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Alcohol-soluble slickwater system for fracturing as well as preparation method and application of alcohol-soluble slickwater system

A slick water, alcohol-soluble technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of low polymer addition, high use cost, poor resistance reduction rate, etc., to inhibit swelling, reduce the use of and transportation costs, the effect of enhancing suspension performance

Active Publication Date: 2021-02-19
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

However, it still has the problems of low polymer addition, high cost of use, low viscosity at low concentration, and poor resistance reduction rate, which seriously restricts its application in oilfield production.

Method used

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  • Alcohol-soluble slickwater system for fracturing as well as preparation method and application of alcohol-soluble slickwater system
  • Alcohol-soluble slickwater system for fracturing as well as preparation method and application of alcohol-soluble slickwater system
  • Alcohol-soluble slickwater system for fracturing as well as preparation method and application of alcohol-soluble slickwater system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of alcohol-soluble slippery water system:

[0027] 1.1 Raw materials:

[0028] Each raw material is by weight percentage, as shown in table 1 below:

[0029] Table 1 Embodiment 1 raw material list

[0030]

[0031] 1.2 Preparation method:

[0032] Put the organic alcohol into the reaction vessel, control the stirring rate at 2000r / min, add nanoparticles, surfactant, and anionic polyacrylamide in sequence, adjust the stirring rate to 1500r / min after the addition, and stir for 30 minutes to complete the fracturing process. Preparation of alcohol-soluble slippery water system.

Embodiment 2

[0034] Preparation of alcohol-soluble slippery water system:

[0035] 2.1 Raw materials:

[0036] Each raw material is by weight percentage, as shown in table 2 below:

[0037] Table 2 Embodiment 2 raw material table

[0038]

[0039] 2.2 Preparation method:

[0040] Put the organic alcohol into the reaction vessel, control the stirring rate at 3000r / min, add nanoparticles, surfactant, and cationic polyacrylamide in sequence, adjust the stirring rate to 1000r / min after the addition, and stir for 20 minutes to complete the fracturing process. Preparation of alcohol-soluble slippery water system.

Embodiment 3

[0042] Preparation of alcohol-soluble slippery water system:

[0043] 3.1 Raw materials:

[0044] Each raw material is by weight percentage, as shown in the following table 3:

[0045] Table 3 Embodiment 3 raw material table

[0046]

[0047] 3.2 Preparation method:

[0048] Put the organic alcohol into the reaction vessel, control the stirring rate at 2500r / min, add nanoparticles, surfactant, and anionic polyacrylamide in sequence, adjust the stirring rate to 1800r / min after the addition, and stir for 60 minutes to complete the fracturing process. Preparation of alcohol-soluble slippery water system.

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PUM

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Abstract

The invention discloses an alcohol-soluble slickwater system for fracturing as well as a preparation method and application of the alcohol-soluble slickwater system, and relates to the technical fieldof acid fracturing agents. The slickwater system is composed of the following components in percentage by weight: 20.0-60.0% of a polyacrylamide polymer, 0.5-4.0% of nano particles, 0.1-3% of a surfactant, and the balance of organic alcohol.

Description

technical field [0001] The invention relates to the technical field of acidified fracturing agents, in particular to an alcohol-soluble slippery water system for fracturing, a preparation method and application thereof. Background technique [0002] In recent years, my country's dependence on foreign natural gas has increased year by year. In 2019, the proportion of imports has increased to 45%, making it the world's largest importer of natural gas. Therefore, increasing my country's natural gas production and ensuring energy supply capacity is the only way to maintain national security and maintain the stability of people's livelihood. The latest data shows that my country's shale gas reserves have reached 31.6 trillion cubic meters, ranking first in the world. Therefore, vigorous development of shale gas can effectively alleviate the tension in my country's natural gas supply shortage. Large-scale fracturing operations are the main production stimulation measures in my co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68
CPCC09K8/68C09K8/882C09K8/602C09K8/604C09K8/885Y02A20/204
Inventor 李嘉王鹏祥孙亚东张晓虎张祥枫吴越于世虎陈星宇代清周怡
Owner 四川川庆井下科技有限公司
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