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GLOSSARY
Wellhead: That portion of an oil well above the surface of the
ground.
Wettability: The relative degree to which a fluid will spread on
(or coat) a solid surface in the presence of other immiscible
fluids.
Wettability number: A measure of the degree to which a reservoir
rock is water-wet or oil-wet, based on capillary pressure curves.
Wettability reversal: The reversal of the preferred fluid wettability
of a rock, e.g., from water-wet to oil-wet, or vice versa.
Wheeling: The process of transferring electrical energy between
buyer and seller by way of an intermediate utility or utilities.
Whole-tree harvesting: A harvesting method in which the whole
tree (above the stump) is removed.
Working interest: An interest in an oil and gas lease that gives the
owner of the interest the right to drill for and produce oil and
gas on the leased acreage and requires the owner to pay a share
of the costs of drilling and production operations; the share
of production to which a working interest owner is entitled
will always be smaller than the share of costs that the working interest owner is required to bear, with the balance of the
production accruing to the owners of royalties; thus, the owner
of a 100% working interest in a lease burdened by a landowner's
royalty of 12.5% would be required to pay 100% of the costs of
a well but would be entitled to retain 87.5% of the production.
Workover: Operations on a producing well to restore or increase
production.
Y
Yarding: The initial movement of logs from the point of felling to
a central loading area or landing.
Z
Zeolite: a crystalline aluminosilicate used as a catalyst and having
a particular chemical and physical structure.
GLOSSARY
Wellhead: That portion of an oil well above the surface of the
ground.
Wettability: The relative degree to which a fluid will spread on
(or coat) a solid surface in the presence of other immiscible
fluids.
Wettability number: A measure of the degree to which a reservoir
rock is water-wet or oil-wet, based on capillary pressure curves.
Wettability reversal: The reversal of the preferred fluid wettability
of a rock, e.g., from water-wet to oil-wet, or vice versa.
Wheeling: The process of transferring electrical energy between
buyer and seller by way of an intermediate utility or utilities.
Whole-tree harvesting: A harvesting method in which the whole
tree (above the stump) is removed.
Working interest: An interest in an oil and gas lease that gives the
owner of the interest the right to drill for and produce oil and
gas on the leased acreage and requires the owner to pay a share
of the costs of drilling and production operations; the share
of production to which a working interest owner is entitled
will always be smaller than the share of costs that the working interest owner is required to bear, with the balance of the
production accruing to the owners of royalties; thus, the owner
of a 100% working interest in a lease burdened by a landowner's
royalty of 12.5% would be required to pay 100% of the costs of
a well but would be entitled to retain 87.5% of the production.
Workover: Operations on a producing well to restore or increase
production.
Y
Yarding: The initial movement of logs from the point of felling to
a central loading area or landing.
Z
Zeolite: a crystalline aluminosilicate used as a catalyst and having
a particular chemical and physical structure.