Downhole operation well washing auxiliary device

Abstract

The utility model relates to a well washing auxiliary device for borehole operation, which belongs to the technical field of well washing equipment and comprises a dosing pipeline, the dosing pipeline comprises a main pipeline and a mixing pipeline, a Venturi tube is connected in parallel on the main pipeline, a dosing tube is fixed on the Venturi tube, a dosing box is fixed on the top of the dosing tube, and a plurality of medicament liquid storage bins are fixed on the top of the dosing box. A spiral plate is arranged in one end of the mixing pipeline, and a turbulence plate is arranged in the other end of the mixing pipeline. The chemical liquid in the chemical liquid storage bins is preliminarily mixed in the chemical adding box, then sucked into the Venturi tube to be mixed with water from a water injection pipe of a well washing vehicle, and conveyed into the mixing pipeline, kinetic energy is converted into rotating power for mixing, the mixing effect of the material liquid is effectively improved, then rotating vortex impacts on the spoiler, and the mixing effect of the material liquid is effectively improved. The well flushing fluid is subjected to turbulent flow dispersion mixing through the turbulent flow holes, and then is subjected to turbulent flow dispersion mixing when passing through the turbulent flow holes in the turbulent flow plate, so that the medicament is more uniformly distributed in the well flushing fluid, and the well flushing effect is improved.

Description

Technical Field

[0001] This utility model relates to an auxiliary device for well washing in downhole operations, belonging to the technical field of well washing equipment. Background Technology

[0002] In well cleaning operations at oil wells, adding chemical agents is a key method to improve the cleaning effect. Traditional methods of adding chemicals have many drawbacks. The accuracy of chemical addition is difficult to guarantee; when adding chemicals manually, the dosage is significantly affected by factors such as worker experience and fatigue. For example, when adding corrosion inhibitors, insufficient dosage cannot effectively protect equipment inside the well, while excessive dosage leads to waste and potential environmental pollution. Currently, there is also an auxiliary device for well cleaning operations at oil wells. This device connects a main pipeline to the water injection pipe of the well cleaning truck. This main pipeline connects multiple chemical addition pipes and tanks, allowing for quantitative delivery and improved dosage accuracy. However, the chemicals cannot be well mixed after being added to the main pipeline, resulting in dispersed distribution of the chemicals in the cleaning fluid. Some areas have excessively high or low concentrations of chemicals, severely affecting the cleaning effect. Utility Model Content

[0003] This utility model provides a downhole well washing auxiliary device to solve the problems mentioned in the background art.

[0004] This utility model relates to a well-washing auxiliary device for downhole operations, including a chemical dosing pipe connected to the water injection pipe of a well-washing truck via a flange. The chemical dosing pipe includes a main pipe and a mixing pipe connected to the outlet end of the main pipe via a flange. A Venturi tube is connected in parallel to the main pipe. A transparent chemical dosing tube is fixed to the top of the throat of the Venturi tube. A chemical dosing tank is fixed to the top of the chemical dosing tube. Multiple chemical storage tanks are fixed to the top of the chemical dosing tank. An outlet pipe connected to the chemical dosing tank is provided at the bottom of the chemical storage tank. A regulating valve is provided on the section of the main pipe connected in parallel with the Venturi tube. A flow meter and a regulating valve are provided on the outlet pipe. A spiral plate is provided inside the mixing pipe at the end near the main pipe. A turbulence plate is provided inside the mixing pipe at the end away from the main pipe. Turbulence holes are provided on the turbulence plate. An inclined baffle plate is provided inside the mixing pipe between the turbulence plate and the spiral plate. Baffle holes are evenly distributed on the baffle plate.

[0005] As a preferred embodiment, the mixing pipe has a support cylinder one inside the end closest to the main pipe, with the spiral plate and the baffle plate fixed in the inner hole of the support cylinder one. The mixing pipe has a support cylinder two inside the end furthest from the main pipe, with the baffle plate fixed in the inner hole of the support cylinder two. Both the outer ends of the support cylinder one and the support cylinder two are provided with support flanges. The flanges at both ends of the mixing pipe are provided with support grooves that cooperate with the support flanges, which can facilitate the disassembly of the mixing pipe and the removal of the support cylinder one and the support cylinder two for cleaning the spiral plate, the baffle plate and the baffle plate.

