30 April 2021 0:32 GMT Updated 30 April 2021 0:32 GMT Japan's Mitsui has boosted its onshore exploration portfolio in Western Australia's Perth basin where it is developing the large Waitsia gas field. Mitsui's subsidiary AWE agreed to acquire Norwest Energy’s 27.945% operator interest in Block EP413 for A$100,000 conditional upon completion, said Norwest. Sign up for our new energy transition newsletter Gain valuable insight into the global oil and gas industry's energy transition from Accelerate, the new weekly newsletter from Upstream and AWE will also pay for all costs and ass...