Dynamic evaluation method for full cycle of oil testing: A case study of Well Ma X in Mazhongblock, Junggar Basin
Keywords:
build-up test, conductivityAbstract
For purpose of rapidly evaluating the fracturing effect and predicting the post-frac productivity, a dynamic evaluation method for the full cycle of oil testing based on the data of plugging breaking and fracturing pressure drop after perforation was proposed for the first time. Considering the characteristics of short oil testing drainage time, rapid system change, oil-gas-water multiphase flow, and unsteady flow, through the analysis of production data, the transient production analysis of flowback after fracturing was realized, and the conductivity of induced fractures was accurately characterized. Combined with the comprehensive analysis of shut-in pressure data, a dynamic evaluation method for the full cycle of oil testing was finally developed by integrating interpretations of fracturing pump shutdown pressure drop, production data analysis, and build-up testing. This method was applied to Well Ma X in the Mazhong block of the Junggar Basin, providing reasonable explanations for reservoir fluid supply capacity, boundary range, fracture development, and matrix properties, effectively supporting reservoir reserve declaration and production capacity construction. © 2023 Well Testing. All rights reserved.
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