长北气田的商业生产开始于2007年3月，每年为北京和中国东部城市供应30亿立方米的天然气。
Commercial production in Changbei began in March 2007, supplying three billion cubic meters of gas a year to Beijing and other cities in eastern China.
中石油是中国石油的子公司。壳牌与中石油已经在运营位于中国陕西省的长北致密气田。
Shell and PetroChina, a subsidiary of CNPC, already operate a gas field in the Changbei tight gas field in China's Shaanxi province.
中石油是中国石油的子公司。壳牌与中石油已经在运营位于中国陕西省的长北致密气田。
Shell and PetroChina, a subsidiary of CNPC, already operate a gas field in the Changbei tight gas field in China's Shaanxi province.
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