Carbon dioxide has been used commercially to recover oil from reservoirs for more than 40 years. Currently, CO2 flooding is the second most applied enhanced oil recovery (EOR) process in the world behind steam flooding. Water alternating gas (WAG) injection has been a popular method to control mobility and improve volumetric sweep efficiency for CO2 flooding. Average EOR is about 9.7% with a ra...

The displacement of more viscous fluids by less in porous media provides not only an industrial application for enhanced oil recovery (EOR) from reservoirs, but also a fundamental study the phase transition phenomena fluids, combining fluid mechanics and thermodynamics. Recent studies have shown that coupling thermodynamic hydrodynamic instabilities results formation self-driven active signific...

the analytical theory of one dimensional, dispersion free miscible displacement of oil by injection gas with nc component has shown that: the mmp is the lowest pressure at which any one of the initial oil, injection gas or crossover key tie lines becomes critical, which means that its length approaches to zero. in this paper, we propose a method for a solving multi component system based on ana...

In this study, oil production and retention were observed compared in 72 reservoir simulation cases, after which an economic analysis for various CO2 prices was performed. Reservoir cases comprise different combinations of water alternating gas (WAG) ratios, permeabilities, well distances. These models set at three depths; thus pressure temperature conditions, to see the impact miscibility on s...

Future high redshift 21-cm experiments will suffer from a high degree of contamination, due both to astrophysical foregrounds and to non-astrophysical and instrumental effects. In order to reliably extract the cosmological signal from the observed data, it is essential to understand very well all data components and their influence on the extracted signal. Here we present simulated astrophysica...

Introduction. Ruptured abdominal aortic aneurysm (rAAA) causes a significant inflammatory response. The study aims to investigate this response following endovascular and open repair of ruptured AAA. Patients and Methods. Consecutive rAAA patients had either endovascular aneurysm repair (EVAR) or open repair (OR). Blood samples were taken for cytokines, lipid hydroperoxides (LOOH), antioxidants...

Although lots of experiments have been done in enhanced oil recovery, the number of experiments which consider the effects of local and global heterogeneity on efficiency of enhanced oil recovery based on the polymer-surfactant flooding is low and rarely done. In this research, we have done numerous experiments of water flooding and polymer-surfactant flooding on a five spot glass micromodel in...

Due to the non-linear ionizing and heating processes, 21-cm signals from epoch of reionization (EoR) are expected have strong non-Gaussian fluctuations. In this paper, we use semi-numerical simulations study statistics i.e. skew spectrum smoothed skewness EoR. We find similar evolution features with bispectrum. All them sensitive EoR models, while not too much cosmic volume applied. With SKA1-l...