摘要
中国东部陆相断陷盆地及近海陆架盆地CO2资源丰富,成因类型较复杂,根据通常的成因判识标准与划分参数(δ13CCO2和3He/4He),可将上述盆地CO2明确划分为壳源型(有机和无机)、壳幔混合型及火山幔源型等3型4类;但依据20世纪90年代初以来诸多学者提出的CO2/3He比值来判识划分,则存在较大的偏差及多解性。文中通过对CO2成因判识划分方法的对比,遵循科学性、实用性、通用性及简洁性的原则,在前人工作的基础上,采用通常的成因判识划分方法,对中国东部陆相断陷盆地及近海陆架盆地CO2成因进行了综合判识划分,并对不同成因类型CO2的运聚规律进行了分析与探讨。
There are rich CO2 resources in the eastern China continental rifted basins and offshore shelf basin, but its origin is complex. According to the general parameters to identify CO2 origin（δ^13CCO2 and ^3He/^4He）, the CO2 gas can be divided into three types, i.e. crust type （including organic and inorganic subtypes）, crust-mantle mixed type and volcanic-mantle type. But according to the CO2/^3He ratio proposed by many researchers since early 1990s, there will be substantial deviations and multiple solutions in CO2 origin. By comparing different identification approaches to CO2 origin, a general approach is used to identify CO2 origin in the basins, and the migration and accumulation are analyzed and discussed for CO2 of different origin types.
出处
《中国海上油气（工程）》
2005年第3期153-162,共10页
China Offshore Oil and Gas
基金
中国科学院知识创新工程项目(KZCX2SW11703)
中国科学院广州地球化学研究所创新项目(GIGCX0307)
国家自然基金项目(40306010)等联合资助
