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High-frequency EM Log Data Interpretation in Realistic Reservoir Models
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 6th EAGE Saint Petersburg International Conference and Exhibition, Apr 2014, Volume 2014, p.1 - 5
Abstract
Some aspects of the numerical interpretation of VEMKZ (High-frequency electromagnetic logging) data are considered in paper. Algorithms have been created for the solution of forward and inverse problems in numerical interpretation of electromagnetic logs in realistic models of terrigenous reservoirs penetrated by vertical, inclined or horizontal wells. The signals modified by dielectrical permittivity were investigated. There also have been developed algorithms for numerical correction of borehole rugosities and probe eccentricity effects. Effective algorithms for fast two-dimensional modeling and inversion were developed. Joint two-dimensional inversion for relative amplitude and phase characteristics measured in electromagnetic logging allows to estimate electrical conductivity and dielectric permittivity. Algorithms for modeling in inclined and horizontal wells allow to investigate signal features when approaching and crossing boundaries. High-performance calculations on GPU allow to carry out numerical interpretation of data in real time.