Wellbore and reservoir pressure transition from one flow regime to another caused by the change in flow rate in the same well  (Fig. 1 – Fig. 4) or remote well  (Fig. 5 – Fig. 6).

Represent the basic data input for Pressure Transient Analysis


Fig. 1. Drawdown pressure transient as response to production rate increase

Fig. 2. Build-up pressure transient as response to production rate decrease


Fig. 3. Fall-off pressure transient as response to injection rate increase

Fig. 4. Injection pressure transient as response to injection rate decrease


Fig. 5. Drawdown pressure transient as response to production rate increase

Fig. 6. Build-up pressure transient as response to production rate decrease


See Also


Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing / Pressure Testing

Well & Reservoir Surveillance ] [ Pressure Diffusion ] [ Pressure Transient Analysis (PTA) ]