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Application of the Lucia Method in Carbonate Petrophysics


Jerry Lucia has published several publications on the Lucia Method and its application to carbonate petrophysics (Lucia, 1987, 1995, and 2000). Using a combination of thin section analysis, porosity, permeability, plus capillary pressure data he was able to develop a technique so that the geologist/engineer could determine the permeability and water saturation of a carbonate reservoir using only knowledge of porosity, crystal or grain size, and height above the free water level (Pc = 0). Later, Lucia got together with an engineer and published a paper using the Lucia concept to develop a method to calculate irreducible water saturation (Swirr) of a carbonate reservoir using only porosity and crystal or grain size (Jennings and Lucia, 2003).

The Lucia Method has great application in older carbonate fields with only “OLD” Gamma Ray-Neutron logs, or in pre-1952 fields when salt mud resistivity logs [Laterologs] were unavailable. However, there are other important applications of the Lucia Method. This presentation is designed to illustrate seven applications of the Lucia Method to the analysis of carbonate reservoirs.