For a detailed diagram of a Petroleum
drilling rig, See: List of components of
oil drilling rigs
Drilling rig preparing rock blasting
A drilling rig is a machine which creates
holes (usually called boreholes) and/or shafts
in the ground. Drilling rigs can be massive
structures housing equipment used to drill
water wells, oil wells, or natural gas extrac-
tion wells or they can be small enough to be
moved manually by one person. They sample
sub-surface mineral deposits, test rock, soil
and groundwater physical properties, and
also can be used to install sub-surface fabric-
ations, such as underground utilities, instru-
mentation, tunnels or wells. Drilling rigs can
be mobile equipment mounted on trucks,
tracks or trailers, or more permanent land or
marine-based structures (such as oil plat-
forms, commonly called ’offshore oil rigs’
even if they don’t contain a drilling rig). The
term "rig" therefore generally refers to the
complex of equipment that is used to penet-
rate the surface of the earth’s crust.
Drilling rigs can be:
Drilling Rig, Reverse circulation in Western
• Small and portable, such as those used in
mineral exploration drilling, water wells
and environmental investigations.
• Huge, capable of drilling through
thousands of meters of the Earth’s crust.
Large "mud pumps" circulate drilling mud
(slurry) through the drill bit and up the
casing annulus, for cooling and removing
the "cuttings" while a well is drilled.
Hoists in the rig can lift hundreds of tons
of pipe. Other equipment can force acid or
sand into reservoirs to facilitate extraction
of the oil or natural gas; and in remote
locations there can be permanent living
accommodation and catering for crews
(which may be more than a hundred).
Marine rigs may operate many hundreds
of miles or kilometres distant from the
supply base with infrequent crew rotation.
From Wikipedia, the free encyclopedia
Petroleum drilling rig. Capable of drilling
thousands of feet
Modern Oil Driller La Pam