摘要
大油田在石油储量增长和产量构成中占有重要位置。截至2004年底,中国大油田的可采储量占总探明储量的77%,2004年大油田产量占全国石油产量的70%。中国大油田的储集层主要是白垩系和第三系的陆相碎屑岩,圈闭以背斜圈闭和混合圈闭为主,20世纪70年代是中国大油田发现的高峰期。中国的大油田主要分布在富油气凹陷中;凹陷的资源丰度越大,发现大油田所需的时间越短;凹陷的资源量越大,发现的大油田规模也越大。中国目前整体勘探程度比较低,未来在中西部地区和海域都可能有大油田发现。
Giant oilfields are important to the growth of oil reserves and production. By the end of 2004, the giant-oilfield reserves accounts for 77% of the total proved reserves in China, and the giant-oilfield production is 70% of the national production. The giant-oilfield reservoirs are mainly Cretaceous and Eogene terrigenous sandstones, and the traps are mainly anticlinal traps and complex traps. Most Chinese giant oilfields are distributed in the sags rich in oil and gas. The richer the oil resources are in the sags, the shorter the time of discovering giant oilfields is, the more the oil resources are in the sags, the bigger the scales of giant oilfields are. At present, the degree of exploration in China is very low, more giant oilfields are expected to be discovered in west China and offshore areas.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2006年第2期127-130,共4页
Petroleum Exploration and Development
基金
中国石油天然气股份有限公司"十一五"规划项目(KTQQ-2005-042)
关键词
中国
大油田
地质时代
圈闭类型
发现时间
分布特征
China
giant oilfield
geologic age
trap style
discovery time
distribution characteristics
