An emerging methodology for hydraulic test performance and interpretation
a cargo de: JESUS CARRERA (Idaea-Csic)
Fecha: Jueves 15 de FEBRERO a las 12:15 h
Lugar: Departamento de Ingeniería Civil y Ambiental, Modulo D2-Aula CIHS, Planta Baja
Jesús Carrera, Lurdes Martínez-Landa, Laura del Val, Gustavo Ramos, Susana Gómez, Michela Trabucchi, Daniel Fernández
I review recent developments on the calculation of smooth log-derivatives (Ramos et al., 2017) and on Agarwal and Michela’s methods for recovery test analysis (Trabucchi et al, 2017). These developments suggest an alternative methodology for hydraulic test performance and interpretation that emphasizes recovery test data while carefully monitoring pumping rate, during the pumping phase, and long head monitoring (as opposed to the traditional test with constant rate pumping, which is needed for conceptual analysis, but proves very hard in practice). The proposed approach consists of the following steps:
- Detrend to remove head fluctuations caused by reasons other than the pumping test.
- Use Agarwal or Michela’s method, including corrections to account for variable pumping rate, to obtain a pumping test-like drawdown curve.
- Prepare diagnostic plots using the smooth log-derivative method.
- Proceed to traditional conceptual and numerical interpretation.
I apply the method to air-lift hydraulic tests at Heletz and to heating tests at Argentona, which illustrate its advantages and limitations.