Reservoir Characterisation

Informed Analysis, Deep Understanding


We support you to make informed decisions about your oil and gas reservoirs by conducting multidisciplinary reservoir evaluation, characterisation and modelling studies. One of our special areas of expertise is core, cuttings and log based reservoir characterisation, along with the development of seismically consistent, high resolution 3D static and dynamic reservoir models.

Petrophysics and Borehole Geophysics

  • Formation evaluation (MWD, open and cased hole)
  • Vintage log analysis
  • Production log interpretation
  • BHI log processing and interpretation
  • Well ties and borehole seismic data integration

Reservoir Characterisation

At the heart of our successful static and dynamic modelling process is understanding the true nature of target reservoir sections. To achieve this we focus on chronostratigraphically tied well correlations, pragmatic core, petrology, wireline, seismic attribute and BHI interpretations. Of course we integrate and use the rocks as our primary control.  We go further that all other companies however, we derive porosity and permeability from the visual inspection of often ignored drill cuttings. Using drill cutting in this way liberates us in that we can use all rock data that is available.

  • Porosity and permeability estimation from drill cuttings (rock typing)
  • Core logging (clastics, carbonates, evaporites, volcano-clastics, (fractured) basement)
  • Biostratigraphy, petrology and reservoir quality interpretation
  • Sedimentological analysis and interpretation
  • Facies analysis and mapping
  • Fracture assessment
  • Sequence stratigraphic interpretation

Reservoir Modelling

Outstanding models result from outstanding reservoir characterisation prior to any modelling.  At HOT we treat models as what they are: “Models” that ideally mimic the true reservoir performance behaviour.  Reservoir modelling is data integration alive, with permanent team interaction across disciplines. We build sound models that result in reliable forecasts.

  • QC and optimisation of static models
  • Structural model building
  • Facies modelling
  • Saturation-height modelling
  • Stochastic property modelling
  • Multiple scenarios deterministic modelling
  • Volume estimation and uncertainty evaluation
  • Fracture network modelling
  • Simulation grid design / upscaling

Reservoir (Fluid Flow) Simulation

It’s all about predictability. We tailor our models to serve the needs as no one model can answer all questions.
Only fit-for-purpose models provide reliable predictability. At HOT this refers to both model design and simulation workflow. Key reservoir performance drivers are identified prior to model building. Based on sound reservoir understanding our bespoke models minimise risk and optimise returns on investment.

  • Conversion between simulators
  • Model migration from EclipseTM to PetrelRETM
  • QC and optimisation of simulation models
  • Screening of geomodels / scoping runs
  • Grid optimisation (single-well, cross-section, sector, full-field)
  • Single and dual permeability modelling
  • Black-oil simulation (gas storage, gas, oil, condensate, heavy oil)
  • Compositional simulation (gas storage, condensate, volatile oil, miscible flooding)
  • Streamline simulation
  • Assisted history matching
  • Performance evaluation, forecasting and optimisation
  • Uncertainty and risk analysis

Fluid Characterisation

Selecting the representative fluid sample is the most important step when creating a fluid model.  At HOT detailed quality control of all steps from sampling up to lab experiments is considered key prior to characterize and creation of necessary PVT descriptions used in any subsequent investigation.

  • Screening and QC of sampling and lab work
  • Equation of state modelling
  • Generation of representative and optimised fluid descriptions (dry gas, black oil, compositional)

Routine and Special Core Analysis

At HOT petrological analysis to define reservoir quality enhances  strictly mathematical reservoir rock type classification. Relating core plug data to lithology, depositional environment, diagenesis and fracturing leads to a geologically sound description.

  • Screening and QC of sampling, core handling and lab experiments
  • Derivation of Archie parameters, wettability, capillary pressure and relative permeabilities
  • Hysteresis modelling

Advanced Saturation-Height Modelling

At HOT, we offer Advanced Saturation-Height Modelling services that ensure perfectly consistent water saturation distributions in static and dynamic models when applied in modelling workflows. The services we provide also ensure:

  • A consistent conversion of capillary pressure data from lab to reservoir conditions, allowing also an assessment of wettability
  • A free water level iteration possibility
  • The QC of logging tools consistency
  • The QC of potential flushed zones
  • The QC and refinement of reservoir subdivision/rock typing (zones, facies, etc.)
  • A saturation-height model fully consistent with the underlying log water saturation

Questions? Our expertise is your solution:

© All rights reserved
HOT Engineering GmbH   Tel: +43 3842 43 0 53-0   Fax +43 3842 43 0 53-1