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Modified water-soluble dietary fiber thickening agent and preparation method thereof

A technology for dietary fiber and thickener, which is applied to chemical instruments and methods, drilling compositions, etc., can solve the problems of difficulty in degrading thickeners, complicated methods, and residues, and is suitable for large-scale production and application. Inexpensive and easy-to-get results

Inactive Publication Date: 2018-11-06
SHANDONG YUWANG ECOLOGY FOOD IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the by-products produced in the process of preparation and synthesis of this method will make crosslinking difficult, and the obtained thickener is not easy to degrade, has residues, and is easy to cause damage to the air layer
[0005] Patent application CN106046253A discloses a supramolecular surface active micro-electric clean fracturing fluid thickener for shale gas and its preparation method; great difficulty
[0006] In summary, the existing fracturing fluid thickeners and their preparation methods still have problems such as high cost, low degradation rate, and complicated methods. Therefore, it is necessary to develop a fracturing fluid thickener with better performance and low price .

Method used

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  • Modified water-soluble dietary fiber thickening agent and preparation method thereof
  • Modified water-soluble dietary fiber thickening agent and preparation method thereof
  • Modified water-soluble dietary fiber thickening agent and preparation method thereof

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preparation example Construction

[0050] As described in the background art, existing fracturing fluid thickeners and preparation methods thereof still have problems such as high cost, low degradation rate, and complicated methods. Therefore, the present invention provides a modified water-soluble dietary fiber thickener and The preparation method of the present invention will now be further described in conjunction with specific embodiments.

[0051] For the water-soluble dietary fiber extracted from soybean dregs in the embodiment of the present invention, see the enterprise standard number: Q / YWST0007S-2018, http: / / www.sdfda.gov.cn In addition, other existing methods can also achieve the extraction of water-soluble dietary fiber from soybean dregs, such as "Research on Extraction of Soybean Water-soluble Dietary Fiber", Wu Hui et al., 2008; doi:10.3969 / j.issn.1673-9078.2008 04.011, technicians can choose according to their needs, and the present invention does not make specific limitations.

Embodiment 1

[0053] 1. A preparation method of a modified water-soluble dietary fiber thickener, comprising the following steps:

[0054] (1) Add 2 parts by weight of water-soluble dietary fiber and 0.02 parts by weight of xanthan gum to 40 parts by weight of deionized water, stir at 45°C, and add 1 part by weight to a mass fraction of 1% after it is completely dissolved Then heat the sodium carbonate solution to 70°C for 50 minutes, and cool to 35°C after the heat preservation is completed, centrifuge to remove the bottom separation sediment, and take the upper separation for use;

[0055] (2) Add 0.1 parts by weight of a bacterial cellulase aqueous solution with a mass fraction of 10% to the upper separation in step (1), stir, heat to 45°C for 60 minutes, cool to 35°C after completion of the heat preservation, and centrifuge, Remove the separated sediment at the bottom, and take the upper separation for use;

[0056] (3) In the upper separation of step (2), 0.002 parts by weight of formaldehyd...

Embodiment 2

[0062] 1. A preparation method of a modified water-soluble dietary fiber thickener, comprising the following steps:

[0063] (1) Add 8 parts by weight of water-soluble dietary fiber and 0.2 parts by weight of xanthan gum to 45 parts by weight of deionized water, stir at 50°C, and add 10 parts by weight to 1% after being completely dissolved Then heat the sodium carbonate solution to 75°C for 55 minutes, cool to 40°C after the heat preservation is completed, centrifuge to remove the bottom separation sediment, and take the upper layer separation for use;

[0064] (2) Add 1 part by weight of a bacterial cellulase aqueous solution with a mass fraction of 10% to the upper separation in step (1), stir, heat to 50°C for 65 minutes, cool to 40°C after completion of the heat preservation, and centrifuge, Remove the separated sediment at the bottom, and take the upper separation for use;

[0065] (3) Add 0.02 parts by weight of formaldehyde and 5 parts by weight of anionic polyacrylamide wit...

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Abstract

The invention relates to a modified water-soluble dietary fiber thickening agent and a preparation method thereof, and belongs to the technical field of chemicals for oil and gas exploitation. Water-soluble dietary fibers extracted from hulled, de-oiled and deproteinized soybean dregs are taken as raw materials, and are modified by water-soluble dietary fibers, xanthan gum, a sodium carbonate solution, bacterial cellulose, formaldehyde, polyacrylamide and polyethylene polyamine to obtain the thickening agent, soybean dregs are quite abundant in China, and are obtained easily, therefore, the preparation method is simple, the cost is low, and the prepared thickening agent is good in performance and is easily degraded, residues are not generated, and the application prospect is good.

Description

Technical field [0001] The invention belongs to the technical field of chemicals used in oil and gas development, and in particular relates to a fracturing fluid thickener required for conventional or unconventional oil and gas exploitation fracturing technology and a preparation method thereof Background technique [0002] The purpose of formation fracturing technology is to increase the permeability of the formation through fracturing to achieve the goal of increasing the production of conventional and unconventional oil and gas reservoirs. When configuring the fracturing system, the thickener is the most used. When fracturing the formation, thickener is used as the main raw material (about 95% or more), and crosslinking agent and other auxiliary agents are used to make the thickener form a gel-like substance, which will carry sand into the cracks of the formation after fracture. The fracturing sand plays a supporting role to prevent the formation permeability from not being i...

Claims

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Application Information

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IPC IPC(8): C09K8/68C08J3/24C08L5/06C08L5/14C08L5/00C08L5/02C08L33/26
CPCC08J3/246C08J2305/00C08J2305/06C08J2305/14C08J2405/00C08J2405/02C08J2405/06C08J2405/14C08J2433/26C09K8/602C09K8/685C09K8/882C09K8/885C09K8/887C09K8/90
Inventor 刘汝萃张恒明辛寅昌
Owner SHANDONG YUWANG ECOLOGY FOOD IND
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