CN203899476U - Fracturing fluid mixing device - Google Patents

Fracturing fluid mixing device Download PDF

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Publication number
CN203899476U
CN203899476U CN201420278635.3U CN201420278635U CN203899476U CN 203899476 U CN203899476 U CN 203899476U CN 201420278635 U CN201420278635 U CN 201420278635U CN 203899476 U CN203899476 U CN 203899476U
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China
Prior art keywords
fracturing fluid
connector
blending device
venturi
input duct
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Active
Application number
CN201420278635.3U
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Chinese (zh)
Inventor
吕亮
种豹
苟治平
仲跻风
杜明强
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Yantai Jereh Petroleum Equipment and Technologies Co Ltd
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Yantai Jereh Petroleum Equipment and Technologies Co Ltd
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Abstract

The utility model provides a fracturing fluid mixing device which comprises a pre-mixing device and a Venturi ejector arranged at the bottom of the pre-mixing device, wherein the pre-mixing device comprises a main body, a liquid inlet pipeline communicated with an inner cavity of the main body, a feeding opening formed in the top of the main body and a connecting opening formed in the bottom of the main body; the connecting opening is connected with a side pipeline of the Venturi ejector. According to the fracturing fluid mixing device provided by the utility model, the pre-mixing device and the Venturi ejector are arranged, so that the fracturing fluid is finally formed through two-time mixing; compared with a traditional fracturing fluid formed through one-time mixing, the fracturing fluid obtained through the two-time mixing is more uniform, reduces the possibility of powder caking, enhances the permeability of the fracturing fluid, and increases the viscosity of the fracturing fluid, therefore, the fracturing processing effect of an oil-gas well is better, and the cost of the oil-gas well development is reduced.

