Thus, the former volcanic cones were not blown into the air, as was first believed, but sank out of sight, the top of the volcano collapsing as a large volume of magma was removed from the underlying reservoir.
The well-testing analysis is performed in two consecutive steps including identification of underlying reservoir models and estimation of model-related parameters.
We perform global sensitivity analysis to quantitatively link uncertainty in the computed performance metrics to the uncertainties in the underlying reservoir parameters.
The first step in the well-testing interpretation is to identify the underlying reservoir model by which model-related parameters could then be appropriately estimated using the appropriate conventional techniques.
PNNs are used to predict the underlying reservoir model and the discrete value of the inter-porosity flow coefficient (if needed), while GRNNs are employed to estimate the values of dimensionless wellbore storage and storativity ratio (if required).
Since the well-testing diagnostic plots are arranged nearly ordered in time, the well-testing model recognition could be considered as a time-series classification problem where different types of underlying reservoir models constitute different classes.
Unlike the conventional analysis techniques in which the well-testing reservoir models are determined from the visual inspection of the pressure derivative plots, ANNs are trained with the representative examples to recognize the underlying reservoir model and estimate the model-related properties.
The anomalies of propanotrophic prmA gene with low contents of methanotrophic pmoA gene can reflect the existence of underlying oil reservoirs.
The waterflooding technique, in which oil is displaced by injecting water into the underlying petroleum reservoir, is investigated for the reservoir field where oil extraction has not been started.
Often this collapse is of a composite cone that rapidly emptied the underlying magma reservoir by voluminous eruptions of pumice and pumiceous ash.
We present the first three-dimensional simulation study of this field and document the temperature regime in the underlying geothermal reservoir as a function of the chamber depth and volume.
