The non-contextual content of a WITSML Perforated Interval object. The starting measured depth of the interval. The ending measured depth of the interval. The starting true vertical depth of the interval. The ending true vertical depth of the interval. The date and time associated with this interval The type of mechanism used to create the perforations. The number of shots. The shot density. The diameter of each shot. xxxxxxxxxxxxxxxxxx The angle of each shot. xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx The size of the guns. The type of guns. The size of charges. The type of charges. Name of formation penetrated. Name of formation, regionally dependent. A textual remark about the interval. An enumeration of the types of mechanisms used to create a perforation. xxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxx