Oil and Gas

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Used by industry leaders across the world, geo-mechanical analysis of Oil & Gas reservoirs or wellbores is one of the specialties of DIANA – it incorporates an extensive range library of material models, element types and analysis functions specifically designed in conjunction with the industry.

Helping you to reach further

Drilling with confidence

As production of Oil & Gas shifts from easily accessible reservoirs, to those which are located at greater depths, or in formations with complex geology – larger risks and hazards become inevitable.

Many leading companies in the industry come to DIANA to provide specialized analysis of their difficult to reach oil and gas reservoirs, and design of wellbores to reach them.

Must have features for Oil & Gas engineers

Analysis and design for reservoir stability

DIANA will help your organization to quantify rock-compaction, estimate stress changes and fault slipping in reservoirs, and deal with overburden and surface subsidence encountered in the production of oil and/or gas.

An additional benefit is that DIANA can then also be used for the design of wellbores to estimate rock failure, casing deformation and cementing integrity during well completion, or deal with operation considerations such as pressure, temperature shocks, or fault sliding.

The program is designed so that multiple finite element analyses can be carried out in one analysis command sequence, resulting in a much shorter set up and analysis calculation time.

Dedicated features for oil & gas reservoir and wellbore analysis

Geomechanical analysis of reservoirs

  • Plane strain and 3D meshing procedures for elements with linear and higher order displacement interpolation
  • Plane strain and 3D interface elements for modelling sliding faults with frictional properties
  • Unstructured and structured mesh generation for 2D models.
  • Automatic 3D meshing, inclusive interface element-definition for faults, from geological data represented by triangulate surfaces of horizons and faults
  • Definition of materials and pore-pressure loadings as distributed properties
  • Mohr-Coulomb and Drucker-Prager plasticity with and without plastic hardening for shear failure of rock
  • Cam-clay and Modified Mohr-Coulomb model for combined shear and compression failure of soft rocks
  • Creep
  • Hoek-Brown and Jointed rock
  • Orthotropic elastic and elasto-plastic
  • Total strain and multi-directional crack
  • Coulomb friction in interface elements inclusive fault-opening
  • Stress initialization with Ko procedures, inclusive calibration of plastic status of materials to initial stress condition
    Automatic and manual load and time stepping
  • Heat-stress analysis
  • Staggered and fully coupled flow-stress analysis
  • Drained and undrained analysis
  • Effective parallel direct and iterative equation solvers

Geomechanical analysis of wellbores & borehole stability

  • 2D and 3D meshing procedures
  • Wide range of element types, inclusive generalised plane-strain elements
  • Steel plasticity
  • Rock material models such as described above for analysis on reservoir scale
  • Concrete cracking and shrinkage
  • Nonlinear interface models for bonding / debonding of casing and cement
  • Visco-elasticity
  • Nonlinear stress analysis predicting integrity and failure of wellbore
  • Coupled and staggered heat-stress analysis
  • Open hole analysis
  • Transient analysis of creep and shrinkage effects

Licensing packages

Choose your subscription

We provide a wide range of flexible licensing modules and subscription plans for advanced calculations. Our Sales Team are always more than happy to discuss your requirements and can make individualized proposals based on your specific needs. 

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