Well casing perforator and apparatus

A multi-directional drill-type device that can be shuttled vertically through well casings of various diameters to add new perforations at the desired spacing and positions along the casings to optimize well performance is disclosed. The apparatus is especially suited to add perforations to well casings of existing vertical LFG extraction wells. The apparatus includes a motor in a housing that may be purged with inert gas and with an output shaft that rotates around a first axis. The motor output shaft drives plural drill assembly modules that have drill bits that rotate around an axis normal to the first axis and which reciprocate into and out of the apparatus.