1. Vertical resolution enhancement of petrophysical Nuclear Magnetic Resonance (NMR) log using ordinary kriging
- Author
-
Parisa Bagheripour, Ayoob Nazarpour, and Mojtaba Asoodeh
- Subjects
QE1-996.5 ,Correlation coefficient ,Resolution (electron density) ,Petrophysics ,resolution enhancement ,Geology ,Geostatistics ,Environmental Science (miscellaneous) ,petrophysics ,Permeability (earth sciences) ,nuclear magnetic resonance ,Nuclear magnetic resonance ,Data point ,Kriging ,General Earth and Planetary Sciences ,geostatistics ,Porosity ,ordinary kriging - Abstract
Nuclear Magnetic Resonance (NMR) logging provides priceless information about hydrocarbon bearing intervals such as free fluid porosity and permeability. This study focuses on using geostatistics from NMR logging instruments at high depths of investigation to enhance vertical resolution for better understanding of reservoirs. In this study, a NMR log was used such that half of its midpoint data was used for geostatistical model construction using an ordinary kriging technique and the rest of the data points were used for assessing the performance of the constructed model. This strategy enhances the resolution of NMR logging by twofold. Results indicated that the correlation coefficient between measured and predicted permeability and free fluid porosity is equal to 0.976 and 0.970, respectively. This means that geostatistical modeling is capable of enhancing the vertical resolution of NMR logging. This study was successfully applied to carbonate reservoir rocks of the South Pars Gas Field.
- Published
- 2013