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Method for coating support agents with modified reactive resin compositions, coated support means and use of the coated support means in fracking-conveying methods

A technology of resin composition and proppant, applied in the field of hydraulic fracturing, can solve the problems of high cost of use and difficult to control product quality, etc.

Inactive Publication Date: 2018-11-09
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages here are the use of costly silicone resins, an additional complex process for chemical modification, and difficulty in controlling product quality in the case of the reaction of two branched polymers

Method used

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  • Method for coating support agents with modified reactive resin compositions, coated support means and use of the coated support means in fracking-conveying methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] In a MOLTENI LABMAX with a stripper and dissolver tray, 450 g novolac "Resin 14772" (Plastics Engineering Company, Sheboygan, USA) was heated to 130°C and melted, during which time nitrogen was passed through the resin.

[0090] When all the resin is melted, stirring is performed for about 10 minutes at a container impact of 10 rpm and a dissolver speed of about 500 rpm. Then add 50g N20 (with 170-230m 2 / g of hydrophilic silica with a BET surface area; available from Wacker Chemie AG) was added in batches (small spoons, volume about 50-100 mL) and stirred at 500 rpm for about 2 minutes in each case. When all the HDK has been added, increase the speed of the dissolver to 4500 rpm, and then continue to stir for 10 minutes. While still hot, the material is then poured onto the PTFE membrane and mechanically stirred. The temperature after homogenization was 165°C. Cooling produces a caramel-colored odorless solid.

Embodiment 2

[0092] Using the method of Example 1, 50g of T30 (with 270-330m 2 / g of BET surface area hydrophilic silica; available from Wacker Chemie AG, Munich, Germany) was added and mechanically stirred. The temperature after homogenization was 171°C. Cooling produces a caramel-colored odorless solid.

Embodiment 3

[0094] Using the method of Example 1, 50g of micron silica (with 25-60m 2 / g of BET surface area hydrophilic silica) was added and mechanically stirred. The temperature after homogenization was 171°C. Cooling produces a caramel-colored odorless solid.

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Abstract

The invention relates to a method for coating support agents with modified reactive resin compositions, and to the use thereof in so-called hydraulic fracturing (=fracking).

Description

Technical field [0001] The present invention relates to a proppant coating method using a modified reactive (reactive, reactive) resin composition, and its use in hydraulic fracturing (= hydraulic fracturing, fracturing, fracking). [0002] The hydraulic crushing method is used in the production of mineral oil and natural gas, and is a method of creating, widening and stabilizing fractures in the rocks of a deposit deep underground, with the purpose of increasing the permeability of the deposit rocks. Therefore, the gas or liquid present therein can flow into the well and be recovered in an easier and more stable manner. [0003] The resulting cracks must be kept open with proppant. The currently available coated or uncoated proppants are brittle and do not have the compressive strength required for production at large depths. Proppant breaking under high pressure releases fine particles that block cracks and reduce oil or gas production. [0004] Compared to uncoated proppants, co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/805C08K3/36C08K2201/006C09D161/06
Inventor 塞巴斯蒂安·克内丹尼尔·卡利门特阿恩特·施洛瑟
Owner WACKER CHEM GMBH
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