CN114412428A - Liquid supply system for fracturing truck and fracturing truck - Google Patents
Liquid supply system for fracturing truck and fracturing truck Download PDFInfo
- Publication number
- CN114412428A CN114412428A CN202111564712.2A CN202111564712A CN114412428A CN 114412428 A CN114412428 A CN 114412428A CN 202111564712 A CN202111564712 A CN 202111564712A CN 114412428 A CN114412428 A CN 114412428A
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- liquid
- fracturing
- liquid outlet
- supply system
- centrifugal pump
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/2607—Surface equipment specially adapted for fracturing operations
Abstract
The application provides a liquid supply system for fracturing unit truck, it includes: the centrifugal pump is provided with a liquid inlet and a liquid outlet, the liquid inlet is used for being connected with a fracturing liquid storage tank, and the liquid outlet is used for being connected with a fracturing pump of a fracturing truck; the flow control valve is provided with a liquid inlet end and a liquid outlet end, the liquid inlet end is connected with the liquid outlet, and the liquid outlet end is connected with the liquid inlet; the pressure sensor is arranged at the liquid outlet; the flow sensor is arranged at the liquid outlet; the power output end of the power equipment is connected with the centrifugal pump; the controller is electrically connected with the centrifugal pump, the power equipment, the flow control valve, the pressure sensor and the flow sensor respectively; the liquid supply system can automatically convey fracturing liquid in the fracturing liquid storage tank to the fracturing pump; the application has still provided the fracturing unit truck who uses above-mentioned liquid supply system.
Description
Technical Field
The application relates to the technical field of energy exploitation equipment, in particular to a liquid supply system for a fracturing truck and the fracturing truck.
Background
The fracturing truck is an oil field device applied to an oil layer fracturing process, and the main working process of the fracturing truck is as follows: the method comprises the steps of extruding high-pressure and high-discharge liquid (such as water-based fracturing fluid, oil-based fracturing fluid, emulsion fracturing fluid, foam fracturing fluid or acid-based fracturing fluid) with certain viscosity into an oil layer, and filling propping agents such as quartz sand and the like into cracks after the oil layer is extruded into a plurality of cracks so as to improve the permeability of the oil layer, thereby increasing the water injection amount of a water injection well or increasing the oil production amount of the oil well.
At present, fracturing fluid required by a fracturing truck during working needs to be manually controlled to be conveyed, a fluid conveying pump is manually controlled to convey the fracturing fluid to a fracturing pump of the fracturing truck, and the fracturing pump injects the fracturing fluid into an oil layer; however, the manual control method has the problems of complicated operation and large labor loss of workers.
Along with the development of the automation intelligence of the energy mining equipment, the oil field equipment is inevitably developed towards the direction of the simplification of operation, the comfort of the working environment and the safety of production operation, obviously, the existing fracturing truck adopting manual control of fracturing fluid conveying does not accord with the development trend of the oil field equipment, and the simplification of operation and the safety of production operation cannot be realized.
Disclosure of Invention
An object of this application is to provide a liquid supply system and fracturing unit car for fracturing unit car, the liquid supply system of this application can realize giving the fracturing pump automatic feed fracturing fluid.
To this end, in a first aspect, an embodiment of the present application provides a liquid supply system for a fracturing truck, including: the centrifugal pump is provided with a liquid inlet and a liquid outlet, the liquid inlet is used for being connected with a fracturing liquid storage tank, and the liquid outlet is used for being connected with a fracturing pump of a fracturing truck; the flow control valve is provided with a liquid inlet end and a liquid outlet end, the liquid inlet end is connected with the liquid outlet, and the liquid outlet end is connected with the liquid inlet; the pressure sensor is arranged at the liquid outlet; the flow sensor is arranged at the liquid outlet; the power output end of the power equipment is connected with the centrifugal pump; a controller electrically connected to the centrifugal pump, the power plant, the flow control valve, the pressure sensor, and the flow sensor, respectively.
In some possible implementations, the pressure sensor is disposed on the liquid outlet and on a downstream side of the liquid inlet.
In some possible implementations, the flow sensor is disposed on the liquid outlet and on a downstream side of the pressure sensor.
