attr_gen Generic_Name Generic_Name A curve name, as might appear in a dictionary of 'required' or 'essential' curves for an oil company well log database. attr_obj Object Object a class of object. For well log curves, typical objects are the tool acquiring the log and the formation adjacent to it, whose respective classes are Tool ('TOOL') and Formation ('FM'). attr_tech Technique Technique a method of acquiring, deriving, or computing the value of a property. For well log curves, typical techniques are Acoustic ('AC') and Neutron ('NEU'). attr_pty Property Property a specific aspect, characteristic, attribute, or relation used to describe an object. Typically the property implies the quantity type and units class of the value. Typical properties are 'Resistivity', 'Diameter', 'Temperature', ... attr_mod_a Modifier A Modifier a qualifier which modifies the meaning of Object or Property, for example Deep ('DEP'), Average ('AVE'). attr_mod_b Modifier B Modifier a qualifier which modifies the meaning of Object, Property, or Modifier A. attr_func Function Function a derivation of a Property; typically the the quantity type and units are different than that implied by Property, for example Quality Indicator ('QUAL').