Permeability-porosity data sets for sandstones

Permeability-porosity relations vary from formation to formation, so it is desirable to obtain core and determine permeability (k) and porosity (φ) on core plugs in the laboratory for the formation of interest. If core data are not available, one might resort to data obtained in formations with similar properties. Analog data are not easy to find, however, and for this reason a catalog of k versus φ data sets has been compiled and made available on a Web site (see suggested reading). The catalog cites relevant observations such as depositional environment, depth, age of formation, field name, and petrographic description as well as complete references to data sources. Examples from the catalog are shown here to illustrate some aspects of k versus φ dependencies.