我国主要沉积盆地CO_2地质储存的地热条件适宜性评价  

Assessment of the suitability of geological storage of CO_2 according to geothermal conditions of sedimentary basins in China

作　　者：吴庆华[1] 蔺文静[1] 梁继运[1] 刘春雷[1] 王贵玲[1] 

机构地区：[1]中国地质科学院水文地质环境地质研究所,石家庄050803

出　　处：《水文地质工程地质》2012年第4期132-136,144,共6页Hydrogeology & Engineering Geology

基　　金：中国地质调查项目(1212011120064)

摘　　要：CO2地质储存是减少人类活动产生的CO2向大气排放的有效措施之一。目前CO2地质储存适宜性评价中仅把地热条件作为单一因子进行考虑,难以准确评价地热条件对CO2地质储存的影响,评价精度较差。为此本文采用加权法将地热条件三因素(大地热流、地温梯度与地表年均气温)进行CO2地质储存适宜性评价,提高了精度。表明:我国总体上较适宜CO2地质储存,储存空间大。2.1%(8.5×104km2)沉积盆地适宜CO2地质储存,68.6%(274.0×104km2)较适宜,24.6%(98.4×104km2)一般适宜,4.7%较不适宜(18.7×104km2),无不适宜区。Geological storage of CO2 is one of the mean measurements for avoiding the release of anthropogenic CO2 into the atmosphere,which may prevent the global temperature rising.At present,the geothermal regime is one of the most important factors for the suitability assessment.However,the rationality of geothermal reign needs to be improved.This paper assesses the geothermal suitability of CO2 storage with the weighting method,using geothermal gradient,terrestrial heat flow and surface temperature.The results show that 2.1%（8.5×104 km2） of sedimentary basins are the most suitable for CO2 geological sequestration,68.6%（274.0×104 km2） are better suitable,24.6%（98.4×104 km2） are suitable,4.7%（18.7×104 km2） are less suitable.However,the worst suitable sedimentary basins have not been found.The results improve the accuracy of geothermal conditions for the suitability assessment of CO2 storage.

关 键 词：沉积盆地 CO2地质储存 地热条件 适宜性评价 

分 类 号：P314.2[天文地球—固体地球物理学]