Assessing the conditions favorable for the occurrence of gas hydrate in the Tuonamu area Qiangtang basin, Qinghai-Tibetan, China
Assessing the conditions favorable for the occurrence of gas hydrate in the Tuonamu area Qiangtang basin, Qinghai-Tibetan, China
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DOI：
10.1016/j.enconman.2011.08.012
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发表时间：
2012-01-01
影响因子：
10.4
通讯作者：
Chen, Yanting
中科院分区：
文献类型：
--
作者：
He, Jianglin;Wang, Jian;Chen, Yanting
然而，该地区天然气水合物勘探工作相对较少。在岩心样品、地震资料和实验室分析的基础上，对拓纳木地区天然气水合物形成的控制因素进行了评价，初步认识了拓纳木地区天然气水合物的分布规律。认为深部烃源岩是沱纳木地区天然气水合物形成的主要热源。本区天然气水合物稳定带厚度约为300 m。该地区的天然气水合物极有可能以天然气水合物-水的形式存在。气源条件是天然气水合物形成的关键因素，天然气水合物层主要以层间形式存在。深断裂周边地区是沱纳木地区天然气水合物勘探的有利靶区。(C) 2011 Elsevier Ltd.版权所有。
Qiangtang basin, which is located in the largest continuous permafrost area in Qinghai Tibetan Plateau, is expected to be a strategic area of gas hydrate exploitation in China. However, relatively little work has been done on the exploration of gas hydrate in this area. In this work, we evaluated the factors controlling the formation of gas hydrate in the Tuonamu area and provided a preliminary insight into gas hydrate distribution in it on the basis of the core samples, seismic data and laboratory analysis. It can be concluded that the source rock in the deeper formation would be dominant thermogenic source for the formation of gas hydrate in Tuonamu area. The thickness of gas hydrate stable zone in this area is about 300 m. The gas hydrate in the area most probably is in the form of gas-hydrate-water. The source condition is the key factor for the formation of gas hydrate and the gas hydrate layer would be mainly present in the form of interlayer in this area. The areas around the deeper faults are the favorable targets for the exploration of gas hydrate in the Tuonamu area. (C) 2011 Elsevier Ltd. All rights reserved.