PVC plastic, ABS plastic, and aluminum have all been used as inner core barrel liners. The liner slips inside a steel inner core barrel, reducing the effective inner diameter of the core barrel by approximately 0.5 in. The liner simplifies [[core handling]], especially for friable or unconsolidated core, and serves as a core preservation system. Liners are less expensive than disposable inner core barrels. However, besides reducing the diameter of the core, they restrict the length of the core to [[length::30 ft]]. | PVC plastic, ABS plastic, and aluminum have all been used as inner core barrel liners. The liner slips inside a steel inner core barrel, reducing the effective inner diameter of the core barrel by approximately 0.5 in. The liner simplifies [[core handling]], especially for friable or unconsolidated core, and serves as a core preservation system. Liners are less expensive than disposable inner core barrels. However, besides reducing the diameter of the core, they restrict the length of the core to [[length::30 ft]]. |