In some possible implementations, the flow control valve includes a one-way valve.
In some possible implementations, the power plant includes an engine.
In some possible implementation manners, the engine further comprises a heater, the heater is electrically connected with the controller, and the heater is used for heating the cooling liquid of the engine.
In some possible implementation manners, a temperature sensor for detecting the temperature of the coolant is arranged on the engine, and the temperature sensor is electrically connected with the controller.
In some possible implementations, the power output of the engine is coupled to the centrifugal pump via a clutch, and the clutch is electrically coupled to the controller.
In a second aspect, the present application also proposes a fracturing truck comprising a liquid supply system for a fracturing truck as described in the first aspect.
In some possible implementation manners, the method further comprises the following steps: a frac car engine configured as the power plant; and the fracturing output pump is communicated with a liquid outlet of the centrifugal pump.
The application provides a liquid supply system and fracturing unit truck for fracturing unit truck, compares with prior art, and its beneficial effect lies in:
a liquid inlet and a liquid outlet of the centrifugal pump are respectively communicated with a fracturing liquid storage tank and a fracturing pump; the controller is respectively electrically connected with the centrifugal pump, the power equipment, the flow control valve, the pressure sensor and the flow sensor, and when liquid supply operation is carried out, the control system controls the power equipment to operate so that the power equipment drives the centrifugal pump to rotate, so that the centrifugal pump can pressurize fracturing liquid and also convey the pressurized pressure to the fracturing pump for oil layer fracturing; pressure sensor can acquire the liquid pressure information of centrifugal pump liquid outlet, and with pressure information transmission to controller, flow sensor can acquire the liquid flow information of centrifugal pump liquid outlet, and with flow information transmission to controller, the flow control valve is used for controlling the liquid pressure size of centrifugal pump output fracturing liquid, if the liquid pressure of centrifugal pump liquid outlet is too big, the controller just can control the flow control valve and open, with this liquid pressure who reduces the centrifugal pump liquid outlet, the liquid pressure when making fracturing liquid arrive the fracturing pump can accord with the requirement of oil reservoir fracturing technology.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts. In addition, in the drawings, like parts are denoted by like reference numerals, and the drawings are not drawn to actual scale.
FIG. 1 is a schematic view of a liquid supply system according to an embodiment of the present application;
FIG. 2 is a schematic illustration of the flow conditions of the fracturing fluid in the present application;
FIG. 3 is a flow chart illustrating operation of the liquid supply system of the present application;
fig. 4 is a schematic view of a fracturing truck of an embodiment of the present application.
Description of reference numerals:
1. a centrifugal pump; 11. a liquid inlet; 12. a liquid outlet; 2. a flow control valve; 21. a liquid inlet end; 22. a liquid outlet end; 3. a pressure sensor; 4. a flow sensor; 5. a power plant; 6. a controller; 7. a heater; 8. a temperature sensor; 9. a clutch; 10. a drive shaft; 100. a fracturing fluid storage tank; 200. and a fracturing output pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As illustrated in fig. 1, 2, in a first aspect, the present application proposes a liquid supply system for a fracturing truck, comprising: the centrifugal pump 1 is provided with a liquid inlet 11 and a liquid outlet 12, the liquid inlet 11 is used for being connected with a fracturing liquid storage tank 100, and the liquid outlet 12 is used for being connected with a fracturing pump of a fracturing truck; the flow control valve 2 is provided with a liquid inlet end 21 and a liquid outlet end 22, the liquid inlet end 21 is connected with the liquid outlet 12, and the liquid outlet end 22 is connected with the liquid inlet 11; the pressure sensor 3 is arranged at the liquid outlet 12; a flow sensor 4 disposed at the liquid outlet 12; the power output end of the power equipment 5 is connected with the centrifugal pump 1; and a controller 6 electrically connected with the centrifugal pump 1, the power equipment 5, the flow control valve 2, the pressure sensor 3 and the flow sensor 4, respectively.
