High-temperature and high-salt resistant hyperbranched lubricant for water-based drilling fluid, and preparation and application thereof

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United States of America

PATENT NO 12264279
SERIAL NO

18914368

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Abstract

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A high-temperature and high-salt resistant hyperbranched lubricant for a water-based drilling fluid, and preparation and application thereof are provided, belonging to the technical field of oilfield chemistry. The preparation method includes the steps of: mixing tetraethyl orthosilicate (TEOS), diethanolamine (DEA), and triethanolamine (TEA) for a transesterification and polycondensation reaction to obtain highly reactive hyperbranched polysiloxane; adding an acrylamide (AM) monomer, an anionic monomer, and a polar ester monomer into deionized water to obtain a monomer solution; adjusting the pH of the monomer solution to 5-9, and then adding highly reactive hyperbranched polysiloxane; introducing nitrogen to remove oxygen, adding an initiator, and thermally initiating a polymerization reaction; and after the reaction is completed, vacuum-drying and crushing an obtained product to obtain the high-temperature and high-salt resistant hyperbranched lubricant for a water-based drilling fluid.

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Patent Owner(s)

Patent OwnerAddress
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)66 CHANGJIANG WEST ROAD HUANGDAO DISTRICT QINGDAO CITY SHANDONG PROVINCE QINGDAO CITY SHANDONG PROVINCE 266555

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bai, Yingrui Dongying, CN 13 1
Huang, Xianbin Dongying, CN 17 21
Jin, Jiafeng Dongying, CN 11 1
Li, Jian Dongying, CN 1062 5232
Li, Meichun Dongying, CN 4 1
Liao, Bo Dongying, CN 9 4
Liu, Jingping Dongying, CN 49 111
Lv, Kaihe Dongying, CN 21 5
Sun, Jinsheng Dongying, CN 35 21
Wang, Jintang Dongying, CN 16 5

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