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Sand adding device and sand adding method for foam pipe flow

A technology of foam and pipe flow, which is applied in the direction of educational appliances, instruments, teaching models, etc., can solve the problems of not being able to control the sand ratio in real time, the sand particles cannot flow out, and the sand ratio is large, so as to achieve convenient and fast opening and closing, and prevent liquid leakage , the effect of simple operation

Active Publication Date: 2016-05-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent has the following defects: the sand particles cannot flow out of the sand tank smoothly; the specific gravity of the sand is too large, and the sand ratio cannot be controlled in real time

Method used

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  • Sand adding device and sand adding method for foam pipe flow
  • Sand adding device and sand adding method for foam pipe flow

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The present invention relates to a sand adding device for foam pipe flow, the sand adding device comprises a sand adding tank 5, a support frame 7, a motor 2, a coupling 3, a conveyor 6, a valve device, and a frame 8. The top of the sand filling tank 5 is provided with a sand filling port, and the bottom is connected to the conveyor 6 through a flange device 11, and one end of the conveyor 6 is connected to the motor 2 through a coupling 3, and under the action of the motor 2, the sand filling tank 5 The sand body flows into the experimental pipe section through the conveyor 6, the other end of the conveyor 6 is provided with a valve device, the support frame 7 is used to support the sand adding tank 5, and the frame 8 is used to support the whole sand adding device, so The sand adding device also includes a high-pressure gas source 9, which is connected to the sand tank 5 through a connecting pipe 10, and the working pressure of the high-pressure gas source 9 is 3MPa; ...

Embodiment 2

[0036] According to the sand adding device described in Embodiment 1, the difference is that the sand adding device also includes a frequency converter 1 and a reducer 4, the frequency converter 1 is connected to the motor 2, and the motor 2 and the coupling A reducer 4 is connected between the shafts 3;

[0037] The advantage of the design here is that the frequency converter 1 changes the frequency of the motor 2 by changing the frequency of the three-phase alternating current, and then changes the speed of the conveyor 6 through the reducer 4 to adjust the flow rate of the sand body, thereby achieving the purpose of real-time control of sand ratio.

Embodiment 3

[0039] According to the sand adding device described in Embodiment 1, the difference is that the valve device includes two flange devices 11 and a spherical valve 12, and the spherical valve 12 is connected between the two flange devices 11 , the flange device 11 is detachable, and can be processed into flange diameters D of different sizes according to the diameter of the experimental pipe section. The angle of the flange device 11 is adjustable, and the internal middle position of the flange device 11 is A sealing gasket is added, and the connection between the flange device 11 and the conveyor 6 is sealed by a raw material belt;

[0040] The advantage of the design here is that the valve device ensures that the liquid does not pour back at the beginning of the experiment; the connection between the flange device 11 and the conveyor 6 is sealed by a raw material belt, which is convenient for connection with the test pipe section and effectively prevents liquid leakage; the sp...

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Abstract

The invention relates to a sand adding device for foam pipe flow and a sand adding method thereof. The sand adding device includes a sand adding tank, a support bracket, a motor, a coupling, a conveyor, a valve device, and a rack. The top end of the sand adding tank is provided with a sand adding opening, and the bottom portion of the sand adding tank is connected with the conveyor through a flange device. One end of the conveyor is connected with the motor through the coupling. Under the action of the motor, the sand in the sand adding tank flows into an experiment pipe section through the conveyor. The other end of the conveyor is provided with the valve device. The support bracket is used to support the sand adding tank. The rack is used to support the whole sand adding device. The sand adding device further includes a high-pressure gas source. The high-pressure gas source is connected with the sand adding tank through a connection pipe. The working pressure range of the high-pressure gas source is from 0MPa to 25MPa. According to the invention, the sand can be successfully added into the experiment pipe section, so that the sand ratio can be controlled on a real-time basis.

Description

technical field [0001] The invention relates to a sand adding device for foam pipe flow and a sand adding method thereof, belonging to the technical field of petroleum exploitation. Background technique [0002] In recent years, the application of foam fluid in oilfield development has become more and more extensive. Foam is not only used in foam drainage and foam control and flooding, but also in foam fracturing, foam carrying gravel packing, and foam sand flushing. , so it is very necessary to study the sand-carrying flow law of foam through pipe flow experiments indoors. However, the foam-carrying sand flow involves solid-liquid-gas three-phase flow, the way of adding the solid phase, and the mixing order of the three phases are very important. The maximum sand-carrying capacity of the foam is restricted by many factors, and there are various sand-adding methods. At present, the most common sand-adding method is to directly mix the quartz sand with the foaming agent aque...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B25/02
Inventor 黄善波李兆敏贾祯李松岩李宾飞吕其超田帅李嘉
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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