Schlumberger Technology Corporation

Laetitia Comparon

Andrew J Hayman

Richard Bloemenkamp

Isabelle Le Nir

Mehdi Hizem

Alexis He

Nadege Bize-Forest

Bashar Qamhiyeh

Martin Carles

Process for interpreting one or more borehole images for use in drilling operations. In some embodiments, the process can include providing an input borehole image obtained from a downhole measurement provided by one or more downhole sensors. The process can also include collecting contextual information relative to the borehole image and the user. The process can also include using the collected contextual information and a mathematical model to infer one or more processing arguments. The mathematical model can be defined by using previously collected arguments and previously collected contextual information. The process can also include processing the input borehole image with the one or more inferred processing arguments to generate one or more interpreted borehole images. The process can also include adjusting one or more drilling operation based, at least in part, on the one or more interpreted borehole images.

Process of providing an interpreted borehole image

System and methods of generating calibrated downhole images of a subterranean formation () surrounding a wellbore (). The method involves placing a pad at a distance from a highly conductive surface and measuring a current between return electrodes of the pad and the highly conductive surface. The current may be used to determine a theoretic impedance of the current path, and impedance amplitude and impedance phase may be calibrated using theoretical impedance phase and theoretical impedance amplitude. Multiple standoff calibrations and temperature variation calibrations may also be used.

Method and system for calibrating a downhole imaging tool

System and methods of generating calibrated downhole images of a subterranean formation () surrounding a wellbore (). The method involves measuring open hole and cased hole measurements with a downhole tool (); determining () open hole parameters (e.g., Z90) from the cased hole parameters, known parameters and the open hole measurements; and generating () downhole outputs from the determined open hole parameters.

A method and system to predict dielectric behavior in a wide frequency range in a wellbore. The method comprising: deploying a tool in a wellbore, measuring the permittivity and conductivity at more than one frequency of a formation with the tool, and predicting the dielectric behavior of saline water in a wide band frequency range and temperature.

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Malakoff, France

Laetitia Comparon