Abstract
Nuclear magnetic resonance measurements in hydrate-bearing sandstone samples from the Shenhu area, South China Sea were used to study the effect of gas hydrates on the sandstone permeability. The hydrate-bearing samples contain pore-filling hydrates. The data show that the pore-filling hydrates greatly affect the formation permeability while depending on many factors that also bear on permeability; furthermore, with increasing hydrate saturation, the formation permeability decreases. We used the Masuda model and an exponent N = 7.9718 to formulate the empirical equation that describes the relation between relative permeability and hydrate saturation for the Shenhu area samples.
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This study was supported by the Key Program for International S &T Cooperation Projects of China (No.2010DFA21630) and the National Natural Science Foundation of China (No.41306050).
Li Chuan-Hui received his MS (2012) at China University of Petroleum (East China). Currently, he is a PhD student at China University of Geosciences (Beijing). His research interests are in the field of gas hydrates recognition.
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Li, CH., Zhao, Q., Xu, HJ. et al. Relation between relative permeability and hydrate saturation in Shenhu area, South China Sea. Appl. Geophys. 11, 207–214 (2014). https://doi.org/10.1007/s11770-014-0432-6
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DOI: https://doi.org/10.1007/s11770-014-0432-6