Increased diameter of a body and sealed threads provide increasing of an accident free operational life of a core barrel.
New design of a core lifter hgr let to change the one high-wear part of the hgr in 10-15 min. - overhang bearing.
Corer chuck is made acc. to special technology, which provides lack of terminal tensions in the chuck material and creates high roughness of brazing by its equal thickness along the inner diameter.
The instrument is supplied according to customer's agreement: - Aright core lifter for recovery of isolated core; - Joint of bowl draw-off that provides preliminary flushing of core lifter by drilling with bottom motor; - Crossover sub that let to select fluid flow rate through core bit apart from the rate, necesarry for bottom-hole motor operation; - Core bit, inner side of which together with drive shoe of a corer creates labyrinth sealing, protecting core from flushing; - Straight bladed or spiral centrilizer that increase core recovery in fractional formations; - Plastic insert that increases core recovery in loose rocks and keeps core safe during transportation.
