Schlumberger Technology Corporation

Simon Harris

Stephen Grenfell

Stephen Robert Freeman

Thomas Viard

Samita Santoshini

Fabrice Levassor

Sheleem Kashem

Methods for modeling and simulating fractured subterranean volumes include a method including obtaining geological data representing a subterranean volume, generating a structural model thereof in depositional space and in structural space. The method includes selecting a first cell and a second cell in the model, the first and second cells being juxtaposed in geological space and defining a fault face where the first and second cells are intersected by a fault, identifying a first point on the fault face, and calculating slip curves. Respective slip curves originate at the point and extend across the fault in geological space to a respective second point of a plurality of second points. The second points are co-located with the first point in the depositional space. The method includes calculating fault rock properties at the first point based on the slip curves and adjusting the model to include the fault rock properties.

Modeling and simulating faults in subterranean formations

A method can include accessing a depogrid generated via gridding of a structural model in a depositional space and transforming the gridded structural model to a geological space via an inverse mapping where the structural model represents structural features in a subterranean environment based at least in part on data acquired via at least one sensor; determining local u, v and w axes for a plurality of cells in the depogrid via volumetric centroids and vertices represented by coordinates in a depositional space coordinate system (u, v, w) and by coordinates in a physical coordinate system (x, y, z); defining directional geological grid properties based at least in part on the local u, v and w axes; and simulating physical phenomena of the subterranean environment via a simulator based at least in part on at least a portion of the directional geological grid properties.

Fluid simulator property representation

A method can include mapping a stairstepped grid to a surface where the stairstepped grid and the surface represent a discontinuity in a geologic environment; based at least in part on the mapping, adjusting properties associated with the stairstepped grid to compensate for spatial discrepancies between the stairstepped grid and the surface; and simulating flow in the geologic environment using the stairstepped grid and the adjusted properties.

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Simon Harris