Overshooting an old 20″ steel casing, with a 21″ overshot. The old casing was not in the right place for the new elevator; it was about 18″ off center and 50′ deep. To fix the issue, we completed an elevator jack hole modification or relocation.
Often we can install a new jack hole in elevators with an existing cylinder in ground, so in most cases we do not need to remove the old steel casing and/or cylinder. Keeping the old steel casing and/or cylinder will help expedite the completion of your new elevator installation. Then it’s all left up to your elevator vendor as to what action to take or not!
“Specialized Drilling Operation”