Insight into the Sealing Capacity of Mudrocks determined using a Digital Rock Physics Workflow

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dc.creatorBihani, Abhishek
dc.creatorDaigle, Hugh
dc.creatorSantos, Javier E
dc.creatorLandry, Christopher
dc.creatorProdanović, Maša
dc.creatorMilliken, Kitty
dc.date.accessioned2020-01-24T18:34:15Z
dc.date.available2020-01-24T18:34:15Z
dc.date.issued2019
dc.description.abstractPrimary objective: To better understand seal capacity in mudrocks and to determine the conditions under which a mudrock seal fails by allowing a non-wetting fluid to percolate. Hypothesis: Mudrock seals can fail below the fracture pressure if there exists a percolating pathway formed due to a continuous and sufficiently large pore-throat system. Procedure: We used SEM images of uncemented muds obtained at various depths (< 1.1 km burial) in the Kumano Basin offshore Japan for the study. Image mosaics were filtered and segmented using conventional and machine-learning techniques to identify the pore space, silt, and clay grains. We applied a 3D stochastic technique for pore space reconstruction from the SEM images and simulated capillary drainage in the resulting 3D volumes by the lattice Boltzmann method (LBM) using Stampede 2. Conclusion: Results showed that porosity and permeability decreased with depth, and capillary threshold pressure values increased. However, increasing silt content at a particular depth counteracted this behavior, due to better preservation of larger pores and throats.en_US
dc.description.departmentTexas Advanced Computing Center (TACC)en_US
dc.identifier.urihttps://hdl.handle.net/2152/79848
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/6874
dc.language.isoengen_US
dc.relation.ispartofTACCSTER 2019 Proceedingsen_US
dc.relation.ispartofseriesTACCSTER Proceedings 2019
dc.rights.restrictionOpenen_US
dc.subjectMudrock sealsen_US
dc.subjectsimulationen_US
dc.titleInsight into the Sealing Capacity of Mudrocks determined using a Digital Rock Physics Workflowen_US
dc.typePosteren_US

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