The sand shield (1) has a female buckle at the upper end, an air inlet channel with equal-divided slits in the middle, and a guide cone at the lower end. The female buckle at the upper end is compatible with the male buckle at the lower end of the central tube (2).

3. The jet-discharge atomizer according to claim 1, characterized in that: The salvage vortex (16) has a salvage head at the top, with a spiral channel at the top and an inner and outer connecting groove at the bottom of the spiral channel. An outer sealing groove is provided at the bottom of the connecting groove, and an outer shoulder is provided at the bottom of the outer sealing groove. An inner and outer connecting groove is provided at the bottom of the outer shoulder. A male buckle is provided at the bottom end of the salvage vortex (16), and the male buckle at the bottom end is compatible with the female buckle at the top end of the release sleeve (11).

4. The jet-discharge atomizer according to claim 1, characterized in that: The lower part of the core rod (17) is provided with a waist groove, which is connected to the lower inner hole of the core rod (17). An outer sealing groove is provided at the lower part of the waist groove, and the bottom end of the core rod (17) has a groove.

5. The jet-discharge atomizer according to claim 1, characterized in that: The outer cover (12) is provided with a slit liquid inlet channel in the middle, and there is a one-way sawtooth thread on the lower inner side of the slit. The one-way sawtooth thread has an inner shoulder on the upper part, and the one-way sawtooth thread is compatible with the one-way sawtooth thread on the outer side of the locking ring (8).

6. The jet-discharge atomizer according to claim 1, characterized in that: The central tube (2) has a female opening at the outer end of the middle part of the central tube and a male buckle at the lower end; the central tube (2) has an outer shoulder in the middle part and an outer groove in the middle part, the outer groove being located above the outer shoulder; the central tube (2) has an inner hole at the upper end.

7. The jet-discharge atomizer according to claim 1, characterized in that: The kava (5) has trapezoidal keys at both the top and bottom.

8. The jet-discharge atomizer according to claim 1, characterized in that: The limiting sleeve (7) has a groove on its outside and a square hole on its top, the size of which is adapted to the locking block (9).

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