CN110787667A - Blending system - Google Patents
Blending system Download PDFInfo
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- CN110787667A CN110787667A CN201911291784.7A CN201911291784A CN110787667A CN 110787667 A CN110787667 A CN 110787667A CN 201911291784 A CN201911291784 A CN 201911291784A CN 110787667 A CN110787667 A CN 110787667A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/49—Mixing systems, i.e. flow charts or diagrams
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Abstract
The invention discloses a blending system, which comprises a mixing module and an output module, wherein the mixing module comprises a first liquid inlet collecting pipe, an injection pump, a powder tank and a mixer, the first liquid inlet collecting pipe is connected with the injection pump, the injection pump is connected with the mixer, and the powder tank provides powder for the mixer; the output module comprises a second liquid inlet manifold, a suction pump, a second flowmeter, a static mixer, a mixing tank and a liquid discharge manifold, wherein the second liquid inlet manifold, the suction pump, the second flowmeter, the static mixer, the mixing tank and the liquid discharge manifold are sequentially connected; the outlet of the mixer of the mixing module is connected with the inlet of the suction pump of the output module through a valve, and the mixing module and the output module can be used independently or combined into a whole. Has the advantages that: by arranging the second liquid inlet header and the static mixer, the mixing with large discharge capacity and high quality can be completed with lower energy consumption; the mixed system is flexible to disassemble and assemble.
Description
Technical Field
The invention relates to the technical field of fracturing, in particular to a blending system.
Background
Fracturing is a main measure for increasing the yield of oil and gas fields, and a large amount of fracturing base fluid is needed in the fracturing construction operation at home and abroad at present, particularly in the fracturing construction site of shale gas. In the current fracturing construction process, the fracturing fluid mixing truck which can be used in a mixed mode on site is increasingly widely applied, but along with the increase of the fracturing scale, bubbles are easily caused in the mixing fluid due to various reasons such as chemicals and the like, so that the bubbles in mixing equipment and downstream equipment are increased, the using amount of a defoaming agent is increased, the mixing effect is poor, and meanwhile along with the increase of the fracturing scale, the requirements on the discharge capacity and the viscosity of the mixing truck are higher and higher. At present, based on a large-discharge mixing operation process, a mixing mode adopted in most cases is a mode of mixing a concentrated liquid mixed firstly with water or other base liquid, the method has high efficiency, but due to different modes, the method has more effect differences and is not ideal.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a mixing system.A second liquid inlet header is arranged to dilute the concentrated solution mixed by a mixer, and the diluted concentrated solution enters a static mixer for secondary mixing through secondary pressurization of a suction pump, so that the mixing effect is further improved, bubbles in the liquid are reduced, the application of a defoaming agent is reduced, and the mixing effect is increased; the two modules of the mixing system are detachably connected and installed, and according to the requirements of field customers, the mixing module and the output module can be separately used independently or combined into a whole; during transportation, the two modules can be installed and transported in a complete set, and the two modules can be separately and independently transported, so that the transportation selectivity and convenience are greatly increased.
The aim of the invention is achieved by the following technical measures:
a mixing system comprises a mixing module and an output module, wherein the mixing module comprises a first liquid inlet collecting pipe, an injection pump, a powder tank and a mixer, the first liquid inlet collecting pipe is connected with an inlet of the injection pump, an outlet of the injection pump is connected with an inlet of the mixer, and the powder tank provides powder for the mixer; the output module comprises a second liquid inlet collecting pipe, a suction pump, a second flowmeter, a static mixer, a mixing tank and a liquid discharge pipe manifold, wherein the second liquid inlet collecting pipe is connected with an inlet of the suction pump; the outlet of the mixer of the mixing module is connected with the inlet of the suction pump of the output module through a valve, and the mixing module and the output module can be used independently or combined into a whole.
Further, the mixing module and the output module may be shipped separately or combined in a kit.
Further, the mixer is a compound jet mixer or a mixer with a shear pump as a main body.
Furthermore, more than two groups of mixers are arranged between the jet pump and the suction pump in parallel.
Further, the compounding system also includes a liquid addition header for adding liquid chemicals.
Furthermore, a branch is arranged on the mixer and used for adding liquid or powder.
