gas reservoir pressure
51Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
52Second law of thermodynamics — The second law of thermodynamics is an expression of the universal law of increasing entropy, stating that the entropy of an isolated system which is not in equilibrium will tend to increase over time, approaching a maximum value at… …
53Underbalanced drilling — Underbalanced drilling, or UBD, is a procedure used to drill oil and gas wells where the pressure in the wellbore is kept lower than the fluid pressure in the formation being drilled. As the well is being drilled, formation fluid flows into the… …
54Oil gusher — An oil gusher (or just gusher ; also sometimes called a wild well ) is an uncapped oil well connected to a reservoir of petroleum oil that is under high pressure. The oil can shoot 200 feet (60 m) or higher into the air.… …
55Dos Cuadras Offshore Oil Field — The four oil platforms drilling into the Dos Cuadras Field, as seen from Summerland, California. They are, in order from left to right: Platforms Hillhouse, A , B , and C . The Dos Cuadras Offshore Oil Field is a large oil and gas field… …
56Oil sands — The Athabasca oil sands in Alberta, Canada, are a very large source of bitumen, which can be upgraded to synthetic crude oil. Bituminous sands, colloquially known as oil sands or tar sands, are a type of unconventional petroleum deposit. The… …
57Neutron generator — Neutron generators are neutron source devices which contain compact linear accelerators and that produce neutrons by fusing isotopes of hydrogen together. The fusion reactions take place in these devices by accelerating either deuterium, tritium …
58Eastern Trough Area Project — Coordinates: 57°24′54″N 2°15′22″E / 57.415°N 2.256°E / 57.415; 2.256 The Eastern Trough Area Project, commonly …
59Marcellus Formation — Stratigraphic range: Middle Devonian …
60earthquake — /errth kwayk /, n. 1. a series of vibrations induced in the earth s crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. 2. something that is severely disruptive; upheaval. [1300 50; ME erthequake …
