Changes

On this type of reservoir, it was formed by the accumulation of  lacustrine sediments. Very fine grain sediment rocks.

On this type of reservoir, it was formed by the accumulation of  lacustrine sediments. Very fine grain sediment rocks.

[[File:Diagrammatic cross sections of depositional units within deltas.jpg|500px|thumbnail|center|{{figure number|5|}}Diagrammatic cross sections of depositional units within deltas. (A) Delta Concept of Gilbert (1885) showing topset, foreset, and bottomset beds; (B) Deltaic and neritic facies from Frazier (1967); (C) Sediment types and depositional units of an idealized delta.<ref>Berg, R.R., 1985, Reservoir Sandstones, Prentice Hall College Div.</ref>]]

[[File:Diagrammatic cross sections of depositional units within deltas.jpg|500px|thumbnail|center|{{figure number|5|}}Diagrammatic cross sections of depositional units within deltas. (A) Delta Concept of Gilbert<ref>Gilbert, G. K., 1885, The topographic features of lake shores: U.S. Geological Survey Annual Report 5, p. 75– 123.</ref> showing topset, foreset, and bottomset beds; (B) Deltaic and neritic facies from Frazier<ref>Frazier, D. E., 1967, Recent deltaic deposits of the Mississippi River; their development and chronology: Gulf Coast Association of Geological Societies Transactions, v.17, p. 287-315</ref>; (C) Sediment types and depositional units of an idealized delta.<ref>Berg, R. R., 1985, Reservoir Sandstones: Prentice Hall College Div.</ref>]]

===Carbonate Reservoir===

===Carbonate Reservoir===