Ob'neftegazgeologiya OAO (ONGG OAO or Obneftegasgeologia OJSC or ONGG OJSC) is a Russia-based company, which is engaged in the oil and gas industry. The Company was created as a result of the reorganization of governmental entity, geologicheskoe predpriyatie po razvedke nefti i gaza Ob'neftegazgeologiya. The Company's main activities are oil distribution, geological survey, exploration and development of oilfields on the territory of Tyumen and Tomsk regions. Ob'neftegazgeologiya OAO operates through one wholly owned subsidiary, Obgeologiya OOO. As of May 4, 2012, the Company's major shareholder was NGK Slavneft? OAO with a stake of 79.66%.
OB'NEFTEGAZGEOLOGIYA OAO 
