CN220460470U

CN220460470U - Feeding device for production of microbubble workover fluid

Info

Publication number: CN220460470U
Application number: CN202321874413.3U
Authority: CN
Inventors: 金承平; 王泽东
Original assignee: Fluids Chem Co ltd
Current assignee: Fluids Chem Co ltd
Priority date: 2023-07-17
Filing date: 2023-07-17
Publication date: 2024-02-09
Anticipated expiration: 2033-07-17

Abstract

The utility model discloses a feeding device for producing microbubble workover fluid, which belongs to the technical field of microbubble workover fluid production, and comprises a workover fluid microbubble generating tank and a driving shaft rotatably arranged in the workover fluid microbubble generating tank, wherein a top cover is fixed at the top end of the workover fluid microbubble generating tank, a connecting pipe is fixedly arranged at the top end of the top cover, a high-pressure air tank is fixed through the connecting pipe, an air conveying cavity is arranged in the driving shaft, an air inlet hole communicated with the high-pressure air tank is formed in the top end of the driving shaft, an air outlet pipe is connected to the bottom end of the driving shaft, foam refining frames are fixed at two ends of the driving shaft, positioning holes are formed in the two sides of the inner wall of the foam refining frames at equal intervals, and a plurality of extrusion rods are arranged in the foam refining frames at equal intervals.

Description

Feeding device for production of microbubble workover fluid

Technical Field

The utility model belongs to the technical field of production of microbubble workover fluids, and particularly relates to a feeding device for production of a microbubble workover fluid.

Background

In the oil and gas exploration and development process, the oil and gas field is mined for a long time, the stratum energy deficiency is more and more serious, the stratum pressure coefficient is rapidly reduced, and the problem of leakage of well entering liquid has seriously affected the execution of well repairing operation measures.

At present, the well entering liquid mainly comprises active water and foam liquid during the low-pressure gas well workover operation, and the problems are that the active water is large in leakage amount, the stratum is greatly damaged, the operation complexity is increased, and the production effect is influenced; and secondly, although the foam liquid can reduce the pressure of a liquid column of a shaft, so that the stratum leakage is reduced, the particle size of the foam liquid is larger, the half life period is shorter, and the liquid phase in the well entering liquid can be quickly accumulated at the bottom of the shaft and leaked into the stratum only for a few hours.

In the construction of low-pressure gas well workover operation, according to the relevant technical requirements of foam workover, the workover fluid is required to be mixed with air (or nitrogen) to carry out low-density microbubble to form low-density microbubble workover fluid, however, the foam particle size that current foam workover fluid generating devices generally exist is great, uneven, so how to improve the foam workover fluid generating devices to miniaturize the foam particle size and reduce the foam fluid density, thereby meeting the technical requirements of low-pressure gas well workover operation, and becoming the technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

(1) Technical problem to be solved

Aiming at the defects of the prior art, the utility model aims to provide a feeding device for producing micro-bubble workover fluid, which aims to solve the technical problems of larger and uneven foam particle size commonly existing in the prior foam workover fluid generating device.

(2) Technical proposal

In order to solve the technical problems, the utility model provides the feeding device for producing the micro-bubble workover fluid, which comprises a workover fluid micro-bubble generating tank and a driving shaft rotatably arranged in the workover fluid micro-bubble generating tank, wherein a top cover is fixed at the top end of the workover fluid micro-bubble generating tank, a connecting pipe is fixedly arranged at the top end of the top cover, a high-pressure air tank is fixed through the connecting pipe, an air conveying cavity is arranged in the driving shaft, an air inlet hole communicated with the high-pressure air tank is formed in the top end of the driving shaft, an air outlet pipe is connected to the bottom end of the driving shaft, foam thinning frames are fixed at the two ends of the driving shaft, positioning holes are formed in the two sides of the inner wall of the foam thinning frames at equal intervals, a plurality of extrusion rods are arranged in the foam thinning frames at adjustable equal intervals, and the two ends of the extrusion rods are elastically spliced with positioning rods which are clamped with the positioning holes.

