CN210121443U

CN210121443U - Acidizing fracturing fluid blending device

Info

Publication number: CN210121443U
Application number: CN201920623687.2U
Authority: CN
Inventors: 聂梦圆; 王金玉; 江林峰; 张宇豪; 李涛; 何正权
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2020-03-03
Anticipated expiration: 2029-05-05

Abstract

An acidizing fracturing fluid blending device comprises a liquid mixing box, a top cover, a first driving motor and a truncated cone-shaped guide cylinder, wherein the top cover is arranged on the upper surface of the liquid mixing box, the first driving motor is arranged in the middle of the upper surface of the top cover, the truncated cone-shaped guide cylinder is arranged on the lower surface of the top cover, a base is arranged on the lower surface of the liquid mixing box, a liquid outlet pipe is arranged on the right side wall of the liquid mixing box, a control valve is arranged on the outer side wall of the liquid outlet pipe, a worker can conveniently enter the liquid mixing box for maintenance through arrangement of the liquid mixing box and the top cover, preliminary mixing of liquid can be achieved through the truncated cone-shaped guide cylinder and the first stirring blade, deep mixing of liquid is achieved through the second stirring blade and the third stirring blade, the second stirring blade rotates clockwise at a high speed, the third stirring blade rotates anticlockwise at a high speed, preliminary mixing liquid can form convection to generate vortex, the preliminary mixing liquid is fully mixed from bottom to top, realizes quick deep mixing, and has stronger practicality.

Description

Acidizing fracturing fluid blending device

Technical Field

The utility model relates to an acidizing fracturing equipment technical field, concrete field is an acidizing fracturing fluid blending device.

Background

In the process of oil testing or production of an oil and gas well, the yield is low due to pollution in a near well or low original permeability of a stratum and the like, the yield is usually improved by a fracturing technology, the acidizing fracturing technology is the most effective measure for increasing the yield of a carbonate and a complex lithologic fractured reservoir, the quality of acidizing fracturing fluid is high, and the quality of the acidizing fracturing fluid directly determines the quality of the permeability of the stratum, namely the improvement effect of the improved stratum is influenced, so a device for mixing the acidizing fracturing fluid is the key point in acidizing improvement, the main components of the acidizing fracturing fluid comprise hydrochloric acid, hydrofluoric acid, a thickening agent, a corrosion inhibitor, an cleanup additive, a surfactant and the like, the materials are required to be fully and uniformly mixed in advance in acidizing operation, however, the existing acidizing fracturing fluid mixing device has some problems, the existing acidizing fluid mixing device has a single structure, and only needs to be singly stirred by a, the acidizing fracturing fluid blending device can not be used for deeply mixing liquid in a distributed mode, a blender is difficult to ensure that the liquid is fully mixed from bottom to top, particularly the problem that the liquid at the bottom is often mixed unevenly is solved, and therefore the acidizing fracturing fluid blending device is provided for solving the problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an acidizing fracturing fluid blending device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an acidizing fracturing fluid blending device comprises a fluid mixing tank, a top cover, a first driving motor, a truncated cone-shaped guide cylinder and a liquid outlet pipe, wherein the top cover is arranged on the upper surface of the fluid mixing tank, the top cover and the fluid mixing tank are connected with each other through a butterfly nut, the first driving motor is arranged in the middle of the upper surface of the top cover, the output end of the first driving motor is rotatably connected with a first stirring blade through a first rotating shaft, a liquid inlet pipe is uniformly arranged on the upper surface of the top cover in the circumferential direction by taking the first driving motor as a circle center, the truncated cone-shaped guide cylinder is arranged on the lower surface of the top cover, a detachable filter screen is arranged on the lower surface of the truncated cone-shaped guide cylinder, guide corrugations are arranged on the inner side wall of the truncated cone-shaped guide cylinder, a base is arranged on the lower surface of the fluid mixing tank, positioning grooves are formed in the left side and the left side of the positioning, the output of second driving motor has second stirring vane, right side through second axis of rotation connection be equipped with third driving motor in positioning groove's the recess, third driving motor's output has third stirring vane through third axis of rotation connection, the right side wall of mixing liquid case is equipped with the drain pipe, the lateral wall of drain pipe is equipped with the control valve.

Preferably, the first stirring blades are arranged on the left side and the right side in a V shape, the stirring diameter of the first stirring blades is larger than the diameter of the lower surface of the circular truncated cone-shaped guide cylinder, and the stirring diameter of the first stirring blades is smaller than the diameter of the upper surface of the circular truncated cone-shaped guide cylinder.

Preferably, a sealing ring is arranged between the top cover and the liquid mixing box, and a communicating vessel is arranged on the right side wall of the liquid mixing box and above the liquid outlet pipe.

