Studies on micromorphology and permeability of hydrate-bearing porous media

Li, Gang; Weng, Yi-Fan; Li, Xiao-Sen; Xu, Zelin; Lv, Qiu-Nan; Xu, Chun‐Gang

doi:10.1016/j.fuel.2022.126647

Cited by 7 publications

(1 citation statement)

References 22 publications

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“…To demonstrate the evolution of the spatial distributions of three-phase saturations is one of the most important and challenging tasks of the experiment. However, the experimental process and data are always very difficult to be reproduced due to the heterogeneity of porous media, 8 different initial and boundary conditions, a variety of the design and distribution of the production wells, etc.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Methane Hydrate Dissociation Experiment in a Pilot-Scale Hydrate Simulator by a Full Implicit Simulator of Hydrate

et al. 2023

Ind. Eng. Chem. Res.

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Behaviors of gas and water production from a gas hydrate reservoir are based on fully coupled Thermal–Hydraulic–Chemical (THC) processes in porous media. Studies using experiments and mathematical models could be improved in hydrate-bearing sediments in the laboratory. The experiment of depressurization-induced methane hydrate dissociation via a single vertical well was carried out in quartz sands in a pilot-scale hydrate simulator (PHS). The multi-stage hydrate dissociation process, including the free liquid release, well shutdown, depressurization, and constant pressure, was achieved by complex manual operation of the production well in the experiment. A full implicit simulator of hydrate (FISH), a four-component, three-phase mathematical model, was developed and employed to reproduce the hydrate dissociation experiment. The kinetics of the hydrate reaction, heat/mass transfer in porous media, and mass conservation in the pressure vessel were validated by the experimental results. The key finding of this study is the acquisition of a group of unified parameters in a suitable mathematical model that could clearly elucidate the hydrate dissociation process in all stages. The mean absolute percentage error (MAPE) values of the gas and aqueous production are, respectively, as low as 2.338 and 9.630%. The strong confidence of the accuracy of the numerical simulator has been built up after the analysis of the experiment and the numerical simulation in this study, which could be used to evaluate gas recovery from marine hydrate reservoirs.

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Section: Introductionmentioning

confidence: 99%