Adjustable underground fixed paraffin control device

Abstract

The utility model relates to the technical field of adjustable underground fixed paraffin control devices, and discloses an adjustable underground fixed paraffin control device which comprises a first barrel. According to the adjustable underground fixed paraffin control device, through the arrangement of a telescopic assembly and a sealing assembly, when the adjustable underground fixed paraffin control device is used, a first barrel is moved to adjust the distance between the first barrel and a second barrel, the first barrel moves to drive a telescopic barrel and a fixed block A to move, at the moment, a lead screw is screwed, and the lead screw penetrates through a fixed block B and the fixed block A; the length of the paraffin control device can be adjusted by fixing the distance between the first cylinder body and the second cylinder body, after the distance between the first cylinder body and the second cylinder body is fixed, the inflatable sealing ring is inflated through the air valve, and the inflatable sealing ring expands to seal the gap between the telescopic pipe and the second cylinder body. And oil liquid is prevented from leaking from the gap between the telescopic pipe and the second barrel body, so that the paraffin control device can adapt to oil wells with different depths, and the applicability of the paraffin control device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of adjustable downhole fixed wax preventers, and in particular to an adjustable downhole fixed wax preventer. Background Technology

[0002] During the extraction of oil and natural gas, due to changes in the underground environment, especially changes in temperature and pressure, oil and gas flow is often accompanied by the deposition of wax, a phenomenon known as "wax blockage". This wax blockage can lead to a decrease in pipeline flow or even complete blockage of the pipeline, seriously affecting production efficiency and increasing production costs.

[0003] An adjustable downhole fixed wax preventer is a device used in oil wells. Its main purpose is to prevent wax deposition in the wellbore, thereby reducing the frequency of wax blockage and wax removal, and improving the production efficiency of the oil well. The background technology of this device involves the wax deposition problem in oil well production, and various wax prevention technologies developed to solve this problem.

[0004] When using current downhole fixed wax inhibitors, excessively long wax inhibitors may cause unnecessary resistance in shallow oil wells, affecting the smoothness of oil flow, while excessively short wax inhibitors may not be able to completely cover the wax-forming area in deeper oil wells, thus affecting the wax-prevention effect. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide an adjustable downhole fixed wax preventer, which solves the problems mentioned in the background art, such as excessively long wax preventers in shallow oil wells may cause unnecessary resistance and affect the smoothness of oil flow, and excessively short wax preventers in deep oil wells may not be able to completely cover the wax-forming area, thus affecting the wax prevention effect.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an adjustable downhole fixed wax inhibitor, comprising a first cylinder, a telescopic component fixedly connected to the surface of the first cylinder, a telescopic cylinder fixedly connected to one end of the first cylinder, a sealing component slidably connected to the surface of the telescopic cylinder, a second cylinder fixedly connected to the surface of the sealing component, a protective cylinder threadedly connected to the interior of the second cylinder, a flow regulating component fixedly connected to the interior of the protective cylinder, the telescopic component comprising a fixed block A fixedly connected to the upper side of the first cylinder, a lead screw threadedly connected to the interior of the fixed block A, a fixed block B threadedly connected to the surface of the lead screw, the sealing component comprising an inflatable sealing ring slidably connected to the surface of the telescopic cylinder, an air valve provided on one side of the inflatable sealing ring, and the flow regulating component comprising a first sealing ring fixedly connected to the interior of the protective cylinder, a rotary valve rotatably connected to the inner surface of the first sealing ring, and a limit block fixedly connected to one end of the rotary valve.

[0009] As a further embodiment of this utility model, a placement groove is provided inside the second cylinder, and the inflatable sealing ring is fixedly connected inside the placement groove. The placement groove serves to fix and connect the inflatable sealing ring.

[0010] As a further embodiment of this utility model, a sealing gasket is overlapped and connected to one side of the protective cylinder, and an anti-wax mesh is provided inside the protective cylinder. The anti-wax mesh serves to hold the anti-wax agent.

[0011] As a further embodiment of this utility model, a second sealing ring is connected to the other side of the protective cylinder, and a lower connector is connected to the internal thread of the protective cylinder. The sealing ring enhances the sealing effect.

[0012] As a further embodiment of this utility model, an O-ring is connected to the other end of the first cylinder, and an upper connector is threaded onto the surface of the first cylinder. The O-ring enhances the sealing effect.

[0013] As a further embodiment of this utility model, one end of the lower connector is fixedly connected to a compression fitting, and one end of the compression fitting is provided with an oil pipe. The compression fitting serves to connect the oil pipe.

