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| Format: | Artículo científico |
| Sprache: | en |
| Veröffentlicht: |
Universidad Nacional de Colombia
2014
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=64331837014 |
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Inhaltsangabe:
- Interpretation of pressure tests in hydraulically fractured wells inbi-zonal gas reservoirs F. H. Escobar Y. L. Zhao L. H. Zhang Ingeniería mobility ratio fractured wells storativity ratio Pressure derivative Due to the recent increase in the fracturing of low permeability formations, mathematical wellbore data interpretation has be come important to generate mathematical models to study their pressure behavior and formulate interpretation methodologies for a m o re accurate characterization of tight hydrocarbon - bearing formations. This paper presents an analytical methodology of interpretation using the pseudopressure and pseudopressure derivative log - log plot for the characterization of hydraulically fractured (p artially or fully penetrating) vertical wells completed in bi - zonal gas reservoirs. The methodology provided uses characteristic points and lines found on the pseudopressure and pseudopressure derivative plot so that new analytical expressions and correlat ions are developed to estimate half - fracture length, fracture penetration ratio, mobility and storativity ratios, radial permeability, size of the inner zone, we ll drainage area, vertical permeability and skin factor. The new expressions were successfully verified and tested with synthetic examples. 2014 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64331837014 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.2 Vol.34