Archives: Glossary Terms

PVT Analysis stands for Pressure-Volume-Temperature Analysis, a fundamental laboratory and computational study used in reservoir management to characterize the physical and thermodynamic behavior of reservoir…

Core analysis is the laboratory-based examination of cylindrical rock samples, known as cores, obtained from subsurface hydrocarbon reservoirs. This fundamental process provides direct measurements of…

Pressure Transient Analysis (PTA) is a powerful, quantitative interpretation technique used in reservoir engineering to evaluate well and reservoir properties by analyzing the pressure response…

Well testing is a fundamental and dynamic activity in reservoir management and improved oil recovery (IOR) that involves measuring the flow rate, pressure, and fluid…

A Christmas Tree is an assembly of valves, spools, chokes, and fittings installed on top of a wellhead to control the flow of oil, gas,…

Reservoir Surveillance is the continuous, systematic process of collecting, analyzing, and interpreting data from an oil or gas reservoir to monitor its performance, optimize production,…

Gravity drainage is a reservoir drive mechanism in which the force of gravity causes oil to move downward through the reservoir rock towards production wells.…

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…

Aquifer support is a natural reservoir drive mechanism where an adjacent or underlying water-bearing formation (aquifer) expands and provides pressure maintenance to a hydrocarbon reservoir…

Reservoir Drive Mechanisms refer to the natural energy sources within a petroleum reservoir that displace oil and gas from the pore spaces toward the wellbore.…

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…

Production Logging (PL) is a suite of downhole diagnostic techniques used to evaluate the dynamic behavior of a well during production or injection. By running…