an Entity references as follows:
The Pivdenno-Holitsynske gas field natural gas field located on the continental shelf of the Black Sea. It was discovered in 1981 and developed by Chornomornaftogaz. It started commercial production in 1982. The total proven reserves of the Pivdenno-Holitsynske gas field are around 124 billion cubic feet (3.5×109 m3), and production is slated to be around 20 million cubic feet per day (570×103 m3/d) in 2015.