Characteristics of the sum of cross-components of triaxial induction logging tool in layered anisotropic formation

D Hong, J **ao, G Zhang, S Yang - IEEE Transactions on …, 2013 - ieeexplore.ieee.org
There are two nonzero cross-components of a triaxial induction logging tool in the medium
coordinate system in a transversely isotropic (TI) formation. The sum of the cross …

An analytic algorithm for electromagnetic field in planar-stratified biaxial anisotropic formation

N Li, D Hong, W Han, QH Liu - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
An analytic algorithm is developed to solve the electromagnetic (EM) field excited by
orthogonal magnetic dipoles in the multilayered biaxial anisotropic medium. It allows …

1D single-site and laterally constrained inversion of multifrequency and multicomponent ground-based electromagnetic induction data—Application to the …

C Schamper, F Rejiba, R Guérin - Geophysics, 2012 - library.seg.org
Electromagnetic induction (EMI) methods are widely used to determine the distribution of the
electrical conductivity and are well adapted to the delimitation of aquifers and clayey layers …

Electromagnetic surveying

L Macgregor, D Andreis, N Barker - US Patent 8,265,913, 2012 - Google Patents
A method of analysing results from a controlled source electromagnetic survey of a region of
interest containing a previously identified geological structure suitable for bearing …

Modeling and analysis of the response of a triaxial, frequency-domain electromagnetic induction sensor to a buried linear conductor

SP McKenna, JR McKenna - Geophysics, 2010 - library.seg.org
This paper presents analytical modeling results for a triaxial frequency-domain
electromagnetic-induction (EMI) sensor over a homogeneous earth containing a long linear …

[PDF][PDF] Effects of petrophysical, environmental, and geometrical parameters on multi-component induction measurements acquired in high-angle wells

RK Mallan, C Torres-Verdin - SPWLA Annual Logging Symposium, 2006 - Citeseer
This paper describes a numerical study examining the effects of petrophysical,
environmental, and geometrical parameters on multi-component electromagnetic (EM) …

Simulation and analysis of the symmetrical measurements of a triaxial induction tool

M Li, X Yue, D Hong, W Han - IEEE Geoscience and Remote …, 2014 - ieeexplore.ieee.org
In this letter, we present new insight into the response behaviors of triaxial induction tools.
The symmetrical measurements by two sets of receiving coils fixed on both sides of the …

Time-lapse variations of multi-component electrical resistivity measurements acquired in high-angle wells

A Moinfar, C Torres-Verdin, RK Mallan… - … -The SPWLA Journal of …, 2010 - onepetro.org
Measurements of electrical conductivity anisotropy are becoming increasingly common in
LWD and open-hole environments. At the same time, field experience indicates that invasion …

Computation of sensitivity for resistivity measurements

JM Donadille, MG Luling, GN Minerbo - US Patent 7,756,641, 2010 - Google Patents
The present invention provides methods and systems for numerically computing tool
response sensitivities of subterranean measurement tools such as resistivity logging tools …

The effects of anisotropy on 3D single-well imaging

R Mallan, D Alumbaugh - SEG International Exposition and Annual …, 2004 - onepetro.org
This paper addresses the effects of electrical anisotropy toward the 3D inversion of single-
well induction logging data, when anisotropy is not considered. Of concern are possible …