Applied Petrophysics (advanced)

Peter Betts 
5 days

Business context

In the E&P business, integrated petroleum engineering studies and field development plans are management tools which are used to maximise economic recovery of hydrocarbons. Petrophysical engineers fulfil a key role in analysing and interpreting subsurface reservoir data, which form the basis for reservoir models. E&P technical staff and team leaders involved in integrated studies require more than general skills in petrophysical interpretation techniques to produce quality input to development plans.

Who should attend

The course is primarily intended for junior petrophysical staff to augment the skills that they should have already acquired during basic training. The course is also suitable for participants from other disciplines, who wish to have more insight into petrophysical analysis methods. Such participants should be familiar with basic petrophysical principles and will typically have 2 to 5 years or more working experience in a geoscience or reservoir engineering function.


Course content

Subjects that are covered are petrophysical principles, deterministic and probabilistic interpretation methods for shaly sands and complex carbonates, cut-off criteria, capillary pressure and wellbore seismic. The main emphasis during the course is on practical application rather than extensive discussion around the theoretical background.

Shorter versions of the advanced course lasting three or four days are also available on request. The client can decide in consultation with the trainer which topics covered in the full five day version can be dropped in the shortened versions. Specialist courses covering shaly sand analysis lasting two days and capillary pressure lasting one day, can also be provided on request.

Learning, methods and tools

Throughout the course, work sessions will be held on PCs using a combination of Excel and Interactive Petrophysics software (subject to licensing). The importance of interaction between seismology, geology, reservoir engineering and other disciplines is emphasized and illustrated. During the 5 days, detailed evaluations of several representative wells will have been performed

Day by day programme

Day 1
The role of petrophysics in exploration & production
Review of petrophysical principles
Review of physics of main logging tools
Quick look evaluation methods and saturation determination
Basic and special core analysis methods
Wireline formation testing

Day 2 
Clastic reservoir geology and clay types
Shaly sand analysis for effective porosity systems using Archie,
Simandoux and Indonesian equations
Shaly sand analysis for total porosity systems using Waxman Smits equation
Cut-off criteria

Day 3
Shaly sand analysis for total porosity systems continued using Waxman Smits equation, Dual Water model and Juhasz normalised Qv model
Hydrocarbon differentiation in shaly sands
Evaluation of laminated shaly sands
Capillary pressure
Saturation height functions
Capillary pressure and reservoir simulation

Day 4
Permeability prediction (including NMR logging) and statistical considerations
Probabilistic methods for the analysis of complex formations (main emphasis on carbonates)
Uncertainty ranges

Day 5
Cased hole saturation determination and production logging
Wellbore seismic applications
Petrophysical support for geothermal projects, tight gas reservoirs and shale oil/gas projects