含气面积（gas-bearing area）是石油与天然气地质学应用术语。
地层中气水界面位置 ，对圈定气藏的含气面积 ，确定气藏厚度 ，计算储量极为重要。
Site of gas and water interface in reservoir plays an important way to locate area bearing gas, determine depth of it and calculate reserves.
中国60余个大中型气田天然气地质储量、含气面积和成藏时期的统计结果表明，中国大中型气田的聚集效率差别很大。
Statistics of gas in place, gas-bearing area and reservoiring period of over 60 large and medium gas fields in China show that their accumulation efficiencies vary greatly.
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