天然气水合物稳定带顶界面确定研究进展  

Advances in Researching on Determining the Top Boundary of Gas Hydrate Formation Zone

作　　者：黄国成[1] 庄新国[2] 吕万军[2] 郭依群[3] 王宏斌[3] 

机构地区：[1]中国地质大学研究生院,武汉430074 [2]中国地质大学资源学院,武汉430074 [3]广州海洋地质调查局,广州510760

出　　处：《地质科技情报》2007年第4期57-62,共6页Geological Science and Technology Information

基　　金：广州海洋地质调查局项目"南海天然气水合物资源综合评价及勘探开发战略研究"(GZH200200203)

摘　　要：天然气水合物稳定带的顶、底界面在空间上限制了天然气水合物在自然界中的实际分布,同时也是进行天然气水合物资源评价的基础,对了解其成矿规律、指导勘探开发具有重要意义。确定天然气水合物稳定带顶界面的方法主要有3种:①利用理论模型模拟的方法;②利用地球化学异常的方法;③利用地球物理资料的方法,其中第一种方法比较粗略,后两种方法比较精确,但在数据处理上的难度较大。The boundary of gas hydrate formation zone limits the distribution of gas hydrate in nature environment, and uses as the base of the gas hydrate resource assessment. It is also important in comprehending the mineralization rules and exploring the gas hydrate. Based on the investigation of previous achievements, those three major methods used to determine the top boundary of gas hydrate are summarized as follows： ①numerical method based on the theoretical simulation and calculation; ②geochemical method based on the anomaly of chemical elements and isotopes; ③geophysical method based on the seismic data and other geophysical properties. In addition, the first method is relatively coarse, while the latter two are relatively accurate. However, the latter two have difficulties in data handling.

关 键 词：天然气水合物 顶界面 稳定带 资源评价 

分 类 号：P618.13[天文地球—矿床学] TE122[天文地球—地质学]