Collective term for Cased-Hole Logging operations in producing wells with a purpose to assess Borehole Flow Profile (BFP) and/or Reservoir Flow Profiling (RFP):
Borehole Flow Profile (BFP) | Reservoir Flow Profiling (RFP) | ||
Borehole Production Profile | Borehole Injection Profile | Reservoir Production Profile | Reservoir Injection Profile |
PLT is essential part of the production and recovery monitoring and helps understand fluid communication at Well-Reservoir Contact.
For PLT in injection well see ILT, although it is often called PLT anyway
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Definition
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The survey is performed with a multi-sensor
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downhole PLT Logging Tool
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and interpreted
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with PLT-BFP Model
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PLT is essential part of the production and recovery monitoring and helps understand fluid communication at wellbore ↔ reservoir contact.
Objectives
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Picking up the fluid inflow intervals and phase characterization |
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Picking up the fluid injection intervals
Estimating flowrate of each phase component across each inflow |
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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 |
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Deliverables
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Oil Producer
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Fig.1 . PLT in producer with oil and water production.
Conclusions |
Both perforations are producing oil and water with upper interval producing more than lower. The lower inflow zone is mostly producing water. |
Fig. |
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1. PLT in |
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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.
oil producer with oil and water production. See ILT for example in injecting well. |
See
Logging tool
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Procedure
See article PLT – Logging Procedure
Interpretation
See article PLT – Interpretation
Samples
See article PLT – Samples
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Also
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Petroleum Industry / Upstream / Data Acquisition /
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Well & Reservoir Surveillance / Well logging / Cased-Hole Logging
[ Well & Log Analysis ][ Borehole Flow Profile (BFP) ][ Reservoir Flow Profiling (RFP) ][ Temperature Logging ][ Noise Logging ]
[ Well & Reservoir Surveillance ]
[ PLT – Donwnhole Tools ] [ PLT – Logging Procedure ] [ PLT – Interpretation ] [ PLT – Samples ]
References
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Richard Bateman, Cased Hole Log Analysis and Reservoir Performance Monitoring, 2015
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