A vortex device for any position in an oil pipe

Abstract

The present invention relates to the technical field of gas well drainage and gas production, and in particular to a vortex flow device for use at any position within an oil pipe, comprising: a delivery mechanism comprising a delivery head, a spiral, a connector, a support, a central pipe, and a base; a limiting mechanism comprising a cone, a protective sleeve, a fixing sleeve, and a seating unit, wherein the seating unit comprises a limiting body, a slip hanger, a slip hanger limiting sleeve, and slips; the limiting body is sleeved on the upper exterior of the central pipe, with its upper portion inserted into the gap between the support body and the slip hanger, and its lower portion connected to a locking ring; the upper portion of the slip hanger is connected to the outer side of the slip hanger limiting sleeve, and its middle portion is connected to the fixing ring; the slip hanger limiting sleeve is sleeved on the outer side of the support body and connected to the outer side of the slip hanger limiting sleeve; the upper portion of the slip is inserted into an internal groove of the slip hanger, and its lower portion is inserted into an inclined groove of the cone. The present invention achieves seating by anchoring the slips to the inner wall of the oil pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of gas well drainage and gas production, and in particular to an eddy current device at any position in an oil pipe. Background Art

[0002] In the middle and late stages of gas reservoir development, reservoir pressure gradually decreases and gas well water production gradually increases, making it difficult for the gas flow to carry the bottomhole produced water to the surface. This results in liquid accumulation at the bottom of the well. This liquid accumulation in the gas well increases the bottomhole backpressure, leading to a decrease in gas well production. In severe cases, it can even crush the gas well and cause production to stop. Vortex drainage gas production technology is currently an important means to improve the timeliness of gas well opening and the degree of gas reservoir recovery. The basic principle is to use vortex equipment to change the flow state of the gas-liquid two-phase fluid medium in the gas well, transforming the original turbulent or laminar flow into a vortex rising annular film flow. This allows the gas to better carry liquid during the ascent, thereby improving the liquid-carrying capacity of the gas well and achieving effective drainage and gas production.

[0003] Currently, eddy current tools are widely used in conventional oil pipes. The ends of the oil pipes and couplings are connected with pipe buckles. After the oil pipes are connected through the couplings, a certain gap is left between the adjacent oil pipe end faces. The eddy current tool uses a spring clamp to clamp this gap, achieving stable seating. However, existing eddy current tools are not suitable for gas wells completed with airtight oil pipes. The airtight oil pipes and their couplings use special airtight buckles at both ends. When the oil pipe male buckle is connected to the coupling female buckle, the end faces of the two will fit tightly together to achieve auxiliary sealing. At this time, because the inner diameter of the oil pipe is consistent with the inner diameter of the coupling, there is no gap between the oil pipe and the coupling, and between the oil pipes and the oil pipes. The eddy current tool cannot be seated in the pipe string and cannot perform its own function.

[0004] In view of the above situation, there is an urgent need for an eddy current device at any position in the oil pipe, which can achieve positioning at any position in the oil pipe without relying on the gap of the coupling and meet the application requirements of conventional oil pipes and airtight oil pipes. Summary of the Invention

[0005] To this end, the present invention provides an eddy current device at any position in the oil pipe to overcome the problem that the eddy current tool in the prior art is not suitable for gas wells completed with airtight oil pipes and needs to rely on the gap of the coupling for seating.

[0006] To achieve the above object, the present invention provides an eddy current device at any position in an oil pipe, comprising:

[0007] A delivery mechanism, used to penetrate into the oil pipe of a gas well and assist the gas inside the oil pipe in carrying produced water from the bottom of the gas well to the surface, comprises a delivery head, a spiral, a connector, a support body, a central pipe, and a base, connected in sequence from top to bottom; the lower end of the delivery head is inserted into the upper part of the spiral, and the delivery head and the spiral are fixedly connected by a delivery pin; the lower end of the spiral is fixedly connected to the upper part of the connector, the lower end of the connector is fixedly connected to the upper part of the support body, the lower end of the support body is sleeved on the upper part of the central pipe and fixedly connected to the central pipe, and the base is fixedly connected to the central pipe;

[0008] The limiting mechanism is used to realize the initial anchoring and seating of the eddy current device at any position in the oil pipe, including a cone, a protective sleeve, a fixing sleeve and a seating unit;

[0009] The upper fixed sleeve of the seat card unit is arranged at the lower end of the support body; the lower end of the cone is fixedly connected to the protective sleeve, and the protective sleeve and the fixed sleeve are screwed.

