Determination of a rock physics model for the carbonate Fahliyan Formation in two oil wells in southwestern Iran
SeyedBijan Mahbaz 1 4 Hadi Sardar 2 Hossein Memarian 31 Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, Canada.
2 Geo-Engineering Lab, University College of Engineering, University of Tehran, Tehran, Iran.
3 Faculty of Mining Engineering, University College of Engineering, University of Tehran, Tehran, Iran.
4 Corresponding author. Email: bijan.mahbaz@gmail.com
Exploration Geophysics 43(1) 47-57 https://doi.org/10.1071/EG11006
Submitted: 17 January 2011 Accepted: 2 December 2011 Published: 7 February 2012
Abstract
Geophysical methods, especially seismic inversion, have improved considerably in recent years. The prediction of elastic behaviour is important to decrease risk in mining operations. The investigation of rock physics is a way to predict rock behaviours, especially reservoir geomechanical parameters. The first step in rock physics studies is to diagnose and introduce a suitable rock physics model. In this paper, we review rock physics models, such as the Rymer–Greenberg–Castagna model, and we compare them with real data trends in two oil wells of a carbonate reservoir (the Fahliyan Formation) in the Zagros Basin of southwestern Iran using sonic, density and porosity logs. After omitting the effect of water saturation and clay content, the best model for clean carbonate of the Fahliyan Formation was developed in two oil wells (A1 and A2).
Key words: elastic parameters, Fahliyan Formation, geomechanical parameters, Iran, rock physics, Rymer–Greenberg–Castagna model.
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