Based on the technical scheme, the liquid supply system can automatically convey the fracturing liquid in the fracturing liquid storage tank 100 to the fracturing pump, and the automatic liquid supply process is as follows: the controller 6 controls the fracturing fluid storage tank 100 to convey fracturing fluid into the centrifugal pump 1, the controller 6 controls the power equipment 5 to operate, the power equipment 5 drives the centrifugal pump 1 to rotate, so that the centrifugal pump 1 can pressurize the fracturing fluid, and the pressurized fracturing fluid is conveyed into the fracturing pump, so that the fracturing pump can apply the fracturing fluid to oil layer fracturing; in the liquid supply system, the pressure sensor 3 can acquire liquid pressure information of the liquid outlet 12 of the centrifugal pump 1 and send the liquid pressure information to the controller 6, the flow sensor 4 can acquire liquid flow information of the liquid outlet 12 of the centrifugal pump 1 and send the liquid flow information to the controller 6, the flow control valve 2 is used for controlling the liquid pressure of the liquid outlet 12 of the centrifugal pump 1, if the liquid pressure of the liquid outlet 12 of the centrifugal pump 1 is overlarge, the controller 6 can control the flow control valve 2 to be opened, liquid pressure with reducing 1 liquid outlet 12 of centrifugal pump for liquid pressure when fracturing fluid reachs the fracturing pump can accord with the pressure requirement of oil reservoir fracturing technology, and if the liquid pressure of 1 liquid outlet 12 of centrifugal pump undersize, controller 6 just can control the output that improves power equipment 5, improves the rotational speed of centrifugal pump 1, with this liquid pressure size that improves 1 liquid outlet 12 of centrifugal pump.
If the liquid pressure of the liquid outlet 12 of the centrifugal pump 1 is not controlled, when the liquid pressure of the liquid outlet 12 of the centrifugal pump 1 is too high, a pipeline at the liquid outlet 12 is damaged, and the fracturing fluid is extruded into the fracturing pump, so that the fracturing pump is damaged to a certain extent, and the control of the fracturing pump on the liquid pressure of the fracturing fluid output by the fracturing pump is not facilitated; the existing fracturing pump is generally a plunger pump, a valve seat switch valve of the plunger pump needs certain pressure to be opened, and if the liquid pressure of a liquid outlet 12 of the centrifugal pump 1 is too small, the liquid pressure of fracturing liquid conveyed into the plunger pump is small, so that the plunger pump cannot be opened, and finally the oil layer fracturing operation is influenced.
The liquid supply system can set a highest target pressure value on the pressure sensor 3, when the liquid pressure of the fracturing liquid conveyed by the liquid outlet 12 of the centrifugal pump 1 is higher than the highest target pressure value, the controller 6 can control the flow control valve 2 to be opened so as to enable a part of the fracturing liquid at the liquid outlet 12 of the centrifugal pump 1 to be separated and flow to the flow control valve 2, and therefore the liquid pressure of the liquid outlet 12 is reduced; the fracturing fluid flowing to the flow control valve 2 is returned to the centrifugal pump 1 via the inlet 11 to be able to be re-pressurised and delivered in the centrifugal pump 1.
The liquid outlet end 22 of the flow control valve 2 can be communicated with the fracturing fluid storage tank 100, so that the fracturing fluid flowing to the flow control valve 2 can return to the fracturing fluid storage tank 100 to be conveyed to the centrifugal pump 1 again later.
In some embodiments, the pressure sensor 3 is disposed on the liquid outlet 12 and located on the downstream side of the liquid inlet 21, the pressure sensor 3 can accurately obtain the liquid pressure information output from the liquid outlet 12 of the centrifugal pump 1 to the fracturing pump, and the controller 6 determines whether to control the power equipment 5 according to the liquid pressure information, so as to increase or decrease the rotation speed of the centrifugal pump 1, increase or decrease the liquid pressure of the output fracturing liquid, or control the opening/closing of the flow control valve 2, so as to decrease or increase the liquid pressure of the liquid outlet 12 of the centrifugal pump 1.
Further, this application locates flow sensor 4 on liquid outlet 12 and is located pressure sensor 3's downstream side, and flow sensor 4 can accurately acquire the concrete numerical value of the flow of the fracturing fluid that centrifugal pump 1's liquid outlet 12 sent toward the fracturing pump to this confirms the inside actual fracturing fluid's of fracturing pump quantity value.
