Feature selection for reservoir characterisation by Bayesian network

Pedram Masoudi (1) , Yousef Asgarinezhad (1) , Behzad Tokhmechi (1)

1 School of Mining, Petroleum and Geophysics Engineering

The more accurate feature identification, the more precise reservoir characterisation. Porosity, permeability and other rock properties could be estimated and classified by analytical and intelligent methods. Feature selection, plays a vital role in the process of identification. In this work, two goals are followed: first, developing Bayesian Network, K2 algorithm, as a complementary means (not an alternative) to find interrelationships of petrophysical parameters. Second, feature conditioning for estimating porosity and permeability, vug and fracture detection, and net pay determination. Due to the results, bulk density log is introduced as the most important feature for characterising the reservoir because it is found useful for identifying all the studied reservoir features.

Keywords: feature conditioning; porosity; permeability; fracture; vug; net pay

Domains: Applied geology

Pedram Masoudi, Yousef Asgarinezhad, Behzad Tokhmechi. Feature selection for reservoir characterisation by Bayesian network. Arabian Journal of Geosciences, 2015, 8 (5), pp.3031-3043. ⟨10.1007/s12517-014-1361-7⟩. ⟨insu-01382419⟩