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CO2 miscible injection method combined with surfactants and silica nanoparticles was studied to investigate the effect of these additives on CO2 mass transfer parameters to the light oil, including diffusion coefficient, mass transfer coefficient and solubility. Silica nanoparticles with controlled size distribution were synthesized in isooctane/1-hexanol/CTAB/ammonium hydroxide, a highly-stable reverse...
The major objective of this paper was to evaluate the viability of CO2 huff ‘n’ puff processes as primary means to enhance oil recovery in low-pressure tight reservoirs and thereby optimize the corresponding key operating parameters of the process. In this study, CO2 huff ‘n’ puff corefloods were conducted by using a 973mm-long composite core with an average porosity of 9.6% and an average permeability...
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