Etherification modified gas-suspended proppant, and preparation method and application thereof

CN122255984APending Publication Date: 2026-06-23CHINA PETROCHEMICAL KUNSHAN CO LTD +2

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: CHINA PETROCHEMICAL KUNSHAN CO LTD
Filing Date: 2024-12-23
Publication Date: 2026-06-23

AI Technical Summary

Technical Problem

The existing air-suspension proppant has insufficient suspension performance, which affects its migration distance and uniformity in fractures, resulting in low oil and gas extraction efficiency.

Method used

An etherification modification method was used to synthesize a long alkyl chain hydrophobic coating on the surface of quartz sand, and surfactants such as sodium nonane sulfonate were used to bind to functional sites to optimize the structure of the air suspension proppant, thereby improving its suspension capacity and emission assistance effect.

Benefits of technology

Etherified modified gas suspension proppant increases the suspension ratio by more than 15% and the drainage effect by more than 10%, enhancing its supporting role in fractures and improving the extraction efficiency and recovery rate of oil and gas resources.

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Abstract

The present application relates to a kind of etherification modified gas suspension proppant and its preparation method and application, belong to the technical field of proppant.Solve the shortcomings of the suspension performance of the gas suspension proppant in the prior art.The preparation method of the present application, first, quartz sand is placed in acid liquor, after pickling, washing, obtain pickled quartz sand;Then using the aqueous solution of diethylamine and bromine long-chain alkane synthesis long alkyl dimethyl amine A, long alkyl dimethyl amine A is reacted with epichlorohydrin, and epoxy propyl long alkyl dimethyl ammonium chloride B is obtained, and epoxy propyl long alkyl dimethyl ammonium chloride B is covered to the surface of pickled quartz sand;Finally, after surfactant treatment, etherification modified gas suspension proppant is obtained.The etherification modified gas suspension proppant has excellent suspension capacity and high efficiency drainage capacity, enhances its supporting effect in formation, which will effectively improve the exploitation efficiency and recovery of oil and gas resources.

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