摘要
把地质过程作为稳态的、渐变的过程来对待 ,可简化地质问题 ,并且便于用数学语言表述 ,但是却忽视了突变过程。石油与天然气从生成到运移成藏再到保存 ,都是处于变动着的沉积盆地之中。沉积盆地所经历的变动既有渐变 ,也有突变。迄今为止 ,研究者们对油气的初次运移、二次运移、油气藏的保存条件等方面的研究大多是基于对地质过程渐变的假设。基于渐变的定量研究基本上忽视了突变地质过程的巨大影响。研究烃源岩排烃、油气二次运移、油气藏保存等方面的突变过程具有重要意义 ,而忽略突变过程可能带来错误。
Petroleum geologists usually take geological processes as being steady and gradual, which can simplify those complicated geological problems and offer convenience to the quantified description of those processes,but it also gives some serious defects by neglecting the great influence of sudden processes. Oil and gas are all in the circumference of sedimentary basins under continuous tectonic movements which include both gradual and sudden changes. By now,most of the studies on petroleum geological processes, such as primary migration and secondary migration of oil and gas,preservation and destruction of oil and gas pools, are based on an extremely simplified presupposition that petroleum geological processes are gradual. But through such studies,we could not obtain an overall grasp of the very nature of petroleum geological evolution.This paper summarizes the new lights shed on researches of these processes and gives a new and high evaluation about the influences of sudden processes in petroleum geological evolution.
出处
《石油大学学报（自然科学版）》
CSCD
2000年第4期34-38,42,共6页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
石油地质
初次运移
二次运移
地质演化
演化过程
petroleum geology
primary migration
secondary migration
preservation
sudden changes
gradual changes