Further, the liquid discharge manifold comprises a discharge centrifugal pump, a third flow meter and a discharge header, wherein the discharge centrifugal pump is connected with the third flow meter, the third flow meter is connected with the discharge header, and the discharge header is connected with the inlet end of the discharge centrifugal pump and is used for directly discharging the mixed liquid out of the system.
Furthermore, the outlet end of the liquid discharge pipe is connected with the inlet end of the mixing tank through a pipeline, and the mixed liquid flows back to the mixing tank.
Furthermore, the outlet end of the liquid discharge pipe is connected with the inlet end of the mixing tank through a pipeline, and a static mixer is arranged on the pipeline.
Furthermore, the outlet end of the liquid discharge pipe is connected with the inlet end of the mixing tank through a pipeline, a static mixer is arranged on the pipeline, and a liquid level control valve is arranged at the outlet end of the static mixer.
Further, the outlet end of the liquid discharge manifold is connected with the inlet end of the second liquid inlet header, and the mixed liquid is used for flowing back to the suction pump.
Compared with the prior art, the invention has the beneficial effects that: according to the mixing system, the second liquid inlet collecting pipe is arranged and forms a series structure with the mixer, the mixed concentrated solution in the mixer is diluted and enters the static mixer for secondary mixing through secondary pressurization of the suction pump, so that the mixing efficiency is further improved, bubbles in the liquid are reduced, the application of a defoaming agent is reduced, and the mixing effect is improved; the pipelines between the two modules of the mixing system are connected through valves, namely detachably connected and installed, and according to the requirements of field customers, the mixing module and the output module can be used separately and independently or combined into a whole; during transportation, the two modules can be installed and transported in a complete set, and the two modules can be transported separately, so that the transportation selectivity and convenience are greatly increased. The blending system is provided with a plurality of reflux circulation lines, so that the blending quality of the fracturing fluid is improved.
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of the present compounding system.
Fig. 2 is a schematic structural diagram of the optimization scheme of the mixing system.
The system comprises a liquid inlet manifold, a liquid inlet pump, a liquid level control valve, a first flowmeter, a second flowmeter, a third flowmeter, a first liquid inlet manifold, a second liquid inlet manifold, a powder tank, a spiral conveyor, a mixer, a suction pump, a static mixer, a liquid inlet manifold, a mixing tank, a discharge centrifugal pump, a discharge manifold, a liquid inlet manifold, a liquid level control valve, a first flowmeter, a second flowmeter and a third flowmeter, wherein the liquid level control valve is arranged in the.
Detailed Description
As shown in fig. 1 and 2, a mixing system comprises a mixing module and an output module, wherein the mixing module comprises a first liquid inlet header 1, an injection pump 2, a powder tank 3 and a mixer 5, and the first liquid inlet header 1 is connected with an inlet of the injection pump 2 and is used for providing base liquid for the mixer 5 and providing kinetic energy for conveying the base liquid. The outlet of the jet pump 2 is connected with the inlet of the mixer 5, and further preferably, the outlet of the jet pump 2 is connected with the inlet of the mixer 5 through a first flow meter 14, and the mixer 5 can adjust the flow of the mixer 5 according to the flow displayed by the first flow meter 14. The powder tank 3 is used for providing powder for the mixer 5 and mixing the powder with the base liquid to form a mixed concentrated solution; the output module comprises a second liquid inlet header 8, a suction pump 6, a second flowmeter 15, a static mixer 7, a mixing tank 5 and a liquid discharge manifold, the second liquid inlet header 8 is connected with an inlet of the suction pump 6, and the suction pump 6 is used for carrying out secondary pressurization on mixed liquid and increasing the conveying kinetic energy of the mixed liquid. Before the blending liquid is pressurized for the second time and enters the static mixer 7, the base liquid is added into the blending liquid, the concentrated blending liquid is diluted, the concentration of the blending liquid is reduced, the blending liquid can be fully mixed in the subsequent static mixer 7, and the requirements of large-displacement fracturing operation on the displacement of the fracturing liquid and the viscosity of the blending liquid are met. The outlet of the suction pump 6 is connected with the inlet of a second flow meter 15, the outlet of the second flow meter 15 is connected with the inlet of a static mixer 7, and the static mixer 7 can carry out flow regulation according to the flow displayed by the second flow meter 15. The static mixer 7 fully utilizes the kinetic energy of the mixed liquid in the pipeline and completes efficient mixing under the condition of consuming a small amount of energy. The outlet of the static mixer 7 is connected with the inlet of the mixing tank 9, and the outlet of the mixing tank 9 is connected with the inlet of the liquid discharge manifold; the outlet of the mixer 5 of the mixing module is connected with the inlet of the suction pump 6 of the output module through a valve, and the mixing module and the output module can be used independently or combined into a whole.
