Oilfield Terms Starting with "I"

Incident Investigation is a systematic, objective, and structured process used to examine workplace incidents—including accidents, injuries, near misses, spills, fires, explosions, or equipment failures—to identify…

Immiscible Flooding is a secondary or tertiary oil recovery method in which a fluid (typically water or a hydrocarbon gas) is injected into a reservoir…

Improved Oil Recovery (IOR) encompasses a broad set of reservoir management techniques and technologies applied after primary production to increase the amount of oil that…

In-Situ Combustion (ISC), also known as fireflooding, is a thermal enhanced oil recovery (EOR) method that generates heat within the reservoir by igniting a portion…

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.…

Inflation Adjustment is a financial and project management mechanism used to account for changes in the general price level of goods and services over time.…

An injection well is a well drilled and completed specifically to introduce fluids or gases into subsurface geological formations for purposes related to oil and…

Integrity Management (IM) is a systematic, risk-based, and lifecycle-oriented framework used in the oil and gas industry to ensure that physical assets—such as pipelines, pressure…

Intelligent Completion (IC) refers to a digitally integrated well completion system that incorporates downhole sensors, remotely operated flow control valves, and surface data acquisition networks…

The Internal Rate of Return (IRR) is a core financial metric used in capital budgeting and project economics within the oil and gas industry. It…

The Internet of Things (IoT) refers to a network of interconnected physical devices—ranging from simple sensors to complex machinery—that are embedded with electronics, software, and…

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…