Modelling of reservoir wettability in lab and simulation experiments

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Introduction

After primary and secondary recovery, an operator of an oil field will consider methods for tertiary recovery. Most Enhanced Oil Recovery (EOR) applications require detailed knowledge of the reservoir properties to model these characteristics in screening experiments in the lab or with simulation prior to field application. One parameter of interest is the wettability of the reservoir rock. This work shall collect and sort the published data on wettability of reservoir rocks after giving an all-embracing introduction into the topic. Then the student is supposed to give a detailed insight into procedures and methods to model different stages of wettability in the lab. Furthermore, the student shall research how wettability can be modeled with current numerical simulation software.

Scope

Based on the above introduction, the proposed thesis should include the following:

  1. Definition of wettability and its measurement.
  2. Discuss what parameters determine the wettability of a reservoir rock and if and how these parameters can change in the geological history of the reservoir as well as during production.
  3. Find and sort published wettability data of oil and gas fields.
  4. Present methods to investigate the influence of wettability in core flooding experiments if no reservoir rock is available.
  5. See what simulators are used in publications to consider the influence of wettability in numerical simulation and how it is implemented.

References

  • W. Abdallah, J. S. Buckley, A. Carnegie, J. Edwards, B. Herold, E. Fordham, A. Graue, T. Habashy, N. Seleznev, C. Signer, et al., Oilfield Review 2007, 19, 44–61.