摘要
以塔里木、准噶尔盆地干酪根、沥青的Pb、Sr、Nd同位素分析资料,回答了石油地质学家必须回答的四个问题:①石油是由什么生成的;②石油是如何生成的;③石油是何时生成的;④石油又是何时运移的。根据Pb、Sr、Nd同位素所揭示的信息指出,塔里木、准噶尔盆地的石油虽然是在不同构造背景下生成的,生油模式、生油年龄和运移年龄也不相同,但都是由费托合成反应无机生成的。作者指出,地球化学急变带对油气田分布的控制作用十分明显,今后应把地球化学急变带,即深源壳幔相互作用的地带作为寻找大型、超大型油气田的重点地区,塔里木盆地的塔北、塔西南、塔东北地区,准噶尔盆地的基底都是寻找大型油气田的有利地区。
Based on lead,strontium and neodymium isotopes data in kerogen and bitumen in Tarim and Junggar basins, this paper discussed four problems that have to be answered by petroleum geologists: ① what to generate hydrocarbon, ② how to generate hydrocarbon, ③ when did hydrocarbon generate, and ④ when did hydrocarbon migrate, and pointed out that hydrocarbons in Tarim and Junggar basins generated in different tectonic background, hydrocarbon generation model, time and migration time were different, but their generation complied with inorganic synthetic reaction process proposed by Fisher and Tropsch. The author considers that controls of geochemical steep belt on distribution of oilfield are very obvious, hence geochemical steep belt(deep source crustmantle interaction belt) should be regarded as target areas for finding large and ultralargescale oil/gas fields. Northern, southwestern and northeastern areas in Tarim basin, as well as basement in Junggar basin should be favourable area for finding largescale oil/gas fields.
出处
《新疆石油地质》
CAS
CSCD
1998年第2期95-100,共6页
Xinjiang Petroleum Geology
关键词
塔里木盆地
同位素
石油成因
干酪根
沥青
Tarim basin Junggar basin Isotope Hydrocarbon origin Inorganic origin Kerogen Bitumen