296 GLOSSARY
Herbaceous: Non-woody type of vegetation, usually lacking permanent strong stems, such as grasses, cereals and canola (rape).
Heteroatom compounds: Chemical compounds that contain nitrogen and/or oxygen and/or sulfur and /or metals bound within
their molecular structure(s).
Horizontal drilling: A drilling technique that permits the operator to contact and intersect a larger portion of the producing
horizon than conventional vertical drilling techniques and can
result in both increased production rates and greater ultimate
recoveries of hydrocarbons.
Hydrocarbonaceous material: A material such as bitumen that
is composed of carbon and hydrogen with other elements
(heteroelements), such as nitrogen, oxygen, sulfur, and metals
chemically combined within the structures of the constituents;
even though carbon and hydrogen may be the predominant
elements, there may be very few true hydrocarbons.
Hydrocarbon compounds: Chemical compounds containing only
carbon and hydrogen.
Hydrodesulf urization: The removal of sulfur by hydrotreating (q.v.).
Hydroprocesses: Refinery processes designed to add hydrogen to
various products of refining.
Hydrotreating: The removal of heteroatomic (nitrogen, oxygen,
and sulfur) species by treatment of a feedstock or product at
relatively low temperatures in the presence of hydrogen.
I
Idle cropland: Land in which no crops were planted; acreage
diverted from crops to soil-conserving uses (if not eligible for
and used as cropland pasture) under federal farm programs is
included in this component.
Incinerator: Any device used to burn solid or liquid residues or
wastes as a method of disposal.
Inclined grate: A type of furnace in which fuel enters at the top
part of a grate in a continuous ribbon, passes over the upper
drying section where moisture is removed, and descends into
the lower burning section. Ash is removed at the lower part of
the grate.
Incremental ultimate recovery: The difference between the quantity
of oil that can be recovered by EOR methods and the quantity
of oil that can be recovered by conventional recovery methods.
Herbaceous: Non-woody type of vegetation, usually lacking permanent strong stems, such as grasses, cereals and canola (rape).
Heteroatom compounds: Chemical compounds that contain nitrogen and/or oxygen and/or sulfur and /or metals bound within
their molecular structure(s).
Horizontal drilling: A drilling technique that permits the operator to contact and intersect a larger portion of the producing
horizon than conventional vertical drilling techniques and can
result in both increased production rates and greater ultimate
recoveries of hydrocarbons.
Hydrocarbonaceous material: A material such as bitumen that
is composed of carbon and hydrogen with other elements
(heteroelements), such as nitrogen, oxygen, sulfur, and metals
chemically combined within the structures of the constituents;
even though carbon and hydrogen may be the predominant
elements, there may be very few true hydrocarbons.
Hydrocarbon compounds: Chemical compounds containing only
carbon and hydrogen.
Hydrodesulf urization: The removal of sulfur by hydrotreating (q.v.).
Hydroprocesses: Refinery processes designed to add hydrogen to
various products of refining.
Hydrotreating: The removal of heteroatomic (nitrogen, oxygen,
and sulfur) species by treatment of a feedstock or product at
relatively low temperatures in the presence of hydrogen.
I
Idle cropland: Land in which no crops were planted; acreage
diverted from crops to soil-conserving uses (if not eligible for
and used as cropland pasture) under federal farm programs is
included in this component.
Incinerator: Any device used to burn solid or liquid residues or
wastes as a method of disposal.
Inclined grate: A type of furnace in which fuel enters at the top
part of a grate in a continuous ribbon, passes over the upper
drying section where moisture is removed, and descends into
the lower burning section. Ash is removed at the lower part of
the grate.
Incremental ultimate recovery: The difference between the quantity
of oil that can be recovered by EOR methods and the quantity
of oil that can be recovered by conventional recovery methods.