... show that tighter core with abundant micro and nano fractures exhibit a more stress dependent matrix permeability characteristics. Drillstem Testing Upstream Oil & Gas pressure equation flow regime net stress rate transient analysis shale reservoir balance method drillstem/well...

... Abstract Gas conductivities of narrow natural fractures in sandstone and chalk were measured under varying stress and pore pressure conditions and showed a decrease in conductivity with increasing net stress. Natural fractures in mudstones exhibited continuously decreasing conductivity upon...