[0010] Furthermore, the seat card unit includes a limiting body, a slip hanger, a slip hanger limiting sleeve and a slip;

[0011] The limiting body is sleeved on the outer side of the upper side of the central tube, the upper part of the limiting body is inserted into the gap between the support body and the slip hanger, and the lower part of the limiting body is fixedly connected to the locking ring;

[0012] The upper portion of the slip hanger is fixedly connected to the outer side of the slip hanger limit sleeve, and the middle portion of the slip hanger is fixedly connected to the fixing ring;

[0013] The slip hanging limit sleeve is arranged on the outside of the support body, and the slip hanging is fixedly connected to the outside of the slip hanging limit sleeve;

[0014] The upper part of the slip is inserted into the inner groove of the slip hanger, and the lower part of the slip is inserted into the cone chute.

[0015] Furthermore, the support body includes an inner support body and an outer support body, which are used to cooperate with the elastic claws to achieve seating and locking;

[0016] The inner support body is sleeved on the lower end of the connector and fixedly connected by shear pins;

[0017] The outer support body is sleeved outside the inner support body.

[0018] Furthermore, a connecting sleeve is provided on the outer side of the upper portion of the outer support body and the outer side of the connector, and a connecting ring is provided near the outer side of the upper portion of the connector, and the connecting sleeve and the connecting ring are fixedly connected.

[0019] Furthermore, an elastic claw is provided on the inner side of the upper portion of the limiting body. When the lower portion of the outer support body is inserted into the elastic claw, the card unit is in a first state. When the outer support body is lifted up so that the lower portion of the outer support body is separated from the elastic claw, the card unit is in a second state.

[0020] In the first state, the limiting body moves downward, and at the same time, the limiting body pushes the slips to move along the outer inclined surface of the cone close to the inner wall of the oil pipe;

[0021] In the second state, the slip hanger moves upward and separates from the limiting body, and drives the slip upward to move along the outer inclined surface of the cone toward the side away from the inner wall of the oil pipe.

[0022] Furthermore, a raised spiral blade is provided on the outer side of one end of the spiral body close to the delivery head, so as to make the mixed fluid flow in a vortex after passing through the spiral blade, thereby achieving gas-liquid separation.

[0023] Furthermore, a guide hole is provided at the lower portion of the spiral body, so as to allow the mixed fluid to flow from the guide hole to the upper portion of the vortex device through the internal channels of the connector, the inner support body, the central tube and the base.

[0024] Furthermore, the outer sleeve of the limiting body is provided with a cone, a rubber sleeve and a protective sleeve;

[0025] Wherein, the cone is located above the rubber sleeve and the protective sleeve, and the protective sleeve is arranged outside the rubber sleeve to maintain the original shape of the rubber sleeve.

[0026] Furthermore, it also includes a detection component, which is arranged inside the spiral body corresponding to the spiral blade and is used to detect pressure information and temperature information of the mixed fluid.

[0027] Compared with the existing technology, the beneficial effect of the present invention lies in that the seating and locking unit is designed to realize the seating and locking of the eddy current equipment by anchoring the slips on the inner wall of the oil pipe. No coupling gap is required, and positioning at any position in the oil pipe can be achieved. The seating and unlocking operations are simple, safe and reliable, and can be used in conventional oil pipes and airtight oil pipes.

[0028] Furthermore, the locking unit of the present invention utilizes a mechanical locking principle to achieve locking and unlocking. During the locking process, a rapid lowering and emergency stop operation is performed, utilizing inertia to propel the connecting ring, connecting sleeve, and outer support body downward, ultimately causing the slips to move along the outer slope of the cone toward the inner wall of the tubing, achieving initial anchoring. Subsequently, the eddy current device is lifted by a steel wire, allowing the slips to continue moving along the outer slope of the cone toward the inner wall of the tubing, completing the anchoring process without relying on coupling clearance. Unlocking is achieved by shearing and unsealing pins, making operation convenient and flexible, and helping to improve the locking effect of the eddy current tool.