Preferably, a V-shape is formed between the second stirring blades on the left side and the right side of the second rotating shaft and between the third stirring blades on the left side and the right side of the third rotating shaft, and the height of each group of second stirring blades is higher than that of each group of third stirring blades.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides an acidizing fracturing fluid blending device, make things convenient for the staff to get into through setting up of mixing liquid case and top cap and mix the inside maintenance of liquid case, use through the cooperation of round platform shape draft tube and first stirring vane and can realize the initial mix to liquid, realize the degree of depth mixing to liquid through second stirring vane and third stirring vane, second stirring vane delays clockwise high-speed rotation, third stirring vane delays anticlockwise high-speed rotation, can make the initial mix liquid form convection current and produce the swirl, every group second stirring vane highly all is higher than every group third stirring vane's height, make the initial mix liquid intensive mixing from bottom to top, realize quick deep mixing, convenient operation is rational in infrastructure, has stronger practicality.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic top view of the cone-shaped guide shell of the present invention;

fig. 3 is a schematic top view of the top cover of the present invention.

In the figure: 1-liquid mixing box, 2-top cover, 3-butterfly nut, 4-first driving motor, 5-first rotating shaft, 6-first stirring blade, 7-liquid inlet pipe, 8-round table-shaped guide cylinder, 9-detachable filter screen, 10-guide corrugation, 11-base, 12-positioning groove, 13-second driving motor, 14-second rotating shaft, 15-second stirring blade, 16-third driving motor, 17-third rotating shaft, 18-third stirring blade, 19-liquid outlet pipe, 20-control valve and 21-communicating vessel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an acidizing fracturing fluid blending device comprises a liquid mixing box 1, a top cover 2, a first driving motor 4, a truncated cone-shaped guide cylinder 8 and a liquid outlet pipe 19, wherein the top cover 2 is arranged on the upper surface of the liquid mixing box 1, the top cover 2 and the liquid mixing box 1 are connected with each other through a butterfly nut 3, workers can conveniently enter the liquid mixing box for maintenance through arrangement of the liquid mixing box and the top cover, the liquid mixing box and the top cover are fixed through the butterfly nut, the first driving motor 4 is arranged in the middle of the upper surface of the top cover 2, the output end of the first driving motor 4 is rotatably connected with a first stirring blade 6 through a first rotating shaft 5, liquid inlet pipes 7 are uniformly arranged on the upper surface of the top cover 2 in the circumferential direction by taking the first driving motor 4 as a circle center, the truncated cone-shaped guide cylinder 8 is arranged on the lower surface of the top cover 2, and a detachable filter screen 9 is arranged on the lower surface of the truncated cone-shaped, the inner side wall of the round table-shaped guide cylinder 8 is provided with guide ripples 10, liquid can be preliminarily mixed through the round table-shaped guide cylinder, each liquid flows into the liquid inlet pipe, the first driving motor drives the first stirring blade to rotate under the working state, the first stirring blade can drive the liquid to rotate, vortexes are formed under the assistance of the guide ripples to realize preliminary mixing, preliminarily and well-mixed liquid is left from the guide ripples and enters the liquid mixing box through a detachable filter screen to be deeply mixed, the lower surface of the liquid mixing box 1 is provided with a base 11, the left side and the right side of the upper surface of the base 11 are respectively provided with a positioning groove 12, the left side of the groove of the positioning groove 12 is internally provided with a second driving motor 13, the output end of the second driving motor 13 is connected with a second stirring blade 15 through a second rotating shaft 14, and the right side of the groove of the positioning groove 12 is internally provided with, the output end of the third driving motor 16 is connected with a third stirring blade 18 through a third rotating shaft 17, deep mixing of liquid is realized through the second stirring blade and the third stirring blade, after the primary mixed liquid enters the liquid mixing box, the second driving motor is opened to drive the second stirring blade to rotate clockwise at high speed, the third driving motor is opened to drive the third stirring blade to rotate anticlockwise at high speed, the primary mixed liquid forms convection to generate vortex, the height of each group of second stirring blades is higher than that of each group of third stirring blades, the primary mixed liquid is fully mixed from bottom to top, rapid deep mixing is realized, in addition, for acid mist or foam generated in the stirring process, the primary mixed liquid absorbs partial acid mist in the falling process, partial foam is smashed, the influence of the acid mist and the foam on liquid mixing is avoided, a liquid outlet pipe 19 is arranged on the right side wall of the liquid mixing box 1, and a control valve 20 is arranged on the outer side wall of the liquid outlet pipe 19, and when the control valve is opened, the deeply-mixed liquid is discharged through the liquid outlet pipe.

