摘要
改造盆地在我国分布广、数量多 ,为未来油气资源的主要接替区。这由中国大陆结构复杂、活动性强等基本特征所决定。油气的聚散、成藏和分布既严格受成盆期和成盆期前构造格局的控制 ,又明显受成盆期后每一次构造运动和任一种改造形式的影响 ,因而油气成藏过程复杂、分布规律多变 ,研究和勘探难度颇大。改造盆地研究与评价的思路和程式为 :( 1 )厘定盆地属性 ,分析动力环境 ;( 2 )恢复原始盆地 ,回归今盆位置 ;( 3)揭示改造过程 ,明确几个时期 ;( 4 )确定改造程度 ,划分保存单元 ;( 5)探讨聚散特点 ,评价资源规模 ;( 6)重视多源油气 ,突破单一模式 ;( 7)多期动态聚散 ,突出晚期成藏 ;( 8)注意差异改造 ,切忌以点代面。
Reformed basins that are widely and numerously found in China are the main replacing areas for China's oil and gas exploration.Oil and gas generation,accumulation,migration,pool-forming and distribution in the reformed basins were controlled by both the tectonic framework of pre-basin stage and the tectonic movements and structural forms of post-basin stage.So oil and gas pool-forming processes were complicated and oil-gas distribution regularity was varied.The process or thinking for the researches and oil-gas assessment of the reformed basins includes:1.collating the attribution of the basin and analysing its dynamic circumstances;2.reverting to the original basin;3.revealing the reformation process of the basin;4.determining the reformation degree and classifying the basin's retention units;5.approaching the characteristics of oil and gas accumulation and dispersion,assessing resources amount;6.taking multi-source hydrocarbon into account;7.paying more attention to late-stage pool-forming;8.paying attention to differential reformation.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2000年第1期11-14,共4页
Oil & Gas Geology
基金
国家重点基础研究发展规划项目! (G19980 4 0 80 1- 5)资助
关键词
改造盆地
油气评价
沉积盆地
油气成藏
动力学
reformed basin
research thinking
basin reconstruction
reformation process
retention unit
late-stage pool-forming
oil-gas assessment
Chinese sedimentary basin
