Schlumberger Technology Corporation

Helena Gamero Diaz

Josselin Kherroubi

Richard E Lewis

Tuanfeng Zhang

Erik Rylander

Laurent Mosse

Christina Calvin

Methods may include normalizing two or more wellbore logs obtained from the output of two or more wellbore tool surveys of a wellbore in a formation of interest; inputting two or more wellbore logs into a correlation matrix; assigning each of the two or more wellbore logs a positive or negative value based on the impact on a selected wellbore quality; performing a principal component analysis of the two or more wellbore logs to obtain one or more loading vectors; computing weighting factors for each of the two or more wellbore logs from the one or more loading vectors; and generating a quality index by linearly combining the two or more wellbore logs using the computed weighting factors.

Data fusion technique to compute reservoir quality and completion quality by combining various log measurements

A method can include receiving data for a geologic environment where the data include data acquired via different types of borehole tool sensors; based at least in part on the data, determining rock composition of the geologic environment where the rock composition includes depositional components and diagenetic components; and, based at least in part on the rock composition, outputting a stratigraphic model of at least a portion of the geologic environment.

Diagenetic and depositional rock analysis

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Frisco, TX, United States of America

Helena Gamero Diaz