Schlumberger Technology Corporation

Schlumberger Canada Limited

Jinglin Gao

Oliver Clinton Mullins

Kentaro Indo

Bhavani Raghuraman

Chengli Dong

Shahnawaz Hossain Molla

Abdel Kharrat

Soraya Sofia Betancourt

Michael O'Keefe

John Ratulowski

Gale Hyslip Gustavson

Francois Xavier Dubost

Philip Rabbito

Moin Muhammad

Farshid Mostowfi

Craig Borman

Youxiang (Julian) Zuo

Abdel M Kharrat

Oliver C Mullins

Michael O'keefe

Gale Gustavson

Soraya S Betancourt

Francois Dubost

Youxiang (julian) Zuo

A microfluidic apparatus includes a substrate defining a microchannel having inlet and an outlet defining a length of the microchannel. The microchannel has a main channel extending from the inlet to the outlet, and a plurality of side cavities extending from the main channel. The cavities are in fluid communication with the main channel. A method includes introducing a sample into the microchannel through the inlet to fill the entire microchannel, and then introducing a solvent into the microchannel through the inlet at a controlled flow rate and inlet pressure. A developed solvent front then moves along the main channel from the inlet to the outlet while displacing the sample in the main channel. Images of the microchannel are acquired as the front moves, and a miscibility condition is determined based on the images.

Microfluidic technique for detection of multi-contact miscibility

A method and system for characterizing asphaltene gradients of a reservoir of interest and analyzing properties of the reservoir of interest based upon such asphaltene gradients. The analysis employs a correlation that relates insoluble asphaltene concentration to spectrophotometry measurement data measured at depth.

Methods and apparatus for analysis of downhole asphaltene gradients and applications thereof

Methods and apparatuses for high-temperature and high-pressure measurement of pH and/or alkalinity of a fluid is described.

Spectroscopic pH measurement at high-temperature and/or high-pressure

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Edmonton, Canada

Jinglin Gao