When the feeding device for producing the microbubble workover fluid is used, the driving shaft is rotatably arranged in the workover fluid microbubble generating tank and is communicated with the high-pressure air tank through the connecting pipe, air in the high-pressure air tank is discharged from the air outlet pipe along the connecting pipe and the air transmission channel, discharged air bubbles are separated through the mesh plate arranged on the air outlet pipe, and the mesh plate with different apertures is replaced to further adjust the size of bubbles produced by the microbubble workover fluid; through being fixed with the foam at the outer wall of drive shaft and refine the frame, the equidistant a plurality of squeeze bars that are provided with in the foam refines the frame, the motor is driving the drive shaft and the rotatory in-process of frame is refined to the foam, when the size of foam is greater than the interval between two squeeze bars, the squeeze bar is crowded broken with the foam, and then avoided producing the foam of macroparticle, the pulling locating lever makes it shift out from the locating hole, and shrink to in the squeeze bar, thereby the squeeze bar is dismantled from the foam refines the frame during, the elasticity of spring promotes locating lever and locating hole joint, thereby make the squeeze bar keep fixed, through the interval that the squeeze bar of installation different quantity is then adjusted between the squeeze bar, be convenient for extrude broken to the foam of equidimension, the foam of microbubble workover fluid has been promoted and has thinned the effect.

Preferably, the high-pressure air tank is inserted into the connecting pipe in a threaded manner, and the bottom end of the high-pressure air tank is provided with the electromagnetic valve.

Further, both ends of the side wall of the workover fluid microbubble generating tank are respectively fixed with a liquid inlet pipe and a liquid outlet pipe, and control valves are arranged on the liquid inlet pipe and the liquid outlet pipe.

Furthermore, a motor is fixedly arranged at the bottom end of the workover fluid microbubble generating tank, and a shaft of the motor is fixedly connected with the driving shaft.

Furthermore, the top end of the driving shaft is provided with a sealing bearing, and the driving shaft is rotationally inserted into the connecting pipe through the sealing bearing.

Furthermore, a one-way valve is embedded and fixed in the air outlet pipe, and a screen plate is inserted into the side wall of the air outlet pipe in a threaded manner.

Furthermore, a spring is embedded in the extrusion rod, and one end of the positioning rod extending out of the extrusion rod is connected in the positioning hole in an anastomotic manner.

(3) Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the driving shaft is rotatably arranged in the well repairing liquid microbubble generating tank, the driving shaft is communicated with the high-pressure air tank through the connecting pipe, air in the high-pressure air tank is discharged from the air outlet pipe along the connecting pipe and the air transmission channel, discharged air bubbles are separated through the mesh plates arranged on the air outlet pipe, and the sizes of bubbles produced by the microbubble well repairing liquid are adjusted by changing the mesh plates with different apertures.

2. Through being fixed with the foam at the outer wall of drive shaft and refine the frame, the equidistant a plurality of squeeze bars that are provided with in the foam refines the frame, the motor is driving the drive shaft and the rotatory in-process of frame is refined to the foam, when the size of foam is greater than the interval between two squeeze bars, the squeeze bar is crowded broken with the foam, and then avoided producing the foam of macroparticle, the pulling locating lever makes it shift out from the locating hole, and shrink to in the squeeze bar, thereby the squeeze bar is dismantled from the foam refines the frame during, the elasticity of spring promotes locating lever and locating hole joint, thereby make the squeeze bar keep fixed, through the interval that the squeeze bar of installation different quantity is then adjusted between the squeeze bar, be convenient for extrude broken to the foam of equidimension, the foam of microbubble workover fluid has been promoted and has thinned the effect.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of a well servicing fluid microbubble generating tank of the present utility model;

FIG. 3 is a schematic view of the disassembly structure of the air outlet pipe of the utility model;

fig. 4 is a schematic diagram of the split structure of the foam refining frame of the utility model.

