05.07.2009
Refers to properties that differ based on the direction that is measured. Contrasts with isotropic
A relatively common sedimentary mineral that forms massive rock layers. Anhydrite does not form directly, but is the result of the dewatering of the rock forming mineral Gypsum. This loss of water produces a reduction in volume of the rock layer and can cause the formation of caverns as the rock shrinks
A surface that separates younger strata from eroded, dipping, older strata and represents a gap in the geologic record
Services that ensure reliability and support the transmission of electricity from generation sites to customer loads. Such services may include: load regulation, spinning reserve, non-spinning reserve, replacement reserve, and voltage support.
These vessels are mostly to tow and anchor up oil rigs. They are supplied with winches for towing and anchor handling and have an open stern to allow the decking of anchors. An anchor-handling supply vessel is a combined supply and anchor-handling ship that carry supplies to platforms and drilling rigs
The concept of the “anchor user” is taken from the gas pipeline industry. Such as a gas consumer that consumes sufficient quantities of gas to represent a required entry threshold to justify the high infrastructure investment required by a new gas supplier to enter the market place. In Israel, IEC has been the only anchor consumer for natural gas producers. The FERC has recently adopted the concept to the electricity sector to promote investment in new electricity transmission lines in the US, by allowing developers to allocate half the line’s capacity to representatives of “anchor users” for 25 years, before running any open season or auction that opens up capacity to others. The concept is intended to provide early commitments that facilitate financing of the investment. > >