天然气水合物成因探讨及中国海域勘探前景

2003年 23卷 第1期
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Discussion on the Origin of Gas-hydrate and Exploration Prospect in China Offshore
张景廉 于均民 崔永强 曹正林 李相博
ZHANG Jing-lian YU Jun-min CUI Yong-qiang CAO Zheng-lin LI Xiang-bo
中国石油勘探开发研究院 西北分院, 兰州 730020; 大庆油田公司 勘探开发研究院, 大庆 163712
PetroChina Northwest E & P Research Institute, Lanzhou Gansu 730020; Exploration and Development Research Institute of Daqing Oilfield Company Ltd., Daqing Heilongjiang 163712
根据天然气水合物地质分布特征以及在热液条件非生物成因甲烷的碳同位素组成,表明:分布于极地、大陆永冻土带及洋底(缺少或缺失沉积物)的天然气水合物极有可能是一种热液烃,这种烃为无机合成的产物。提出了相应的天然气水合物的形成模式,这种模式很好地解释了巨量的天然气水合物的生成。对中国海域天然气水合物的勘探前景作了分析。
Based on gas-hydrate distribution and carbon isotopic compositions of abiogenic methane under hydrothermal conditions, it is shown that gas-hydrate might be a hydrothermal hydrocarbon which is formed by inorganic synthesis. A special hydrocarbon formation model is presented. The exploration prospect of natural gas hydrate in China offshore is reviewed.
天然气水合物; 热液烃; 无机合成; 成烃模式; 勘探前景;
gas-hydrate; hydrothermal hydrocarbon; inorganic synthesis; hydrocarbon formation model; exploration prospect;