Identifying oil well sites

Details Identifying oil well sites Identifying oil well sites

E - Fixed Constructions

21

B

E21B 49/02 (2006.01)

Patent

CA 2154525

Methods for determining maximum oil saturation and possible oil zone location use natural oil inclusions in rock grains of granular rock samples. A first technique involves quantitatively determining the total number of grains in the sample and, of those grains, the number that include oil within them, thereby yielding a ratio (GOI); and correlating that ratio against standard rock samples to yield the maximum oil saturation. A second technique involves determining the location of oil containing and/or oil absent zones in geological sites by (a) sampling in the geological site from a first rock portion capable of granular retention of oil and subjecting the first rock portion sample to the technique of GOI; (b) sampling in the geological site from one or more further and distinct rock portions, each capable of granular oil retention, and subjecting the or each further rock portion sample to the technique of GOI; and (c) comparing the results of GOI between the first rock portion and one or more of each further rock portion to determine whether or not the or each further rock portion is located in a different zone within the geological site from that of the first rock portion.

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