Core Analysis / SCAL Workshop
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Core data is the only direct measurement of reservoir rock properties available to an engineer. Everything else, from log interpretation to saturation modeling to simulation input, depends on how well that core data was acquired, measured and interpreted. Poor quality core data, or good data used incorrectly, carries errors straight through into in-place volumes and recovery forecasts.
This workshop covers routine core analysis (RCAL) and special core analysis (SCAL) from the wellsite through to application in reservoir studies. It begins with coring methods, core handling and preservation, and the effect of each stage on measured properties. It then moves into routine measurements, porosity, permeability, grain density and fluid saturation, including how these are corrected to reservoir conditions and how core data is calibrated against log-derived properties.
The second part addresses special core analysis. Participants work through wettability and its measurement, capillary pressure data and its use in saturation-height modeling and free water level determination, relative permeability measurement methods and curve fitting using Corey and other correlations, and electrical rock properties including the determination of Archie parameters from core. Rock compressibility and its role in material balance and simulation is also covered.
Throughout the workshop the focus is on quality control: recognising unreliable measurements, understanding laboratory procedures well enough to challenge a report, and selecting representative data for rock typing and reservoir modeling. The workshop is delivered at an advanced level and is intended for reservoir engineers, petrophysicists and geoscientists who use core data in their work.
Workshop Objectives
By the end of this workshop, participants will be able to:
Describe coring methods, core handling and preservation practices, and explain how each affects measured rock properties
Interpret routine core analysis measurements including porosity, permeability, grain density and saturation, and apply the necessary corrections to reservoir conditions
Quality-control laboratory reports and identify measurements that are unreliable or unrepresentative
Calibrate core-derived properties against log data for reservoir characterisation
Explain wettability, its measurement methods, and its influence on capillary pressure and relative permeability behaviour
Apply capillary pressure data to saturation-height modeling, free water level determination and rock typing
Interpret relative permeability measurements and fit the data using Corey and related correlations
Determine Archie parameters from electrical measurements on core samples and assess their reliability
Evaluate rock compressibility and apply it correctly in material balance and simulation studies
Select representative core data sets for use in reservoir modeling and recovery studies
About the Presenter
Eng. Hesham Mokhtar Ali
Senior Reservoir Engineer | Certified Instructor | MSc, Cairo University
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