[0014] As a further embodiment of this utility model, the fixing block B is fixedly connected to the surface of the second cylinder, and the surface of the protective cylinder is fixedly connected with a boss, which serves to fix the first sealing ring.

[0015] (III) Beneficial Effects

[0016] This utility model provides an adjustable downhole fixed wax preventer, which has the following beneficial effects:

[0017] 1. This adjustable downhole fixed wax preventer, through the setting of telescopic components and sealing components, allows for adjustment of the distance between the first and second cylinders by moving the first cylinder during use. The movement of the first cylinder drives the telescopic cylinder and fixed block A to move. At this time, the screw is turned, passing through fixed block B and fixed block A, to fix the distance between the first and second cylinders, thus adjusting the length of the wax preventer. After fixing the distance between the first and second cylinders, the air valve is used to inflate the air sealing ring. The expansion of the air sealing ring seals the gap between the telescopic pipe and the second cylinder, preventing oil leakage from the gap between the telescopic pipe and the second cylinder. This allows the wax preventer to adapt to oil wells of different depths, improving its applicability.

[0018] 2. This adjustable downhole fixed wax preventer, through the setting of the flow adjustment component, when in use, rotates the rotary valve, the rotation of the rotary valve drives the limit block to rotate, the rotation of the limit block can adjust the opening of the protective cylinder diameter, thereby adjusting the flow rate of oil entering the wax preventer. In addition, it can be adjusted according to the temperature, pressure and crude oil properties of different oil layers to ensure that the wax preventer can play its best role under various conditions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the telescopic component structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the sealing assembly structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the flow regulation component of this utility model;

[0023] Figure 5 This is a schematic diagram of the upper connector structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the anti-wax mesh structure of this utility model.

[0025] In the diagram: 1. First cylinder; 2. Telescopic assembly; 201. Fixing block A; 202. Lead screw; 203. Fixing block B; 3. Telescopic cylinder; 4. Sealing assembly; 401. Inflatable sealing ring; 402. Air valve; 5. Second cylinder; 6. Protective cylinder; 7. Flow regulating assembly; 701. First sealing ring; 702. Rotary valve; 703. Limiting block; 8. Sealing gasket; 9. Anti-wax mesh; 10. Second sealing ring; 11. Lower connector; 12. O-ring; 13. Upper connector; 14. Compression fitting connector; 15. Oil pipe; 16. Boss. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 1 to 6 This utility model provides a technical solution: an adjustable downhole fixed wax preventer, comprising a first cylinder 1, a telescopic component 2 fixedly connected to the surface of the first cylinder 1, a telescopic cylinder 3 fixedly connected to one end of the first cylinder 1, and a sealing component 4 slidably connected to the surface of the telescopic cylinder 3. Through the arrangement of the telescopic component 2 and the sealing component 4, the wax preventer can adapt to oil wells of different depths during use, improving its applicability. A second cylinder 5 is fixedly connected to the surface of the sealing component 4, and a protective cylinder 6 is threadedly connected inside the second cylinder 5. A flow regulating component 7 is fixedly connected inside the protective cylinder 6. Through the arrangement of the flow regulating component 7, during use, the flow can be adjusted... The system can be adjusted according to the temperature, pressure and crude oil properties of different oil layers to ensure that the anti-wax device can play its best role under various conditions. The telescopic component 2 includes a fixed block A201 fixedly connected to the upper side of the first cylinder 1. The fixed block A201 is internally threaded with a screw rod 202, and the surface of the screw rod 202 is threaded with a fixed block B203. The sealing component 4 includes an inflatable sealing ring 401 slidably connected to the surface of the telescopic cylinder 3. An air valve 402 is provided on one side of the inflatable sealing ring 401. The flow regulating component 7 includes a first sealing ring 701 fixedly connected to the inside of the protective cylinder 6. A rotary valve 702 is rotatably connected to the inner surface of the first sealing ring 701. One end of the rotary valve 702 is fixedly connected to a limit block 703.

[0028] The second cylinder 5 has a placement groove inside, and the inflatable sealing ring 401 is fixedly connected inside the placement groove. The placement groove serves to fix the inflatable sealing ring 401.

[0029] One side of the protective cylinder 6 is connected to the sealing gasket 8. The inside of the protective cylinder 6 is provided with an anti-wax mesh 9, which serves to hold the anti-wax agent.

[0030] The other side of the protective cylinder 6 is connected with a second sealing ring 10, and the internal thread of the protective cylinder 6 is connected with a lower connector 11. The second sealing ring 10 enhances the sealing effect.

