Evaluation of Coalbed Fracture Porosity from Dual Laterolog


Darrell Hoyer,Union Texas Petroleum Corporation

SPWLA 32nd Annual Logging Symposium, June 16-19, 1991


A technique to quantify natural fracture porosity in coalbeds using the Dual Laterolog tool has been developed. The magnitude of fracture porosity has a direct relationship to reservoir permeability and the viability of a coalbed methane recovery project. While induction as well as other resistivity logs are often recorded in wells to evaluate coal, analysis is typically limited to inferences of permeability.