Modified silicon dioxide nano-particles and preparation method thereof, and drilling fluid suitable for shale gas wells

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United States of America Patent

PATENT NO 9790415
SERIAL NO

15489210

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Abstract

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The present invention relates to the petroleum drilling fluid field, and discloses a modified silicon dioxide nano-particle comprising a modifying polymer chain composed of structural units provided by one or more of monomers represented by the following formula (1) and one or more of monomers represented by the following formula (2). The present invention provides a method for preparing modified silicon dioxide nano-particles and a drilling fluid suitable for shale gas wells containing the modified silicon dioxide nano-particles as a plugging agent. When the modified silicon dioxide nano-particles provided in the present invention are used as a plugging agent in a drilling fluid, they will not agglomerate into large-size particles, and can achieve a good plugging effect.

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Patent Owner(s)

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CHINA UNIVERSITY OF PETROLEUM (BEIJING)102249 BEIJING CITY CHANGPING DISTRICT ROAD NO 18 BEIJING CITY BEIJING CITY 102249

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
An, Yuxiu Beijing, CN 5 19
Ge, Qingying Beijing, CN 3 5
He, Yinbo Beijing, CN 28 32
Jiang, Guancheng Beijing, CN 47 76
Liu, Fan Beijing, CN 63 244
Ma, Guangchang Beijing, CN 11 22
Peng, Chunyao Beijing, CN 13 8
Qin, Yong Beijing, CN 85 1289
Shi, He Beijing, CN 6 14
Shi, Yawei Beijing, CN 6 13
Sun, Haifang Beijing, CN 10 35
Yan, Jienian Beijing, CN 3 10
Yang, Lili Beijing, CN 79 546

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