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Skid-mounted liquid additive accurate adding device and method

A liquid additive, adding device technology, applied in the direction of using electrical device flow control, instrumentation, control/regulation system, etc.

Pending Publication Date: 2020-10-27
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of precise addition of various liquid additives in the process of fracturing construction liquid configuration, the present invention provides a skid-mounted precise addition device and method for liquid additives

Method used

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  • Skid-mounted liquid additive accurate adding device and method
  • Skid-mounted liquid additive accurate adding device and method

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Experimental program
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Effect test

Embodiment 1

[0034] This embodiment relates to a skid-mounted liquid additive precise adding device, such as figure 1 As shown, it includes at least a skid frame 10 on which a variable frequency motor 1, a liquid storage tank 2, a liquid addition pump group and a liquid addition skid mixing manifold 11 are installed, and the liquid addition pump group is composed of a plurality of liquid addition pumps. The pumps 4 are formed in parallel, the liquid inlet of each liquid filling pump 4 is connected with the liquid storage tank 2 respectively, and the liquid outlet of each liquid filling pump 4 is divided into two paths, one of which is directly connected to the sand mixer or the sand mixer through the discharge manifold 9. The upper liquid manifold 7 of the mixing truck, the other way is connected to the liquid inlet of the mixing manifold 11 through the discharge manifold 9, and the liquid outlet of the mixing manifold 11 is connected to the sand mixer or the mixing truck. Liquid manifold ...

Embodiment 2

[0037] On the basis of Example 1, further, as figure 1 As shown, a control system 14 is also installed on the skid frame 10 , and the variable frequency motor 1 , the liquid filling pump 4 , the first automatic control valve 12 , and the second automatic control valve 13 are respectively electrically connected to the control system 14 . It is worth mentioning that the control system 14 adopts the control method of self-adaptive negative feedback. It only needs to adjust the addition and displacement of one liquid filling pump, and the system will adjust the discharge and displacement of other liquid filling pumps in real time according to different liquid formulas. .

[0038] Further, a flow control valve 5 , a mass flow meter 6 and a pressure transmitter 8 are installed on the discharge manifold 9 . The flow control valve 5 is a one-way valve, and the liquid can only pass in one direction, which can prevent the backflow of the liquid in the sand mixer or the upper liquid man...

Embodiment 3

[0043] Further, as figure 1 As shown in the figure, the skid-mounted liquid additive precise adding device also includes a remote data acquisition system 18, which is connected to the control system 14 in communication, and adopts the RS485 communication protocol to ensure data transmission during the working process. Stable and normal. The control system 14 completes the flow control of the liquid filling pump 4 and the on-off control of the first automatic control valve 12 and the second automatic control valve 13, and simultaneously controls the high-precision mass flowmeter 6 and the pressure transmitter on the discharge manifold. The value of the instrument is collected in real time and transmitted to the remote data collection system 18 of the instrument vehicle.

[0044] It is worth mentioning that the remote data acquisition system mainly collects and displays the data of liquid additives added to the device in real time in the instrument car, and can display the flow...

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Abstract

The invention provides a skid-mounted liquid additive accurate adding device and method. The device at least comprises a prying frame, and a variable frequency motor, aliquid storage tank, liquid adding andpump injectionsystems and aliquid adding pry mixing manifold installed on the prying frame. A plurality of sets of liquid adding and pump injectionsystems are arranged; a plurality of sets of liquid adding and pump injectionsystems are arranged in parallel; each set of liquid adding andpump injection system at least comprises a liquid adding pump; the power input end of the liquid adding pump is connected with the power output end of the variable frequency motor; a liquid inlet of the liquid adding pump is communicated with the liquid storage tank, a liquid outlet of the liquid adding pump is divided into two paths, one path is directly connected with a liquid feeding manifold of a fracturing blender truck or a blending truck, the other path is connected with a liquid inlet of the liquid adding pry mixing manifold, and a liquid outlet of the liquid adding pry mixing manifold is connected with a liquid feeding manifold of the fracturing blender truck or the blending truck. According to the device, the link of manual mixing of liquid additives is omitted, the flow meter with higher precision is adopted for metering the liquid adding proportion in real time, accurate preparationof fracturing liquid is effectively achieved, the labor intensity of personnel is reduced, and the fracturing construction quality is improved.

Description

technical field [0001] The invention belongs to the technical field of fracturing equipment for oil and gas wells, and in particular relates to a skid-mounted liquid additive precise adding device and method. Background technique [0002] In recent years, fracturing has become an important method for effective stimulation and stimulation of upper and ancient reservoirs in the Ordos Basin, and the quality of fracturing fluid is an important guarantee for whether the fracturing construction is successfully completed and whether the reservoir achieves the effect of stimulation. At present, the addition of various liquid additives in the fracturing construction process mainly relies on the sand mixer and the liquid addition pump of the mixing vehicle. As a multi-functional fracturing equipment, the sand mixer is heavy in the liquid addition system, and it is easy to cause liquid addition. The status quo of system failure and unstable work. At the same time, in the process of fr...

Claims

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Application Information

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IPC IPC(8): G05D7/06
CPCG05D7/0688
Inventor 柴龙钟新荣兰建平白明伟许金正杨德勇车昊阳叶赛侯光东邓斌奇刘广春乔晓东陈浩
Owner BC P INC CHINA NAT PETROLEUM CORP
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