petroleum  search
NTnatural gas
UFoil and gas
 oil (petroleum)
RThydrocarbons
 cap rocks
 bitumens
 Darcy's law
 aromatization
 energy sources
 fluidization
 benzene
 migration
 kerogen
 blowouts
 drilling
 geopressure
 inventory
 clathrates
 degasification
 diwa-type deposits
 condensates
 heavy oil
 depletion
 crude oil
 giant fields
 nat
SNScope of petroleum in GeoRef indexing is generally restricted to economic studies of oil and gas before recovery. Also search petroleum-gas; petroleum-natural gas. As of 1993, use hydrocarbons, crude oil, oil spills, or petroleum products for pollution st
petroleum accumulation  search
UFaccumulation, petroleum
RTpetroleum
 migration
 stratigraphic wedges
 stratigraphic traps
 structural traps
 traps
SNAdded to Thesaurus in 1982.
Petroleum County Montana  search
BTUnited States
 .Montana
 ..Petroleum County Montana
petroleum economics  search
SNNot a valid term for GeoRef. Use economics and petroleum.
petroleum engineering  search
UFengineering, petroleum
RTabandoned oil wells
 fluid injection
 engineering geology
 acidification
 Archie's law
 formation evaluation
 blowouts
 drilling
 borehole breakouts
 drilling muds
 Formation MicroScanner
 formation damage
 drill stem tests
 enhanced recovery
 gas injection
 gas storage
SNUsed for petroleum and natural gas.
petroleum exploration  search
RTbasin analysis
 bottom-simulating reflectors
 Exclusive Economic Zone
 exploration
 hydrocarbon indicators
 migration
 natural gas
 oil and gas fields
 petroleum
 source rocks
 stratigraphic traps
 stratigraphic wedges
 structural traps
 subsalt strata
SNA valid GeoRef index term through 1970. Reintroduced as a valid term in 1993. From 1971-1992, also search petroleum AND exploration. Includes natural gas. Added to Thesaurus in 1993.
petroleum geology  search
SNNot a valid GeoRef index term after 1970. See petroleum; petroleum engineering.
petroleum maps  search
BTmaps
 .petroleum maps
UFfuel resources maps
RTpetroleum
 natural gas
 economic geology maps
SNUsed for maps indicating location of natural gas and oil. Before 1982, also search maps AND petroleum. Added to Thesaurus in 1989.
petroleum products  search
NTgasoline
RThydrocarbons
 leaking underground storage tanks
 light nonaqueous phase liquids
 methanol
 natural gas
 organic compounds
 petroleum
 pollutants
 pollution
 pyrene
 soil vapor extraction
 soil venting
 underground storage tanks
 water treatment
SNUsed for the processed product often for pollution studies. Also search [hydrocarbons or gasoline or petroleum] with [pollution or water quality] as applicable. Added to Thesaurus in 1995.
petroleum reserves  search
SNNot a valid term for GeoRef. See petroleum; reserves.
petroleum resources  search
SNNot a valid term for GeoRef. See petroleum; resources.
petroleum seepage  search
USEoil seeps