Press Release: Zion Oil & Gas Encounters Oil –  Company Drills Deeper in Response – DALLAS and CAESAREA, Israel, February 13, 2018 – Zion Oil & Gas, Inc.(NASDAQ: ZN) announces that during the current open hole wireline logging and subsequent reaming (cleaning the well bore) operations, Zion encountered free-flowing hydrocarbons while circulating drilling mud. Zion Oil & Gas, Inc. Press Release