The marks in the drawings are: 1. a well servicing fluid microbubble generating tank; 2. a motor; 3. a liquid outlet pipe; 4. a liquid inlet pipe; 5. a connecting pipe; 6. a high pressure air tank; 7. a top cover; 8. a drive shaft; 9. an air inlet hole; 10. a gas delivery cavity; 11. an air outlet pipe; 12. a foam thinning frame; 13. a one-way valve; 14. a screen plate; 15. positioning holes; 16. a positioning rod; 17. a spring; 18. and extruding the rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

This embodiment is a feeding device for microbubble workover fluid production, its structure schematic diagram is as shown in fig. 1, this feeding device for microbubble workover fluid production includes workover fluid microbubble formation jar 1 and rotates the drive shaft 8 that sets up in workover fluid microbubble formation jar 1, the top of workover fluid microbubble formation jar 1 is fixed with top cap 7, the top fixed mounting of top cap 7 has connecting pipe 5, and be fixed with highly-compressed air tank 6 through connecting pipe 5, be provided with gas-supply cavity 10 in drive shaft 8, the inlet port 9 that is linked together with highly-compressed air tank 6 has been seted up on the top of drive shaft 8, and the bottom of drive shaft 8 is connected with outlet duct 11, wherein the both ends of drive shaft 8 all are fixed with foam and refine frame 12, the equal interval in the inner wall both sides of foam refines frame 12 has locating hole 15, and the equidistance that is provided with a plurality of squeeze bars 18 in the foam refines frame 12, the both ends of squeeze bar 18 all elasticity peg graft have with locating lever 16 of locating hole 15 joint, drive shaft 8 is linked together with highly-compressed air tank 6 through connecting pipe 5, the highly-compressed air tank 6, the air in the highly-compressed air tank 6 follows connecting pipe 5 and the passageway, the air inlet duct 14 is gone out from outlet duct 11 and has the big bubble of the big air duct 14 that is changed with the big bubble that is blown out from the outlet duct 11 through the outlet duct 1, the big bubble that is not has the big hole that is adjusted.

The high-pressure air tank 6 is in threaded connection in the connecting pipe 5, the electromagnetic valve is installed at the bottom end of the high-pressure air tank 6, air in the high-pressure air tank 6 is discharged from the air outlet pipe 11 along the connecting pipe 5 and the air transmission channel after the electromagnetic valve is opened, the two ends of the side wall of the well repairing liquid microbubble generating tank 1 are respectively fixed with the liquid inlet pipe 4 and the liquid outlet pipe 3, the control valves are installed on the liquid inlet pipe 4 and the liquid outlet pipe 3, the well repairing liquid enters from the liquid inlet pipe 4 and then closes the control valves, so that the interior of the well repairing liquid microbubble generating tank 1 is in a sealed state, the pressure in the well repairing liquid microbubble generating tank 1 is improved along with the air entering in the high-pressure air tank 6, therefore, after the control valve on the liquid outlet pipe 3 is opened, the refined microbubble well repairing liquid is sprayed out from the liquid outlet pipe 3, the bottom end of the well repairing liquid microbubble generating tank 1 is fixedly provided with the motor 2, and the shaft of the motor 2 is fixedly connected with the driving shaft 8.

In addition, seal bearings are installed at the top ends of the driving shafts 8 and are rotationally inserted into the connecting pipes 5 through the seal bearings, one-way valves 13 are fixedly embedded in the air outlet pipes 11, the one-way valves 13 prevent liquid from flowing back into the air outlet pipes 11, the side walls of the air outlet pipes 11 are in threaded insertion with the net plates 14, after the net plates 14 are unscrewed from the air outlet pipes 11, the net plates 14 with different apertures are replaced, the size of bubbles produced by the microbubble workover fluid is adjusted, springs 17 are embedded in the extrusion rods 18, one ends of the positioning rods 16 extending out of the extrusion rods 18 are in fit insertion into the positioning holes 15, the positioning rods 16 are pulled to be moved out of the positioning holes 15 and retracted into the extrusion rods 18, so that the extrusion rods 18 are detached from the foam refinement frame 12 when the elastic force of the springs 17 pushes the positioning rods 16 to be clamped with the positioning holes 15, the extrusion rods 18 are kept fixed, and the spacing between the extrusion rods 18 is adjusted by installing different numbers of the extrusion rods 18.

