Results 11 to 20 of about 129,267 (266)

Linear efficient antialiased displacement and reflectance mapping [PDF]

ACM Transactions on Graphics, 2013
We present Linear Efficient Antialiased Displacement and Reflectance (LEADR) mapping, a reflectance filtering technique for displacement mapped surfaces. Similarly to LEAN mapping, it employs two mipmapped texture maps, which store the first two moments of the displacement gradients. During rendering, the projection of this data over a pixel is used to
Dupuy, Jonathan, Heitz, Eric, Iehl, Jean-Claude, Poulin, Pierre, Neyret, Fabrice, Ostromoukhov, Victor   +5 more
openaire   +3 more sources

Experimental and Numerical Investigation on Oil Displacement Mechanism of Weak Gel in Waterflood Reservoirs

Gels, 2022
The production performance of waterflood reservoirs with years of production is severely challenged by high water cuts and extensive water channels. Among IOR/EOR methods, weak gel injection is particularly effective in improving the water displacement ...
Hongjie Cheng, Xianbao Zheng, Yongbin Wu, Jipeng Zhang, Xin Zhao, Chenglong Li   +5 more
doaj   +1 more source

Three-Dimensional Interaction of Viscous Fingering and Gravitational Segregation in Porous Media

Fluids, 2019
Viscous fingering is fluid dynamics instability induced on the displacement front when a less viscous fluid (LVF) displaces a more viscous fluid (MVF), thereby reducing the displacement efficiency. The displacement of a denser fluid by a less dense fluid
Tetsuya Suekane, Tomotaka Koe, Pablo Marin Barbancho   +2 more
doaj   +1 more source

Improving Energy Efficiency and Response Time of an Offshore Winch Drive with Digital Displacement Motors [PDF]

Modeling, Identification and Control, 2023
Offshore winch drives require high energy efficiency and control precision, making digital displacement motors an attractive solution due to their high efficiency and potential controllability.
Thomas Farsakoglou, Henrik C. Pedersen, Morten K. Ebbesen, Torben Ole Andersen   +3 more
doaj   +1 more source

Effect of the Pore Size Distribution on the Displacement Efficiency of Multiphase Flow in Porous Media

Open Physics, 2016
Due to the complexity of porous media, it is difficult to use traditional experimental methods to study the quantitative impact of the pore size distribution on multiphase flow.
Yang Yongfei, Liu Pengfei, Zhang Wenjie, Liu Zhihui, Sun Hai, Zhang Lei, Zhao Jianlin, Song Wenhui, Liu Lei, An Senyou, Yao Jun   +10 more
doaj   +1 more source

Microfluidic Study of Enhanced Oil Recovery during Flooding with Polyacrylamide Polymer Solutions

Micromachines, 2023
A series of experiments have been carried out on the flooding of microfluidic chips simulating a homogeneous porous structure with various displacement fluids. Water and polyacrylamide polymer solutions were used as displacement fluids.
Maxim Pryazhnikov, Andrey Pryazhnikov, Angelica Skorobogatova, Andrey Minakov, Yulia Ivleva   +4 more
doaj   +1 more source

Cementing Displacement Analysis of Narrow Annulus in Casing-Damaged Wells Repaired with Pachting-Plugging Pipes

Shiyou jixie, 2023
In order to further improve the application performance of the patching-plugging repair technology and the displacement efficiency of narrow-annulus cementing, a calculation model was built for the annulus displacement interface length, which considers ...
Hou Xuewen, Feng Ding, Zhang Bin, Sun Qiaolei, Wang Gaolei   +4 more
doaj  

Study on Micropore Throat Fluid Seepage Characteristics and Oil Displacement Efficiency in Tight Reservoir

Geofluids, 2022
In order to overcome the problems including complicated pore throat structure, changeable seepage characteristics, and difficulty to find seepage law in the tight reservoir, this study simulated the water flooding development process of oilfield ...
Jin Han, Yuhang Wei, Xiaobing Chen
doaj   +1 more source

Residual oil start-up mechanism of polymer/surface dual flooding after polymer flooding in medium-high permeability reservoir [PDF]

E3S Web of Conferences, 2023
The remaining oil distribution and displacement mechanism of poly/surface dual flooding stage in medium and high permeability reservoir are not clear. In this paper, the reservoir conditions in Gangxi Area 3 of Dagang Oilfield were taken as the research ...
Zhang Nan, Zhao Yuwen, Wang Wei, Wang Xiaoyan, Yan Xi, Yuan Guangyu, Lin Zeyu, Liu Yuanxian, Zhang Jing   +8 more
doaj   +1 more source

Research progress and development trend of biochemical composite enhanced oil recovery technology

Youqi dizhi yu caishoulu
This paper systematically investigated the progress of laboratory research and field application of biochemical composite enhanced oil recovery technology in the past 10 years in China and abroad.
SHU Qinglin, HU Jing, WANG Weidong, LIN Junzhang, YU Tiantian, ZHANG Zhongping, YIN Fanghao, ZHENG Wangang   +7 more
doaj   +1 more source