China University of Petroleum

University of Electronic Science and Technology of China

Sichuan University

Qingdao University of Science and Technology

Bin Yan

Caili Dai

Guang Zhao

Qin Yang

Haoran Cheng

Jia Chen

Run Ye

Hao Ren

Cheng Zhang

Yong Zheng

Lianming Zhao

Xuemei He

Wanlei Geng

Xiaojia Zhou

Qingfeng Liu

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

A method for calculating an optimal wheel position control angle of passenger boarding bridge automatic docking system includes collecting ranging information of a sensor to rotate the bridgehead direction via a distance measuring sensor on both sides of the bridgehead of the passenger boarding bridge, making the bridgehead parallel to the aircraft fuselage; collecting information of an aircraft door by a camera at the bridge head of the passenger boarding bridge to obtain a center position D of the aircraft door; in an ideal docking situation, the aircraft door should appear at the bridge head position as D&#x2033;; the position where D&#x2033; is projected vertically onto the aircraft fuselage is D', that is, the line segment DD&#x2032; is the horizontal distance deviation between the current passenger boarding bridge and the aircraft door, the line segment D&#x2032;D&#x2033; is the distance between the current boarding bridge and the aircraft fuselage.

Method for calculating optimal wheel position control angle of passenger boarding bridge automatic docking system

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Chengdu, China

Bin Yan