The internal structure of the well workover fluid microbubble generating tank 1 of the feeding device for producing the microbubble well workover fluid is shown in fig. 2, the disassembly structure of the air outlet pipe 11 is shown in fig. 3, and the disassembly structure of the foam refining frame 12 is shown in fig. 4.

Working principle: the control valve is closed after the well repairing liquid enters from the liquid inlet pipe 4, so that the interior of the well repairing liquid microbubble generating tank 1 is in a sealed state, air in the high-pressure air tank 6 is discharged from the air outlet pipe 11 along the connecting pipe 5 and the air transmission channel, discharged air bubbles are separated through the screen 14 arranged on the air outlet pipe 11, the motor 2 drives the driving shaft 8 and the foam refining frame 12 to rotate, when the size of foam is larger than the interval between the two extrusion rods 18, the extrusion rods 18 extrude the foam into the air tank, and then large-particle foam is avoided, and the pressure in the well repairing liquid microbubble generating tank 1 is improved along with the air entering in the high-pressure air tank 6, so that the refined microbubble well repairing liquid is sprayed out from the liquid outlet pipe 3 under the influence of the pressure after the control valve on the liquid outlet pipe 3 is opened.

All technical features in the embodiment can be freely combined according to actual needs.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. This feeding device is used in microbubble workover fluid production, this feeding device is used in microbubble workover fluid production includes workover fluid microbubble formation jar (1) and rotates drive shaft (8) that set up in workover fluid microbubble formation jar (1), a serial communication port, the top of workover fluid microbubble formation jar (1) is fixed with top cap (7), top fixed mounting of top cap (7) has connecting pipe (5) to be fixed with highly-compressed air jar (6) through connecting pipe (5), be provided with gas transmission cavity (10) in drive shaft (8), the inlet port (9) that are linked together with highly-compressed air jar (6) are seted up on the top of drive shaft (8), and the bottom of drive shaft (8) is connected with outlet duct (11), and wherein both ends of drive shaft (8) all are fixed with foam and refine frame (12), the inner wall both sides of foam frame (12) are equal apart from having seted up locating hole (15), and refine adjustable equidistance in the foam frame (12) and be provided with a plurality of extrusion poles (18), the equal elasticity in both ends of extrusion pole (18) has peg graft with locating hole (16) of locating hole (15).

2. The feeding device for the production of the microbubble workover fluid according to claim 1, wherein the high-pressure air tank (6) is in threaded connection with the connecting pipe (5), and an electromagnetic valve is arranged at the bottom end of the high-pressure air tank (6).

3. The feeding device for producing the micro-bubble workover fluid according to claim 1, wherein a liquid inlet pipe (4) and a liquid outlet pipe (3) are respectively fixed at two ends of the side wall of the workover fluid micro-bubble generating tank (1), and control valves are arranged on the liquid inlet pipe (4) and the liquid outlet pipe (3).

4. A feeding device for producing a micro-bubble workover fluid according to claim 3, wherein a motor (2) is fixedly arranged at the bottom end of the workover fluid micro-bubble generating tank (1), and a shaft of the motor (2) is fixedly connected with a driving shaft (8).

5. The feeding device for the production of the microbubble workover fluid according to claim 1, wherein a sealing bearing is arranged at the top end of the driving shaft (8) and is rotationally inserted into the connecting pipe (5) through the sealing bearing.

6. The feeding device for producing the micro-bubble workover fluid according to claim 1, wherein a one-way valve (13) is fixedly embedded in the air outlet pipe (11), and a screen plate (14) is inserted into the side wall of the air outlet pipe (11) in a threaded manner.

7. The feeding device for producing the microbubble workover fluid according to claim 1, wherein a spring (17) is embedded in the extrusion rod (18), and one end of the positioning rod (16) extending out of the extrusion rod (18) is in fit connection with the positioning hole (15).