新疆石油地质 ›› 2010, Vol. 31 ›› Issue (5): 454-459.

• 油气勘探 • 上一篇    下一篇

海拉尔和塔木察格盆地深部地壳构造与油气勘探方向

张景廉, 雷明, 卫平生, 曹正林, 阎存凤   

  1. 中国石油 勘探开发研究院 西北分院,兰州 730020
  • 收稿日期:2010-05-10 发布日期:2020-10-21
  • 作者简介:张景廉(1941-),男,江苏常熟人,研究员,地球化学,(Tel)0931-8686360(E-mail)zhang_n@petrochina.com.cn.

The Deep Crust Structure Features and Petroleum Exploration Potential in Hailar-Tamtsag Basin

ZHANG Jing-lian, LEI Ming, WEI Ping-sheng, CAO Zheng-lin, YAN Cun-feng   

  1. Northwest Branch, Research Institute of Petroleum Exploration and Development, PetroChina, Lanzhou, Gansu 730020, China
  • Received:2010-05-10 Published:2020-10-21

摘要: 海拉尔和塔木察格盆地的油气勘探近来倍受关注,但盆地的“非典型沉积岩”的成因、布达特群原油的来源及成因仍不清楚。从地幔热液流体、同位素地球化学省、盆地中地壳低速高导层分布的研究表明,作为特殊储集层的非典型沉积岩是地幔富碱、碱土金属流体的Na、K、Mg 交代作用的产物;而作为太平洋型块体的中蒙块体有着巨大的油气资源潜力,盆地中地壳的低速高导层制约了油气田的分布。因此,海拉尔和塔木察格盆地的油气可能为深部无机成因,根据这一思路,布达特群潜山带可望找到更多大型油气田。

关键词: 海拉尔和塔木察格盆地, 非典型沉积岩, 地幔富碱流体, 同位素地球化学省, 中地壳低速高导层, 无机油气

Abstract: Petroleum exploration of Hailar-Tamtsag basin is closely paid attention to recently. But the origin of non typical sedimentary rocks and the origin and genesis of Budate group crude oil are still not clear. The study on the mantle fluids, isotopic geochemical provinces, the distribution of low-velocity and high-conductive layers in mid-crust shows that ① the non typical sedimentary rocks as special reservoirs are products of metasomatism among mantle fluids enriched with alkali metals K, Na and alkaline earth metal Mg; ② Sino-Mongolia block as the Pacific-type block has the giant petroleum resource potential; ③ the low velocity-high conductive layer of mid-crust in this basin controls the distribution of oil-gas fields. Therefore, some of the oil and gas in Hailar-Tamtsag basin might belong to the deep inorganic origin. According to this hypothesis, some large oil and gas fields may be found in Budate group buried hill belt.

Key words: Hailar-Tamtsag basin, non typical sedimentary rock, Butate group buried hill, mantle alkaline fluid, isotopic geochemical province, low velocity and high conductive layer, mid-crust, inorganic oil and gas

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