Glossary: Perforations

Top Reservoir	The upper producing zone within a formation for formations that contains hydrocarbons.
Base Reservoir	The bottom producing zone within a formation or formations that contains hydrocarbons.
Shots	The total number of perforations or holes pierced through the casing or liner.
Shot Density (per ft)	The number of perforations used in combination with perforations per unit (for example 8.5 shots per meter with 17 shots every 2 meters).
Completion Status	A code identifying the status type of a completion, such as open, closed, squeeze, plugged or indeterminate.
Completion Status Type	The group or type of status such as construction, financial, legal, etc.
Type	A code identifying the type of perforation method, for example bullet, jet or combination.
Method	A code identifying the type of opening the fluid entered through into the tubing (for example perforation, open hole, or combination).

Angle	For directional perforating this is the angle of perforations expressed in degrees relative to north.
Phase	The angle separating perforations (for example 120 or 180)
Diameter	The size or diameter of the perforations.
Perforation Count	The number of perforations used in combination with perforations per unit (for example 8.5 shots per meter with 17 shots every 2 meters).
Charge Type	A code to represent the type of charge used in the perforation.
Charge Size	The size of the charge used in the perforation.