Mitsui E&P Middle East, an oil and gas exploration and production company, has received advice from Dentons regarding the sale of its 5% working interest in Block 9 and its 20% working interest in Blocks 3 and 4, both of which are onshore in the Sultanate of Oman, to Kistos Energy Middle East Limited, a wholly-owned subsidiary of Kistos plc, for US$148 million.