Search results

Gas reservoirs with estimated ''in situ'' gas permeabilities of 0.1 md (millidarcy) or less are officially recognized by the U.S. Federal Energy Regulatory Co ...expected. While the average air permeability values rarely exceed 1.0 md (millidarcy) for tight gas reservoirs, a significant difference in permeability values

...The standard unit for permeability is the Darcy (d) or, more commonly, the millidarcy (md). Relative permeability is a dimensionless ratio that reflects the capa ...which square meters represents the standard dimension of permeability. The millidarcy, which is one-thousandth of a darcy, is commonly used in [[Overview of rout

...that consists of various metric, English, and oil field units. It uses the millidarcy (md) for permeability. Other dimensions and units in this system are as fol

...permeability. Formations having an average effective permeability of 1 mD (millidarcy) or less generally require reservoir stimulation methods, while those havin

...kover Formation in Arkansas and Louisiana, shows 30% porosity but only one millidarcy or less permeability.<ref name=Halley /> Grainstone shoals are known to acc