[0006] As a preferred embodiment, there are at least two turbulence plates, and the turbulence holes on adjacent turbulence plates are staggered to increase the turbulence dispersion and mixing effect. The diameter of the turbulence holes on multiple turbulence plates gradually decreases from one end away from the main pipe to the other end to increase the mixing effect.

[0007] As a preferred embodiment, a sealing ring is provided on the flange outside the support groove, the turbulence hole is a conical hole, and the inner end of the second support cylinder is flared.

[0008] As a preferred option, a flushing branch pipe is fixed at the inlet end of the main pipeline, and a flushing ring pipe is fixed at the top of the dosing tank. The bottom of the flushing ring pipe is evenly provided with multiple inclined spray holes facing the inner wall of the dosing tank, which can guide some liquid into the dosing tank to flush the inner wall and better prevent chemical residue.

[0009] As a preferred option, a tee is provided on both ends of the main pipeline of the regulating valve, and the two ends of the venturi tube are respectively installed on the top outlet of the tee, which facilitates the installation of the venturi tube.

[0010] As a preferred embodiment, pipe supports are fixed at both ends of the main pipe, and brackets are fixed at the bottom of the pipe supports. Support legs are fixed at the bottom of the outer side of the dosing tank and are fixed to the brackets.

[0011] As a preferred embodiment, adjusting nuts are fixed at the four corners of the bottom of the bracket, and adjusting screws are connected to the internal threads of the adjusting nuts. The bottom of the bracket is provided with mounting holes for the adjusting screws to pass through, and a pad is fixed to the bottom of the adjusting screws, which can easily adjust the height of the bracket, thereby better supporting the dosing pipeline.

[0012] This utility model has the following beneficial effects:

[0013] The chemical solutions stored in multiple chemical storage tanks are quantitatively delivered to the dosing tank for initial mixing. Then, they are drawn into the venturi tube and mixed with water from the well washing truck's water injection pipe. The mixture is then delivered to the mixing pipe, where kinetic energy is converted into rotational mixing power, effectively improving the mixing effect of the solution. The rotating vortex then impacts the baffle plate, and the mixture is dispersed and mixed through the baffle holes. It is then dispersed and mixed through the turbulent holes on the turbulent plate, resulting in a more uniform distribution of the chemical solution in the well washing fluid and improving the well washing effect. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] The structures, proportions, sizes, etc. disclosed in this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 for Figure 1 Partial structural diagram Figure 1 ;

[0018] Figure 3 for Figure 1 Partial structural diagram Figure 2 ;

[0019] In the diagram: 1. Water injection pipe of the well washing truck; 2. Support; 3. Regulating valve one; 4. Main pipe; 5. Chemical dosing pipe; 6. Flushing ring pipe; 7. Chemical dosing tank; 8. Discharge pipe; 9. Chemical storage tank; 10. Venturi tube; 11. T-joint; 12. Flushing branch pipe; 13. Pipe support; 14. Support cylinder one; 15. Mixing pipe; 16. Support flange; 17. Sealing ring; 18. Support cylinder two; 19. Turbulence orifice; 20. Turbulence plate; 21. Baffle plate; 22. Spiral plate; 23. Spray hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1, as Figures 1 to 3As shown, this utility model is a well-washing auxiliary device for downhole operations, including a chemical dosing pipe connected to the water injection pipe 1 of the well-washing truck via a flange. The chemical dosing pipe includes a main pipe 4 and a mixing pipe 15 connected to the outlet end of the main pipe 4 via a flange. A Venturi tube 10 is connected in parallel to the main pipe 4. A transparent chemical dosing pipe 5 is fixed to the top of the throat of the Venturi tube 10. A chemical dosing tank 7 is fixed to the top of the chemical dosing pipe 5. Multiple chemical storage tanks 9 are fixed to the top of the chemical dosing tank 7. The bottom of the chemical storage tanks 9 is provided with... The main pipe 4, which is connected to the dosing tank 7 via an outlet pipe 8 and a venturi tube 10, is equipped with a regulating valve 3. The outlet pipe 8 is equipped with a flow meter and a regulating valve 2. The mixing pipe 15 is equipped with a spiral plate 22 at the end near the main pipe 4 and a turbulence plate 20 at the end away from the main pipe 4. The turbulence plate 20 is equipped with turbulence holes 19. The mixing pipe 15 between the turbulence plate 20 and the spiral plate 22 is equipped with an inclined baffle plate 21. The baffle plate 21 is evenly equipped with baffle holes.

