Archives: Glossary Terms

A formation is a fundamental unit in petroleum geology, referring to a laterally continuous, mappable body of rock that possesses distinctive physical and chemical characteristics,…

Gas Saturation (often denoted as Sg) is a fundamental petrophysical property that quantifies the fraction of the pore volume within a reservoir rock that is…

Oil saturation (commonly denoted as So) is a fundamental petrophysical property that quantifies the fraction of pore space within a reservoir rock that is occupied…

Water Saturation (Sw) is a fundamental petrophysical property that quantifies the fraction of pore space in a reservoir rock that is filled with formation water.…

Pay Zone (also called productive interval or hydrocarbon-bearing zone) refers to a distinct layer or section of subsurface rock within a reservoir that contains sufficient…

A horizon in petroleum geology and exploration refers to a distinct, mappable boundary or surface that separates different rock layers or stratigraphic units. It is…

A fault is a planar fracture or discontinuity in a volume of rock, across which there has been significant displacement as a result of rock-mass…

An anticline is a type of geological fold that arches upward, with the oldest rock layers at its core and younger layers draped over the…

A stratigraphic trap is a type of hydrocarbon accumulation where the primary trapping mechanism results from changes in rock stratigraphy, such as variations in porosity,…

A structural trap is a type of geological formation that can contain accumulations of oil and natural gas. It is created by the deformation of…

A Prospect is a specific geographic area or geological feature that has been identified through exploration activities as having the potential to contain a commercially…

A play in petroleum exploration and geology is a conceptual framework that groups together a set of geologically related prospects, fields, or leads sharing a…