Oilfield Terms Starting with "G"

The Gamma Ray Log is a fundamental well logging measurement used in Exploration & Geology to record the natural radioactivity of subsurface rock formations. It…

Gas Cap Drive is a primary reservoir drive mechanism in which the natural expansion of a pre-existing gas cap (a zone of free gas overlying…

A Gas Dehydration Unit (GDU) is a critical piece of process equipment used in the oil and gas industry to remove water vapor from natural…

Gas injection is a secondary and tertiary oil recovery technique used in reservoir management to maintain reservoir pressure, improve oil displacement, and increase the overall…

Gas Lift is an artificial lift method used in oil and gas production to increase the flow of reservoir fluids (oil, water, and gas) from…

A Gas Lift System is an artificial lift method used in oil and gas wells to enhance the natural flow of reservoir fluids to the…

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…

The Gas-Oil Ratio (GOR) is a fundamental production and reservoir engineering parameter defined as the volume of natural gas produced per unit volume of crude…

A gathering system is the network of pipelines, valves, separators, meters, and other equipment that collects raw hydrocarbons (oil, natural gas, and produced water) from…

A gel in the context of oil and gas stimulation and intervention is a semi-solid, viscous fluid system engineered to temporarily increase the viscosity of…

Geophysics is the branch of Earth science that applies the principles of physics to study the physical properties and processes of the subsurface. In the…

Geostatistics is a branch of applied statistics that focuses on the analysis, modeling, and prediction of spatially correlated data. In the oil and gas industry,…