[0031] The other end of the first cylinder 1 is connected with an O-ring 12, and the surface of the first cylinder 1 is threaded with an upper connector 13. The O-ring 12 enhances the sealing effect.

[0032] One end of the lower connector 11 is fixedly connected to a compression fitting 14, and one end of the compression fitting 14 is provided with an oil pipe 15. The compression fitting 14 serves to connect the oil pipe 15.

[0033] The fixing block B203 is fixedly connected to the surface of the second cylinder 5, and the surface of the protective cylinder 6 is fixedly connected to the boss 16. The boss 16 serves to fix the first sealing ring 701.

[0034] In this invention, the working steps of the device are as follows:

[0035] First step: Move the first cylinder 1 to adjust the distance between the first cylinder 1 and the second cylinder 5. The movement of the first cylinder 1 drives the telescopic cylinder 3 and the fixed block A201 to move. At this time, turn the screw 202. The screw 202 passes through the fixed block B203 and the fixed block A201 to fix the distance between the first cylinder 1 and the second cylinder 5. The length of the anti-wax device can then be adjusted. After fixing the distance between the first cylinder 1 and the second cylinder 5, inflate the air sealing ring 401 through the air valve 402. The expansion of the air sealing ring 401 seals the gap between the telescopic cylinder 3 and the second cylinder 5.

[0036] The second step: Rotate the rotary valve 702. The rotation of the rotary valve 702 drives the limit block 703 to rotate. The rotation of the limit block 703 can adjust the opening of the protective cylinder 6, thereby adjusting the flow rate of oil entering the anti-wax device. It should be noted that the equipment structure and drawings of this utility model mainly describe the principle of this utility model. In terms of the technical principle of this design, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, those skilled in the art can clearly understand the specific details of its power mechanism, power supply system and control system, provided they understand the principle of the above utility model. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0037] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable downhole fixed wax inhibitor, comprising a first cylinder (1), characterized in that: A telescopic assembly (2) is fixedly connected to the surface of the first cylinder (1), a telescopic cylinder (3) is fixedly connected to one end of the first cylinder (1), a sealing assembly (4) is slidably connected to the surface of the telescopic cylinder (3), a second cylinder (5) is fixedly connected to the surface of the sealing assembly (4), a protective cylinder (6) is threadedly connected to the inside of the second cylinder (5), and a flow regulating assembly (7) is fixedly connected to the inside of the protective cylinder (6). The telescopic assembly (2) includes a fixed block A (201) fixedly connected to the upper side of the first cylinder (1), the fixed block A (201) is internally threaded with a lead screw (202), and the lead screw (202) is surfacely threaded with a fixed block B (203). The sealing assembly (4) includes an inflatable sealing ring (401) that is slidably connected to the surface of the telescopic cylinder (3), and an air valve (402) is provided on one side of the inflatable sealing ring (401). The flow regulating component (7) includes a first sealing ring (701) fixedly connected inside the protective cylinder (6), and a rotary valve (702) is rotatably connected to the inner surface of the first sealing ring (701). One end of the rotary valve (702) is fixedly connected to a limit block (703).

2. The adjustable downhole fixed wax inhibitor according to claim 1, characterized in that: The second cylinder (5) has a placement groove inside, and the inflatable sealing ring (401) is fixedly connected to the inside of the placement groove.

3. An adjustable downhole fixed wax inhibitor according to claim 1, characterized in that: One side of the protective cylinder (6) is connected to a sealing gasket (8), and the inside of the protective cylinder (6) is provided with an anti-wax mesh (9).

4. An adjustable downhole fixed wax inhibitor according to claim 1, characterized in that: The other side of the protective cylinder (6) is connected to a second sealing ring (10), and the inner thread of the protective cylinder (6) is connected to a lower connector (11).

5. An adjustable downhole fixed wax inhibitor according to claim 1, characterized in that: The other end of the first cylinder (1) is connected with an O-ring (12), and the surface of the first cylinder (1) is threaded with an upper connector (13).

6. An adjustable downhole fixed wax inhibitor according to claim 4, characterized in that: One end of the lower connector (11) is fixedly connected to a compression fitting (14), and one end of the compression fitting (14) is provided with an oil pipe (15).

7. An adjustable downhole fixed wax inhibitor according to claim 1, characterized in that: The fixing block B (203) is fixedly connected to the surface of the second cylinder (5), and the surface of the protective cylinder (6) is fixedly connected to the boss (16).

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