Inventors:
Christopher Michael Reddy - East Falmouth MA, US
Oliver C. Mullins - Ridgefield CT, US
Bhavani Raghuraman - Wilton CT, US
Robert K. Nelson - Mashpee MA, US
Assignee:
Schlumberger Technology Corporation - Cambridge MA
Woods Hole Oceanographic Institution - Woods Hole MA
International Classification:
G01N 30/02
Abstract:
A method of estimating contamination of oil based mud filtrate in a hydrocarbon sample. The method comprising the steps of obtaining a hydrocarbon sample contaminated with oil based mud filtrate, then analyzing the contaminated hydrocarbon sample using two-dimensional gas chromatography (GC×GC). The method further comprises identifying one or more unique component or tracer in the oil based mud filtrate in the contaminated hydrocarbon sample. Finally, the method comprises of summing the peak volumes of the one or more unique component or tracer, relative to the peak volumes of a clean hydrocarbon sample.