Assess total sandface flowrate:
across the pulsing unit (from QZI log)
bottom-hole pressure
formation pressure
Calculate productivity index
J = \frac{q_t}{p_e - p_{wf}} |
q_t(t) = J \cdot (p_e - p_{wf}(t)) |
| 1 | Synchronize gauges |
| 2 | Stack data with wavelet filter |
| 3 | Calculate total sandface flowrate (see also below) |
| 4 | Create multi-well history plot |
| 5 | Analyze data and trim the irrelevant data |
| 6 | Decompose DTR/CTR |
| 7 | Assess apparent transmissibility / diffusivity |
| 8 | Perform numerical tests and compare with PCT DTR/CTR |
| Action | Mathematics | Comments | ||
|---|---|---|---|---|
| 1 | Assess total sandface flowrate:
bottom-hole pressure formation pressure | Assuming that recent PLT is available, both flowing and shut-in survey | ||
| 2 | Calculate productivity index |
| ||
| 3 | Calculate pulsing flowrate history across target formation during PCT |
| Assuming that formation pressure did not change much between PLT and PCT survey |
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well testing / PCT
[ Well & Reservoir Surveillance ]