[0029] Furthermore, the eddy current device of the present invention is provided with a detection component, which is arranged inside the spiral body corresponding to the spiral blade to detect the pressure information and temperature information of the mixed fluid. The pressure and temperature information of the mixed fluid provides a scientific basis for subsequent eddy current structure optimization and process parameter design. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural diagram of the eddy current device at any position in the oil pipe of the present invention;

[0031] Figure 2 This is a structural diagram of a position limiting body according to an embodiment of the present invention;

[0032] Figure 3 For the present invention Figure 2 Cross-sectional view at AA in the middle;

[0033] In the figure: 1, delivery head; 2, delivery pin; 3, spiral body; 4, connector; 5, connecting ring; 6, connecting sleeve; 7, shear pin; 8, inner support body; 9, outer support body; 10, center tube; 11, slip hanging limit sleeve; 12, slip hanging; 13, fixing ring; 14, unsealing pin; 15, limit body; 16, slip; 17, cone; 18, rubber sleeve; 19, protective sleeve; 20, locking ring; 21, fixing sleeve; 22, base; 23, detection component; 24, spiral blade; 25, guide hole; 26, elastic claw. DETAILED DESCRIPTION

[0034] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0036] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0037] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0038] See also Figure 1 As shown, Figure 1 : This is a structural diagram of an eddy current device at any position in an oil pipe according to the present invention. Specifically, the present invention provides an eddy current device at any position in an oil pipe, comprising:

[0039] The delivery mechanism is used to penetrate into the oil pipe of the gas well and assist the gas inside the oil pipe to carry the produced water from the bottom of the gas well to the surface. It includes a delivery head 1, a spiral body 3, a connector 4, a support body and a central pipe 10, and a base 22 connected in sequence from top to bottom. The lower end of the delivery head 1 is inserted into the upper part of the spiral body 3 and is fixedly connected to the delivery head 1 and the spiral body 3 by a delivery pin 2. The lower end of the spiral body 3 is fixedly connected to the upper part of the connector 4. The lower end of the connector 4 is fixedly connected to the upper part of the support body. The lower end of the support body is sleeved on the upper part of the central pipe 10 and fixedly connected to the central pipe 10. In addition, the base 22 is fixedly connected to the central pipe 10.

[0040] The limiting mechanism is used to achieve preliminary anchoring and locking of the eddy current device at any position in the oil pipe, including a cone 17, a protective sleeve 19, a fixing sleeve 21 and a locking unit;

[0041] The upper part of the seat card unit is fixedly sleeved at the lower end of the support body; the lower end of the cone 17 is fixedly connected to the protective sleeve 19, and the protective sleeve 19 and the fixed sleeve 21 are screwed.

[0042] Specifically, the seat card unit includes a limiting body 15, a slip hanger 12, a slip hanger limiting sleeve 11 and a slip 16;

[0043] The limiting body 15 is sleeved on the outer side of the upper side of the central tube 10, the upper part of the limiting body 15 is inserted into the gap between the support body and the slip hanger 12, and the lower part of the limiting body 15 is fixedly connected to the lock ring 20;

[0044] The upper portion of the slip hanger 12 is fixedly connected to the outer side of the slip hanger limiting sleeve 11, and the middle portion of the slip hanger 12 is fixedly connected to the fixing ring 13;

[0045] The slip hanging limiting sleeve 11 is sleeved on the outside of the support body, and the slip hanging 12 is fixedly connected to the outside of the slip hanging limiting sleeve 11;

[0046] The upper portion of the slip 16 is inserted into the inner groove of the slip hanger 12 , and the lower portion of the slip 16 is inserted into the inclined groove of the cone 17 .

[0047] It is understood that the slip hanger limit sleeve 11 can limit the movement range of the slip hanger 12, ensuring that the slip hanger 12 can interact with the slips 16 to achieve seating. At the same time, the lower portion of the limiter 15 is fixedly connected to the locking ring 20 to achieve a locking effect, ensuring that the slips 16 are in an anchored state after seating.

[0048] The present invention designs a seating unit, which realizes the seating of the eddy current equipment by anchoring the slips 16 on the inner wall of the oil pipe. No coupling gap is required, and positioning at any position in the oil pipe can be achieved. The seating and unlocking operations are simple, safe and reliable, and can be used in conventional oil pipes and airtight oil pipes.

