Ensuring Reliable SCAL Data for Reservoir Modeling

Reservoir Descriptions and Dynamics Management and Information


Special Core Analysis, SCAL data has a direct impact on the way fluids are allocated and distributed in the reservoir simulation models, which would directly impact reservoirs’ STOIIP estimation and their distribution. Moreover, it directly affects the performance of secondary and EOR flooding processes, and in turn impacts the accuracy of the oil and gas reserve estimates, and the management of these reserves. Therefore, SCAL data could be considered as one of the most critical reservoir input data for reservoir simulation models.

This course will shed light on the theoretical and experimental background of SCAL data. It will explain the concept of reservoir wettability and different factors that could induce changes in reservoir wettability. Further, the course will cover the concept of capillary pressure and its associated hysteresis for different wettability conditions, followed by the concepts of two phase water/oil and gas/oil relative permeability curves and how to generate three relative permeability data for water wet, mixed and oil wet reservoirs. Furthermore, the course will clarify the saturation end point of both capillary pressure and relative curves as a function of reservoir heterogeneity and wettability. Finally, the course will support the idea of reservoir wettability profile, when will it happen and how to deal with it.

Topics Include: 

  • Principals of Special core analysis data
  • Concepts of the different elements of SCAL data, including:
    • Reservoir wettability
    • W/O and G/O Capillary Pressure
    • Two Phase, W/O and G/O Relative Permeability 
    • Three Phase Relative Permeability
  • Effect of reservoir heterogeneity on SCAL data and static rock typing
  • Effect of reservoir wettability on SCAL data and dynamic rock typing 
  • Reservoir saturation history and hysteresis effect on capillary and relative permeability curves.
  • Saturation end point and oil trapping
  • Wettability profile and how to deal with it.
  • Proper utilization of SCAL data for reservoir characterization and modeling.

Learning Level


Course Length

1 Day

Why Attend?

Learn how SCAL data can have a direct impact on the way fluids are allocated and distributed in the reservoir simulation models, the performance of secondary and EOR flooding processes, and accuracy of the oil and gas reserves estimates.

Who Should Attend

This course is designed for Technical Managers, Reservoir Engineers, Reservoir Geologists, Petrophysicist, and Geophysicists. This course is also designed for Research and Development Engineers.


0.8 CEUs (Continuing Education Units) awarded for this 1-day course.


Shawket Ghedan is currently a Reservoir Simulation Engineering Advisor with CMG. He has got more than 22 years of both academic and industrial experience in the area of reservoir engineering, management and modeling. Currently, Shawket is supervising and modeling various applications of thermal recovery processes for heavy oil reservoirs as well as modeling oil and gas production form tight and unconventional reservoirs. Previously, he held associate professor positions with the Petroleum Institute of Abu Dhabi and University of Baghdad. He also held senior reservoir simulation positions with ADNOC and ADMA. Furthermore, he was senior instructor and consultant with NExT-Schlumberger. Shawket is currently interested in the area of thermal recovery processes in carbonate naturally fractured reservoirs and chemical flooding. He is also interested in reservoir characterization, and reservoir modeling of waterflooding, and hydrocarbon gas and CO2-compositional flooding, applied especially for carbonate reservoirs.

Shawket has authored more than 40 technical papers, and has taught many reservoir engineering and reservoir modeling courses world-wide. He holds BSc degree in Petroleum Engineering from University of Baghdad, ME and PhD degrees in Reservoir Engineering from Colorado School of Mines. Shawket is currently involved in a number of SPE international activities. He was SPE distinguished lecturer for 2005-2006. He was awarded the 2009 MENA regional reservoir description and dynamics technical award, 2010 SPE outstanding technical editor award, and 2011 MENA regional distinguished petroleum engineering faculty award.

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