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Quantitative assessment of free gas beneath gas hydrate stability zone from prestack seismic data and rock physics: a case of hole NGHP01-10A, Krishna-Godavari basin, India
Qian Jin1,2; Wang Xiu-Juan1,2; Dong Dong-Dong1; Wu Shi-Guo1,3; Kalachand, Sain4; Ye Yue-Ming5
2016-07-01
发表期刊CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
卷号59期号:7页码:2553-2563
文章类型Article
摘要Distribution, saturation and hydrate indicator of free gas beneath gas hydrate stability zone have been the difficulty in the research of gas hydrate. Amplitude versus offset (AVO) and rock physics can be used to quantitatively interpret free gas saturation. In this paper, seismic data, acquired at K-G basin, India, have been processed to preserve true amplitude information. Based on the logging data and horizon calibration, free gas saturation of NGHP01-10A is assessed with effective medium theory and AVO modeling. It is found that free gas saturation is related to its distribution patterns. Assessments of free gas saturation in homogeneous and patchy distribution are 0.3%similar to 0.4% and 3%similar to 4%, respectively. The results show good agreement with the crossplot of Poisson's ratio which are calculated by the measurement at NGHP01-10D. Free gas is further deduced to be homogeneous distribution on the base of dry matrix Poisson's ratio with the saturation of 0.3%similar to 0.4%.
关键词Gas Hydrate Rock Physics Avo Quantitative Assessment Free Gas Saturation
DOI10.6038/cjg20160720
收录类别SCI
语种英语
WOS记录号WOS:000379377100020
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/130956
专题海洋地质与环境重点实验室
作者单位1.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Evaluat & Detect Technol Lab Marine Mineral Resou, Qingdao 266061, Peoples R China
3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
4.Natl Geophys Res Inst, Hyderabad 500007, Andhra Pradesh, India
5.PetroChina, Hangzhou Res Inst Geol, Hangzhou 310023, Zhejiang, Peoples R China
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Qian Jin,Wang Xiu-Juan,Dong Dong-Dong,et al. Quantitative assessment of free gas beneath gas hydrate stability zone from prestack seismic data and rock physics: a case of hole NGHP01-10A, Krishna-Godavari basin, India[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2016,59(7):2553-2563.
APA Qian Jin,Wang Xiu-Juan,Dong Dong-Dong,Wu Shi-Guo,Kalachand, Sain,&Ye Yue-Ming.(2016).Quantitative assessment of free gas beneath gas hydrate stability zone from prestack seismic data and rock physics: a case of hole NGHP01-10A, Krishna-Godavari basin, India.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,59(7),2553-2563.
MLA Qian Jin,et al."Quantitative assessment of free gas beneath gas hydrate stability zone from prestack seismic data and rock physics: a case of hole NGHP01-10A, Krishna-Godavari basin, India".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 59.7(2016):2553-2563.
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