The former Amoco Oil company drilled a awfully deep hole (some say more than 17,000 feet), looking for oil in SE Iowa back in the 1970s. They found a few seeps but nothing of value until a neighbing farmer moved an outhouse over the hole...
"The former Amoco Oil company drilled a awfully deep hole (some say more than 17,000 feet), looking for oil in SE Iowa back in the 1970s. They found a few seeps but nothing of value until a neighbing farmer moved an outhouse over the hole..."
Hope the farmer didn't try to hold his breath until he heard the kerplunk!
Phillips Petroleum drilled to 25,000+ feet in the Permian Basin in the 1960's. The well was a duster.