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Visualization device and method for detecting sand carrying performance of CO2 fracturing fluid under high pressure dynamic filtration condition

A measurement device and fracturing fluid technology, applied in measurement devices, flow characteristics, indirect flow characteristics measurement, etc., can solve the problems of limited pressure resistance, influence of sand-carrying performance, and no consideration of sand-carrying fluid filtration, etc. The effect of strong safety, simple operation and strong operability

Active Publication Date: 2018-07-17
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 patented technology is only for ordinary conventional fracturing fluids, and its pressure resistance is limited, so it is not suitable for liquid CO under high pressure. 2 Sand-carrying capacity evaluation of fracturing fluid; this device does not take into account that the sand-carrying fluid will leak to the surrounding formations during the fracturing process, and the sand-carrying performance will be affected by dynamic filter loss, which cannot simulate the real conditions in fracturing construction

Method used

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  • Visualization device and method for detecting sand carrying performance of CO2 fracturing fluid under high pressure dynamic filtration condition
  • Visualization device and method for detecting sand carrying performance of CO2 fracturing fluid under high pressure dynamic filtration condition
  • Visualization device and method for detecting sand carrying performance of CO2 fracturing fluid under high pressure dynamic filtration condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A measure of CO 2 A visualization device for sand-carrying performance under high-pressure dynamic fluid loss conditions of fracturing fluids, including a sand-carrying measurement device and an image acquisition device, characterized in that the visualization device also includes a fluid loss measurement device, and the visualization device is connected through a connecting pipeline, The fracturing fluid circulates in the connecting pipeline;

[0056] The sand-carrying measurement device includes a visual inner chamber 6 for simulating the sand-carrying flow process of the fracturing fluid in the fracturing fracture;

[0057] The fluid loss measurement device communicates with the visualized inner cavity 6, and the number of the fluid loss measurement devices is 6 groups, and each group of the fluid loss measurement devices includes a core holder 8 and a core 11, and the core 11 is set on In the core holder 8, the fluid loss measuring device is used for simulating the...

Embodiment 2

[0060] A measurement of CO as described in Example 1 2 A visualization device for sand-carrying performance under high-pressure dynamic fluid loss conditions of fracturing fluids. The difference is that the sand-carrying measurement device also includes a first valve 2, a circulation pump 3, a first The pressure sensor 4, the sand adding device 5, the second back pressure valve 17 and the fourth valve 18 arranged in sequence on the sand-carrying liquid discharge pipe 19, the described sand-carrying liquid injection pipe 1 and the described sand-carrying liquid discharge pipe 19 are respectively Connected to the front side wall and rear side wall of the visualization inner chamber 6;

[0061] Each group of the fluid loss measurement device includes a second valve 7, a core holder 8, a first back pressure valve 12, a third valve 13, and a mass flow meter 14 connected in sequence, and the core holder 8 is provided with 4 temperature sensors 10, pressure sensors 9;

[0062] The ...

Embodiment 3

[0064] A measurement of CO as described in Example 2 2 The visualization device for sand-carrying performance under the condition of high-pressure dynamic filtration of fracturing fluid, the difference is that a first filter screen 16 is set on the outlet end of the visualization inner chamber 6 on the sand-carrying fluid discharge pipe 19 .

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Abstract

The invention relates to a visualization device and method for detecting a sand carrying performance of CO2 fracturing fluid under a high pressure dynamic filtration condition, and belongs to the technical field of oil and gas field fracturing transformation simulation and fracturing fluid sand carrying performance device evaluation. The device comprises a sand carrying measuring device and an image collecting device, and is characterized by further comprising a filtration measuring device, the visualization device is communicated through an associated line, and the fracturing fluid flows through the associated line; the sand carrying measuring device comprises a visualization inner cavity so as to be used for simulating that a sand carrying flow process of the fracturing liquid in a fracturing rift; the filtration measuring device is communicated with the visualization inner cavity so as to be used for simulating influences of different permeability stratum to a filtration process inthe fracturing rift; the image collecting device is used for collecting flow forms of the fracturing liquid carrying sand and analyzing data. In an actual fracturing process, the fracturing liquid flows into the stratum rock matrix along a fracturing liquid flow direction and through a rift wall surface, and with the influences of different permeability of the stratum rock matrix, the device can simulate the changes of filtration performance of the fracturing liquid.

Description

technical field [0001] The invention relates to a method for measuring CO 2 The invention relates to a visualization device and method for sand-carrying performance under high-pressure dynamic filtration conditions of fracturing fluid, and belongs to the technical field of simulating oil and gas field fracturing reconstruction and evaluating the sand-carrying performance of fracturing fluid. Background technique [0002] With the large-scale development of oil and gas reservoirs, fracturing technology has become an important technical means for oil and gas reservoir production stimulation and development. A proppant fracture channel with high conductivity is formed inside. By simulating the actual fracturing process and measuring the fluid loss performance and sand-carrying performance of the sand-carrying fluid, the appropriate fracturing fluid can be selected in the actual fracturing process to ensure the fracturing effect. In the actual fracturing process, in the fractu...

Claims

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Application Information

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IPC IPC(8): G01N11/00G01N11/04G01N15/08
CPCG01N11/00G01N11/04G01N15/0826G01N2011/008
Inventor 李宾飞史大山吕其超李兆敏李爱山左家强刘洋
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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