Abstract

Evaluating fault seal risk is an important factor in hydrocarbon exploration and production. This uncertainty in faults is analyzed and fault categorization is made based on wall rock juxtapositions, membrane seal caused due to fault rock deformation process and reactivation. However, wall rock juxtapositions and membrane seals are studied in detail with the help of Triangle juxtaposition diagram. Shale Gouge Ratio (SGR) is the parameter which explains about the membrane seal. SGR is calculated using the algorithm given by Yielding et al., (1997).