中国深部油气藏的形成与分布初探

FORMATION AND DISTRIBUTION OF DEEP OIL AND GAS RESERVOIRS IN CHINA

我国大型含油气盆地深部具备了形成油气藏的基本条件，并已发现了一系列深部油气藏。深部油气藏的形成主要受深部生储盖条件的制约。研究认为：继承型达合盆地古生界地层保存完整，有利于深部油气藏的形成；改造型迭合盆地古生界地层受到严重破坏，油气藏仅限于第三系的拗陷深部。两种盆地中深部油气藏的分布模式截然不同。本文初步探讨了深部油气藏的类型、形成条件及分布规律。

Formation of deep oil and gas reservoir is mainly constrained by deep source bed, reservoirbed and caprock. In oil-gas bearing basins in our country, there are favourable conditions forthe formation of oil-gas reservoir and a series of deep oil and gas field had been discovered.The complete conservation of Palaeozoic strata in an inherited superimposed basin isfavourable to forming deep oil and gas reservoirs. The Palaeozoic strat in a reformed superimposed basin was destroyed. The deep oil and gas reservoirs are discovered in the deep Tertiary depressions. Models of distribution of deep oil-gas reservoirs is different in these twobasins.