Description

A kind of of the fracturing fluid blending device
Technical field
The utility model relates to adopts oil/gas equipment technical field, more particularly, relates to a kind of of the fracturing fluid blending device.
Background technology
Oil, gas well are in formation testing or production process, because there are pollution (drilling well, cement the well, wash Well Killing Process all can pollute) or the low reason of stratum original permeability near wellbore zone, can cause oil, gas well yield lower, and this problem can solve by fracturing technique.
Fracturing technique refers in oil recovery or gas production process, utilize fluid pressure effect, make a kind of method in the reservoir formation crack of oil, gas, its concrete operations are the pumps that adopt high-pressure large-displacement, utilize the principle of liquid pressure transmission, by thering is the liquid (being fracturing fluid) of certain viscosity, to be greater than the pressure of the absorbability of reservoir, to reservoir, inject, and then near shaft bottom, in stratum, form the sand packed fracture with certain physical dimension and high flow conductivity, make well reach the object of increasing yield and injection.
In the prior art, fracturing fluid is to be mixed and to form in blending device by guanidine rubber powder and base fluid, blending device comprises that (base fluid is generally water for charging aperture, inlet, so also referred to as water inlet) and outlet, wherein charging aperture is the passage that guanidine rubber powder enters, inlet is the passage that base fluid enters, guanidine rubber powder and base fluid enter into after blending device simultaneously, in the inner chamber of blending device, mix, after having mixed, the fracturing fluid obtaining is discharged from outlet.
But; the fracturing fluid that the blending device of employing said structure is mixed and forms; often there is mixing inhomogeneous phenomenon; make fracturing fluid often can have powder agglomeration phenomenon (being commonly called as flake); these cakings have not only weakened of the fracturing fluid permeability; and reduced of the fracturing fluid viscosity, had a strong impact on frac treatment effect oily, gas well.
Therefore, how improving the of the fracturing fluid quality that is mixed, improve the frac treatment effect of oil, gas well, is current those skilled in the art's problem demanding prompt solution.
Utility model content
In view of this, the utility model provides a kind of of the fracturing fluid blending device, and it can improve the of the fracturing fluid quality that is mixed, and then improves the frac treatment effect of oil, gas well.
In order to achieve the above object, the utility model provides following technical scheme:
An of the fracturing fluid blending device, it comprises:
Pre-mixing apparatus, described pre-mixing apparatus comprises body and the input duct being communicated with the inner chamber of described body, is arranged on the charging aperture of described bodies top, and is arranged on the connector of described body bottom;
The venturi-type eductors that is arranged on described pre-mixing apparatus bottom, described connector is connected with the side ducts of described venturi-type eductors.
Preferably, in above-mentioned of the fracturing fluid blending device, described body is tubular, and described charging aperture and described connector are respectively two ports of the described body of tubular.
Preferably, in above-mentioned of the fracturing fluid blending device, described connector is the axially extended convergent mouth along described body.
Preferably, in above-mentioned of the fracturing fluid blending device, described input duct is tangentially connected with the outer peripheral face of described body, to make in described input duct, enters into described intrinsic base fluid, mobile in a spiral manner around the axis of described body.
Preferably, in above-mentioned of the fracturing fluid blending device, also comprise and being arranged in described input duct, in order to regulate the valve of described input duct feed liquor flow.
In the of the fracturing fluid blending device that the utility model provides, it comprises pre-mixing apparatus and is arranged on the venturi-type eductors of pre-mixing apparatus bottom, when fracturing fluid is mixed, guanidine rubber powder enters into pre-mixing apparatus from the charging aperture of bodies top, base fluid enters pre-mixing apparatus from input duct simultaneously, make guanidine rubber powder and base fluid can in body, near the position of connector, tentatively be mixed and then form guanidine glue, when swiftly flowing base fluid from venturi-type eductors through out-of-date, the negative pressure producing can suck guanidine glue in venturi-type eductors through connector from pre-mixing apparatus, and again mix with swiftly flowing base fluid, and then formation fracturing fluid.In the of the fracturing fluid blending device that the utility model provides, by pre-mixing apparatus and venturi-type eductors are set, make fracturing fluid through twice mixing and finally form, compare with the fracturing fluid that traditional mixed once forms, the fracturing fluid being mixed to get for twice is more even, has reduced the occurrence probability of powder agglomeration phenomenon, strengthened of the fracturing fluid permeability, and improved of the fracturing fluid viscosity, and make the frac treatment effect of oil, gas well better, also reduced the cost of Oil/gas Well exploitation simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The top view of the of the fracturing fluid blending device that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the main pseudosection (A-A) of Fig. 1;
Fig. 3 is the top view of body and input duct;
Fig. 4 is the main pseudosection (A-A) of Fig. 3.
In above Fig. 1-Fig. 4:
Body 1, input duct 2, charging aperture 3, connector 4, side ducts 5, entrance 6, contraction section 7, venturi 8, diffuser 9, valve 10, tubular elements 11, sleeve 12, connector 13, catheter 14.
The specific embodiment
The utility model provides a kind of of the fracturing fluid blending device, and it can improve the of the fracturing fluid quality that is mixed, and then improves frac treatment effect.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As depicted in figs. 1 and 2, the of the fracturing fluid blending device that the utility model embodiment provides, it comprises:
Pre-mixing apparatus, pre-mixing apparatus comprises body 1 and the input duct 2 being communicated with the inner chamber of body 1, is arranged on the charging aperture 3 at body 1 top, and is arranged on the connector 4 of body 1 bottom;
The venturi-type eductors that is arranged on pre-mixing apparatus bottom, connector 4 is connected with the side ducts 5 of venturi-type eductors.
In the of the fracturing fluid blending device that the present embodiment provides, it comprises pre-mixing apparatus and is arranged on the venturi-type eductors of pre-mixing apparatus bottom, when fracturing fluid is mixed, guanidine rubber powder enters into pre-mixing apparatus from the charging aperture 3 at body 1 top, base fluid enters pre-mixing apparatus from input duct 2 simultaneously, make guanidine rubber powder and base fluid can at the interior convergent position near connector 4 of body 1, tentatively be mixed and then form guanidine glue, when swiftly flowing base fluid from venturi-type eductors through out-of-date, connector 4 places at pre-mixing apparatus form vacuum, guanidine glue can be sucked in venturi-type eductors through connector 4 from pre-mixing apparatus, and again mix with swiftly flowing base fluid, and then formation fracturing fluid.
In the of the fracturing fluid blending device that the present embodiment provides, the mode that has adopted pre-mixing apparatus and venturi-type eductors to be used in conjunction with, make fracturing fluid through twice mixing and finally form, compare with the fracturing fluid that traditional mixed once forms, the fracturing fluid being mixed to get for twice is more even, reduced the occurrence probability of powder agglomeration phenomenon, strengthened of the fracturing fluid permeability, and improved of the fracturing fluid viscosity, make the better processing effect of pressure break oil, gas well, also reduced the cost of Oil/gas Well exploitation simultaneously.
In the present embodiment, body 1 specifically comprises tubular elements 11 and is set in the sleeve 12 in tubular elements 11 outsides, and is connected with sleeve 12, and is positioned at the connector 13 of tubular elements 11 bottoms.The open top of this tubular elements 11 is charging aperture 3, and bottom opening is convergent mouth.Be set between the inwall of sleeve 12 in tubular elements 11 outsides and the outer wall of tubular elements 11 and there is gap, thereby make to form between tubular elements 11 and sleeve 12 annular cavity, input duct 2 is tangentially connected with sleeve 12, and be communicated with this annular cavity, make base fluid to enter into annular cavity through input duct 2, and in the mode under screw, flow to convergent mouth place in annular cavity, thereby base fluid is mixed at convergent mouth with the guanidine rubber powder entering from charging aperture 3, then the connector 13 of flowing through, and be to enter in venturi-type eductors connector 4 from the bottom opening of connector 13.
In order further to optimize above-mentioned technique effect, in the of the fracturing fluid blending device that the present embodiment provides, body 1 is tubular, and charging aperture 3 and connector 4 are respectively two ports of tubular body 1, as shown in Figure 2.In order to simplify the self structure of pre-mixing apparatus, reduce its difficulty of processing, the preferred body 1 of the present embodiment is cylinder-like structure, and makes two ports of cylinder respectively as charging aperture 3 and connector 4.Wherein to be positioned at the port at top be charging aperture 3 to body 1, the connector 4 of the port that is positioned at bottom for being connected with venturi-type eductors.
Concrete, connector 4 is the axially extended convergent mouth along body 1.As shown in Figure 2, body 1 is near the part of connector 4, and integral body is convergent tubulose, thus make connector 4 for body 1 axially on the diminishing convergent mouth of diameter, guanidine rubber powder and base fluid are realized preliminary mixing at this convergent port part.The connector 4 of this kind of structure, is conducive to the abundant mixing of guanidine glue in pre-mixing apparatus, also can improve negative pressure that venturi-type eductors the produces suction effect to guanidine glue simultaneously.
Preferably, input duct 2 is tangentially connected with the outer peripheral face of body 1, to make in input duct 2, enters into the base fluid in body 1, mobile in a spiral manner around the axis of body 1.As shown in Figure 2, input duct 2 setting vertical with body 1, and input duct 2 is tangentially connected with body 1, and the circle that axis of input duct 2 and body 1 outer peripheral face form on cross section is tangent.This kind of connected mode, can make to enter the base fluid in body 1 inner chamber through input duct 2, can rotate in a circumferential direction around the axis of body 1 mobile, to the direction (below) near connector 4, flow simultaneously, base fluid is flowed in a spiral manner in body 1 inner chamber, and then realize the guanidine rubber powder entering from charging aperture 3 is carried out to power shearing, make preliminary mixing more even.
This input duct 2 is communicated with away from one end of body 1 and the catheter 14 of venturi-type eductors upstream, and a part for base fluid flow in input duct 2 in catheter 14, for the preliminary mixing of guanidine glue.
Further, the side ducts 5 of venturi-type eductors is gradually reducing pipeline, and the less one end of gradually reducing pipeline opening is connected conducting with the main pipe of venturi-type eductors, as shown in Figure 1.The side ducts 5 of this kind of structure, is conducive to improve negative pressure that venturi-type eductors the produces suction effect to guanidine glue equally.After guanidine glue is inhaled in main pipe, the swiftly flowing base fluid entering from the entrance 6 of venturi-type eductors carries out intense impact to guanidine glue, thereby contraction section 7 and venturi 8 places in venturi-type eductors are mixed again, obtain mixing fracturing fluid more uniformly, then fracturing fluid is from the diffuser 9 output blending devices of venturi-type eductors.Certainly, the side ducts 5 of venturi-type eductors is straight tube pipeline.
In the present embodiment, venturi-type eductors makes base fluid that guanidine glue is carried out high velocity jet and be mixed, and can carry out fast guanidine rubber powder, mix uniformly, and the of the fracturing fluid performance obtaining is also more stable.
In this description, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (5)

