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Multifunctional thickening agent and preparation method thereof

A thickening agent, multifunctional technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of formation damage, product dispersion and stability deterioration, etc., achieve rapid dissolution, fast dissolution speed, The effect of solving the instability of dispersion system

Active Publication Date: 2021-01-01
四川川庆井下科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to solve the problem of mineral oil damage to the formation, the inventor tried to use a water-soluble dispersing medium, which resulted in poor dispersibility and stability of the product

Method used

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  • Multifunctional thickening agent and preparation method thereof
  • Multifunctional thickening agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1.1 Raw materials:

[0047] Preparation of SDS modified bentonite raw materials:

[0048] By weight, sodium carbonate: 1 part; water: 99 parts; sodium dodecylsulfonate: 2 parts; bentonite: 10 parts;

[0049] Prepare multifunctional thickener raw material of the present invention:

[0050] By weight, water-soluble thickening agent: 30 parts; Acetonide: 55 parts; D-limonene: 4 parts; Suspending agent: 1.5 parts; Water-soluble thickening agent adopts polyacrylamide, and suspending agent adopts SDS modification Bentonite.

[0051] 1.2 Preparation method:

[0052] Include the following steps:

[0053] S1: Preparation of SDS modified bentonite;

[0054] (1) Add water and sodium carbonate to the reaction vessel. After the sodium carbonate is dissolved, add sodium dodecylsulfonate and bentonite to the reaction vessel, start stirring, raise the temperature to 60°C and keep it at 60°C, frequency 40KHZ Ultrasonic vibration and dispersion for 3 hours; modified bentonite semi-...

Embodiment 2

[0061] 2.1 Raw materials:

[0062] Preparation of SDS modified bentonite raw materials:

[0063] By weight, sodium carbonate: 1 part; water: 99 parts; sodium dodecylsulfonate: 2 parts; bentonite: 10 parts;

[0064] Prepare multifunctional thickener raw material of the present invention:

[0065] By weight, water-soluble thickener: 50 parts; acetonide: 45 parts; D-limonene: 3 parts; suspending agent: 1 part, water-soluble thickening agent adopts polyacrylamide, and suspending agent adopts SDS modification Bentonite.

[0066] 2.2 Preparation method:

[0067] Include the following steps:

[0068] S1: Preparation of SDS modified bentonite;

[0069] (1) Add water and sodium carbonate to the reaction vessel. After the sodium carbonate is dissolved, add sodium dodecylsulfonate and bentonite to the reaction vessel, start stirring, raise the temperature to 65°C and keep it at 65°C, frequency 45KHZ Ultrasonic vibration and dispersion for 2.5 hours; modified bentonite semi-finished...

Embodiment 3

[0076] 3.1 Raw materials:

[0077] Preparation of SDS modified bentonite raw materials:

[0078] By weight, sodium carbonate: 1 part; water: 99 parts; sodium dodecylsulfonate: 2 parts; bentonite: 10 parts;

[0079] Prepare multifunctional thickener raw material of the present invention:

[0080] By weight, water-soluble thickening agent: 43 parts; Acetonide: 50 parts; D-limonene: 5 parts; Suspending agent: 2 parts; Water-soluble thickening agent adopts polyacrylamide, and suspending agent adopts SDS modification Bentonite.

[0081] 3.2 Preparation method:

[0082] Include the following steps:

[0083] S1: Preparation of SDS modified bentonite;

[0084] (1) Add water and sodium carbonate to the reaction vessel. After the sodium carbonate is dissolved, add sodium dodecylsulfonate and bentonite to the reaction vessel, start stirring, raise the temperature to 55°C and keep it at 55°C, frequency 35KHZ Ultrasonic vibration and dispersion for 3.5 hours; modified bentonite semi-...

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Abstract

The invention discloses a multifunctional thickening agent and a preparation method thereof. The multifunctional thickening agent is prepared from the following raw materials in parts by weight: 30-50parts of a water-soluble thickening agent, 45-55 parts of solketal, 3-5 parts of D-limonene and 1-2 parts of a suspending agent. The multifunctional thickening agent disclosed by the invention has excellent resistance reducing, salt resisting, sand carrying and viscosity changing capabilities, can realize online viscosity changing operation, has the advantages of a powder thickening agent and anemulsion thickening agent, and is convenient to use; the water-soluble dispersing agent is matched with the D-limonene, and is matched with specially-made modified bentonite, so that the stability ofthe obtained ultra-dispersion system is greatly improved.

Description

technical field [0001] The invention relates to the field of thickeners, in particular to a multifunctional thickener and a preparation method thereof. Background technique [0002] Shale gas refers to the unconventional natural gas that exists in organic-rich mud shale and its interlayers in the state of adsorption or free. The main component is methane. It is a clean and efficient energy resource and chemical industry. raw material. [0003] The matrix permeability of shale reservoirs is extremely low, and in most cases there is no natural productivity. Large-scale fracturing of the reservoirs is necessary to artificially increase the formation permeability. Shale reservoirs are characterized by high brittleness index and developed natural micro-fractures. The volume fracturing idea of ​​"large displacement, large fluid volume, and low sand concentration" is adopted for fracturing, and natural fractures are connected with low-viscosity slick water fracturing fluid , form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/66C09K8/68C09K8/88
CPCC09K8/665C09K8/68C09K8/882C09K2208/28
Inventor 李嘉李建忠孙亚东张祥枫吴越于世虎张晓虎陈星宇代清唐浩陈斯瑜罗娇周怡吴凯
Owner 四川川庆井下科技有限公司
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