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Fracturing Pump

a fracturing pump and pump body technology, applied in the direction of positive displacement liquid engines, borehole/well accessories, liquid fuel engines, etc., can solve the problems of more and more occupied, more complicated pump manifold layout, and single-machine power of fracturing pumps that is difficult to boost, etc., to achieve high working displacement, large single-machine power, and small occupied area

Inactive Publication Date: 2015-03-19
SICHUAN HONGHUA PETROLEUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a fracturing pump that has large power, high working displacement, small size, and high accuracy of speed and torque control. Compared to previous pumps, it has a direct motor drive, simplifying the structure and reducing failure rates. The invention also has more power and displacement, making it suitable for larger operations and reducing occupied space and connection pipelines. This is more reliable, green, and suitable for environmental protection.

Problems solved by technology

Due to restriction of mechanical structure, the capacity of car and roads and bridges, the single-machine power of the fracturing pump is hard to boost.
For large-scale hydraulic fracturing operations, more fracturing pump cars are needed to meet the displacement requirements, this causes more and more occupied field area, more complicated pump manifold layout, long preparation, high cost, hard to control, low control accuracy, poor response, and high security risk.
However, the transmission solution has the following defects: first of all, the fracturing set has a complicated structure and larger occupied space; secondly, there are many devices needed to be maintained regularly to cause high cost; furthermore, there is low accuracy for the fracturing pump speed and torque control due to the hydraulic transmission box.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

embodiment 1

[0026]A fracturing pump and its support apparatus comprise three fracturing cars, a sand mixing car, a measuring car and their control systems. The fracturing pump comprises a cooling device and a control device. A motor is coupled on a shaft of the fracturing pump. The cooling device comprises an air-cooled device for cooling a rotor of the pump motor and a water-cooled device for cooling a stator of the pump motor. The control device is connected with the pump motor and the cooling device. A token ring is made with a shielded twisted pair by a Profibus for connection for the fracturing pump, the sand mixing car and the measuring car etc to make a network stable and easy scalable. Each of the apparatus is connected to the network with a Network Access device with bandwidth of 1.5 Mb / s.

[0027]The signal of a sensor of the fracturing pump is transmitteed to a S7-300PLC of the measuring car via a distribution-type I / O apparatus. The S7-300PLC is connected with the Profibus monitoring l...

example 2

[0031]Being the same with example 1, preferably, two fracturing pumps are provided on a fracturing car. A cooling device is mounted between the two fracturing pumps.

example 3

[0032]Being the same with Example 2, preferably, a cooling device on a fracturing pump comprises an air-cooled device for the pump motor and a water-cooled device for the pump motor.

[0033]As shown in FIG. 2, the air-cooled device for the pump motor comprises a fan motor 3 and a pump motor core 4. One end of the fan motor 3 is provided with a fan 2 on which an air inlet 1 is provided. The pump motor core 4 is also provided thereon with a fan 5 on which an air outlet 6 is provided. The working principle of the air-cooled device for the pump motor is as follows: cooled air enters into the fan 2 via the air inlet 1 to make the cooled air compresssed by the centrifugal force of the fan 2, and the compressed air enters into the inner part of the pump motor, and takes away the heat generated by the pump motor core 4. The centrifugal force generated by the rotation of the fan 5 makes a lower pressure area near the fan 5 to fast the flow of the air in the pump motor, and discharges the heat ...

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Abstract

The invention discloses a fracturing pump, comprising a cooling device and a control device, wherein a motor is connected on an shaft of the fracturing pump, the cooling device comprises an air-cooled device for cooling a rotor of the motor and a water-cooled device for cooling a stator of the motor, and the control device is connected with the motor and the cooling device, respectively. The fracturing pump in the invention adopts a structure directly driven by the motor, thus breaking the form of a transmission structure of a diesel engine of the conventional fracturing pump added with a transmission tank, simplifying the structure of the entire fracturing pump, reducing the apparatus mounted on a fracturing car, decreasing failure rate of the apparatus, and becoming more safe and reliable.

Description

FIELD OF THE INVENTION[0001]The invention relates to an oil-field fracturing apparatus, particularly to a fracturing pump.BACKGROUND OF THE INVENTION[0002]In order to improve the recovery of the oil and gas resources for the best economic benefits, a recovery process of oil and gas reservoir (i.e., fracturing) is widely used for output boosting for different geological structures and reservoir characteristics, of which a fracturing set is a key apparatus which includes a core apparatus—a fracturing pump car. currently, widely used fracturing pump cars are provided with 2000 hp˜2500 hp fracturing pump. The fracturing pump cars have the same transmission structure, i.e., driven by a diesel engine on the car with a gearbox and a cardan shaft. The pump working displacement and the pressure is controlled by speed of the diesel engine with the gearbox. Due to restriction of mechanical structure, the capacity of car and roads and bridges, the single-machine power of the fracturing pump is ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04B53/08E21B43/00F04B1/00
CPCF04B53/08E21B43/00F04B1/00F04C29/045F04B47/02E21B43/2607
Inventor ZHANG, MITANG, PINGWANG, XINJUNWANG, JIANGYANGCHEN, TAOZHANG, BINXIE, MEIYINGZHAO, YONGCAN
Owner SICHUAN HONGHUA PETROLEUM EQUIP
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