Thangavel (21) and his friend Venkatesan (40), workers of silver ornaments, were returning to Andipatti on their motorcyle last night after worshipping at a temple, they said.
The duo, in a drunken state, lost their way due to darkness and fell into the open well along with their vehicle.
Thangavel who was riding the two wheeler drowned while Venkatesan managed to remain afloat and shouted for help but to no avail, police said.