1. Global economy is on the edge of recession, especially Euro and Jap, accompany with dimmy growth in EM that US economy can not push up the world wide growth.
2. Strong USD, culprit of weak Yen and Euro, which WTI and Brend are quoted.
3. Shale gas technolgy.
4. low oil production cost, such as US 8/barrel in Saudi Arabia, US 60/barrel in Russia, which countries are not intended to cut production in the near term.
6. New energy and air protection are on the way.
That are all the factors in my mind.
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