松辽盆地含CO2天然气成藏机制与分布规律 Accumulation mechanisms and distribution patterns of CO2-containing natural gas reservoirs in the Songliao Basin Song liao pen di han CO2 tian ran qi cheng zang ji zhi yu fen bu gui lü Accumulation mechanisms and distribution patterns of CO2-containing natural gas reservoirs in the Songliao Basin柳少波 柳少波等著2016PDF138 MBZH