... differences that correspond to a "negative" resistivity in a homogeneous formation, the amount of data lost when converting magnetic fields into apparent resistivities is minimized, thus leading to a more robust inversion method that also convergences faster. The developed inversion method can be used...

... dispersion curve Upstream Oil & Gas variation borehole acoustic data inversion p-wave velocity log analysis dispersion data radial variation homogeneous formation inversion method frequency leaky-p wave China University Symposium dispersion characteristic SPWLA 52ndAnnual Logging...

... near-borehole resistivity vertical resolution well logging Frenkel multiscale model interpretation resolution homogeneous formation Symposium resistivity Upstream Oil & Gas array lateral log inversion formation imaging method imaging method formation model spwla 47 multiscale...

... response even in homogeneous formations when other effects are small. These two effects can be present simultaneously. This paper demonstrates a new algorithm that simultaneously corrects for both dielectric and anisotropy effects when using multiple-spacing LWD resistivity measurements. This algorithm...

... formation geometry apparent conductivity propagation effect geometry Upstream Oil & Gas calculation example 2 propagated geometric factor well logging induction contribution homogeneous formation log analysis doll geometric factor vector potential equation receiver coil...