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POLYMER HAVING DISPERSING FUNCTION, OIL WELL CEMENT DISPERSANT, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A polymer having a dispersing function, a preparation method therefor, and a use thereof as a cement dispersant are provided. The polymer has a structural unit a, a structural unit b, a structural unit c and a structural unit d. The structural unit a is provided by an unsaturated polyether and/or polyester, the structural unit b is provided by an unsaturated carboxylic acid or an anhydride or salt thereof, the structural unit c is provided by a silane and/or siloxane containing a polymerizable group, and the structural unit d is provided by an unsaturated sulfonic acid or a salt thereof. The molar ratio of the structural unit a to the structural unit d is 1:(5-15) and the polymer has a weight average molecular weight of 20,000 to 120,000. The polymer can be used as an oil well cement dispersant.
POLYMER HAVING DISPERSING FUNCTION, OIL WELL CEMENT DISPERSANT, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A polymer having a dispersing function, a preparation method therefor, and a use thereof as a cement dispersant are provided. The polymer has a structural unit a, a structural unit b, a structural unit c and a structural unit d. The structural unit a is provided by an unsaturated polyether and/or polyester, the structural unit b is provided by an unsaturated carboxylic acid or an anhydride or salt thereof, the structural unit c is provided by a silane and/or siloxane containing a polymerizable group, and the structural unit d is provided by an unsaturated sulfonic acid or a salt thereof. The molar ratio of the structural unit a to the structural unit d is 1:(5-15) and the polymer has a weight average molecular weight of 20,000 to 120,000. The polymer can be used as an oil well cement dispersant.
POLYMER HAVING DISPERSING FUNCTION, OIL WELL CEMENT DISPERSANT, AND PREPARATION METHOD THEREFOR AND USE THEREOF
ZHOU SHIMING (author) / MIAO XIA (author) / YANG GUANGGUO (author) / WEI HAOGUANG (author) / LU PEIQING (author) / XIAO JINGNAN (author) / YANG HONGQI (author) / LIU RENGGUANG (author) / CHEN LEI (author) / WANG LISHUANG (author)
2023-09-14
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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| European Patent Office | 2022