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Oil shale geology is a branch of geologic sciences which studies the formation and composition of ... The age of the known oil shale deposits ranges from Cambrian to ...
The Williston Basin is a large intracratonic sedimentary basin in eastern Montana, western North Dakota, South Dakota, southern Saskatchewan, and south-western Manitoba that is known for its rich deposits of petroleum and potash. The basin is a geologic structural basin but not a topographic depression; it is transected by the Missouri River ...
Significant discoveries included the Embrar oil field (1942), the TXL oil field (1944), the Dollarhide oil field (1945), and the Block 31 oil field (1945). [ 35 ] : 200–201, 230–231 [ 36 ] In 1966, the production of the Permian Basin measured 600 million barrels of oil, along with 2.3 trillion cubic ft of gas, which totaled $2 billion.
A 2016 estimate of global deposits set the total world resources of oil shale equivalent of 6.05 trillion barrels (962 billion cubic metres) of oil in place. [6] Oil shale has gained attention as a potential abundant source of oil. [7] [8] However, the various attempts to develop oil shale deposits have had limited success. Only Estonia and ...
Petroleum geology is the study of the origins, occurrence, movement, accumulation, and exploration of hydrocarbon fuels. It refers to the specific set of geological disciplines that are applied to the search for hydrocarbons ( oil exploration ).
Oil production peaked in 1908 at 34 million barrels per year, and declined steadily to 5 million barrels in 1933. A new wave of exploration brought oil production to a new high of 140 million barrels in 1940, after which production again declined. [8] Waterflooding of old reservoirs caused a third peak of oil production in the 1950s.
In common usage, deposits rich in oil are known as oil fields, and deposits rich in natural gas are called natural gas fields. In general, organic sediments buried in depths of 1,000 m to 6,000 m (at temperatures of 60 ° C to 150 °C) generate oil, while sediments buried deeper and at higher temperatures generate natural gas.
Salt deposition in the Gulf of Mexico is poorly dated; the Louann Salt has no index fossils and the age is based on the ages of formations below and above. [9] Salt deposition began in the Jurassic after the first rotation of the Yucatan Block. The thick halite was later split into two main sections as the seafloor spread, with some continued ...