1. an of the fracturing fluid blending device, is characterized in that, comprising:
Pre-mixing apparatus, described pre-mixing apparatus comprises body (1) and the input duct (2) being communicated with the inner chamber of described body (1), be arranged on the charging aperture (3) at described body (1) top, and be arranged on the connector (4) of described body (1) bottom;
The venturi-type eductors that is arranged on described pre-mixing apparatus bottom, described connector (4) is connected with the side ducts (5) of described venturi-type eductors.
2. of the fracturing fluid blending device according to claim 1, is characterized in that, described body (1) is tubular, and described charging aperture (3) and described connector (4) are respectively two ports of the described body (1) of tubular.
3. of the fracturing fluid blending device according to claim 2, is characterized in that, described connector (4) is the axially extended convergent mouth along described body (1).
4. of the fracturing fluid blending device according to claim 2, it is characterized in that, described input duct (2) is tangentially connected with the outer peripheral face of described body (1), to make in described input duct (2), enter into the base fluid in described body (1), mobile in a spiral manner around the axis of described body (1).
5. according to the of the fracturing fluid blending device described in any one in claim 1-4, it is characterized in that, also comprise and be arranged on described input duct (2) above, in order to regulate the valve (10) of described input duct (2) feed liquor flow.
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CN106215733A (en) * 2016-08-11 2016-12-14 中国石油大学(华东) A kind of pressure break powder liquid blending device
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