Definition
PLT (Production logging Tool) is the cased-hole logging methodology on analyzing the borehole flow profile.
PLT is essential part of the modern field development and helps asset team understand the geometry and the quality of the wellbore ↔ reservoir contact.
Objectives
| Producer | Injector (water or gas) |
|---|---|
Picking up the fluid inflow intervals and phase characterization | Picking up the fluid injection intervals |
| Estimating flowrate of each phase component across each inflow interval | Estimating injection rate across each injection interval |
| Check up for cross-flows in shut-in conditions between formation units with different formation pressure | |
Picking up the zones of tubing and/or casing integrity failure | |
Deliverables
Oil Producer | Water Injector |
|
|
Fig.1 . PLT in oil producer with water. Both perforations are producing oil and water with upper interval producing more than lower. The lower inflow zone is mostly producing water. | Fig. 2. PLT in water injector. Injection is going to the upper and lower part of perforation with majority of water going to the upper part and the most of perforations are not taking water. |
Logging tools
See article PLT – Donwnhole Tools
Procedure
See article PLT – Logging Procedure
Interpretation
See article PLT – Interpretation
Samples
See article PLT – Samples