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1. (WO2014209444) A METHOD OF QUANTIFYING HYDROTHERMAL IMPACT

Pub. No.:    WO/2014/209444    International Application No.:    PCT/US2014/031172
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Thu Mar 20 00:59:59 CET 2014
IPC: G01V 99/00
Applicants: CHEVRON U.S.A. INC.
Inventors: THOMAS, Andrew Ralph
Title: A METHOD OF QUANTIFYING HYDROTHERMAL IMPACT
Abstract:
Methods for quantifying a hydrothermal impact on a stratigraphic unit are disclosed herein. In particular, the described methods may be used to quantify hydrothermal anomalies of a stratigraphic unit of a geological reservoir, where porosity reduction in the stratigraphic unit would have been accelerated some point or points in the past. Embodiments of the method generally comprise (a) receiving first data indicative of a reservoir temperature associated with the stratigraphic unit, (b) receiving second data indicative of estimates of the trapping temperatures associated with a plurality of fluid inclusions in a sample of the stratigraphic unit, (c) generating comparison data indicative of a comparison between the first data and the second data, and (d) generating based on the comparison data an impact parameter indicative of a hydrothermal impact on the stratigraphic unit.