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Testing method of microscale tension of two self-polymeric proppant particles

A test method and proppant technology, applied in the direction of measuring devices, instruments, and mechanical devices, etc., can solve the problems of objective evaluation of the cohesion performance of refractory self-polymerizing proppants, etc.

Inactive Publication Date: 2015-07-29
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

Affected by various external factors, it is obvious that this conventional method is difficult to objectively evaluate the cohesion performance of self-polymerizing proppant for high-speed channel fracturing.

Method used

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  • Testing method of microscale tension of two self-polymeric proppant particles
  • Testing method of microscale tension of two self-polymeric proppant particles
  • Testing method of microscale tension of two self-polymeric proppant particles

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and example the present invention will be further described:

[0024] Such as Figure 1-3 Shown, a kind of testing method of micro-tension between two self-aggregating proppant microparticles of the present invention, the technical scheme comprises the following steps:

[0025] (1) Prepare 500ml of KH-560 coupling agent solution with a mass fraction of 0.5% to 1.0%, and add acetic acid to adjust its pH value to between 3.5 and 5.5;

[0026] (2) Weigh 100g of 20 / 40 mesh ceramsite proppant commonly used in oil field fracturing, first wet the surface of ceramsite proppant with distilled water, then mix with coupling agent solution and stir at 200r / min for 15 minutes, Take out and dry;

[0027] (3) Weigh 3g of bisphenol A epoxy resin and 47g of proppant treated with coupling agent, mix them and place them under the sand mixing mixer at a speed of 400r / min for 3 minutes to prepare Obtain self-aggregating proppant with uniform...

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Abstract

The invention relates to an evaluation method of the cohesiveness performance of a self-polymeric proppant for high-speed channel fracturing, in particular to a testing method of the microscale tension of two self-polymeric proppant particles. The method mainly comprises the following steps: preparing a self-polymeric proppant sample with a uniform coating; setting the temperature state; smearing layers of asphalt on particle-fixing platforms; fixing a ceramsite proppant; precisely adjusting the working position; observing particles through a computer; resetting the tension; starting the test; retesting; treating after the test. The method overcomes the defect in traditional methods that the cohesiveness performance of the self-polymeric proppant for high-speed channel fracturing can only be qualitatively observed and evaluated but cannot be quantificationally tested, and generates certain benefits.

Description

technical field [0001] The invention relates to a method for evaluating the cohesion performance of a self-aggregating proppant used in high-speed channel fracturing, in particular to a method for testing the micro-pulse force between two self-aggregating proppant particles. Background technique [0002] High-speed channel fracturing is a new type of fracturing technology that has emerged in the past two years. The formation of high-speed oil and gas seepage channels lies in the fact that proppant can gather in fractures and form proppant columns scattered with each other instead of uniform sanding, so that fractures are formed by "Surface" support becomes "point" support, and a stable channel network is formed inside the fracture, which greatly reduces oil and gas flow resistance and realizes infinite diversion. In addition to adding fibers and adding pulsed sand, it is also necessary to modify the surface of the proppant to enable "self-aggregation". Domestic research on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04
Inventor 张贵才浮历沛葛际江孙铭勤蒋平廖凯丽李田靓
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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