05.07.2009
A broad class of hydrocarbon deposits of a type (such as gas in tight sandstones, gas shales and coal-bed gas) that historically have not been produced using traditional development methods
A term used when referring to sediment that has not been lithified into a rock.
A sand formation in which individual grains do not adhere to one another. If an unconsolidated sandstone produces oil or gas, it will produce sand as well if not controlled or corrected.
Contact between two rock units of significantly different ages. An unconformity is a gap in the time record for that location. If reservoir beds beneath an unconformity are tilted, and impermeable beds above the unconformity form a seal, then a trapping geometry results. An unconformity trap is a type of hydrocarbon trap whose closing is controlled by the presence of an unconformity.
Disaggregating electric utility service into its basic components and offering each component separately for sale with separate rates for each component. For example, generation, transmission and distribution could be unbundled and offered as discrete services
Functional unbundling is the separation of component parts of a previously unified product or service usually provided by a single party into distinct products or services each provided by different parties. In an unbundled market, consumers in the energy sector no longer have to buy transmission service, marketing and storage from the same supplier. A vertically integrated utility that has to undergo unbundling is often required to choose one component service in which it will specialize and restructure or divest itself of all parts of its business related to services in which it will not participate
Un-booked reserves / resources are defined by many O&G companies as the best estimate of recoverable hydrocarbons where commercial and/or technical maturity are such that project sanction is not expected within the next three years.
Un-booked resources, which changed its name by SEC in 2009 to discovered resources, are defined as the best estimate of recoverable hydrocarbons where commercial and/or technical maturity are such that project sanction is not expected within the next three years