Changes

Pore throat radius, ''r'', can be estimated in three ways:

Pore throat radius, ''r'', can be estimated in three ways:

* Thin-section analysis of pore throats;<ref name=ch10r20>Dullien, F., A., L., Dhawan, G., K., 1974, Characterization of pore structure by a combination of quantitative photomicrography and mercury porosimetry: Journal of Colloid and Interface Science, vol. 47, no. 2, p. 337–349., 10., 1016/0021-9797(74)90265-3</ref> Etris et al., 1988; ;<ref name=ch10r53>Macdonald, I., F., Kaufmann, P., Dullien, F., A., L., 1986, Quantitative image analysis of finite porous media 2: Specific genus of cubic lattice models and Berea sandstone: J. Microscopy, vol. 144, p. 297–316., 10., 1111/jmi., 1986., 144., issue-3</ref> see also <ref name=ch10r88>Wardlaw, N., C., 1990, Quantitative determination of pore structure and application to fluid displacement in reservoir rocks, in Kleppe, J., Berg, E., W., Buller, A., T., Hjemeland, O., Torsaeter, O., eds., North Sea Oil and Gas Reservoirs: London, Graham & Trotman, p. 229–243.</ref>

* Thin-section analysis of pore throats<ref name=ch10r20>Dullien, F., A., L., Dhawan, G., K., 1974, Characterization of pore structure by a combination of quantitative photomicrography and mercury porosimetry: Journal of Colloid and Interface Science, vol. 47, no. 2, p. 337–349., 10., 1016/0021-9797(74)90265-3</ref>Etris et al., 1988<ref name=ch10r53>Macdonald, I., F., Kaufmann, P., Dullien, F., A., L., 1986, Quantitative image analysis of finite porous media 2: Specific genus of cubic lattice models and Berea sandstone: J. Microscopy, vol. 144, p. 297–316., 10., 1111/jmi., 1986., 144., issue-3</ref><ref name=ch10r88>Wardlaw, N., C., 1990, Quantitative determination of pore structure and application to fluid displacement in reservoir rocks, in Kleppe, J., Berg, E., W., Buller, A., T., Hjemeland, O., Torsaeter, O., eds., North Sea Oil and Gas Reservoirs: London, Graham & Trotman, p. 229–243.</ref>

* Thin-section analysis of grain size and assumptions of spherical grains and rhombohedral packing<ref name=ch10r5>Berg, R., R., 1975, [[Capillary pressure]] in [[stratigraphic trap]]s: AAPG Bulletin, vol. 59, no. 6, p. 939–956.</ref>

* Thin-section analysis of grain size and assumptions of spherical grains and rhombohedral packing<ref name=ch10r5>Berg, R., R., 1975, [http://archives.datapages.com/data/bulletns/1974-76/data/pg/0059/0006/0900/0939.htm Capillary pressure in stratigraphic traps]: AAPG Bulletin, vol. 59, no. 6, p. 939–956.</ref>

* Empirical correlation of [[permeability]], [[porosity]], and pore throat radius (Wardlaw and <ref name=ch10r89>Wardlaw, N., C., Taylor, R., P., 1976, Mercury [[capillary pressure]] curves and the interpretation of pore structure and capillary behavior in reservoir rocks: Canadian Petroleum Geology Bulletin, vol. 24, no. 2, p. 225–262.</ref><ref name=ch10r94>Wells, J., D., Amafuele, J., O., 1985, Capillary pressure and permeability relationships in tight gas sands: SPE/DOE paper 13879.</ref><ref name=ch10r88 /><ref name=ch10r63>Pittman, E., D., 1992, Relationship of porosity and permeability to various parameters derived from mercury injection-capillary pressure curves for sandstone: AAPG Bulletin, vol. 76, no. 2, p. 191–198.</ref>

* Empirical correlation of [[permeability]], [[porosity]], and pore throat radius (Wardlaw and <ref name=ch10r89>Wardlaw, N., C., Taylor, R., P., 1976, Mercury [[capillary pressure]] curves and the interpretation of pore structure and capillary behavior in reservoir rocks: Canadian Petroleum Geology Bulletin, vol. 24, no. 2, p. 225–262.</ref><ref name=ch10r94>Wells, J., D., Amafuele, J., O., 1985, Capillary pressure and permeability relationships in tight gas sands: SPE/DOE paper 13879.</ref><ref name=ch10r88 /><ref name=ch10r63>Pittman, E., D., 1992, Relationship of porosity and permeability to various parameters derived from mercury injection-capillary pressure curves for sandstone: AAPG Bulletin, vol. 76, no. 2, p. 191–198.</ref>