今年上半年,三大石油公司利润集体下滑,主要原因是当期国际、国内经济形势低迷,需求不振。同时,自身的战略调整和生产成本的上升也是导致石油公司利润下滑的因素。截至8月27日,三大石油公司年中业绩报告全部出炉:2012年上半年三大石油公司的净利润集体下降。其中,中国石油保持最好业绩,净利润较去年 In the first half of this year, the profits of the three major oil companies collectively declined, mainly due to the current sluggish international and domestic economic conditions and sluggish demand. At the same time, its own strategic adjustment and rising production costs are also factors that have contributed to the declining profits of oil companies. As of August 27, all three oil companies’ annual results report was released: the net profit of the three major oil companies in the first half of 2012 collectively declined. Among them, PetroChina maintained its best performance with net profit as compared with last year