Particularly, the left and right sides become the V font between the first stirring vane 6, the stirring diameter of first stirring vane 6 is greater than the lower surface diameter of round platform shape draft tube 8, the stirring diameter of first stirring vane 6 is less than the first stirring vane of the upper surface diameter of round platform shape draft tube 8 and forms the V font, and the rotation process drives liquid and forms the swirl, improves stirring efficiency, and first stirring vane can be at round platform shape draft tube internal rotation, and does not touch round platform shape draft tube inner wall.

Specifically, state top cap 2 with be equipped with the sealing washer between the liquid mixing box 1, the right side wall of liquid mixing box 1 just is located drain pipe 19 top and is equipped with linker 21, improves the leakproofness of top cap and liquid mixing box through the sealing washer, is convenient for observe liquid level and the liquid mixing condition in the liquid mixing box through the linker.

Particularly, all become the V font between the second stirring vane 15 of the 14 left and right sides of second axis of rotation and between the third stirring vane 18 of the left and right sides of third axis of rotation 17, every group second stirring vane 15 highly all is higher than every group third stirring vane 18's height, V font stirring vane rotation process drive liquid and form the swirl, improve stirring efficiency for preliminary mixed liquid intensive mixing from bottom to top realizes quick deep mixing.

The working principle is as follows: the utility model provides an acidizing fracturing fluid blending device, which is convenient for workers to enter the interior of a liquid mixing box for maintenance through the arrangement of the liquid mixing box and a top cover, the preliminary mixing of liquid can be realized through a round platform-shaped guide cylinder, each liquid is extended to flow in a liquid pipe, a first driving motor is driven to rotate under the working state, the first stirring blade is driven to rotate, the liquid is formed into a vortex under the assistance of guide corrugations to realize the preliminary mixing, the preliminary and very good liquid is left from the guide corrugations and enters the liquid mixing box through a detachable filter screen to be deeply mixed, the deep mixing of the liquid is realized through a second stirring blade and a third stirring blade, after the preliminary mixed liquid enters the liquid mixing box, the second driving motor is opened to drive the second stirring blade to extend clockwise high-speed rotation, and simultaneously the third driving motor is opened to drive the third stirring blade to extend anticlockwise high-speed rotation, can make preliminary mixed liquid form convection current produce the swirl, every group second stirring vane highly all is higher than every group third stirring vane's height for preliminary mixed liquid intensive mixing from bottom to top realizes quick deep-mixing, opens the control valve, and deep-mixed liquid prolongs the drain pipe and discharges.

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

Claims

1. The utility model provides an acidizing fracturing fluid blending device, includes liquid mixing box (1), top cap (2), a driving motor (4), round platform shape draft tube (8) and drain pipe (19), its characterized in that: the upper surface of the liquid mixing box (1) is provided with a top cover (2), the top cover (2) and the liquid mixing box (1) are connected with each other through a butterfly nut (3), the middle part of the upper surface of the top cover (2) is provided with a first driving motor (4), the output end of the first driving motor (4) is rotatably connected with a first stirring blade (6) through a first rotating shaft (5), the upper surface of the top cover (2) is uniformly provided with a liquid inlet pipe (7) in the circumferential direction by taking the first driving motor (4) as the circle center, the lower surface of the top cover (2) is provided with a circular truncated cone-shaped guide cylinder (8), the lower surface of the circular truncated cone-shaped guide cylinder (8) is provided with a detachable filter screen (9), the inner side wall of the circular truncated cone-shaped guide cylinder (8) is provided with guide corrugations (10), the lower surface of the liquid mixing box (1) is provided with a base (11), the left side and the right side of the upper, left side be equipped with second driving motor (13) in the recess of positioning groove (12), the output of second driving motor (13) is connected with second stirring vane (15) through second axis of rotation (14), right side be equipped with third driving motor (16) in the recess of positioning groove (12), the output of third driving motor (16) is connected with third stirring vane (18) through third axis of rotation (17), the right side wall of mixing liquid case (1) is equipped with drain pipe (19), the lateral wall of drain pipe (19) is equipped with control valve (20).

2. The acidizing fracturing fluid compounding device of claim 1 wherein: the left and right sides become the V font between first stirring vane (6), the stirring diameter of first stirring vane (6) is greater than the lower surface diameter of round platform shape draft tube (8), the stirring diameter of first stirring vane (6) is less than the upper surface diameter of round platform shape draft tube (8).

3. The acidizing fracturing fluid compounding device of claim 1 wherein: top cap (2) with be equipped with the sealing washer between liquid mixing box (1), the right side wall of liquid mixing box (1) just is located drain pipe (19) top and is equipped with linker (21).

4. The acidizing fracturing fluid compounding device of claim 1 wherein: the V-shaped stirring device is characterized in that V-shaped structures are formed between second stirring blades (15) on the left side and the right side of the second rotating shaft (14) and between third stirring blades (18) on the left side and the right side of the third rotating shaft (17), and the height of each group of second stirring blades (15) is higher than that of each group of third stirring blades (18).