Archives: Glossary Terms

Water Cut (often abbreviated as WC or %WC) is a fundamental production metric in the oil and gas industry that quantifies the volume fraction of…

A horizontal well is a wellbore drilled vertically to a target depth, then gradually turned to follow a horizontal trajectory within the reservoir rock. The…

Infill drilling is a reservoir management technique that involves drilling additional wells (infill wells) between existing producing wells in a developed oil or gas field.…

Recovery Factor (RF) is a key performance metric in reservoir engineering, defined as the fraction or percentage of the original oil in place (OOIP) that…

Oil in Place (OIP) is the total volume of crude oil that is estimated to be contained within a natural underground reservoir before any production…

Reservoir Heterogeneity is a fundamental concept in petroleum engineering and reservoir management that describes the spatial variability in rock properties and fluid distributions within a…

Hydraulic fracturing, commonly known as fracking, is a well stimulation technique used to enhance the flow of hydrocarbons from low-permeability reservoir rocks. It is a…

Net Pay refers to the portion of a hydrocarbon-bearing reservoir that contains sufficient oil or gas in economically viable quantities to justify production. It is…

Permeability is a fundamental rock property that quantifies a reservoir’s ability to transmit fluids (oil, gas, or water) through its pore network. It directly governs…

Porosity is a fundamental rock property that measures the void spaces within a reservoir rock, expressed as a percentage of the total rock volume. These…

The Formation Volume Factor (FVF) is a critical property in reservoir engineering that describes the change in volume that a reservoir fluid undergoes when it…

Irreducible Water Saturation (Swirr) represents the minimum volume fraction of water that remains trapped within a reservoir rock’s pore system and cannot be displaced by…