Rapid dissolving device for polyacrylamide for fracturing

Abstract

The utility model discloses a rapid polyacrylamide dissolving device for fracturing. The rapid polyacrylamide dissolving device comprises a dissolving tank, the ventilation bubbling assembly is arranged at the bottom in the dissolving tank and connected with an external air compressor, and compressed air conveyed by the air compressor is discharged into the dissolving tank through the ventilation bubbling assembly; the inner wall of the middle area of the dissolving tank communicates with a plurality of air inlet pipes, the air inlet pipes obliquely extend upwards relative to the inner wall of the dissolving tank, and the air inlet pipes are connected with an external air pump so as to drive polyacrylamide powder to diffuse in the dissolving tank through the air inlet pipes; the dissolving device further comprises a liquid inlet and outlet assembly. According to the rapid polyacrylamide dissolving device for fracturing, the problems that polyacrylamide is dissolved slowly, and blocked polyacrylamide is not dissolved completely, so that a pipeline and a pump are blocked are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dissolving devices, in particular to a rapid dissolving device for polyacrylamide used for fracturing. Background Art

[0002] Polyacrylamide (PAM) is a water-soluble linear high molecular polymer with good flocculation properties. It can significantly reduce the frictional resistance of liquids and is widely used in water treatment, oil extraction and other fields.

[0003] Currently, polyacrylamide is used for large-scale, high-volume fracturing of tight oil and gas and shale oil and gas reservoirs in oil fields. The main products used are polymer emulsions, suspensory emulsions, and dry powders. Since dry powders do not require the compounding of other auxiliary ingredients, their production and transportation costs are significantly reduced, offering broad application prospects. However, their slow dissolution rate and tendency to agglomerate during dissolution are the major obstacles to their adoption as the primary polyacrylamide product.

[0004] Therefore, based on the above technical problems, technicians in this field urgently need to develop a rapid dissolution device for polyacrylamide for fracturing. Utility Model Content

[0005] The utility model aims to provide a rapid dissolving device for polyacrylamide used for fracturing, which solves the problems of slow dissolution of polyacrylamide and blockage of pipelines and pumps caused by incomplete dissolution of agglomerated polyacrylamide.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] The utility model discloses a rapid dissolving device for polyacrylamide for fracturing, which comprises:

[0008] A dissolving tank, wherein the upper end of the dissolving tank is a tank opening, and the tank opening is a feeding port for polyacrylamide;

[0009] A ventilation bubbling assembly is provided at the bottom of the dissolving tank, the ventilation bubbling assembly is connected to an external air compressor, and the compressed air delivered by the air compressor is discharged into the dissolving tank through the ventilation bubbling assembly;

[0010] The inner wall of the middle area of ​​the dissolving tank is connected to a plurality of air inlet pipes, the air inlet pipes extending upwardly and obliquely relative to the inner wall of the dissolving tank, and the air inlet pipes are connected to an external air pump to drive the polyacrylamide powder to diffuse into the interior of the dissolving tank through the air inlet pipes;

[0011] The dissolving device further comprises:

[0012] Liquid inlet and outlet components.

[0013] Furthermore, the dissolving tank comprises:

[0014] The lower tank body of the cylindrical structure is located at the bottom;

[0015] an upper tank body located at the upper end of the lower tank body and having an arc-shaped funnel-shaped structure; and

[0016] The tank opening is connected to the center position of the upper end of the upper tank body, and the tank opening is conical and has an open structure.

[0017] Furthermore, the ventilation bubble assembly includes:

[0018] A serpentine coil is arranged at the bottom of the dissolving tank, and a coil interface for connecting to the air compressor is reserved at the center of the serpentine coil; and

[0019] an air inlet pipe connecting the air compressor and the serpentine coil, wherein the air inlet pipe extends from the tank opening to the interior of the dissolving tank;

[0020] A plurality of air outlet holes are evenly arranged on the upper surface of the serpentine coil.

[0021] Furthermore, the four air inlet pipes are all arranged on the inner wall of the lower tank body close to one end of the upper tank body;

[0022] The angles between the four air inlet pipes and the horizontal line are 15°, 30°, 45° and 60° respectively.

