松辽盆地南部保康体系上白垩统CO2埋存条件与潜力

CO₂地下埋存是一项缓解全球气候变暖的措施.采用沉积地质学的研究方法, 首次对松辽盆地南部长岭凹陷的保康沉积体系沿水流方向进行连井剖面分析, 结合室内显微镜薄片鉴定和岩心观察等手段, 对保康体系的沉积相类型及其时空分布规律、储盖层沉积特征、水文地质及构造特征等进行了研究.结果表明, 研究区青山口组-嫩江组是CO₂地下埋存的良好储盖组合, 同时计算研究区CO₂埋存量为7.43×109 t, 大约相当于2002年中国CO₂排放量的2倍、2009年中国的全年排放量. 

CO2 Storage Conditions and Capacity of Upper Cretaceous Series in Baokang Sedimentary System in the Southwest of Songliao Basin

The CO₂ geological storage is an effective approach to mitigate global warming. The Baokang sedimentary system of Changling depression in the south part of Songliao Basin, choosen as the study area for CO₂ storage capacity, is explored with sedimentary geology approach. A connected-well's profile map along the flow direction of Baokang System is investigated for the first time. The sedimentary facies, temporal and spatial distribution, sedimentary features, hydrogeology feature and tectonic characteristics of Baokang sedimentary system are studied based on observing cores and identifying rock thin sections under microscope. The results show that Qingshankou to Nenjiang Formation is favorable reservoir-caprock pair for underground CO₂ storage and the total amount of potential CO₂ storage capacity is estimated as 7.43×109 t, which is about two times the total volume of CO₂ emission in China in 2002, or the total volume of CO₂ emission in China in 2009.