In some embodiments, the flow control valve 2 comprises a check valve, which can prevent the fracturing fluid from flowing back, and ensure that a part of the fracturing fluid flowing out of the liquid outlet 12 of the centrifugal pump 1 can flow to the check valve, so as to smoothly reduce the liquid pressure of the fracturing fluid flowing out of the liquid outlet 12 of the centrifugal pump 1.
In some embodiments, the power equipment 5 includes an engine, and the engine can stably drive the centrifugal pump 1 to rotate, so that the centrifugal pump 1 can pressurize the fracturing fluid in the centrifugal pump and deliver the pressurized fracturing fluid; specifically, this application is mainly applied to the fracturing truck for carry fracturing fluid to the plunger pump of fracturing truck, therefore, in order to simplify the structure of the feed system of this application, so that it can assemble on the fracturing truck better, this application can dispose power equipment 5 into the engine of fracturing truck, like this, only rely on the engine of fracturing truck itself, just can realize driving centrifugal pump 1 and rotate, realize that the feed system normally works. The power equipment 5 is configured as an engine of the fracturing truck, or a power output end of the engine of the fracturing truck is connected with the centrifugal pump 1, and a conventional and known connection mode can be adopted, and is not specifically stated here.
The underground of the northern part of China contains abundant energy and resources which need to be exploited for various industries; in winter and spring, the time limit that the temperature in the north of China is below 0 ℃ is very long, if the power equipment 5 is selected as the engine, when the temperature of the cooling liquid is less than or equal to 0 ℃, the engine is difficult to start; therefore, the liquid supply system further comprises a heater 7, the heater 7 is electrically connected with the controller 6, and the heater 7 is used for heating the cooling liquid of the engine, so that for some engines or engines of the fracturing truck, the heater 7 can heat the cooling liquid of the engines to be more than 0 degrees so as to achieve the starting condition of the engines.
When the temperature of the cooling liquid of the engine reaches 60 degrees, the running state of the engine is optimal, therefore, the temperature sensor 8 for detecting the temperature of the cooling liquid is arranged on the engine, the temperature sensor 8 is electrically connected with the controller 6, the temperature sensor 8 obtains that the temperature of the cooling liquid of the engine reaches 60 degrees and sends the information to the controller 6, and the controller 6 can correspondingly control the engine to run, so that the engine can run in the optimal state, and the running efficiency and the service life of the engine are improved.
In some embodiments, the power output end of the engine is connected with the centrifugal pump 1 through a clutch 9 and a transmission shaft 10, the clutch 9 is electrically connected with the controller 6, when the cooling liquid of the engine reaches 60 degrees, the controller 6 controls the clutch 9 to act, the clutch 9 is engaged, and therefore the power output by the engine can be output to the centrifugal pump 1, so that the centrifugal pump 1 is driven to rotate; in the present application, the connection mode between the engine and the clutch 9 and the connection relationship between the clutch 9 and the centrifugal pump 1 may adopt the existing known structure.
Fig. 3 shows a flow chart of the operation of the liquid supply system when the power plant 5 is an engine, and the detailed operation of the liquid supply system will not be described in detail here.
As shown in fig. 4, in a second aspect, the present application also proposes a fracturing truck comprising a liquid supply system for a fracturing truck as in the first aspect.
Specifically, this fracturing unit truck still includes: a frac car engine configured as a power plant 5; a fracturing output pump 200 communicated with the liquid outlet 12 of the centrifugal pump 1; the engine of the fracturing truck is configured into the power equipment 5, so that the step of additionally arranging the power equipment 5 can be omitted, and the engine of the fracturing truck can be effectively utilized; this fracturing truck can realize carrying fracturing fluid to fracturing output pump 200 automatically to drive fracturing output pump 200 and carry fracturing fluid toward the oil reservoir in, with crowded fracture of oil reservoir.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
It should be readily understood that "on … …", "above … …" and "above … …" in this disclosure should be interpreted in its broadest sense such that "on … …" means not only "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above … …" or "above … …" includes not only the meaning of "above something" or "above" but also includes the meaning of "above something" or "above" with no intervening features or layers therebetween (i.e., directly on something).
Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly as well.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A liquid supply system for a fracturing truck, comprising:
the centrifugal pump is provided with a liquid inlet and a liquid outlet, the liquid inlet is used for being connected with a fracturing liquid storage tank, and the liquid outlet is used for being connected with a fracturing pump of a fracturing truck;
the flow control valve is provided with a liquid inlet end and a liquid outlet end, the liquid inlet end is connected with the liquid outlet, and the liquid outlet end is connected with the liquid inlet;
the pressure sensor is arranged at the liquid outlet;
the flow sensor is arranged at the liquid outlet;
the power output end of the power equipment is connected with the centrifugal pump;
a controller electrically connected to the centrifugal pump, the power plant, the flow control valve, the pressure sensor, and the flow sensor, respectively.
2. The liquid supply system for the fracturing truck of claim 1, wherein the pressure sensor is disposed on the liquid outlet and on a downstream side of the liquid inlet.
3. The liquid supply system for a fracturing truck of claim 2, wherein the flow sensor is disposed on the liquid outlet and downstream of the pressure sensor.
4. The liquid supply system for a fracturing truck of claim 1, wherein the flow control valve comprises a one-way valve.
5. The liquid supply system for a fracturing truck of claim 1, wherein the power plant comprises an engine.
6. The liquid supply system for the fracturing truck of claim 5 further comprising a heater electrically connected to the controller, the heater for heating the coolant of the engine.
7. The liquid supply system for the fracturing truck as claimed in claim 6, wherein a temperature sensor for detecting the temperature of the coolant is provided on the engine, and the temperature sensor is electrically connected with the controller.
8. The liquid supply system for a fracturing truck of claim 5, wherein the power output of the engine is connected to the centrifugal pump through a clutch, the clutch being electrically connected to the controller.
9. Fracturing truck, characterized in that it comprises a liquid supply system for a fracturing truck according to any one of claims 1 to 8.
10. The fracturing truck of claim 9, further comprising:
a frac car engine configured as the power plant;
and the fracturing output pump is communicated with a liquid outlet of the centrifugal pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111564712.2A CN114412428A (en) | 2021-12-20 | 2021-12-20 | Liquid supply system for fracturing truck and fracturing truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111564712.2A CN114412428A (en) | 2021-12-20 | 2021-12-20 | Liquid supply system for fracturing truck and fracturing truck |
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| Publication Number | Publication Date |
|---|---|
| CN114412428A true CN114412428A (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111564712.2A Pending CN114412428A (en) | 2021-12-20 | 2021-12-20 | Liquid supply system for fracturing truck and fracturing truck |
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| US20140352968A1 (en) * | 2013-06-03 | 2014-12-04 | Cameron International Corporation | Multi-well simultaneous fracturing system |
| CN206571480U (en) * | 2017-03-13 | 2017-10-20 | 中石化石油工程机械有限公司第四机械厂 | A kind of fracturing work system |
| CN110500077A (en) * | 2019-08-23 | 2019-11-26 | 大庆石油管理局有限公司 | A kind of branch liquid supply equipment |
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2021
- 2021-12-20 CN CN202111564712.2A patent/CN114412428A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201712524U (en) * | 2010-06-28 | 2011-01-19 | 中原特种车辆有限公司 | Liquid feed vehicle |
| CN102562020A (en) * | 2012-01-10 | 2012-07-11 | 烟台杰瑞石油装备技术有限公司 | Manifold system for sand blender |
| US20140352968A1 (en) * | 2013-06-03 | 2014-12-04 | Cameron International Corporation | Multi-well simultaneous fracturing system |
| CN103335762A (en) * | 2013-07-09 | 2013-10-02 | 中石化石油工程机械有限公司第四机械厂 | Performance test method and performance test device of high-power fracturing pump truck |
| CN206571480U (en) * | 2017-03-13 | 2017-10-20 | 中石化石油工程机械有限公司第四机械厂 | A kind of fracturing work system |
| CN110500077A (en) * | 2019-08-23 | 2019-11-26 | 大庆石油管理局有限公司 | A kind of branch liquid supply equipment |
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