摘要
Miller(1992)和Macgregor(1996)根据对全球石油储量和大油田储量的时代分布进行了研究,估算出它们的平均中值年龄分别为29Ma和35Ma,平均生存年龄分别为41Ma和55Ma。提出自然年龄的概念,即单纯由微渗漏和分子扩散作用造成油气藏(田)消亡的时间,并估算出大、中型气田和油田的平均自然年龄分别为70Ma和120Ma。无论是平均生存年龄还是平均自然年龄,相对于地质历史时期都很短暂。因此,古生代形成的油气藏(田)要在地史过程中保存下来,必须不断有烃源补给,或是具备各种晚期成藏的条件,诸如烃源岩晚成熟、构造圈闭晚定型以及次生油气藏的形成等等。
Miller(1992) adn Maegregor(1995) studied the era distribution of global petroleum reserves and large oil lield reserves.They estimated their average median ages at 29Ma and 35Ma and their existent ages at 41Ma and 55Ma.respectively,In this paper,the concept of natural age is put forward (natural age means the reservoir dievout tinte crused simply by permeation and molecular diffosion).The average matural ages of large and medium gas-oil fields are estimated at 70Ma and 120Ma.Whatever age is short relative to geologic era.Conrinual bydrocarbon sources or conditions of various late-period accumulations are the preconditions for Paleozoie oil gas accatnulations being conserved during the geological history,This is very important to evaluation oil bearing perspcctives of Palcozoie basins.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2006年第6期653-656,共4页
Petroleum Exploration and Development
关键词
油气藏
中值年龄
生存年龄
自然年龄
晚期成藏
oil-gas reservoir
median age
existent age
natural age
late-period accumulotion