OG90
Course Contents
Module 1: Production Logging Objectives and Surveillance Context
Key Topics
- Role of production logging in well and reservoir management
- Production, injection and surveillance logging applications
- Well conditions affecting production log interpretation
- Flow regimes, wellbore geometry and completion effects
- PLT data types, tool strings and measurement principles
- Job objectives, operational constraints and success criteria
- Linking PLT results with allocation and surveillance workflows
Module 2: Production Logging Tools and Data Quality Control
Key Topics
- Spinner, array, optical and electromagnetic flow measurements
- Pressure, temperature, density and capacitance tool responses
- Holdup, phase identification and multiphase flow limitations
- Noise, oxygen activation and tracer logging applications
- Depth control, tool centralisation and conveyance challenges
- Stationary, continuous and repeat-pass logging practices
- Data quality checks, corrections and uncertainty recognition
Module 3: Advanced Interpretation and Flow Diagnosis
Key Topics
- Single-phase and multiphase production profile interpretation
- Inflow and outflow profiling across completed intervals
- Water entry, gas entry and unwanted phase identification
- Crossflow, thief zones and behind-pipe flow diagnosis
- Temperature anomalies and time-lapse profile interpretation
- Injection profile analysis and sweep efficiency indicators
- Integrating PLT with well tests, pressures and production history
Module 4: Allocation, Optimisation and Intervention Decisions
Key Topics
- Zonal production and injection allocation methods
- Allocation uncertainty and reconciliation with surface data
- Identifying underperforming zones and completion restrictions
- Diagnosing artificial lift and wellbore performance issues
- Selecting intervention, shut-off and stimulation candidates
- Evaluating production gains and post-intervention response
- Communicating PLT findings for asset decision-making
Module 5: Performance Surveillance and Integrated Case Review
Key Topics
- Surveillance plans for mature, complex and commingled wells
- Distributed Temperature Sensing (DTS), Distributed Acoustic Sensing (DAS) and permanent monitoring applications
- Production logging input to reservoir models and forecasts
- Dashboards, KPIs and exception-based surveillance workflows
- Well integrity, barrier and leak surveillance considerations
- Lessons learned from production logging case histories
- Practical Workshop: diagnose, allocate and recommend action