Open AccessResearch on triaxial array induction logging response in inclined anisotropic formation
Author(s) -
Miaoyu Zhang,
Jie Wu,
Yanping Liu
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1617/1/012086
Subject(s) - anisotropy , conductivity , coordinate system , inversion (geology) , geology , coaxial , electrical resistivity and conductivity , materials science , mechanics , geometry , physics , optics , engineering , electrical engineering , mathematics , seismology , tectonics , quantum mechanics
The logging response calculation and fast inversion are the key and difficulties for logging data interpretation and formation parameter estimation of the triaxial array induction logging. We transform the formation conductivity from media coordinate to instrument coordinate based on coordinate transformation theory. This paper examines anisotropic response of the triaxial array induction in inclined anisotropic formation by finite element method. The greater the anisotropy coefficient is, the more obvious the curve separation. The apparent conductivity decreases with the increase of dip angle for the coaxial system, but the coplanar system increases. The research results show that the apparent conductivity of the coplanar system appears as obviously positive and negative horns on the horizontal interfaces, which is generated by the accumulated surface charge at the boundary of the layer.