The mixing module and the output module can be transported separately and combined to be transported in a set.
The mixer 5 in the invention can select different mixers 5 according to different chemical additives, preferably a compound jet mixer 5 or a mixer 5 with a shear pump as a main body, the two mixers 5 can also be used in a mixing way, and in the operation process which is easy to foam, the shear pump type powder mixer 5 can also be selected to reduce air introduction and reduce air bubbles.
In order to improve the mixing efficiency, the liquid path flowing out of the jet pump 2 is divided into two parallel branches, each branch is provided with a mixer 5, and powder output from the powder tank 3 is mixed with base liquid in the mixer 5 to form mixed concentrated liquid. Two groups of mixers 5 are arranged, and the circulation state of the branch can be controlled by controlling the valve switch on the branch, thereby improving the mixing efficiency. Of course, in the actual fracturing operation process, more mixers 5 can be arranged, and different mixers 5 can mix different powders simultaneously, so that more complex process requirements can be met.
The mixing system of the invention also comprises a liquid adding pipe 12 which is used for adding other chemical reagents and can be added to any link in the equipment according to the process requirements.
The mixer 5 of the present invention may also be provided with a branch for adding liquid or powder, and may be added with two different additives simultaneously, either liquid or powder, or liquid and liquid, or two powders.
The liquid discharge manifold comprises a discharge centrifugal pump 10, a third flow meter 16 and a discharge header 11, wherein the discharge centrifugal pump 10 is connected with the third flow meter 16, and the third flow meter 16 is connected with the discharge header 11 and is used for controlling the flow of discharge liquid. The discharge header 11 is connected with the inlet end of the discharge centrifugal pump 10 and is used for directly discharging the mixed liquid out of the system and controlling the liquid level of the mixing tank 9.
The outlet end of the liquid discharge manifold is connected with the inlet end of the mixing tank 9 through a pipeline, and the mixed liquid is refluxed to the mixing tank 9 for circular mixing, so that the requirement of fracturing operation on the viscosity of the mixed liquid is met.
In the invention, the outlet end of the liquid discharge manifold is connected with the inlet end of the mixing tank 9 through a pipeline, and the pipeline is provided with the static mixer 7 for increasing the mixing effect and reducing the energy consumption.
In the invention, the outlet end of the liquid discharge manifold is connected with the inlet end of the mixing tank 9 through a pipeline, the pipeline is provided with a static mixer 7, the outlet end of the static mixer 7 is provided with a liquid level control valve 13, the flow in the pipeline can be adjusted, and the liquid level in the mixing tank 9 is stabilized.
The outlet end of the liquid discharge manifold is connected with the inlet end of the second liquid inlet manifold 8, and the mixed liquid is refluxed to the suction pump 6 and is used for repressurization, mixing and multiple mixing, so that the mixing quality of the fracturing fluid is improved.
