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an investment undertaken by a consortium,
usually with one member acting
as operator
Making up a joint
the act of screwing individual sections of
pipe together to form a longer length
Calcium petroleum sulphanates
an important range of aliphatic sulphur
compounds in the form of calcium salts,
used in a wide variety of industrial and
manufacturing processes, eg as detergents,
wetting agents and rust-inhibitors
Salt pillow
a mass of salt that has risen up under
overlying formations, causing them to
bulge upwards, but which has not actually
broken through
Salt gel
see attapulgite
Salt dome
a dome of salt that has broken through
overlying formations
Salt column
a column of salt which has broken
through overlying formations
Sonar
a technique whereby underwater objects
are located by bouncing sound waves off
them and detecting the reflected signals,
also used to measure pipe wall thickness
Copolymer
a polymer manufactured from two or
more different monomers (see butadiene-
styrene copolymer)
Butadiene-styrene copolymer
a polymer manufactured from butadiene
and styrene, an important raw material in
the plastics and rubber industries
Escape capsule
a small completely enclosed vessel used
as a lifeboat for offshore structures
Special Tax
a tax levied by the Norwegian Government
on net income from petroleum
activities in the Norwegian sector after
deducting all costs, Royalties and certain
other allowances This tax is not
deductible in computing other Norwegian
income taxes
Specialty chemical
a chemical made in a relatively small
quantity for a particular application
Alloy
a composition of two or more metals
Snubbing
the procedure of running pipe or casing
into the well while the well is exerting
pressure on the surface equipment
Round trip
the process which occurs every time a
drill bit has to be replaced, whereby the
entire drill string is removed from the hole
in roughly 90-foot sections and is then
returned with a new bit on the end, also
described as making a trip
Making a trip
see round trip
Satellite link
a communication system whereby a signal
is passed between two points via an
Earth satellite
Stabilizer
a tower designed to separate the high
vapor pressure hydrocarbons from crude
oil, so that a good recovery of crude is
realized and evaporation losses in storage
are minimized
Development phase
the phase in which a proven oil or gas
field is brought into production wells
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