新疆石油地质

新疆石油地质 ›› 2010, Vol. 31 ›› Issue (6): 563-566.

• 油气勘探 •    下一篇

天然气水合物成藏机理及主控因素

魏伟, 张金华, 吝文, 王莉   

  1. 中国石油 勘探开发研究院 廊坊分院,河北 廊坊 065007
  • 收稿日期:2010-07-07 发布日期:2021-01-18
  • 作者简介:魏伟(1966-),男,新疆石河子人,高级工程师,博士,石油地质,(Tel)010-69213292(E-mail)weile@petrochina.com.cn.
  • 基金资助:
    中石油科技管理部项目(2008B–0501)

Mechanism and Controlling Factors of Natural Gas Hydrate Accumulation

WEI Wei, ZHANG Jin-hua, LIN Wen, WANG Li   

  1. Langfang Branch, Research Institute of Petroleum Exploration and Development, PetroChina, Langfang, Hebei 065007, China
  • Received:2010-07-07 Published:2021-01-18

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摘要： 天然气水合物在世界范围内分布广泛,主要分布在海洋和冻土带地区,并与地质构造环境密切相关。目前已发现的天然气水合物矿点,主要是通过似海底反射地震显示进行识别的。天然气水合物的甲烷来源主要有生物气、热解气和无机成因气,大多数研究主要立足于甲烷气的成因来探究天然气水合物的聚集和成藏机理。分析了天然气水合物形成的主控因素,包括气源、沉积、构造、温压等条件,这些条件控制着天然气水合物的赋存状态、形成规律和规模大小,并对墨西哥湾天然气水合物成藏有利条件进行了分析,对我国天然气水合物的勘探有借鉴意义。

关键词: 天然气水合物, 成藏机理, 有利条件, 规模

Abstract: Gas hydrates are widely distributed in the world, mainly in the oceans and permafrost regions, and closely related with the geological and structural environment. Now, these gas hydrates deposits that have been found are mainly identified by BSR. The methane origin in gas hydrates includes biogenic, pyrolysis gas genetic and inorganic gases. The gas hydrates accumulation and mechanism explored by most researchers is mainly based on the genesis of methane gas. This paper analyzes the controlling factors of forming gas hydrates, including the gas source, deposition conditions, geological structural conditions, temperature and pressure conditions, etc. It is these that control the existing state, formation mechanism and scale of gas hydrates deposits. Also, this paper analyzes the favorable conditions of gas hydrate accumulation in the Gulf of Mexico for the purpose of being taken as a reference for China's gas hydrate exploration.

Key words: natural gas hydrate, accumulation mechanism, favorable conditions, scale

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