Changes

The following definitions for fracture, fracture reservoir, and fracture trap are used in the classification scheme.

The following definitions for fracture, fracture reservoir, and fracture trap are used in the classification scheme.

'''Fracture'''—Approximately planar surface along which originally contiguous rocks have broken and separated and along which the relative displacement of originally adjacent points across the fracture is small compared with fracture length (from .<ref name=ch02r10>Pollard, D., D., Segall, P., 1987, Theoretical displacements add stresses near fractures with applications to fault, joints, veins, dikes, and solution surfaces, in Atkinson, B., K., ed., Fracture Mechanics of Rock: London, Academic Press, p. 277–349.</ref>

'''Fracture'''—Approximately planar surface along which originally contiguous rocks have broken and separated and along which the relative displacement of originally adjacent points across the fracture is small compared with fracture length.<ref name=ch02r10>Pollard, D., D., Segall, P., 1987, Theoretical displacements add stresses near fractures with applications to fault, joints, veins, dikes, and solution surfaces, in Atkinson, B., K., ed., Fracture Mechanics of Rock: London, Academic Press, p. 277–349.</ref>

'''Fracture Reservoir'''—Reservoir in which most of the [[permeability]] and some of the porosity is provided by open fractures.

'''Fracture Reservoir'''—Reservoir in which most of the [[permeability]] and some of the porosity is provided by open fractures.