On 4 January 2018 Total completed the drilling operations in the Rubin 1 exploration well in the 1-21 Han Asparuh permit. According to industry sources, logging operations were conducted probably in the Upper Miocene as well as in the Lower Oligocene where oil and gas shows occurred. The well bottomed in thick carbonates at a total depth of 7,030 m below sea level (5,500 m below sea floor). On 23 September 2017 the âNoble Globetrotter IIâ drillship spudded Rubin 1 in a water depth of 1,530 m about 14 km northeast of the Polshkov 1 exploration well. It had a planned total depth of 5,500 m (below sea floor) with several targets but its main objective was the Polshkov High structure.   In May 2016 Total spudded exploration well Polshkov 1 in the permit. The well was targeting Lower Oligocene sandstones, Middle Eocene sandstones and Upper Jurassic to Lower Cretaceous carbonates. In August 2016 the well reached a total of 5,615 m (below sea floor) and in September 2016 it was plugged and abandoned as a discovery. Partner Repsol reported the well encountered oil and gas in an Oligocene play. The permit is adjacent from the south to OMV Petromâs and ExxonMobilâs XIX Neptun East permit in the Romanian waters where a significant deepwater gas discovery was made in 2012 with Domino 1. The area is little explored with water depth ranging from 150 m to 2,000 m. In October 2013 OMV, operator at that time, with partners concluded a 3,000 km 2D seismic survey and in January 2014 the group completed a 7,740 sq km 3D on the permit. Â   Interest in the 14,220 sq km 1-21 Han Asparuh permit is held by Total E & P Bulgaria BV (40% + operator), OMV offshore Bulgaria GmbH (30%, operator until May 2014) and Repsol SA (30%). The required work program includes 10,000 km of 2D seismic, 5,000 sq km of 3D seismic and two deep wells.
Total completed the drilling operations in the Rubin 1 exploration well in the 1-21 Han Asparuh permit. According to industry sources, logging operations were conducted probably in the Upper Miocene as well as in the Lower Oligocene where oil and gas shows occurred. The well bottomed in thick carbonates at a total depth of 7,030 m below sea level (5,500 m below sea floor). 