In December 2017, Gazprom Neft Khantos completed testing of a new exploratory well in the Zimniy Zapadnyy license in Khanty-Mansiyskiy Autonomous Okrug (Western Siberia). Zimnyaya Zapadnaya 1, spudded in late March 2017, reached 3,050 m in late July. Oil flows were tested from the Cherkashinskaya Formation (Neocomian), which is the main play in the southern part of the Ural-Frolov Basin. Reservoir AS12 perforated at 2,570-2,595 m flowed with oil at a rate of 23 b/d. The interval 2,507-2,541 m (AS11) tested oil at a rate of 52 b/d. Reservoir AS9 perforated at 2,263-2,308 m flowed with oil at a rate of 332 b/d through a 6 mm choke. Based on primary data, 2P reserves of the discovery were estimated by IHS Markit at 12 MMbbl. Zimniy Zapadnyy license (KhMN03069NR) covers 1,240 sq km in the southern part of the Ural-Frolov Basin and encompasses several prospects. Â 
Russia (West Siberian B.) Zimnyaya Zapadnaya 1 op. by GAZPROM (100.0%) in Zimniy Zap. block, Reservoir AS12 perforated at 2,570-2,595 m flowed with oil at a rate of 23 b/d. The interval 2,507-2,541 m (AS11) tested oil at a rate of 52 b/d. Reservoir AS9 perforated at 2,263-2,308 m flowed with oil at a rate of 332 b/d through a 6 mm choke. Based on primary data, 2P reserves of the discovery were estimated by IHS Markit at 12 MMbbl. 