The working principle is as follows: as shown in fig. 1 and 2, a valve of a first liquid inlet header 1 is opened, base liquid enters a mixer 5 after being pressurized by an injection pump 2, an outlet valve of a screw conveyor 4 is opened, powder of a powder tank 2 enters the mixer 5 through the screw conveyor 4, the base liquid and the powder are mixed in the mixer 5 to form concentrated liquid, the opening state of a parallel branch of the mixer 5 can be controlled by controlling the outlet valve of the mixer 5, and different two additives can be added through the branch of the mixer 5 according to the requirement of actual working conditions. The valve of the second liquid inlet collecting pipe 8 is opened, the concentrated solution in the mixer 5 is diluted by the liquid of the second liquid inlet collecting pipe 8 and then is pressurized for the second time by the suction pump 6, the kinetic energy of the diluted solution is increased, the diluted solution enters the static mixer 7 for secondary mixing, the static mixer 7 can fully utilize the kinetic energy of the mixed solution in the pipeline, and the mixing effect is improved. The mixed liquid after secondary mixing enters a mixing tank 9 and is discharged from a discharge header 11 through a discharge centrifugal pump 10, or a valve between the mixing tank 9 and the discharge header 11 can be opened and directly discharged from the mixing tank 9, so that the liquid level of the mixing tank 9 is further controlled. The mixing system also includes a liquid addition pipe 12 for adding other chemical reagents, and can be added to any link in the equipment according to the process requirements. When the viscosity of the mixed liquid is not up to the standard, the mixed liquid can flow back to the mixing tank 9 through a pipeline between the outlet end of the liquid discharge pipe and the inlet end of the mixing tank 9 for circular mixing. During actual mixing operation, the static mixer 7 or the combination of the static mixer 7 and the liquid level control valve 13 can be installed on a pipeline according to the property of the mixed liquid and the mixing requirement, then the outlet end of the liquid discharge manifold is directly connected with the inlet end of the second liquid inlet manifold 8, and the mixed liquid directly flows back to the suction pump 6 for repressurization and remixing.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (11)
1. A mixing system is characterized by comprising a mixing module and an output module, wherein the mixing module comprises a first liquid inlet collecting pipe, an injection pump, a powder tank and a mixer, the first liquid inlet collecting pipe is connected with an inlet of the injection pump, an outlet of the injection pump is connected with an inlet of the mixer, and the powder tank provides powder for the mixer; the output module comprises a second liquid inlet collecting pipe, a suction pump, a second flowmeter, a static mixer, a mixing tank and a liquid discharge pipe manifold, wherein the second liquid inlet collecting pipe is connected with an inlet of the suction pump; the outlet of the mixer of the mixing module is connected with the inlet of the suction pump of the output module through a valve, and the mixing module and the output module can be used independently or combined into a whole.
2. The compounding system of claim 1, wherein: the mixing module and the output module can be transported separately or in combination in a package.
3. The compounding system of claim 1, wherein: the mixer is a compound jet mixer or a mixer with a shear pump as a main body.
4. The compounding system of claim 1, wherein: the mixer is provided with more than two groups, and the more than two groups of mixers are connected in parallel between the jet pump and the suction pump.
5. The compounding system of claim 1, wherein: the compounding system also includes a liquid addition header for adding liquid chemicals.
6. The compounding system of claim 1, wherein: the mixer is provided with a branch for adding liquid or powder.
7. The compounding system of claim 1, wherein: the liquid discharge manifold comprises a discharge centrifugal pump, a third flowmeter and a discharge header, wherein the discharge centrifugal pump is connected with the third flowmeter, the third flowmeter is connected with the discharge header, and the discharge header is connected with the inlet end of the discharge centrifugal pump and is used for directly discharging the mixed liquid out of the system.
8. The compounding system of claim 1, wherein: and the outlet end of the liquid discharge manifold is connected with the inlet end of the mixing tank through a pipeline, and the mixed liquid flows back to the mixing tank.
9. The compounding system of claim 1, wherein: the outlet end of the liquid discharge manifold is connected with the inlet end of the mixing tank through a pipeline, and a static mixer is arranged on the pipeline.
10. The compounding system of claim 1 wherein: the outlet end of the liquid discharge manifold is connected with the inlet end of the mixing tank through a pipeline, a static mixer is arranged on the pipeline, and a liquid level control valve is arranged at the outlet end of the static mixer.
11. The compounding system of claim 1, wherein: and the outlet end of the liquid discharge manifold is connected with the inlet end of the second liquid inlet header and is used for returning the mixed liquid to the suction pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911291784.7A CN110787667A (en) | 2019-12-16 | 2019-12-16 | Blending system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911291784.7A CN110787667A (en) | 2019-12-16 | 2019-12-16 | Blending system |
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| CN110787667A true CN110787667A (en) | 2020-02-14 |
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| CN201911291784.7A Pending CN110787667A (en) | 2019-12-16 | 2019-12-16 | Blending system |
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