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Crude Oil Equivalent – Equivalent van ruwe olie
Converting coal, oil or gas volumes to the crude oil equivalent is customarily
done on the basis of the heating content or calorific value of the fuel. Industry gas
conversion factors usually range between 1.0 barrel of oil equivalent (boe) = 180
to 200 standard m 3 gas. Coal ore quality is too different to provide such a range.
Developed Reserves – Ontwikkelde reserves
Developed reserves are expected to be recovered from existing wells including
reserves behind pipe. Improved recovery reserves are considered developed
only after the necessary equipment has been installed, or when the costs to do
so are relatively minor. Developed reserves may be sub-categorized as
producing or non-producing.
Discovered - Blootgelegd
The term applied to a coal, oil or gas resource whose existence has been
determined by its actual penetration by a well or shaft, which has also clearly
demonstrated the existence of moveable fuel carrier or at least some recovery of
a sample of the carrier. Log and/or core data may suffice for proof of existence
of fuel if an analogous reservoir is available for comparison.
Discovered Fuel-initially-in-place – Oorspronkelijk aanwezige brandstof
That quantity of coal, oil or gas which is estimated, on a given date, to be
contained in known accumulations, plus those quantities already produced
therefrom. Discovered Fuel-initially-in-place may be subdivided into Commercial
and Sub-commercial categories, with the estimated potentially recoverable portion
being classified as Reserves and Contingent Resources respectively.
Downhole - Boorgat
A term used to describe tools, equipment, and instruments used in the wellbore
or the shaft or conditions or techniques applying to those.
Downstream – Het finale deel van het productie- en marktproces
When referring to the oil and gas industry, this term indicates the refining and
marketing sectors of the industry. More generically, the term can be used to refer
to any step further along in the process than the exploration and production.
E&P - Exploratie en productie
Exploration and production. The "upstream" sector of the coil, oil and gas
industry.
Enhanced recovery (ER) – Verhoogde winning
Refers to a variety of processes to increase the amount of coal, oil or gas
removed from a reservoir, e.g. by injecting a liquid (e.g., water, surfactant) or gas
(e.g., nitrogen, carbon dioxide).
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