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Oil & Gas Training
and Competency Development
Competency Management system SLB NEXT

Advanced Reservoir Monitoring

This 5-day Advanced Reservoir Monitoring course covers every aspect of reservoir monitoring that includes:

  • Pulsed Neutron Logging (PNL) capture mode
  • PNL Inelastic (C/O) mode
  • Formation Resistivity (Rt) behind conductive (steel) casing
  • Formation Resistivity (Rt) behind non-conductive (plastic or fibreglass) casing
  • Field-wide water flood mapping
  • Log-Inject-Log to estimate the absolute residual oil saturation (Sro)
  • Cross-well electromagnetic water saturation mapping to monitor water flood movements.

The course will also have 1-2 hours/day workshop sessions using 20 field data examples.

Day 1

Day-1

  • Agenda and Nomenclature
  • Reservoir Monitoring- Introduction
  • Reservoir Fluids
  • Reservoir drive mechanisms
  • The skin factors
  • Life of a well
  • Life of a reservoir
  • Why run reservoir monitoring logs?
  • Overview of open hole log evaluations. This is important as Open Hole log evaluations are the input to cased hole reservoir monitoring.

1-hour workshop on openhole log evaluation

 

Day 2

Day 2

  • Nuclear physics of reservoir monitoring and pulsed neutron logging (PNL)
  • PNL Tools: Pulsed Neutron Generator, Scintillation detectors.
  • PNL for Capture cross section measurements
  • Standalone PNL interpretations in wells with no log data in Clastic and carbonate reservoirs
  • Techniques for estimating formation water salinity:
    • Wells with Sw=100%
    • Depleted reservoirs with no 100% water zones.
    • In wells with variable water salinity

1- hour workshop on Capture mode interpretation and water salinity evaluations

 

 

Day 3

 Day-3

  • PNL Spectroscopy
  • PNL for Inelastic (Carbon/Oxygen: C/O) logging applications
  • C/O processes to compensate for borehole effects.
  • Combining capture mode (sigma) and C/O mode for salinity evaluation
  • The new generation of PNL (PNX) for C/O evaluation. Applications
    • New tool hardware configuration
    • Improved Carbon/Oxygen data with 21 short bursts in the the inelastic domain
    • Improved gas detection and evaluations using high neutron capture cross-section

1 hour workshop on Inelastic (C/O) interpretations

  

 

Day 4

Day-4

  • Gravel Pack Logging
  • Log-Inject-Log to estimate Residual Oil Saturation
  • Field mapping of water flood to identify unswept zones.
  • Pressure measurements and sampling behind casing

Applied workshop on residual oil saturation

 

Day 5

 Day-5

  • Formation resistivity behind conductive (steel) casing
  • Formation resistivity evaluation behind non-conductive (plastic, fibreoptic) casing
  • Cross-Well Electromagnetic Monitoring
  • Spectral analysis to obtain Total Organic Carbon (TOC).

Workshop on formation resistivity behind casings

Learning activity mix

This course will be suitable for Petrophysicists, reservoir engineers and production engineers that are involved in managing and optimising field production. Over the last few years, there has been large technology improvement in monitoring, and this will be covered in detail.

Greater than 2 years of experience interpreting reservoir monitoring logs is recommended.  You are encouraged to bring difficult log examples for in-class discussion and interpretation.

Currently there are no scheduled classes for this course.

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