Prediction of Shear Wave Velocity from Porosity Logs Using Fuzzy     Logic & Neuro-Fuzzy Techniques in One of the Iranian Southern Carbonate Reservoirs

Rajabi, M.; Bohloli, B.; Mohammadinia, M.; Gholampour Ahangar, E.

doi:10.22071/gsj.2018.55221

Document Type : Original Research Paper

Authors

¹ School of Geology, University College of Science, University of Tehran, Tehran, Iran

² National Iranian Oil Company, Exploration Directorate, Tehran, Iran

³ , Tehran, Iran(3Petroleum Engineering and Development Company (PEDEC

https://doi.org/10.22071/gsj.2018.55221

Abstract

The shear and compressional wave velocities (Vs and Vp, respectively) have many applications in petrophysical, geophysical and geomechanical studies. Vp is very easily obtained from sonic logs that are available in most of oil and gas wells, but some wells (especially old wells) may not have Vs data. In this study Vs was predicted from porosity well log data (neutron, density and sonic) using fuzzy logic and neuro-fuzzy techniques. For this purpose a total of 3910 data points from Sarvak carbonate reservoir which have Vs and porosity log data were utilized. These data were divided into two parts, one part included 2046 data points used for constructing models and the other part included 1864 data points used for testing models. The results show that fuzzy logic and neuro-fuzzy techniques were useful methods for prediction of Vs in this carbonate oil reservoir.

Keywords

20.1001.1.10237429.1390.20.80.8.6

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Scientific Quarterly Journal of Geosciences

Prediction of Shear Wave Velocity from Porosity Logs Using Fuzzy Logic & Neuro-Fuzzy Techniques in One of the Iranian Southern Carbonate Reservoirs

References

References

Volume 20, Issue 80
January 2011
Pages 63-70

Prediction of Shear Wave Velocity from Porosity Logs Using Fuzzy Logic & Neuro-Fuzzy Techniques in One of the Iranian Southern Carbonate Reservoirs

References

References

Volume 20, Issue 80January 2011Pages 63-70

Volume 20, Issue 80
January 2011
Pages 63-70