Pressure transient survey in producer during the pressure fall period caused by opening well for production or increasing its production rate (see Fig. 1):
Interpretation
Interpretation of DD is based on:
- visual analysis of PTA diagnostic plot (see Fig. 1)
- selecting pressure diffusion model from PTA Type Library
- fitting selected parameters of pressure diffusion model to pressure gauge data records (see Fig. 2)
Fig. 1. PTA Diagnostic Plot for vertical well in single-layer homogeneous reservoir without boundaries (IARF). Pressure is in blue and log-derivative is in red. | Fig. 2. PTA Diagnostic Plot for vertical well in single-layer homogeneous reservoir without boundaries (IARF). Pressure is in blue and log-derivative is in red. |