GLOSSARY
303
Primary oil recovery: Oil recovery utilising only naturally occurring forces; recovery of crude oil from the reservoir using the
inherent reservoir energy.
Primary wood-using mill: A mill that converts round wood products into other wood products; common examples are sawmills
that convert saw logs into lumber and pulp mills that convert
pulpwood round wood into wood pulp.
Process heat: Heat used in an industrial process rather than for
space heating or other housekeeping purposes.
Producer gas: Fuel gas high in carbon monoxide (CO) and hydrogen (H2), produced by burning a solid fuel with insufficient air
or by passing a mixture of air and steam through a burning bed
of solid fuel.
Proved developed reserves: Reserves that can be expected to be
recovered through existing wells with existing equipment
and operating methods. Additional oil and gas expected to
be obtained through the application of fluid injection or other
improved recovery techniques for supplementing the natural
forces and mechanisms of primary recovery can be included as
"proved developed reserves" only after testing by a pilot project, or after the operation of an installed program has confirmed
through production response that increased recovery will be
achieved.
Proved reserves: The estimated quantities of crude oil, natural
gas, and natural gas liquids which geological and engineering
data demonstrate with reasonable certainty to be recoverable
in future years from known reservoirs under existing economic
and operating conditions, i.e., prices and costs as of the date
the estimate is made; prices include consideration of changes in
existing prices provided only by contractual arrangements, but
not on escalations based upon future conditions.
Proved undeveloped reserves: Reserves that are expected to be
recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for
recompletion; reserves on undrilled acreage are usually limited
to those drilling units offsetting productive units that are reasonably certain of production when drilled; proved reserves for
other undrilled units can be claimed only where it can be demonstrated with certainty that there is continuity of production
from the existing productive formation; under no circumstances
303
Primary oil recovery: Oil recovery utilising only naturally occurring forces; recovery of crude oil from the reservoir using the
inherent reservoir energy.
Primary wood-using mill: A mill that converts round wood products into other wood products; common examples are sawmills
that convert saw logs into lumber and pulp mills that convert
pulpwood round wood into wood pulp.
Process heat: Heat used in an industrial process rather than for
space heating or other housekeeping purposes.
Producer gas: Fuel gas high in carbon monoxide (CO) and hydrogen (H2), produced by burning a solid fuel with insufficient air
or by passing a mixture of air and steam through a burning bed
of solid fuel.
Proved developed reserves: Reserves that can be expected to be
recovered through existing wells with existing equipment
and operating methods. Additional oil and gas expected to
be obtained through the application of fluid injection or other
improved recovery techniques for supplementing the natural
forces and mechanisms of primary recovery can be included as
"proved developed reserves" only after testing by a pilot project, or after the operation of an installed program has confirmed
through production response that increased recovery will be
achieved.
Proved reserves: The estimated quantities of crude oil, natural
gas, and natural gas liquids which geological and engineering
data demonstrate with reasonable certainty to be recoverable
in future years from known reservoirs under existing economic
and operating conditions, i.e., prices and costs as of the date
the estimate is made; prices include consideration of changes in
existing prices provided only by contractual arrangements, but
not on escalations based upon future conditions.
Proved undeveloped reserves: Reserves that are expected to be
recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for
recompletion; reserves on undrilled acreage are usually limited
to those drilling units offsetting productive units that are reasonably certain of production when drilled; proved reserves for
other undrilled units can be claimed only where it can be demonstrated with certainty that there is continuity of production
from the existing productive formation; under no circumstances