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Resin coated proppant slurry compositions and methods of making and using same

A proppant and suspension technology, which is applied in chemical instruments and methods, drilling compositions, earthwork drilling, etc., can solve problems that cannot be used to prepare resin-coated proppant suspensions, etc.

Inactive Publication Date: 2010-06-23
TRICAN WELL SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] None of these flotation methods can be used to prepare resin-coated proppant suspensions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] To a glass bottle (200ml) was added 100ml of water and 25 grams of 20 / 40 US mesh resin coated proppant (SiberProp). Shake the glass bottle vigorously, then allow the proppant to settle. Gas bubbles can be observed attaching to the surface of the proppant, while a layer of proppant floats on top. Tilt the glass bottle slowly, and the precipitated proppant will move as a coagulated whole. Example 2

example 2

[0032] To a glass bottle (200ml) was added 100ml of water and 25 grams, 20 / 40 US mesh resin coated proppant (SiberProp) and 25 grams, 20 / 40 regular frac sand. Shake the glass bottle vigorously, then let stand to allow the particles to settle. It can be observed that air bubbles are attached to the surface of the proppant, whereas the surface of the sand has no air bubbles attached. All the sand quickly sinks to the bottom of the bottle, and a layer of proppant floats up on top. Example 3

example 3

[0033] To a glass bottle (200ml) was added 100ml of water and 25 grams of 20 / 40 US mesh resin coated proppant (Atlas PRC) and a drop of hexanol (approximately 0.03ml). Shake the glass bottle vigorously, then allow the proppant to settle. It can be observed that air bubbles are attached to the surface of the proppant, and a layer of proppant floats on top, and this floated proppant accounts for about 30% of the total proppant content. Tilt the glass bottle slowly, and the precipitated proppant will move as a coagulated whole. Example 4

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Abstract

A resin coated proppant slurry and a method for preparing a slurry is provided where the resin coated proppant particles are rendered less dense by attaching stable micro-bubbles to the surface of the resin coated proppants. A collector or frother may be added to enhance the number or stability of bubbles attached to the proppants. This method and composition finds use in many industries, especially in oil field applications.

Description

technical field [0001] The present invention relates to proppant sand suspension mixtures and methods for their preparation and use. Background technique [0002] Hydraulic fracturing is commonly used to increase the recovery of oil and gas. In a method of hydraulic fracturing, a fracturing fluid is injected through a wellbore into a subterranean structure, creating a pressure sufficient to form fractures, thereby increasing the recovery of oil and gas. Typically, particles called proppants are suspended in fracturing fluids and used as a suspension in fracturing. Proppants include sand, resin-coated proppants, ceramsite, glass beads, bauxite (aluminum oxide), and the like. Among them, sand is currently the most commonly used proppant. Commonly used fracturing fluids include various water and hydrocarbon gels. Liquid carbon dioxide and nitrogen are also used in fracturing. The most commonly used fracturing fluids are water-based fluids containing cross-linked polymers, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/805C09K8/62
Inventor 张科伟
Owner TRICAN WELL SERVICE