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A novel approach for reconstructing paleo-overpressure through basin simulations constrained by logging data a case study of Tight gas in Sulige Gas field, Ordos Basin
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A novel approach for reconstructing paleo-overpressure through basin simulations constrained by logging data a case study of Tight gas in Sulige Gas field, Ordos Basin
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A novel approach for reconstructing paleo-overpressure through basin simulations constrained by logging data a case study of Tight gas in Sulige Gas field, Ordos Basin
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Journal Article
A novel approach for reconstructing paleo-overpressure through basin simulations constrained by logging data a case study of Tight gas in Sulige Gas field, Ordos Basin
2025
Overview
The application of the basin simulation method in reconstructing the pressure evolution process is frequently constrained by the limited availability of measured data. In order to establish a valid relation between logging data and paleo-pressure, this paper proposes a novel approach to constrain the pressure reconstructed by basin simulation method. The Eaton index N corresponding to the paleo-pressure of each period is calculated using inversion method, based on measured paleo-pressure by fluid inclusion PVTx method and logging data, in accordance with the Eaton formula. Subsequently, this value is utilized to calculate the paleo-pressure of other wells. The paleo-pressure results are compared with those reconstructed by basin simulation method to validate the reliability of the findings. The findings demonstrate a strong concurrence between the paleo-pressure calculated using the mean value of index N for each period and the reconstructed paleo-pressure obtained through basin simulation methodology, with an average error margin of less than ± 5%. Therefore, utilizing log data to constrain the paleo-pressure reconstructed by basin simulation method is a viable approach due to its ease of accessibility, strong continuity, and broad applicability and potential for application. This is particularly advantageous in regions where acquiring paleo-pressure data poses challenges. The paleo-dynamic conditions exert a significant influence on the distribution of gas and water in tight sandstone gas reservoirs, providing valuable insights for identifying favorable areas.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
