05.07.2009
A microscopic single-celled algae with a silica-rich cell wall. Diatoms can be so abundant that they can form thick layers of sediment from the organisms that died and sank to the bottom of the sea and have become an important component of deep-sea deposits since cretaceous time
Intrusion of fluid rock (e.g., molten rock, salt, or mud) caused by the difference in buoyancy and pressure between it and the overlying rock
Cars often use a diaphragm pump to move gasoline from the gas tank to the carburetor or fuel injection plugs
Is made by setting man-made diamonds in the tip or the cutting surface of the bit. Diamonds are many times harder than the hardest steel, so diamond bit makes it possible to have longer runs before a round trip is necessary to change the bits.
Porosity developed in a sediment after its initial deposition as a result of chemical and biological changes and burial. A form of secondary porosity as opposed to primary porosity. Fracture porosity is not thought of as diagenetic porosity
The pressure at which a liquid phase condenses from a vaporous fluid in equilibrium at a given temperature
The pressure at which the first condensate liquid comes out of solution in a gas condensate. Many gas condensate reservoirs are saturated at initial conditions, meaning that the dewpoint is equal to the initial reservoir pressure