On 29 May 2018 the Ministry of Energy reported it is planning a tender for the 1-22 Tervel offshore block. The 1-22 Tervel block will cover the area of the former 1-22 Teres block and is situated between the 1-21 Han Asparuh (Total) and the 1-14 Han Kubrat (Shell) blocks, adjoining the Turkish maritime boundary. The block â which was never drilled - encompasses 4,032 sq km in a water depth ranging between 1,800 m and 2,500 m.     The exploration period is five years from the date of the contract signature plus two two-year extensions, according to Art. 31 of the amended Underground Resources Act.    A first bid round for the 1-22 Teres block opened in December 2012 and closed in May 2013 with no bids received. According to industry sources, interest at the time was shown by Format Energy (US), Lukoil, OMV, RWE-Dea, Shell and TPAO.    A second tender for the 1-22 Teres block was launched in April 2015 and closed in September 2015 also with no bids received. At that time Anadarko had reported its interest to participate in the tender for both the 1-22 Teres and 1-14 Silistar (1-14 Han Kubrat) blocks. ExxonMobil and Statoil were also considering their participation. Industry sources reported in June 2015 that BP was talking to the Bulgarian authorities about its possible interest in the acreage on offer.
On 29 May 2018 the Ministry of Energy reported it is planning a tender for the 1-22 Tervel offshore block. The 1-22 Tervel block will cover the area of the former 1-22 Teres block and is situated between the 1-21 Han Asparuh (Total) and the 1-14 Han Kubrat (Shell) blocks, adjoining the Turkish maritime boundary. 