Although the directional sensitivity and deep investigation depths of directional logging-
whiledrilling (LWD) resistivity tools have led to their wide use in detecting bed boundaries for …

Detection and quantification of formation resistivity anisotropy is important in many
reservoirs, particularly those with laminations thinner than the axial resolution of standard …

Electromagnetic (EM) resistivity tools measure the electrical properties of downhole
formations that are critical in determining the hydrocarbon saturation of a reservoir. In …

An inversion-based workflow has been developed for resistivity anisotropy and formation dip
evaluation using deep directional resistivity and conventional array resistivity measurements …

A new logging-while-drilling (LWD technology has been developed and field-tested that
introduces directional electromagnetic (EM measurements through the use of tilted and …

Resistivity anisotropy is not uncommon in earth formations, and the knowledge of its
presence and degree can be valuable in petrophysical analysis, well planning, and rig-site …

This paper describes an extension of a recently developed fast inversion method (Pardo and
Torres-VerdÍn (2015)) for estimating a layer-by-layer electric resistivity distribution from …

Over the last two decades, the continuing integration of distance-to-boundary logging while
drilling (LWD) workflows with the directional drilling processes, has dramatically improved …

ABSTRACT Measurement While Drilling (MWD) propagation resistivity tools require several
environmental corrections to achieve accurate results. The environmental effects that require …

We present systematic sensitivity analyses of logging-while-drilling azimuthal resistivity
measurements (ARM). These analyses provide us the clear images of the sensitivities of the …