Numerical simulations of depressurization‐induced gas production from hydrate reservoirs at site GMGS3‐W19 with different free gas saturations in the northern South China Sea
نویسندگان
چکیده
Class 1 hydrate reservoirs are regarded as the most promising targets for gas production. Previous investigations in northern South China Sea have proven that low-permeability reservoir at site GMGS3-W19 is a deposit. However, dynamic production behaviors of this type not yet fully understood. Here, we report recovery from containing underlying free layers with different initial saturations and investigate effects absolute permeability depressurization pressure on performance. The results show high saturation layer low bottom-hole advantageous enhancing anisotropic isotropic different. For long-term any saturation, higher horizontal (permeability anisotropy more than 10) remarkably beneficial to stimulate extraction decrease amount produced water replenished by inflows permeable overlying sediments. Moreover, rate highly consistent dissociation ratio, one main factors affecting performance, permeabilities. larger 5, can form secondary hydrates. increment formation negatively influences ratio recovery. Thus, it also significant weigh during progress. These findings contribute estimating efficiency optimizing process similar areas.
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ژورنال
عنوان ژورنال: Energy Science & Engineering
سال: 2021
ISSN: ['2050-0505']
DOI: https://doi.org/10.1002/ese3.903