Patent ID: 6097027
Filing Date: 2000-08-01
Classification: G01N,G01V

Abstract:
A method of using natural oil inclusions in rock that is capable of oil entrapment to determine whether that rock has had or presently contains oil, the method comprising the steps of:(a) selecting two or more two-dimensional zones of equal size on a sample of the rock to yield a known number of zones;(b) determining a ratio of the number of zones that contain oil inclusion(s), or the number of zones that do not contain oil inclusion(s), as against the known number of zones selected, either by:(i) counting the number of ones with oil inclusion(s) therewithin and expressing that against the known number zones to yield a ratio; or(ii) selecting randomly a given number of zones within the known number of zones, counting the number of zones with oil inclusion(s) therewithin in the given number of zones, and expressing that against the given number of zones to yield a ratio; and(c) comparing that ratio against standard rock samples to thereby enable the determination to be made as to whether or not the rock has had or presently contains oil.