Collective term for Cased-Hole Logging operations performed in with a purpose to assess wellbore and reservoir flow and pressure profile:
See Also
Petroleum Industry / Upstream / Data Acquisition / Well & Reservoir Surveillance / Well logging / Cased-Hole Logging
[ PLT – Donwnhole Tools ] [ PLT – Logging Procedure ] [ PLT – Interpretation ] [ PLT – Samples ]
[ Well & Log Analysis ] [ Injection Logging (ILT) ]
Сased-hole logging technique assessing the borehole flow profile (PLT-BFP) and reservoir flow profile (PLT-RFP) in producing wells.
The survey is performed with a multi-sensor donwhole PLT Logging Tool and interpreted with PLT-BFP Model or PLT-RFP Model.
PLT is essential part of the production and recovery monitoring and helps understand fluid communication at wellbore ↔ reservoir contact.
For PLT in injection well see ILT, although it is often called PLT anyway.
Objectives
Picking up the fluid inflow intervals and phase characterization |
| Estimating flowrate of each phase component across each inflow interval |
| Check up for cross-flows in shut-in conditions between formation units with different formation pressure |
Picking up the zones of the first barrier (tubing and/or casing) integrity failure |
| Both perforations are producing oil and water with upper interval producing more than lower. The lower inflow zone is mostly producing water. |
Fig.1 . PLT in oil producer with oil and water production. |