[0049] Specifically, the support body includes an inner support body 8 and an outer support body 9, which are used to cooperate with the elastic claws 26 to achieve seating and locking;

[0050] The inner support body 8 is sleeved on the lower end of the connector 4 and is fixedly connected by shear pins 7;

[0051] The outer support body 9 is sleeved on the outside of the inner support body 8, and a connecting sleeve 6 is sleeved on the outer side of the upper part of the outer support body 9 and the outer side of the connecting body 4. A connecting ring 5 is sleeved near the outer side of the upper part of the connecting body 4, and the connecting sleeve 6 and the connecting ring 5 are fixedly connected.

[0052] See also Figures 2 and 3 , Figure 2 This is a structural diagram of the limiter 15 according to an embodiment of the present invention. Figure 3 For the present invention Figure 2 Cross-sectional view at AA in the middle. Specifically, an elastic claw 26 is provided on the inner side of the upper portion of the limiting body 15. When the lower portion of the outer support body 9 is inserted into the elastic claw 26, the seat card unit is in the first state. When the outer support body 9 is lifted so that the lower portion of the outer support body 9 is separated from the elastic claw 26, the seat card unit is in the second state.

[0053] In the first state, the limiting body 15 moves downward, and at the same time, the limiting body 15 pushes the slips 16 to move along the outer inclined surface of the cone 17 close to the inner wall of the oil pipe;

[0054] In the second state, the slip hanger 12 moves upward and separates from the limiting body 15 , and drives the slip 16 upward to move along the outer inclined surface of the cone 17 toward the side away from the inner wall of the oil pipe.

[0055] It can be understood that the elastic claw 26 can shrink inward when subjected to external force. During the process of lowering and anchoring the eddy current equipment, the lower part of the outer support body 9 is inserted into the elastic claw 26, and the elastic claw 26 cannot shrink inward, and the sitting card unit is in the first state (the limit body 15 moves downward, and at the same time, the limit body 15 pushes the cava 16 to move along the outer inclined surface of the cone 17 toward the side close to the inner wall of the oil pipe); when the eddy current equipment is removed, by lifting the outer support body 9, the lower part of the outer support body 9 is separated from the elastic claw 26, and the elastic claw 26 loses its internal support, and the sitting card unit is in the second state (the cava hanger 12 moves upward and separates from the limit body 15, and drives the cava 16 upward to move along the outer inclined surface of the cone 17 away from the inner wall of the oil pipe).

[0056] The locking unit of the present invention uses a mechanical locking principle to achieve locking and unlocking. During the locking process, a rapid lowering and emergency stop operation is performed, utilizing inertia to push the connecting ring 5, connecting sleeve 6, outer support body 9, and other components downward, ultimately causing the slips 16 to move along the outer inclined surface of the cone 17 toward the inner wall of the oil pipe, achieving initial anchoring of the slips 16. Subsequently, the eddy current device is lifted by a steel wire, allowing the slips 16 to continue moving along the outer inclined surface of the cone 17 toward the inner wall of the oil pipe to complete the anchoring, without relying on the clearance between the couplings. Unlocking is simultaneously achieved by shearing the shear pin 7 and the unlocking pin 14, making operation convenient and flexible, and helping to improve the locking effect of the eddy current tool.

[0057] Specifically, a raised spiral blade 24 in a spiral ascending shape is provided on the outer side of one end of the spiral body 3 close to the delivery head 1 , so as to make the mixed fluid swirl after passing through the spiral blade 24 , thereby achieving gas-liquid separation.

[0058] In practice, the spiral angle of the spiral blade 24 can be determined according to actual conditions, which will not be elaborated here. As long as the vortex structure of the mixed fluid passing through the spiral body 3 during the lifting process of the vortex device can be stabilized, it will not be elaborated here.

[0059] Specifically, a guide hole 25 is provided at the lower portion of the spiral body 3 to allow the mixed fluid to flow from the guide hole 25 to the upper portion of the vortex device through the internal channels of the connector 4, the inner support body 8, the central tube 10 and the base 22.

[0060] Specifically, the outer cover of the limiting body 15 is provided with a cone 17, a rubber cover 18 and a protective cover 19;

[0061] The cone 17 is located above the rubber sleeve 18 and the protective sleeve 19 , and the protective sleeve 19 is sleeved on the outside of the rubber sleeve 18 to maintain the original shape of the rubber sleeve 18 .

