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SKUA Structure and Stratigraphy

Modeling without distortion.

In exploration and production, state-of-the-art 3D modeling and construction of 3D grids is similar among competing applications: The conventional technique for constructing a model is pillar-based. Unfortunately, in environments containing Y faults or oblique faults, pillar-based construction requires modifications of the fault geometry and/or removal from the model. The technique introduces deformations of the grid cell geometry, which adversely affect the distribution of petrophysical properties and flow simulation results.

SKUA™ (Subsurface Knowledge Unified Approach) is a 3D methodology that unifies all subsurface discrete models. SKUA embeds a native, fully-3D description of the faulted volumes. This is achieved by using the UVT Transform , a technology based on the observation that horizons represent geochronologic surfaces. Working with a paleo-geographically correct mesh, geoscientists can model geobodies, reservoir properties and other attributes in their true depositional state without distortion to the current geometry or paleo-geometry.

Other structure and stratigraphy benefits

  • Fast and accurate “true” 3D modeling (without pillars)
  • One “true” 3D model with many direct uses (simulation, basin modeling, inversion, etc.)
  • One model for structure, stratigraphy and reservoir grid
  • Geologically constrained

As a direct output from the SKUA UVT model, it is possible to compute:

  • Displacement maps everywhere on the fault surface
  • Juxtaposition maps
  • Structural maps
  • Shale-gouge ratio and weighted-shale-gouge ratio on faults
  • Deformation of the layers, strain and stress
  • Probability of fracturing and directions of fractures
  • Spill point probability

System Requirements

Interoperability Options

All Epos™-based applications enable interoperability with third-party data stores, including:

  • RESQML 2.0.1
  • OpenWorks® R5000.10
  • Petrel* 2019 & 2018
  • Recall™ 5.4.2

(*is a mark of Schlumberger )