新疆石油地质 ›› 1998, Vol. 19 ›› Issue (2): 95-100.

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塔里木、准噶尔盆地石油生成与演化

张景廉, 朱炳泉, 涂湘林, 张平中   

  1. 中国石油天然气总公司西北石油地质研究所 兰州 730020
  • 收稿日期:1997-11-28 出版日期:1998-04-01 发布日期:2020-11-15
  • 作者简介:张景廉:高级工程师 地球化学

HYDROCARBON GENERATION AND EVOLUTION IN TARIM AND JUNGGAR BASINS

Zhang Jinglian, Zhu Bingquan, Tu Xianglin, Zhang Pingzhong   

  1. Northwest Petroleum Geological Institute, CNPC, Lanzhou 730020
  • Received:1997-11-28 Online:1998-04-01 Published:2020-11-15
  • About author:Zhang Jinglian, Senior Engineer, Geochemistry

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。

关键词: 塔里木盆地, 准噶尔盆地, 同位素, 石油成因, 无机成因, 干酪根, 沥青

Abstract: 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, ③when did hydrocarbon generate, and ④when 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 crust-mantle interaction belt)should be regarded as target areas for finding large- and ultralarge-scale oil/gas fields.Northern, southwestern and northeastern areas in Tarim basin, as well as basement in Junggar basin should be favourable area for finding large-scale oil/gas fields.

Key words: Tarim basin, Junggar basin, Isotope, Hydrocarbon origin, Inorganic origin, Kerogen, Bitumen