China University of Petroleum

Sichuan University

Qingdao University of Science and Technology

Livzon Pharmaceutical Group Inc.

Qin Yang

Caili Dai

Guang Zhao

Jin Zhu

Bin Yan

Xuemei Hou

Jingen Deng

Qingfeng Liu

Jia Chen

Yongle Chen

Haoran Cheng

Hao Ren

Qiwei Wang

Yong Zheng

Lianming Zhao

Qiuya Huang

Wanlei Geng

The present disclosure relates to the technical field of oilfield chemistry, and discloses a COchemical reaction viscosity-increasing type polymer surfactant for gas channeling control during COflooding in offshore heavy oil reservoirs, a preparation method therefor and use thereof, the COreactive viscosity-increasing polymer surfactant includes structural units represented by formula (1), formula (2) and a formula (3) respectively; R, R, R, Rand Rin formula (1) are respectively one or more of H, F, C-Calkyl alcohol, and at least one group is F; R, Rand Rin formula (2) are respectively one or more of H, C-Calkyl; R in formula (3) is one or more of C-Calkyl; the COreactive viscosity-increasing polymer surfactant has a high COgas channeling plugging strength, excellent chemical stability, and desirable heavy oil viscosity reduction performance;

COchemical reaction viscosity-increasing type polymer surfactant for gas channeling control during COflooding in offshore heavy oil reservoirs, preparation method therefor and use thereof

Disclosed are an optically pure compound having formula I, its pharmaceutically acceptable salt and its pharmaceutically acceptable solvate, and a use thereof in manufacturing medicaments and pharmaceutical compositions. A process for preparing the compound defined therein is also provided. 

Substituted sulfoxide compounds, methods for preparing the same and use thereof

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Chengdu, China

Qin Yang