Line Pack or linepack

Line Pack or linepack

Definition(s)

Line Pack or linepack

  1. volume of fluid in the pipe at flowing pressure and temperature; 2) increased volume of a fluid within a given pipe due to increased pressure.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Leak Detection

Leak Detection

Definition(s)

Leak Detection

Examining and reporting any anomalies in the line or vessel hydraulics. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Law of Conservation of Energy

Law of Conservation of Energy

Definition(s)

Law of Conservation of Energy

Prohibits creation or destruction of energy. Work changes energy from one form to another (heat to mechanical).. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Laminar Flow

Laminar Flow

Definition(s)

Laminar Flow

Fluid flow where fluid layers at the center of the line or vessel move faster than the layers next to the pipe wall. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Kinematic Viscometer

Kinematic Viscometer

Definition(s)

Kinematic Viscometer

A device that measures efflux times in determining kinematic viscosity. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Kill

Kill

Definition(s)

Kill

Action taken to kill well and prevent or correct blowout. Includes circulation of heavy weight fluid downhole, circulating kick out, and closing of blowout preventers. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Kelvin

Kelvin

Definition(s)

Kelvin

Metric absolute temperature unit (degrees Celsius + 273.16).. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Jetting the Well in

Jetting the Well in

Definition(s)

Jetting the Well in

Circulating a lower – density fluid to allow the well to go underbalance, either to drill in underbalance mode or to induce production from the formation. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Interlocks

Interlocks

Definition(s)

Interlocks

Software or hardware that allows or prevents motors from starting, or valves from opening or closing. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Inertia

Inertia

Definition(s)

Inertia

Force that keeps a stationary body from moving and a moving body from changing speed or direction.. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Induction Motor

Induction Motor

Definition(s)

Induction Motor

Motor that uses current induced into the rotor by electromagnetic fields in the stator. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Incompressible Fluids

Incompressible Fluids

Definition(s)

Incompressible Fluids

Fluids having very little change in volume as pressure is significantly increased or decreased.. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Inside BOP

Inside BOP

Definition(s)

Inside BOP

Installed in a drill string to prevent a blowout inside the string. Inside BOPs are essentially a check valve preventing flow up the drill string while allowing flow down the drill string. Also called Internal Blowout Preventer, and IBOP. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Hydraulics

Hydraulics

Definition(s)

Hydraulics

Set of laws governing the behavior of fluids at rest and in motion. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Hydraulic Gradient (grade line)

Hydraulic Gradient (grade line)

Definition(s)

Hydraulic Gradient (grade line)

Graphical representation of the change in pressure or head with respect to distance along the line or vessel.. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Hydrates

Hydrates

Definition(s)

Hydrates

Solids (ice) that form when water vapor in gas cools; can be a high temperature based on the amount of CO2 and H2S. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Hunting

Hunting

Definition(s)

Hunting

Constant movement of a control system around the set point. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
HSE MPD

HSE MPD

Definition(s)

HSE MPD

The adoption of MPD tools or processes for health, safety, or environmental considerations. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Horsepower

Horsepower

Definition(s)

Horsepower

Unit of work that represents the amount of work required to raise a one-pound weight 33,000 feet in one minute. Source: IADC UBO / MPD Glossary, December 2011. Global Standards
High Vapor Pressure

High Vapor Pressure

Definition(s)

High Vapor Pressure (HVP)

Liquid hydrocarbons with vapor pressure above 50 psi (340 kPa) absolute at 100ºF (38°C).. Source: IADC UBO / MPD Glossary, December 2011. Global Standards