Dykstra and Parsons correlated vertical sweep efficiency with the following parameters:

 

 

The authors presented their correlation in a graphical form for water–oil ratios of 0.1, 0.2, 0.5, 1, 2, 5, 10, 25, 50, and 100 bbl/bbl.

 

Using a regression analysis model, de Souza and Brigham grouped the vertical sweep efficiency curves for 0 ≤ M ≤ 10 and 0.3 ≤ V

≤ 0.8 into one curve and developed a regression equation that has been implemented into this routine.

 

Simply enter the required input data, then press the Calculate button, as shown below.

 

References:

Dykstra, H., Parsons, R., "The Prediction of Oil Recovery by Water Flood", Secondary Recovery of Oil in the United States, 2nd ed. American Petroleum Institute, 1950

 

de Souza, A., Brigham, W., "A Study on Dykstra–Parsons Curves", Stanford University Petroleum Research Institute, 1981

 

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