摘要
浅表层天然气水合物具有埋藏浅、厚度大、纯度高等特点。现有的评价方法多针对于具有明显BSR反射特征的中深层天然气水合物,而对浅表层天然气水合物的相关研究鲜有发表。本研究通过对国内外浅表层水合物发育区广泛调研,以浅表层水合物的形成机理为基础,探究水合物资源评价方法的选择;以水合物空间展布规律为参考,明确评价范围界定条件;以综合指示特征为参考,分析评价参数的选取依据。并在此基础上,与中深层天然气水合物进行对比,提出浅表层天然气水合物资源刻度区选取及解剖的初步建议,引出评价中存在的问题,梳理出浅表层天然气水合物的资源评价方法的关键问题。
The shallow gas hydrate is characterized by shallow burial depth,large thickness and high purity,compared with that in deep sediments.At present,the diffusion gas hydrate in the medium-deep marine sediments is the main target of resource evaluation for the obvious BSR reflection characteristics,while the systematic evaluation of shallow gas hydrate is rarely reported.Based on the formation mechanism of shallow surface hydrate,this paper is devoted to the feasible assessment methods for hydrate resources in shallow sediments,the definition of evaluation scope based on the spatial distribution patterns of gas hydrate,and the selection of evaluation parameters with reference to the comprehensive indication characteristics of hydrate.Finally,preliminary suggestions are made on the selection basis of the calibrated unit of shallow gas hydrate resources and educe the key problems in the resource evaluation methods for shallow gas hydrates.
作者
孙运宝
蔡峰
李清
闫桂京
梁杰
董刚
骆迪
李昂
王星星
钟伟杰
SUN Yunbao;CAI Feng;LI Qing;YAN Guijing;LIANG Jie;DONG Gang;LUO Di;LI Ang;WANG Xingxing;ZHONG Weijie(Key Laboratory of Gas Hydrate of Ministry of Natural Resources,Qingdao Institute of Marine Geology,China Geological Survey,Qingdao 266071,China;Laboratory for Marine Mineral Resources,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266071,China;Shandong Coalfield Geological Planning and Investigation Institute,Jinan 250104,China)
出处
《海洋地质前沿》
CSCD
2020年第9期87-93,共7页
Marine Geology Frontiers
基金
国家重点研发计划(2018YFC0310001)
山东省自然科学基金(ZR201807100270)。
关键词
浅表层天然气水合物
刻度区
资源评价
数值模拟
shallow gas hydrate
calibrated unit
resource evaluation
numerical simulation
