China University of Petroleum

Sichuan University

Qingdao University of Science and Technology

Lianming Zhao

Caili Dai

Guang Zhao

Bin Yan

Qin Yang

Yong Zheng

Wanlei Geng

Jia Chen

Qingfeng Liu

Haoran Cheng

Hao Ren

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

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Qingdao, China

Lianming Zhao