Due to the market-to-market difference of commodities, limitation in report scope and data availability, this project focuses on the fundamental analysis approaches for the prices of a major kind of energy derivative: the crude oil futures.
An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt) from which groundwater can be extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology. Related terms include aquitard, which is a bed of low permeability along an aquifer, and aquiclude (or aquifuge), which is a solid, impermeable area underlying or overlying an aquifer. If the impermeable area overlies the aquifer, pressure could cause it to become a confined aquifer.
Confined aquifer: An aquifer that lies between two relatively impermeable rock layers. Confining bed or unit: A body of impermeable or distinctly less permeable material stratigraphically adjacent to one or more aquifers ...~ An aquifer that is bounded above and below by low permeability formations or aquitard s.onfined aquifer. Confined Aquifer. An aquifer in which ground water is confined under pressure which is significantly greater than atmospheric pressure. Source: Terms of the Environment ... Confined aquifer: Aquifers that are wedged between layers of relatively impermeable materials and are consequently under pressure.