中国天然气田CO2储存容量初步评估

地下储存可有效地减少人类生产活动排放到大气中的CO2量，从而缓解日趋严重的全球气候变暖问题。天然气地下储存工程为CO2的气田储存积累了大量的经验，而且天然气田具有良好的封闭条件和巨大的储存空间，往往已建有管道、钻井等基础设施，可以大大降低CO2储存成本。根据中国各含油气盆地天然气勘探资料和天然气资源评估结果，中国主要的含油气盆地气田可以储存约304.83×108 t CO2，相当于2002年全国CO2排放总量的9.2倍；其中已探明天然气资源所对应的CO2储存容量为41.03×108 t CO2，相当于2002年全国CO2排放总量的1.2倍。

Preliminary estimation of CO2 storage capacity in gas fields in China

Geological storage is one of potentially effective means of reducing anthropogenic atmospheric emission of CO2 to mitigate the worsening global climate change. Depleted natural gas reservoirs are likely be used to store anthropogenic CO2 because of their good geologic trap, huge storage capacities, existing infrastructures include transport pipelines and wells that can markedly reduce the cost of CO2 storage, and abundant experiences derived from underground natural gas storage projects. Based on the depth of gas fields derived from natural gas prospects and the natural gas reserve, the CO2 storage capacity in gas basins is estimated. About 304.83×108 t CO2 that is about 9.2 times as against the total CO2 emission of China in 2002 can be store in the gas basins. The proved CO2 capacity in gas basins reaches to 41.03×108 t which is 1.2 times as against the total CO2 emission of China in 2002.