3D Reservoir Modeling Services

Eriksfiord provides 3D Reservoir Modeling by integrating interpreted wireline logs, image logs, seismic data, core data and production data. The creation of structural, stratigraphic, petrophysical and sedimentological properties within these 3D static reservoir models are used for reservoir characterization, reserve calculation and reservoir simulation.

Our main 3D Reservoir Modeling services consist of:
  • Fault and structural modeling
  • Stratigraphic correlation of log data
  • Stochastic and deterministic property modeling with incorporation of seismic attributes in the Facies modeling process
  • Volumetric calculations for hydrocarbon reserves and resources
  • Uncertainty analysis
  • Model preparation for reservoir simulation
  • Fracture modeling
  • Geomechanical modeling

3D Reservoir Modeling is aimed at optimizing:
  • Reservoir management and economic decisions
  • Development and operating strategy
  • Reserve and range estimates
  • Recovery mechanism
  • Well planning
  • Sensitivities of static and dynamic parameters (e.g. , NTG, Aquifer, etc.)
  • Uncertainty and risk management

During exploration phase, P10 P50 P90 evaluation and development strategies play a central role. The uncertainties which are evaluated in Monte Carlo simulations are the depth conversion, contact uncertainties and the range of reservoir properties (PHI, PERM, NTG, SW). Results are documented in Tornado diagrams, highlighting the risks and uncertainties.

Reservoir modeling is operated in our offices by using Petrel (Schlumberger), or in client offices using the local software (e.g.: Petrel, Gocad, RMS). Both are performed as closely involved interactive consultation with the client to clearly define the objectives and expectations and are also meant to react fast on changing project priorities and customer requests.

Geomechanical Modeling

Borehole images, sonic logs, AVO-based Vp/Vs imaging and laboratory tests of rock samples are the input data supply for geomechanical modeling. 3D models of rock strength, pore pressure and models to estimate the stress tensor are built.

Some essential applications of the geomechanical models include:
  • Well design, to avoid fracturing (mudloss) and collapse (stuck pipe)
  • Optimisation of completion design and evaluation of sanding potential
  • Fracture performance (aperture) during production and injection
  • Reservoir compaction in response to pressure depletion
  • Pressure capacity (possible hydrocarbon column) of sealing strata or faults; determination of migration pathways
  • Risk of movement of known faults in response to pressure depletion and repressurisation
For geomechanical modeling of complex geometries and coupled effects, we use finite element methods (Ansys and Abaqus). For faster simulation of simpler geometries we also use an inhouse finite difference algorithm.