Fractured Reservoir Characterisation

Fractured reservoirs often display highly heterogeneous dynamic behaviour that is difficult to capture using standard reservoir modelling workflows. This course addresses all the relevant aspects of characterising and modelling fractured reservoirs to allow robust definitions of likely behaviour during production. Early analysis and integration of all available data, including dynamic data, is vital for the geologist and reservoir engineer to define the relationships between fracture and matrix parameters. Likely fracture distribution concepts (fold related, layer bound joints or fault related) can be defined and simple dynamic models built to test against well test or production data. In addition, first pass estimates of fracture porosity, fracture permeability and fracture sigma (fracture-matrix exchange factor) can be calibrated against available data. Fluid type is also important as gas reservoirs often only need simple modelling approaches compared with multiphase reservoirs. If the concepts and initial parameter estimates prove robust, more sophisticated techniques can be employed to produce more accurate models with greater control on parameter sensitivities.