[0062] As you can understand, the rubber sleeve 18 has a certain degree of elasticity and may expand or deform when subjected to external compression. When the eddy current device is anchored and pulled out, the rubber sleeve 18 may deform due to pressure. The protective sleeve 19 limits this expansion or deformation, ensuring that the rubber sleeve 18 maintains its original shape over time. The design of the protective sleeve 19 also ensures that the rubber sleeve 18 operates stably during the eddy current device installation process, preventing it from being affected by external forces such as rough tubing walls and eddy current device vibration.

[0063] In practice, the inner diameter of the rubber sleeve 18 is not specifically limited, as long as it can provide a certain friction force to ensure that the eddy current equipment will not get stuck prematurely due to collision or friction with the oil pipe wall during the lowering process. No further details will be given here.

[0064] Specifically, it also includes a detection component, which is arranged inside the spiral body corresponding to the spiral blade and is used to detect pressure information and temperature information of the mixed fluid.

[0065] In implementation, the detection component is a pressure sensor and a temperature sensor. The pressure sensor is used to detect the pressure information of the mixed fluid, and the temperature sensor is used to monitor the temperature information of the mixed fluid. The detection component is not specifically limited here and can be determined according to actual conditions, so it will not be repeated here.

[0066] The eddy current device of the present invention is provided with a detection component, which is arranged inside the spiral body corresponding to the spiral blade to detect the pressure information and temperature information of the mixed fluid. The pressure and temperature information of the mixed fluid provides a scientific basis for subsequent eddy current structure optimization and process parameter design.

[0067] Working process:

[0068] When gas reservoir exploitation is carried out, a steel wire carrying delivery tool and an eddy current device at any position in the oil pipe are lowered into the gas well. When the eddy current device approaches the predetermined position, it is quickly lowered and stopped. Under the action of inertia, the connecting ring 5 moves downward and pushes the connecting sleeve 6 downward. The connecting sleeve 6 moves downward and drives the outer support body 9 downward. When the connecting sleeve 6 moves downward to the vicinity of the slip hanger limit sleeve 11, the lower part of the outer support body 9 is inserted into the elastic claw 26, and the elastic claw 26 cannot shrink inward. At this time, the connecting sleeve 6 pushes the slip hanger limit sleeve 11 to move downward, and the slip hanger limit sleeve 11 pushes the slip hanger 12, the fixing ring 13, the unsealing pin 14, and the limit body 15 to move downward together. The limit body 15 pushes the slip 16 to move along the outer inclined surface of the cone 17 close to the inner wall of the oil pipe. The slip 16 is initially anchored after it fits against the inner wall of the oil pipe. Then, the eddy current device is lifted by the steel wire, and the delivery head 1, spiral body 3, connector 4, inner support body 8, center tube 10, protective sleeve 19, fixed sleeve 21 and base 22 move upward together. The protective sleeve 19 moves upward and pushes the cone 17 upward at the same time. The slips 16 continue to move along the outer inclined surface of the cone 17 toward the inner wall of the oil pipe until the slips 16 are tightly fitted to the inner wall of the oil pipe, completing the anchoring process.

[0069] When it is necessary to pull out the eddy current device, a steel wire is used to carry the salvage tool into the gas well. When the salvage tool reaches the position of the eddy current device, it is connected to the salvage head and then vibrated upward to cut the shear pin 7 connecting the inner support body 8 and the connector 4. The spiral body 3 and the connector 4 move upward. Then, the upward vibration is applied again to cut the unsealing pin 14 of the slip hanger 12 and the fixing ring 13. The connector 4 moves upward to drive the connecting ring 5 to move upward. The connecting ring 5 moves upward to drive the connecting sleeve 6 to move upward. The connecting sleeve 6 moves upward and drives the outer support body 9 to move upward at the same time. The support body 9 moves upward and separates from the elastic claw 26, causing the elastic claw 26 to lose its internal support, and drives the fixed ring 13 to move upward. After the fixed ring 13 moves upward and contacts the slip hanger limit sleeve 11, it drives the slip hanger limit sleeve 11 and the slip hanger 12 to move upward. The slip hanger 12 moves upward and separates from the limit body 15, and drives the slip 16 upward along the outer inclined surface of the cone 17 toward the side away from the inner wall of the oil pipe, so that the slip 16 is separated from the sitting position and the anchor is released. Finally, the eddy current equipment is salvaged by lifting the steel wire and the eddy current equipment is lifted out of the ground.

