Pressure Transient Test Analysis for Deep Fractured Gas Reservoirs in Tarim Basin

Dong Chen, Xin Wang (), Fenglai Yang, Baohua Chang, Lei Liu, Junlei Wang and Wenzhuo Zhou
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Dong Chen: PetroChina Tarim Oilfield Company, Korla 841000, China
Xin Wang: Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
Fenglai Yang: PetroChina Tarim Oilfield Company, Korla 841000, China
Baohua Chang: National Elite Institute of Engineering, CNPC, Beijing 100096, China
Lei Liu: PetroChina Tarim Oilfield Company, Korla 841000, China
Junlei Wang: Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
Wenzhuo Zhou: School of Energy Resources, China University of Geosciences, Beijing 100083, China

Energies, 2024, vol. 17, issue 7, 1-16

Abstract: Fractures are common features in deep gas reservoirs with strong heterogeneity, which are generally evaluated by well-testing analysis. Based on the characteristics of a variety of spatial scales from microscopic fractures to macroscopic faults in the Kuche area, this paper investigated the pressure behavior of naturally fractured gas reservoirs by using four typical patterns, including the Warren–Root model, radial composite model, dual-flow-state model, and local heterogeneity model. As a result, typical well-testing curves and parameter sensitivity analysis were demonstrated in detail. Furthermore, the pressure transient behavior of multi-scaled fractured reservoirs was identified by use of a state-of-the-art workflow. The analysis shows that the four patterns and their identification processes were feasible for the inversion of reservoir parameters in fractured gas reservoirs. Combined with dynamic data, the proposed method could further guide the optimization of development schemes and is of great significance for the development of fractured gas reservoirs.

Keywords: Tarim Basin; naturally fractured reservoir; well-testing analysis; multi-scaled (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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