( also called unit-rate self-response )
Sandface pressure response drop to the constant unit-rate production :
p_u(t) = p_{\rm wf}(0) - p_{\rm wf}(t)|_{q = 1} >0, \quad p_{u}(0) = 0 |
Sandface pressure response drop in well "m" to the constant unit-rate production from the same well "m":
p_{u,mm}(t) = p_{{\rm wf}, mm}(0) -p_{{\rm wf}, mm}(t)|_{q_m = 1} >0, \quad p_{u,mk}(0) = 0 |
Fig. 1. A sample of typical DTR (pressure drop P in blue and log-derivative P' in red) presented on PTA type-library log-log plot |
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing / Pressure Testing / Unit-rate transient response (UTR)
[ Cross-well Transient Response (CTR) ]