... Barrel are widely used for wireline core drilling Wireline Q series Core Barrel Wireline drilling is the special method ... length core barrels are avaiable. Wireline series Core Barrel available:Q series Core Barresls: AQ, BQ, NQ, HQ, PQ, ... NQ3, HQ3T series Core Barrels: T2-56, T2-66, T2-76,T2-86, T2-101, T6-131WF ... upon receipt of your detailed requirements. Wireline Q series Core Barrel