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a distillation or absorption tower which is
filled with small objects, called packing,
to effect an intimate contact between rising
vapors
X-ray
an electromagnetic radiation with
wavelenghts between that of ultraviolet
radiation and gamma radiation X-ray
equipment is often used to check the
quality of welds in pipelines, vessels and
platform structures
Retort
a vessel used in the distillation process
Redux
the distillate which is pumped back into
the top of the distillation tower to control
temperature and increase efficiency
Risk capital
equity capital raised to finance a development
that has technical, economic and
other risks attached to it and thus cannot
guarantee a return on the investment
Voyage charter
the shipowner hires his vessel, subject to
various conditions, for the carriage of
cargo for a single voyage
Plateau level
the level of peak production reached by
an oil or gas field, it is always followed by
declining levels of production
Rotameter
instrument used for measuring the flow
rate of a liquid or gas in a pipe
Rotary table
see drilling table
Self-sufficiency
the situation that arises when oil companies
operating within a given nation's
boundaries produce enough oil or gas to
meet the nation's domestic needs
Jack-up rig
mobile offshore drilling platform with
retractable legs on which the platform
rests on the sea bed when in use
Accumulator tank
a vessel for the temporary storage of a
gas or liquid, usually used to ensure
continuous operation
Receiver
any vessel or container which receives
materials or process liquors from another
piece of equipment
Piling foundation
steel piles driven into the sea bed to
anchor fixed steel structures such as production
and drilling platforms
Strata
successive layers of sediments or sedimentary
rock, singular stratum
Bond
a chemical bond is the link by which
atoms are joined together in a molecule
Fault
a fracture in the Earth's crust along which
the rocks on one side are displaced relative
to those on the other
Seismic survey
a technique for determining the detailed
structure of the rocks underlying a particular
area by passing acoustic shock
waves into the strata and detecting and
measuring the reflected signals
Shot
a small explosion used to produce shock
waves during a seismic survey
Geophones
the detectors used in seismic surveys to
pick up sound waves reflected from
sub-surface strata
Jug hustler
a member of a seismic crew who operates
the geophones
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