Unconventional/complex reservoirs

Gas-Diffusion Coefficient in Organic Matter Affects Estimation of Shale-Gas Reservoirs

The paper provides insights on diffusion in organic matter to correct a primary source of underestimation of gas production in shale-gas models.

Layers of shale line coastline.
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US shale reservoirs are tight and inherently heterogeneous, with an abundant presence of kerogenic material. Modeling fluid flow in shale reservoirs is complex because of flow physics such as pressure flow and diffusion. Many field-performance forecasts underestimate production from these reservoirs constantly because most current models ignore important governing physics. This study provides new insights on diffusion in organic matter to correct a main source of underestimation of gas production in shale-gas models.

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