Pressure transient survey in producer during the pressure rise period caused by shutting well down or reducing its production rate.
Shut-in survey after production period with a constant rate (see Fig. 1):
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| Fig 1. Horner test procedure |
Interpretation
Interpretation of BUS is based on:
- visual analysis of PTA diagnostic plot
- selecting diffusion model from PTA Type Library
- fitting selected diffusion model to pressure gauge data records