4,231
edits
Changes
Jump to navigation
Jump to search
Line 43:
Line 43: − + Line 69:
Line 69: − +
→Carbonate pore systems
===Carbonate pore systems===
===Carbonate pore systems===
In comparison to clastic pore systems, pore types in carbonate rocks are more varied (see [[Carbonate reservoir models: facies, diagenesis, and flow characterization]]). Three basic pore groups can be recognized:<ref name=pt05r34>Choquette, P. W., Pray, L. C., 1970, [http://archives.datapages.com/data/bulletns/1968-70/data/pg/0054/0002/0200/0207.htm Geological nomenclature and classification of porosity in sedimentary carbonates]: AAPG Bulletin, v. 54, p. 207–250.</ref> fabric selective, not fabric selective, and fabric selective or not (Table 1 and [[:file:porosity_fig3.png|Figure 3]]). Seven porosity types (interparticle, intraparticle, intercrystal, moldic, fenestral, fracture, and vugs) are common and volumetrically important.
In comparison to clastic pore systems, pore types in carbonate rocks are more varied (see [[Carbonate reservoir models: facies, diagenesis, and flow characterization]]). Three basic pore groups can be recognized:<ref name=pt05r34>Choquette, P. W., Pray, L. C., 1970, [http://archives.datapages.com/data/bulletns/1968-70/data/pg/0054/0002/0200/0207.htm Geological nomenclature and classification of porosity in sedimentary carbonates]: AAPG Bulletin, v. 54, p. 207–250.</ref> fabric selective, not fabric selective, and fabric selective or not (Table 1 and [[:file:porosity_fig3.png|Figure 3]]). Seven porosity types (interparticle, intraparticle, intercrystal, moldic, fenestral, [[fracture]], and vugs) are common and volumetrically important.
{| class = "wikitable"
{| class = "wikitable"
| colspan = 2 align=middle | ''' Not fabric selective '''
| colspan = 2 align=middle | ''' Not fabric selective '''
|-
|-
| Fracture || Porosity formed by fracturing
| [[Fracture]] || Porosity formed by fracturing
|-
|-
| Channel || Markedly elongate pores
| Channel || Markedly elongate pores