1) Big oil source 2) Flowing oil well 3) Giant jackpot 4) New oil well 5) Oil field strike 6) Oil well 7) Oiler 8) Outpouring of Texas tea 9) Productive oil well 10) Spewing oil well 11) Spurting oil well Found on https://www.crosswordclues.com/clue/gusher
an oilwell that has come in with such great pressure that the oil jets out of the well like a geyser. In reality, a gusher is a blowout and is extremely wasteful of reservoir fluids and drive energy. In the early days of the oil industry, gushers were common and many times were the only indication that a large reservoir of oil and gas had been struck. See blowout. ... Found on http://www.encyclo.co.uk/visitor-contributions.php