[0022] During use, the well-washing truck's water injection pipe 1 delivers the well-washing fluid from left to right. Various liquid agents are placed in the agent storage tank 9, and the regulating valves 2 on each outlet pipe 8 are adjusted according to the flow meter to regulate the injection volume. Then, the regulating valve 3 is slowly closed. The venturi tube 10 generates suction at the dosing pipe 5, drawing the pre-mixed liquid from the dosing tank 7 into the venturi tube 10, which then flows into the mixing pipe 15. Kinetic energy is converted into rotational mixing power, effectively improving the mixing effect of the liquid. The rotating vortex then impacts the baffle plate 21, undergoing turbulent dispersion and mixing through the baffle holes, and then further turbulent dispersion and mixing through the turbulent holes on the turbulent plate 19. The liquid and well-washing fluid are evenly mixed and then transported into the well-washing truck's water injection pipe 1 on the right side.

[0023] In Example 2, based on Example 1, a support cylinder 14 is provided inside the mixing pipe 15 near the main pipe 4. The spiral plate 22 and the baffle plate 21 are fixed in the inner hole of the support cylinder 14. A support cylinder 28 is provided inside the mixing pipe 15 away from the main pipe 4. The turbulence plate 20 is fixed in the inner hole of the support cylinder 28. The outer ends of both the support cylinder 14 and the support cylinder 28 are provided with support flanges 16. The flanges at both ends of the mixing pipe 15 are provided with support grooves that mate with the support flanges 16. When it is necessary to clean the spiral plate 22, the baffle plate 21, and the turbulence plate 20, loosen the bolts on the flanges at both ends of the mixing pipe 15, then remove the mixing pipe 15, and then the support cylinder 14 and the support cylinder 28 can be removed for cleaning.

[0024] There are at least two turbulence plates 20, and the turbulence holes 19 on adjacent turbulence plates 20 are staggered. The diameter of the turbulence holes 19 on multiple turbulence plates 20 gradually decreases from one end away from the main pipe 4 to the other end.

[0025] A sealing ring 17 is provided on the flange outside the support groove, the turbulence hole 19 is a conical hole, and the inner end of the support cylinder 18 is flared.

[0026] A flushing branch pipe 12 is fixed to the inlet end of the main pipeline 4, and a flushing ring pipe 6 is fixed to the top of the dosing tank 7. Multiple inclined spray holes 23 facing the inner wall of the dosing tank 7 are evenly distributed at the bottom of the flushing ring pipe 6. During dosing, the opening of the valve on the flushing branch pipe 12 can be adjusted to regulate the amount of liquid entering the dosing tank 7, ensuring that the incoming liquid flushes the inner wall of the dosing tank 7 and preventing insufficient dosage from hindering the entry of the drug into the venturi tube 10. Furthermore, the liquid sprayed from the nozzles 23 can promote the mixing of various drugs.

[0027] Both ends of the regulating valve 3 are equipped with tee pipes 11 on the main pipes 4, and the two ends of the venturi pipe 10 are respectively installed on the top outlet of the tee pipe 11.

[0028] The two ends of the main pipe 4 are fixed with pipe supports 13, the bottom of the pipe supports 13 is fixed with brackets 2, and the bottom of the outside of the dosing tank 7 is fixed with legs, which are fixed on the brackets 2.

