This happened during the visit of Belarusian President Alexander Lukashenko to his Kazakh counterpart Kassym-Zhomart Tokaev.
Chairman of the Belneftekhim concern Andrei Rybakov said the parties agreed on oil supplies and are starting commercial negotiations.
Earlier, the Deputy Minister of Energy of Kazakhstan, Aset Magauov, said that the Kazakh side intends to sign an agreement with Belarus on the supply of oil and oil products by the end of 2019.