[0023] Furthermore, an opening is provided on the upper surface of the air inlet pipe, and the opening is a long hole;

[0024] The opening extends from the pipe mouth of the air inlet pipe to the inner wall of the dissolving tank.

[0025] Furthermore, the width of the opening is 1 / 10 of the outer diameter of the air inlet pipe.

[0026] Furthermore, the four air inlet pipes are respectively connected to one of the air pumps.

[0027] Furthermore, the liquid inlet and outlet components include:

[0028] a liquid inlet pipe connected to one side of the lower portion of the lower tank body, wherein a liquid inlet pipe valve is installed on the liquid inlet pipe, and the liquid inlet pipe is connected to an external centrifugal pump; and

[0029] A liquid outlet pipe is connected to the other side of the lower portion of the lower tank body, and a liquid outlet pipe valve is installed on the liquid outlet pipe.

[0030] In the above technical solution, the utility model provides a rapid dissolution device for polyacrylamide for fracturing, which has the following beneficial effects:

[0031] The dissolving device of the utility model drives the water in the tank to a boiling state through the ventilation and bubbling component, forming turbulence and improving the dissolution rate of polyacrylamide; the fine polyacrylamide powder is diffused inside the tank through four air inlet pipes, reducing the falling rate of the polyacrylamide powder and improving the dispersion, so that it is dissolved as soon as it falls into the water, solving the problems of slow dissolution of polyacrylamide and blockage of pipelines and pumps caused by incompletely dissolved agglomerated polyacrylamide. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0033] Figure 1 This is a front view of a rapid dissolution device for polyacrylamide for fracturing disclosed in an embodiment of the present application;

[0034] Figure 2 A top view of a rapid dissolution device for polyacrylamide for fracturing disclosed in an embodiment of the present application;

[0035] Figure 3 A top view of a serpentine coil of a polyacrylamide rapid dissolution device for fracturing disclosed in an embodiment of the present application;

[0036] Figure 4 This is a top view of the air inlet pipe of a rapid dissolution device for polyacrylamide for fracturing disclosed in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 1. Dissolving tank; 2. Ventilation bubbling assembly; 3. Air inlet pipe;

[0039] 101, lower tank body; 102, upper tank body; 103, tank mouth;

[0040] 201, serpentine coil; 202, air compressor; 203, air inlet pipe; 204, air outlet;

[0041] 301. Open your mouth;

[0042] 401. Liquid inlet pipe; 402. Liquid inlet pipe valve; 403. Centrifugal pump; 404. Liquid outlet pipe; 405. Liquid outlet pipe valve. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] Referring to Figures 1 to 4 as shown in the drawings;

[0045] The embodiment discloses a polyacrylamide quick dissolving device for fracturing, which comprises a dissolving tank 1, a ventilation bubbling assembly 2 arranged at the bottom of the dissolving tank 1 and a plurality of air inlet pipes 3.

[0046] The upper end of the dissolving tank 1 is a tank opening 103, and the tank opening 103 is a feeding opening of the polyacrylamide.

[0047] The ventilation bubbling assembly 2 is connected with an external air compressor 202, and the compressed air delivered by the air compressor 202 is discharged into the dissolving tank 1 through the ventilation bubbling assembly 2.

[0048] The inner wall of the middle region of the dissolving tank 1 is communicated with a plurality of air inlet pipes 3, the air inlet pipes 3 extend upwardly and obliquely relative to the inner wall of the dissolving tank 1, and the air inlet pipes 3 are connected with an external air pump to drive the polyacrylamide powder to diffuse in the dissolving tank 1 through the air inlet pipes 3.

[0049] The dissolving device further comprises:

[0050] An in-out liquid assembly.