[0070] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A vortex device at any position in an oil pipe, characterized in that: include: A delivery mechanism, used to penetrate into the oil pipe of a gas well and assist the gas inside the oil pipe in carrying produced water from the bottom of the gas well to the surface, comprises a delivery head, a spiral, a connector, a support body, a central pipe, and a base, connected in sequence from top to bottom; the lower end of the delivery head is inserted into the upper part of the spiral, and the delivery head and the spiral are fixedly connected by a delivery pin; the lower end of the spiral is fixedly connected to the upper part of the connector, the lower end of the connector is fixedly connected to the upper part of the support body, the lower end of the support body is sleeved on the upper part of the central pipe and fixedly connected to the central pipe, and the base is fixedly connected to the central pipe; The limiting mechanism is used to realize the initial anchoring and seating of the eddy current device at any position in the oil pipe, including a cone, a protective sleeve, a fixing sleeve and a seating unit; The upper fixed sleeve of the seat card unit is arranged at the lower end of the support body; the lower end of the cone is fixedly connected to the protective sleeve, and the protective sleeve and the fixed sleeve are screwed; The seat clamp unit includes a limiter, a slip hanger, a slip hanger limiter sleeve and slips; The limiting body is sleeved on the outer portion of the upper side of the central tube, the upper portion of the limiting body is inserted into the gap between the support body and the slip hanger, and the lower portion of the limiting body is fixedly connected to the locking ring; The upper portion of the slip hanger is fixedly connected to the outer side of the slip hanger limit sleeve, and the middle portion of the slip hanger is fixedly connected to the fixing ring; The slip hanging limiting sleeve is arranged on the outside of the support body, and the slip hanging is fixedly connected to the outside of the slip hanging limiting sleeve; The upper part of the slip is inserted into the inner groove of the slip hanger, and the lower part of the slip is inserted into the cone chute; The support body includes an inner support body and an outer support body, which are used to cooperate with the elastic claws to achieve seating and locking; The inner support body is sleeved on the lower end of the connector and fixedly connected by shear pins, and the outer support body is sleeved on the outside of the inner support body; The outer side of the upper portion of the outer support body and the outer side of the connector are provided with connecting sleeves; A connecting ring is sleeved near the outer side of the upper part of the connecting body, and the connecting sleeve and the connecting ring are fixedly connected.

2. The eddy current device at any position in the oil pipe according to claim 1, characterized in that: An elastic claw is provided on the inner side of the upper part of the limiting body. When the lower part of the outer support body is inserted into the elastic claw, the sitting card unit is in the first state. When the outer support body is lifted up to make the lower part of the outer support body detach from the elastic claw, the sitting card unit is in the second state.

3. The eddy current device at any position in the oil pipe according to claim 2, characterized in that: The first state is that the limiting body moves downward, and at the same time the limiting body pushes the slips to move along the outer inclined surface of the cone close to the inner wall of the oil pipe.

4. The eddy current device at any position in the oil pipe according to claim 2, characterized in that: The second state is that the slip hanger moves upward and separates from the limiter, and drives the slip upward to move along the outer inclined surface of the cone toward the side away from the inner wall of the oil pipe.

5. The eddy current device at any position in the oil pipe according to claim 1, characterized in that: A raised spiral blade in a spiral ascending shape is provided on the outer side of one end of the spiral body close to the delivery head, so as to make the mixed fluid swirl after passing through the spiral blade to achieve gas-liquid separation.

6. The eddy current device at any position in the oil pipe according to claim 5, characterized in that: A guide hole is provided at the lower part of the spiral body, so as to allow the mixed fluid to flow from the guide hole to the upper part of the vortex device through the internal channels of the connector, the inner support body, the central tube and the base.

7. The eddy current device at any position in the oil pipe according to claim 1, characterized in that: The outer sleeve of the limiter is provided with a cone, a rubber sleeve and a protective sleeve; Wherein, the cone is located above the rubber sleeve and the protective sleeve, and the protective sleeve is arranged outside the rubber sleeve to maintain the original shape of the rubber sleeve.

8. The eddy current device at any position in the oil pipe according to claim 5, characterized in that: It also includes a detection component, which is arranged on the inner side of the spiral body corresponding to the spiral blade and is used to detect pressure information and temperature information of the mixed fluid.

Images