A novel aluminium cross-linking agent for a low-carbon hydrocarbon waterless fracturing fluid, a preparing method thereof and applications of the cross-linking agent

A technology of anhydrous fracturing fluid and low-carbon hydrocarbons, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of cumbersome preparation, high requirements for fracturing construction, and slow solubility of cross-linking agents. The preparation process is simple, the operation cost is reduced, and the effect of shortening the crosslinking time

CN106167699AInactive Publication Date: 2016-11-30SOUTHWEST PETROLEUM UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-11-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

A novel aluminium cross-linking agent for a low-carbon hydrocarbon waterless fracturing fluid, a preparing method thereof and applications of the cross-linking agent are provided. The aluminium cross-linking agent comprises 20-27 parts by mass of a main agent, 3-7 parts by mass of a cross-linking accelerant and 45-60 parts by mass of water. The preparing method includes adding the water of a certain ratio into a reaction container, adding the main agent, reacting under fully stirring, adding the cross-linking accelerant and reacting under stirring for 15 min. The cross-linking agent is high in crosslinking speed with a gelatinizing agent, stable in gel formation, simple and convenient to prepare and low in cost, and a fracturing fluid system has high resistance to temperatures and shearing and good effects on unconventional high-temperature reservoir stratum fracturing.
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Description

technical field

[0001] The invention relates to the technical field of petroleum exploitation, in particular to a novel low-carbon hydrocarbon anhydrous fracturing fluid aluminum crosslinking agent and a preparation method and application thereof. Background technique

[0002] As high-quality energy for national economic and social development, oil and natural gas are of great significance to ensure the sustained and rapid development of national economy and society. In recent years, with the rapid development of my country's economy, the contradiction between supply and demand of oil and gas has intensified, and the import of crude oil has increased year by year. However, conventional oil and gas resources are facing the problem of severe reduction or even depletion of production capacity, which makes shale gas, coal bed methane, tight oil and gas and other unconventional oil and gas resources more and more valued by countries all over the world. my country's unconventiona...

Examples

Embodiment 1

[0035] Take 45 parts of water and add it to a 250mL beaker, place it on a magnetic stirrer, add 20 parts of aluminum sulfate and stir for 10 minutes, and finally add 3 parts of isopropanolamine and stir for 15 minutes to prepare a new type of crosslinking agent .

Embodiment 2

[0037] Add 52 parts of water into a 250mL beaker and place it on a magnetic stirrer, then add 25 parts of aluminum chloride and stir for 10 minutes, and finally add 6 parts of ethanolamine and stir for 15 minutes to prepare the new crosslinking agent.

Embodiment 3

[0039] Add 60 parts of water into a 250mL beaker and place it on a magnetic stirrer, then add 27 parts of aluminum nitrate and stir for 10 minutes, and finally add 7 parts of triethylenetetramine and stir for 15 minutes to obtain a new type of crosslinking agent.