A sandface pressure response to unit-rate production in the same or remote well.
It further splits into:
| DTR | pressure response to unit-rate production in the same well |
| CTR | pressure response to unit-rate production in the remote well |
|
Fig. 1. A sample of typical DTR (dash line) and CTR (circles) presented on PTA type-library log-log plot. (pressure drop P in blue and log-derivative P' in red) |
The source of UTRs are:
| Numerical pressure simulations | Numerical flow simulations | Deconvolution of long-term PDG data records | Pressure Interference Testing |
The most common use of UTRs is to assemble a Pressure Interference Matrix and perform:
| Qualitative analyses of the reservoir properties | Qualitative analysis with Unit-rate Transient Response Model (UTRM) |
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Field Study & Modelling / Reservoir Flow Simulation
[ Pressure Testing ] [ Pressure Interference Matrix ] [ Pressure Test Model ]