[0051] Specifically, the embodiment discloses a polyacrylamide quick dissolving device for fracturing, which comprises a dissolving tank 1, a ventilation bubbling assembly 2 and a plurality of air inlet pipes 3, and the lower part of the dissolving tank 1 is provided with an in-out liquid assembly for inputting and outputting water into and out of the dissolving tank 1. The ventilation bubbling assembly 2 of the embodiment is connected with an external air compressor 202 to deliver compressed gas to the lower part of the dissolving tank 1, so as to disturb the water body, form a turbulent flow and improve the dissolving efficiency. In addition, four air inlet pipes 3 are arranged on the inner wall of the dissolving tank 1, the air inlet pipes 3 extend upwardly and obliquely, and have an upward air blowing effect, so that the polyacrylamide powder entering through the tank opening 103 can be blown and diffused in the tank body, the blown powder can be quickly dissolved when meeting water, and the dissolving efficiency is further improved.

[0052] Preferably, the dissolving tank 1 of the embodiment comprises a lower tank body 101 in a cylindrical structure located at the lower part, an upper tank body 102 in an arc-shaped funnel structure located at the upper end of the lower tank body 101, and a tank opening 103 communicated with the center position of the upper end of the upper tank body 102, the tank opening 103 is in a conical cylinder shape, and the tank opening 103 is in an open structure.

[0053] Preferably, the ventilation bubbling assembly 2 of the embodiment comprises a serpentine coil pipe 201 arranged at the bottom of the dissolving tank 1, and the center position of the serpentine coil pipe 201 is reserved with a coil pipe interface connected with the air compressor 202; and an air inlet pipe 203 connected with the air compressor 202 and the serpentine coil pipe 201, the air inlet pipe 203 extends from the tank opening 103 to the inside of the dissolving tank 1; a plurality of air outlet holes 204 are uniformly arranged on the upper surface of the serpentine coil pipe 201.

[0054] The embodiment further defines the structure of the ventilation bubbling assembly 2, which comprises a serpentine coil pipe 201, an air inlet pipe 203 and an air compressor 202; the air compressor 202 is communicated with the serpentine coil pipe 201 through the air inlet pipe 203; one end of the serpentine coil pipe 201 is a coil pipe interface, which is a part communicated with the air inlet pipe 203; the other end of the serpentine coil pipe 201 is open, which is used for discharging gas; and the serpentine coil pipe 201 of the embodiment is provided with a plurality of air outlet holes 204, and compressed air is discharged from the air outlet holes 204 to water, so as to disturb the water to boil, to form a turbulent flow, and to further accelerate the dissolution efficiency of the polyacrylamide and water.

[0055] Preferably, the four air inlet pipes 3 of the embodiment are arranged on the inner wall of the lower tank body 101 close to one end of the upper tank body 102; and specifically, the included angles between the four air inlet pipes 3 and the horizontal line are 15°, 30°, 45° and 60°, respectively.

[0056] In order to avoid the accumulation of polyacrylamide powder on the surface of the air inlet pipe 3, the upper surface of the air inlet pipe 3 of the embodiment is provided with an opening 301, and the opening 301 is a long hole; the opening 301 extends from the pipe opening of the air inlet pipe 3 to the inner wall of the dissolution tank 1. The width of the opening 301 is 1 / 10 of the outer diameter of the air inlet pipe 3. The four air inlet pipes 3 are respectively connected with a gas pump. The four air inlet pipes 3 of the embodiment are respectively connected with a gas pump, and air is blown in through the gas pump, so that the polyacrylamide powder poured from the tank opening 103 diffuses in the tank body, reduces the falling speed of the polyacrylamide powder, improves the dispersibility, and makes the polyacrylamide powder fall into the water to be dissolved. The opening of the air inlet pipe 3 can blow off the polyacrylamide powder on the surface of the air inlet pipe 3.

[0057] Preferably, the inlet and outlet liquid assembly of the embodiment comprises an inlet liquid pipeline 401 connected to one side of the lower part of the lower tank body 101, an inlet liquid pipeline valve 402 mounted on the inlet liquid pipeline 401, and an external centrifugal pump 403 connected with the inlet liquid pipeline 401; and an outlet liquid pipeline 404 connected to the other side of the lower part of the lower tank body 101, and an outlet liquid pipeline valve 405 mounted on the outlet liquid pipeline 404.

