The average price of LNG shipments into the country was about $6.32 per million British thermal units in April, the least since August 2005, according to Bloomberg calculations based on preliminary data from the Ministry of Finance. Prices are expected to rebound in coming months as crude values have surged, according to Junzo Tamamizu, managing partner at Clavis Energy Partners LLC.

Japan is aiming to become an international LNG trading hub by the early 2020s, opening access to receiving terminals and beefing up large-scale storage facilities.

China and Japan dispute sovereignty over a group of uninhabited East China Sea islets, while in the South China Sea, Beijing is building islands on reefs to bolster its claims.

The first export is a significant milestone for the Gorgon project, which has been hit by delays and a jump in costs since construction started, as it begins generating revenue for Chevron and its partners.

Exploiting its proximity to northern Asia and the collapse of the rouble against the U.S. dollar, Russia has become the fastest growing oil supplier to Asia at a time when Middle East exporters are distracted by internal strife and competition from U.S. shale producers.

Total imports of liquefied natural gas (LNG) by Japan, South Korea, and China, the three largest global LNG importers, all located in North Asia, declined by an average of 1.0 billion cubic feet per day (Bcf/d) (5%) in 2015.

Possible Japanese investment in Iran could include petroleum, natural gas resource developments, refinery upgrades, petrochemical plants and distribution systems, according to industry sources.

“The efficiency of Japanese investments (alternative to those in Russia) is mostly very low. From what we know in the last 3 yeast Japanese firms faced almost 600 bln yen of write downs (around 6 bln USD) because of bad investments in projects associated with hard-to-recover hydrocarbons in US and Canada, and also because of unsuccessful projects in the North Sea. And this had to be done in a period of high oil prices! De-facto IRR for international upstream projects of INPEX by the end of 2014 was 3.1% (Wood Macikenzie estimates). This is around 4 times less than a standard revenue ratio”.

Sakhalin II is one of the most successful export projects targeting the Asian-Pacific region. The key to success lies in integration: it is managed and operated by Sakhalin Energy Company and its shareholders: Gazprom (50% and 1 share), Shell (27.5% minus 1 share), Mitsui (12.5%), Mitsubishi (10%).

Imports by Iran's four biggest buyers - China, India, Japan and South Korea - totaled 1.17 million barrels per day (bpd) last month, up more than 13 percent from a year earlier, government and tanker-tracking data showed.