Changes

==Pore types==

==Pore types==

[[file:porosity_fig2.png|thumb|{{figure number|2}}Idealized sandstone porosity system showing four basic pore types: intergranular, microporosity, dissolution, and fracture. (After Pittman.<ref name=pt05r127 />)]]

[[file:porosity_fig2.png|thumb|300px|{{figure number|2}}Idealized sandstone porosity system showing four basic pore types: intergranular, microporosity, dissolution, and fracture. (After Pittman.<ref name=pt05r127 />)]]

Basic clastic and carbonate pore types can be identified by integrating data from [[core description]]s, thin section petrography, scanning electron microscopy, and [[capillary pressure]] tests. These analyses indicate that significant differences exist between clastic and carbonate pore types.

Basic clastic and carbonate pore types can be identified by integrating data from [[core description]]s, thin section petrography, scanning electron microscopy, and [[capillary pressure]] tests. These analyses indicate that significant differences exist between clastic and carbonate pore types.

[[file:porosity_fig3.png|thumb|{{figure number|3}}Idealized carbonate porosity system showing three basic porosity groups: fabric selective, not fabric selective, and fabric selective or not. (After Choquette and Pray.<ref name=pt05r34 />)]]

[[file:porosity_fig3.png|thumb|300px|{{figure number|3}}Idealized carbonate porosity system showing three basic porosity groups: fabric selective, not fabric selective, and fabric selective or not. (After Choquette and Pray.<ref name=pt05r34 />)]]

===Sandstone pore systems===

===Sandstone pore systems===