Â   On 21 March 2018, Rosneft reported that the company and its partner ENI completed drilling of wildcat Mariya 1 in the Chernomorskiy Zapadnyyy license in Black Sea. The well reached 5,265 m and penetrated fractured carbonate reservoir with a total thickness of 300 m. It is not clear if any hydrocarbons have been found or the well was abandoned without testing.  Mariya 1, spudded on 19 December 2017, was operated by drilling contractor Saipem SpA which moved the Scarabeo 9 semi-submersible on the well location in mid-December. The Mariya prospect in water depth of 2,125 m has been chosen for the first well with a PTD of 6,125 m. Based on current daily rates for this type of rigs (around USD 300,000), the drilling cost is about USD 15 million. The total cost of the well is estimated at above USD 50 million.  The Chernomorskiy Zapadnyy license covers 8,662 sq km some 100 km from the coast and encompasses several prospects. Licensed to Rosneft, the block is operated by Shatskmorneftegaz where Eni has a 33% stake. Pre-drilled resources of the Mariya prospect were estimated at 562 MMbbl of oil. Carbonate reservoirs of the Upper Jurassic section are the main exploratory target. Preparing for the drilling, Rosneft and ENI recorded 4,000 km of 2D seismic data and 3,000 sq km of 3D data.
Russia, not found