新疆石油地质 ›› 2008, Vol. 29 ›› Issue (4): 528-531.

• 讨论与争鸣 • 上一篇    下一篇

中国西部大气田形成与深部地壳构造的关系

方乐华, 张景廉, 陈启林, 石兰亭, 卫平生, 张虎权   

  1. 中国石油石油勘探开发科学研究院西北分院, 兰州730020
  • 收稿日期:2008-01-09 发布日期:2020-10-09
  • 作者简介:方乐华(1963-), 男, 江苏常熟人, 高级工程师, 博士, 石油地质,(Tel)0931-8686114(E-mail)fanglh@petrochina.com.cn.

Relationship Between Large Gas Fields and Deep Crust Structures in West China

FANG Le-hua, ZHANG Jing-lian, CHEN Qi-lin, SHI Lan-ting, WEI Ping-sheng, ZHANG Hu-quan   

  1. Northwest Branch, Research Institue of Petroleum Exploration and Development, PetroChina, Lanzhou, Gansu 730020, China
  • Received:2008-01-09 Published:2020-10-09

摘要: 近年来, 中国西部大气田与塔里木板块、扬子板块、中朝板块之间的关系引起高度关注。随着板块构造理论在世界大陆的失败, 对于与俯冲带相关的弧后引张、大陆增生、地壳物质返回地幔、成矿作用和油气藏等均存在较大问题。以一些大气田为例说明天然气的生成与深部地壳构造有关, 尤其是与中地壳的低速高导层有关, 在中地壳的低速高导层中, 天然气可通过地幔流体(如CO2、CO、H2等) 进行费-托合成。天然气的生成与分布与这一假说相一致。按照这一假说, 预测了一些未来的大气田的方向。

关键词: 板块构造, 大气田, 天然气生成, 低速高导层, 中地壳

Abstract: In recent years, the relations between the large gasfields in West China and the evolutions of Tarim plate, Yangtze plate and Sino-Korean plate are paid close attention to. Following the failure of plate tectonic theory in the continents around the world, problems also arise from geologic phenomena that are associated with subduction zones including back-arc spreading, continental growth, recycling of crustal materials, mineralization and petroleum accumulation. This paper takes some large gasfields as examples to explain the natural gas generation is related with the deep crustal structures, especially with the low velocity-high conductive zone of the mid-crust, in which the natural gas can be synthesized by mantle fluids (CO2, CO, H2, etc.). Natural gas generation and distribution are in accordance with this hypothesis. According to this hypothesis, some new large gas fields are predicted.

Key words: plate structure, large gas field, gas generation, low velocity-high conductive zone, mid-crust

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