An Innovative Modeling Approach to Predict Waterflooding Performance in a Depleted Reservoir with Commingled Production

Abstract

Waterflooding is a common technique to improved oil recovery, called as secondary oil recovery method. Predict the waterflooding performance in depleted and dipping reservoir which has completed with commingled production method is challenging in this study.

We introduce a workflow as an innovative modeling approach to design and predict waterflooding performance, includes analytical and mechanistic modelling in in depleted and dipping complex reservoir geology. Rock properties modeling were constructed as topdown method in the mechanistic model.

The results were outstanding and achieved pressure data and oil recovery matching as a modeling validation. This modeling approach can explain the mechanism how reservoir was being produced and why oil recovery is low and conclude whether a room to improve oil recovery. It can be used to design and predictinjection performance.

This approach can be classified as an innovative method to have better reservoir management especially in a depleted reservoir with low oil recovery and limited surveillance data.