[0029] Adjusting nuts are fixed at the four corners of the bottom of bracket 2. Adjusting nuts are internally threaded with adjusting screws. The bottom of bracket 2 has mounting holes for the adjusting screws to pass through, and a pad is fixed to the bottom of the adjusting screw. After the chemical dosing pipeline is fixed to the water injection pipe 1 of the well washing truck via a flange connection, the adjusting screw can be rotated to adjust the height of the pad, so that the pad is supported on the ground.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0031] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A well-washing auxiliary device for downhole operations, comprising a chemical dosing pipe connected to the water injection pipe (1) of a well-washing truck via a flange, characterized in that: The dosing pipeline includes a main pipeline (4) and a mixing pipeline (15) connected to the outlet end of the main pipeline (4) via a flange. A venturi tube (10) is connected in parallel to the main pipeline (4). A transparent dosing tube (5) is fixed at the top of the throat of the venturi tube (10). A dosing tank (7) is fixed at the top of the dosing tube (5). Multiple drug storage tanks (9) are fixed at the top of the dosing tank (7). An outlet pipe (8) connecting the dosing tank (7) is provided at the bottom of the drug storage tank (9). A section of the venturi tube (10) is connected in parallel. The main pipe (4) is equipped with regulating valve 1 (3), the outlet pipe (8) is equipped with flow meter and regulating valve 2, the mixing pipe (15) is equipped with spiral plate (22) at the end close to the main pipe (4), the mixing pipe (15) is equipped with turbulence plate (20) at the end away from the main pipe (4), the turbulence plate (20) is equipped with turbulence hole (19), the mixing pipe (15) between the turbulence plate (20) and the spiral plate (22) is equipped with inclined baffle plate (21), the baffle plate (21) is evenly equipped with baffle hole.

2. The downhole well washing auxiliary device according to claim 1, characterized in that: The mixing pipe (15) has a support cylinder (14) inside the end closest to the main pipe (4), and the spiral plate (22) and the baffle plate (21) are fixed in the inner hole of the support cylinder (14). The mixing pipe (15) has a support cylinder (28) inside the end away from the main pipe (4), and the baffle plate (20) is fixed in the inner hole of the support cylinder (28). The outer ends of the support cylinder (14) and the support cylinder (28) are provided with support flanges (16). The flanges at both ends of the mixing pipe (15) are provided with support grooves that cooperate with the support flanges (16).

3. The downhole well washing auxiliary device according to claim 2, characterized in that: There are at least two turbulence plates (20), and the turbulence holes (19) on adjacent turbulence plates (20) are staggered. The diameter of the turbulence holes (19) on multiple turbulence plates (20) gradually decreases from one end away from the main pipe (4) to the other end.

4. The downhole well washing auxiliary device according to claim 3, characterized in that: A sealing ring (17) is provided on the flange outside the support groove, the turbulence hole (19) is a conical hole, and the inner end of the support cylinder (18) is flared.

5. The downhole well washing auxiliary device according to claim 1, characterized in that: A flushing branch pipe (12) is fixed at the inlet end of the main pipeline (4), and a flushing ring pipe (6) is fixed at the top of the dosing tank (7). Multiple inclined spray holes (23) facing the inner wall of the dosing tank (7) are evenly provided at the bottom of the flushing ring pipe (6).

6. The downhole well washing auxiliary device according to claim 1, characterized in that: Both ends of the regulating valve (3) are equipped with tee pipes (11), and the two ends of the venturi pipe (10) are respectively installed on the top outlet of the tee pipe (11).

7. The downhole well washing auxiliary device according to claim 1, characterized in that: The two ends of the main pipe (4) are fixed with pipe supports (13), the bottom of the pipe supports (13) is fixed with brackets (2), and the bottom of the dosing tank (7) is fixed with legs, which are fixed on the brackets (2).

8. The downhole well washing auxiliary device according to claim 7, characterized in that: Adjusting nuts are fixed at the four corners of the bottom of the bracket (2). The adjusting nuts are connected to adjusting screws by internal threads. The bottom of the bracket (2) is provided with mounting holes for the adjusting screws to pass through. A pad is fixed at the bottom of the adjusting screws.

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