DRILLING APPARATUS AND METHOD FOR RELEASING DRILLING RODS STUCK IN SURROUNDING GROUND

• Main Author: Toffolo, Gilberto
• Format: Patent
• Language: English
• Published: 29.04.2021
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

A drilling apparatus and a method for releasing rods stuck in surrounding ground are described, that use a torsional device for releasing the drilling assembly and induce centrifugal forced vibrations and bending vibrations in the drilling rods, facilitating the release from positions stuck inside t...