“We are interested to come back to Iran when the sanctions are lifted and if the contracts are interesting,” Stephane Michel, Total’s head of exploration and production in the Middle East said at the conference. “We have worked in this country for a long time, so we know specific fields on which we’ve worked.”

India's production will tail off due to limited resources and relatively high costs for new projects, leading to more imports as economic growth picks up speed.

Nowadays the proven shale gas reserves across the globe were estimated at about five trillion cubic meters, which was less than three per cent of the world's aggregate proven gas reserves.

Oil, natural gas and coal producers are risking $2.2 trillion by investing in projects for which there will be no demand if the world meets a United Nations target of limiting the rise in temperature to less than 2 degrees Celsius, a non-profit think tank said.

"Russia has made huge investments in exploration, refining, and transportation of gas and holds a great share of supplying security. The country plans to increase its output to 855 billion cubic meters per year by 2035," Putin said.

“We know that energy demand is growing. We also know that renewable energy will have to meet most–if not all–of this increased demand. Oil and gas will remain critically important energy resources," Mr. Sætre said on Monday. "Even in a 2 degree world we need oil and gas roughly at today’s levels in 2040."

“We have never seen this in the last 30 years, two consecutive years of investment decline,” the IEA’s executive director, Dr. Fatih Birol, told The Wall Street Journal on the sidelines of a Statoil conference. “This will have implications for the oil markets, if not tomorrow then the day after tomorrow.”

Speaking at an energy conference in Bahrain on Thursday, Ali al-Naimi, said oil companies “need to increase investments in order to guarantee stability of market for the long and short term”.

Australia is significantly adding to global liquefied natural gas (LNG) supply capacity. Two new facilities started LNG exports within the last 12 months, and 5 more projects are under construction, scheduled to come online by 2018. With this growth, Australia is expected to overtake Qatar and Malaysia to become the world's largest LNG exporter, with 11.4 billion cubic feet per day (Bcf/d) of liquefaction capacity by 2019.

"In 2016, geopolitical challenges will not go away. We have to keep pushing for diversification of energy sources," Sefcovic said, reiterating that the Commission would scrutinize whether the Nord Stream plan complied with EU rules.

Устойчивой тенденции растущего или убывающего ценового тренда сейчас не наблюдается. Россия не рассматривает возможность снижения добычи для стабилизации нефтяного рынка и ожидает его балансировки под воздействием фундаментальных факторов. Важная тенденция газового рынка – уменьшение ценового арбитража между рынками Европы, АТР и Северной Америки.

Александр Новак сообщил, что в 2015 году в нефтяной отрасли ожидается 1 трлн 188 млрд рублей инвестиций при уровне добычи в 533 млн тонн. Также, по словам Министра, на нефтяном рынке идет сокращение дисбаланса спроса и предложения - излишек предложения будет ликвидирован во второй половине 2016 года.

Credit crunch was expected to hit many independent U.S. oil producers, starving the industry of billions of dollars and further denting company budgets and drilling plans.

The U.K. government will make keeping the lights on the top priority with natural gas and nuclear power playing a central role in that goal, Energy and Climate Change Secretary Amber Rudd is expected to say in a major speech later Wednesday setting out a new energy policy for the country.

Gazprom would need to bring spot gas prices below $4 per million British thermal units (mmBtu), versus around $5.65 per mmBtu now, to shut Europe off to U.S. imports - a level Goldman Sachs expects could be reached by 2018/2019.