01725nab a2200193 4500 20260520001753.0 260224s2009 xxu X-ray computed-tomography observations of water flow through anisotropic methane hydrate-bearing sand jun. 2009 14/06/2010 ; 10/06/2010 12 p. ; 121-132 Transcripción del resumen del autor. We used X-ray computed tomography (CT) to image and quantify the effect of a heterogeneous sand grain-size distribution on the formation and dissociation of methane hydrate, as well as the effect on water flow through the heterogeneous hydrate-bearing sand. A 28 cm long sand column was packed with several segments having vertical and horizontal layers with sands of different grain-size distributions. During the hydrate formation, water redistribution occurred. Observations of water flow through the hydrate-bearing sands showed that water was imbibed more readily into the fine sand, and that higher hydrate saturation increased water imbibition in the coarse sand due to increased capillary strength. Hydrate dissociation induced by depressurization resulted in different flow patterns with the different grain sizes and hydrate saturations, but the relationships between dissociation rates and the grain sizes could not be identified using the CT images. The formation, presence, and dissociation of hydrate in the pore space dramatically impact water saturation and flow in the system. 3-4 Journal of Petroleum Science & Engineering 66 ARTICULO Seol, Yongkoo 42528 Kneafsey, Timothy J. 37731 170913 170913 0 0 0 0 238732 BAAB BAAB 2026-03-05 200045769 0 200045769 2026-03-05 15:13:17 2026-03-05 ARTICULO