Lifting Dog Tired? Pointy Issue Resolved with New Overshot

BOART LONGYEAR’S NEW OVERSHOT RESOLVING POINTY ISSUES Since Boart Longyear introduced the Q™ Wireline system in 1966, retrieving the inner tube from the core barrel has been handled the same way: an overshot with lifting dogs (spring loaded hooked “fingers”) is lowered or pumped into the hole until it snaps over a pivoting spearhead mechanism […]