Gun perforator

a device fitted with a vertical series of

explosive charges that is lowered down a

well on a wire line to perforate the formation,

also known as a perforating gun

Surge

a sudden change in flow, liquid level,

temperature or pressure, etc in a

pipeline or vessel

Slick

see oil slick

Roughneck

one of the assistants to a driller, a laborer

who works on the actual derrick floor of

an offshore rig or platform

Floorman

a member of the drilling crew whose work

station is on the derrick floor

Tropospheric scatter radio network

a communications technique involving

the scatter of shortwave radio waves from

the lower part of the atmosphere

Sparger

a sprinking device, usually applied to

devices for distributing gases or air

in Gun perforator liquids

Wildcat appraisal well

an appraisal well drilled with minimum

preliminary information about the underlying

structure and conditions, it usually

follows a wildcat well which reported

shows of oil or gas

Wildcat

an exploration well drilled without knowledge

of the contents of the underlying

rock structure

Exploration drilling

drilling carried out to determine whether

hydrocarbons are present in a particular

area or structure

Manifold

piping arrangement which allows one

stream of liquid or gas to be divided into

two or more streams

Breakout

the process whereby one section of drill

pipe is unscrewed from another, sometimes

also used to refer to promotions

within the drilling team

Dilute

to reduce the strength of concentration of

a solution by the addition of another liquid

Spillage

an accidental release of Gun perforator oil, or

another liquid

Decomposition

the breaking up of a chemical compound

to form two or more simpler molecules

Roustabout

a general laborer in an oil drilling and/or

production operation

Deterioration

any undesirable chemical or

physical change

Atomization

conversion of a liquid into a mist, or spray

Mud

see drilling mud

Soluble

capable of being dissolved, usually in

water, unless another solvent is specified

Cash flow profile

a chart showing expenditure on a project

and income from the project over a period

of time

Reaction

any process involving chemical change

by which new chemical products

are formed

Solution gas drive

a primary recovery process in which oil is

driven out of a reservoir by the natural

pressure exerted by the dissolved gas

Standby boat

a boa≫ (often a converted Gun perforator fishing boat)

which maintains permanent station near

an offshore structure in order to provide

support facilities in an emergency

Pit

an unroofed sump or tank for holding liquids

such as drilling mud

Mud pit

large steel storage pits through which the

drilling mud is circulated

Dogleg

an abrupt change in the direction of a

well bore


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