is a partner and head of the Subsoil Use Department (Almaty) of GRATA International. He has extensive expertise in advising international clients on issues related to oil and gas, mining, M&A, and EPC contracts, among others. Prior to joining GRATA International in November 2010, Yerbolat gained experience as a legal counsel in the largest cellular communications operating company in Kazakhstan (2001–06) and in a petroleum company (2006–10). He has undertaken and supervised work for a number of oil and gas, mining and services companies – including the Korean National Oil Corporation (KNOC), Rio Tinto, the North Caspian Operating Company (the operator of Kashagan, the world's largest oil discovery of the last 40 years), Polymetal, NordGold, Sinopec, Baker Hughes, Eurochem, Repsol, Pertamina, ENRC, CGNPC, Mubadala, MOL, JBIC, Tethys, MIE Holding and Severstal – and with regard to companies such as Karachaganak Petroleum Operating B.V. (one of the world's largest gas condensate fields), Maersk and Maten Petroleum.
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