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History Matching and Performance Prediction of Naturally Fractured Petroleum Reservoir Based on the Recovery Curve Method

Ghaedi, Mojtaba | 2015

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  1. Type of Document: Ph.D. Dissertation
  2. Language: Farsi
  3. Document No: 47409 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Massihi, Mohsen; Ghazanfari, Mohammad Hossein; Heinemann, Zoltan
  7. Abstract:
  8. The discrete fracture network and continuous fracture network are among the most widely used methods to model naturally fractured reservoirs. Each method faces particular limitations. The recently introduced recovery curve method (RCM) is believed to meet the limitations of the common methods. In the RCM the recovery curves are used to more realistically describe matrix-fracture interactions. It is necessary to present appropriate solutions to apply the RCM in the real fileds and also to evaluate it based on the historical production data. In this work at first, the basics of the RCM are presented then with a simple column model this method is validated. Then in a column model and a field model, the potential applicability of the RCM in the framework of history matching is presented. It is shown that the water and gas displacement recovery curves can be determined by matching the history of water-oil contact and gas-oil contact respectively. Thus, a method is suggested to determine the matrix-fracture mass exchanges by historical data. Furthermore, the applicability of the combined genetic algorithm and Neighborhood-Bayes algorithm method for optimization and uncertainty quantification purposes is confirmed. Moreover, in a column model and a field model, a method is proposed to determine the in-situ wettability index based on the recovery curves obtained through the history matching. Obtained in-situ wettability indices are in agreement with the expected wettability states of the rocks. Finally a framework based on the RCM is introduced to evaluate the matrix block size distributions in a simulation cell. The introduced method is validated with three synthesis cases and then it is applied in a field
  9. Keywords:
  10. History Matching ; Shape Factor ; Matrix-Fracture Interaction ; Fractured Reservoirs ; Dual Porosity Model ; Wettability ; Recovery Curve Method

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