Proper Assessment of Shale Oil

by Catherine Parsekian

According to the results of a study done in China by Li et. al (2016), there is no method for measuring oil potential in shale reservoirs that includes both residual oil contents in the rocks as well as hydrocarbon expulsion and migration conditions. Li and his colleagues developed soon an index for determining oil potential. If the index is greater than zero, then some of the oil has migrated to external reservoirs which means that it has poor shale oil potential. Li et. al. argue that because current methods include absorbed, as well as free hydrocarbons, they are overvaluing the shale oil and not looking at oil that can readily be used. The method developed in this paper has multiple parameters and is a more comprehensive measurement since it takes into account oil saturation, free oil content, and shale oil expulsion. Continue reading