[0058] In the above technical solution, the polyacrylamide rapid dissolution device for fracturing has the following beneficial effects:

[0059] The dissolution device drives the water in the tank to be in a boiling state through the ventilation bubbling assembly 2, forms a turbulent flow, and improves the dissolution rate of the polyacrylamide; the polyacrylamide fine powder diffuses in the tank body through the four air inlet pipes 3, reduces the falling speed of the polyacrylamide powder, improves the dispersibility, and makes the polyacrylamide powder fall into the water to be dissolved, thereby solving the problems of slow dissolution of polyacrylamide, incomplete dissolution of polyacrylamide, and blockage of pipelines and pumps caused by the agglomerated polyacrylamide.

[0060] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rapid dissolution device for polyacrylamide for fracturing, characterized in that: The dissolving device comprises: A dissolving tank (1), wherein the upper end of the dissolving tank (1) is a tank opening (103), and the tank opening (103) is a feeding port for polyacrylamide; a ventilation bubbling assembly (2) disposed at the bottom of the dissolving tank (1), the ventilation bubbling assembly (2) being connected to an external air compressor (202), and the compressed air delivered by the air compressor (202) being discharged into the dissolving tank (1) through the ventilation bubbling assembly (2); The inner wall of the middle region of the dissolving tank (1) is connected to a plurality of air inlet pipes (3), the air inlet pipes (3) extending upwardly and obliquely relative to the inner wall of the dissolving tank (1), and the air inlet pipes (3) are connected to an external air pump so as to drive the polyacrylamide powder to diffuse into the interior of the dissolving tank (1) through the air inlet pipes (3); The dissolving device further comprises: Liquid inlet and outlet components.

2. The rapid dissolution device for polyacrylamide for fracturing according to claim 1, characterized in that: The dissolving tank (1) comprises: A lower tank body (101) of a cylindrical structure located at the bottom; an upper tank body (102) located at the upper end of the lower tank body (101) and having an arc-shaped funnel-shaped structure; and The tank opening (103) is connected to the center position of the upper end of the upper tank body (102), and the tank opening (103) is conical and has an open structure.

3. The rapid dissolution device for polyacrylamide for fracturing according to claim 2, characterized in that: The ventilation bubble assembly (2) comprises: a serpentine coil (201) arranged at the bottom of the dissolving tank (1), with a coil interface for connecting to the air compressor (202) reserved at the center of the serpentine coil (201); and an air inlet pipe (203) connecting the air compressor (202) and the serpentine coil (201), wherein the air inlet pipe (203) extends from the tank opening (103) to the interior of the dissolving tank (1); A plurality of air outlet holes (204) are evenly arranged on the upper surface of the serpentine coil (201).

4. The rapid dissolution device for polyacrylamide for fracturing according to claim 2, characterized in that: The four air inlet pipes (3) are all arranged on the inner wall of the lower tank body (101) close to one end of the upper tank body (102); The included angles between the four air inlet pipes (3) and the horizontal line are 15°, 30°, 45° and 60° respectively.

5. The rapid dissolution device for polyacrylamide for fracturing according to claim 4, characterized in that: An opening (301) is provided on the upper surface of the air inlet pipe (3), and the opening (301) is a long hole; The opening (301) extends from the nozzle of the air inlet pipe (3) to the inner wall of the dissolving tank (1).

6. The rapid dissolution device for polyacrylamide for fracturing according to claim 5, characterized in that: The width of the opening (301) is 1 / 10 of the outer diameter of the air inlet pipe (3).

7. The rapid dissolution device for polyacrylamide for fracturing according to claim 5, characterized in that: The four air inlet pipes (3) are respectively connected to one of the air pumps.

8. The rapid dissolution device for polyacrylamide for fracturing according to claim 2, characterized in that: The liquid inlet and outlet components include: a liquid inlet pipe (401) connected to one side of the lower portion of the lower tank body (101), a liquid inlet pipe valve (402) being installed on the liquid inlet pipe (401), and the liquid inlet pipe (401) being connected to an external centrifugal pump (403); and A liquid outlet pipe (404) is connected to the other side of the lower portion of the lower tank body (101), and a liquid outlet pipe valve (405) is installed on the liquid outlet pipe (404).

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