海洋地质与第四纪地质2017，Vol.37Issue(5)：122-130,9.DOI:10.16562/j.cnki.0256-1492.2017.05.012
基于测井与地震多属性分析神狐海域天然气水合物分布特征
DISTRIBUTION OF GAS HYDRATE IN SHENHU AREA: IDENTIFIED WITH WELL LOG AND SEISMIC MULTI-ATTRIBUTES
摘要
Abstract
High quality gas hydrate samples have been successfully recovered from the Shenhu area,the northern slope of South China Sea.The spatial distribution of gas hydrate varies greatly owing to the complex fluid movement caused by lateral migration of canyons and gas chimneys.In this paper,we identified the BSR and erosional canyon surface with well logging and seismic data and the extracted multiple seismic attributes along the theoretical base of the gas hydrate stability zone (BGHSZ).It is found that the amplitude type of attributes are sensitive to gas hydrate after optimization of all extractable seismic attributes.Description of gas hydrate bodies suggests that the distribution pattern of gas hydrate changes from site to site.It is horseshoe-shaped at Site W19 and U-shaped and point-shaped at Site W18 respectively,depending upon the topography of the local structural high.Gas hydrate occurrences are inconsistent with lithology according to well log data.It is mainly distributed at the top of a large gas chimney structure.Fluid flow is an essential element for gas hydrate deposition in this area,and thermogenic gas contributes to higher gas hydrate saturation.关键词
天然气水合物/振幅属性/空间分布/侵蚀面/神狐海域Key words
gas hydrate/attribute analysis/spatial distribution/erosion surface/Shenhu area分类
海洋科学引用本文复制引用
靳佳澎,王秀娟,陈端新,郭依群,苏丕波,梁金强,钱进..基于测井与地震多属性分析神狐海域天然气水合物分布特征[J].海洋地质与第四纪地质,2017,37(5):122-130,9.基金项目
中国地质调查局南海水合物勘探项目(DD20160211) （DD20160211）
国家自然科学基金项目(41676041,41676040) （41676041,41676040）
