Surfactants could react with adsorbates on carbonate rock surface to alter wettability from oil-wetness water-wetness, which is effective enhance oil recovery. Surfactant huff-puff treatment mostly applied for this purpose and the resulting surfactant performance outcome of complex interfacial processes. Currently, effect important parameters not completely reported contribution each parameter ...

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Delimitating trade areas is a major business concern. Today, mobile communication technologies make it possible to use social media data for this purpose. Few studies however, have focused on methods to extract suitable samples from social media data for trade area delimitation. In our case study, we divided Beijing into regular grid cells and extracted activity centers for each social media us...

Abstract Tight oil reservoirs have poor physical properties, and the problems including rapid rate decline low recovery degree are quite common after volume fracturing. To obtain a general understanding of tight reservoir production improvement by CO 2 huff ‘n’ puff, high-pressure properties typical samples measured. Combining parameters, characteristics developed puff numerically studied on ba...