Permeability Characterization and Prediction in a Tight Oil Reservoir, Edson Field, Alberta

Date
2015-04-24
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Abstract
Extremely low and heterogeneous permeability is an important characteristic of tight oil reservoirs and poses major challenges to predict. The aim of this work is to develop a permeability predictor based on a tight area of the Cardium Formation, Edson Field, Alberta using log and core measurements from one well. Experimental design analysis indicates that the deep resistivity, GR, and SGR logs show stronger correlation with permeability than other conventional wireline measurements. We also tested a literature permeability estimation model designed for tight formations using conventional well logs which worked better in the shaly siltstone (R2 = 0.94) than the shale and conglomerate (R2 < 0.5) facies. Among the less conventional logs run in this well, we used the NMR log to predict permeability. A pore size-related lithofacies model was built based on the T2 spectrum decomposition. It gave accurate lithofacies proportion estimates based on our core analysis and data from published studies. Integrating the NMR analysis with probe permeability, our approach provides a ‘bridge’ to connect the permeability between the probe scale (<1 cm laminations) and core size (>15 cm thin beds) samples.
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Keywords
Engineering--Petroleum
Citation
Di, J. (2015). Permeability Characterization and Prediction in a Tight Oil Reservoir, Edson Field, Alberta (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/27310