14 Flashcards
(12 cards)
it can be used to better interpret and understand reservoir behavior and they provide a means of determining model sensitivity to changes in input data.
Predictions
Predictions enable people to estimate project life by predicting _____
recovery vs. time
prediction process
- model calibration
- base case predictions
It is usually necessary to ensure continuity in well rate when the modeler switches from rate control during the history match to pressure control during the prediction stage of a study.
Model Calibration
it is a forecast assuming existing
operating conditions apply.
Base Case Predictions
are often needed in both the history matching and prediction stages .
Sensitivity Analyses
example of sensitivity analyses
• conceptual modeling
• risk analysis
The _____ was studied by Saleri [1993] who compared actual field performance with predicted performance .
validity of model predictions
“Barring major geologic and/or reservoir data limitations, field wide cumulative production forecast accuracies would tend to range from _____”
10% to 40%
“Well performance forecasts are bound to be _____ than fieldwide predictions”
less successful
the majority of reservoir engineering decisions require choices based solely on _____
comparative analyses
in selecting optimum management strategies, _____ still offer the most effective tools
finite-difference models
