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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
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
Volume59Issue:7Pages:2553-2563
AbstractDistribution, 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%.
SubtypeArticle
KeywordGas Hydrate Rock Physics Avo Quantitative Assessment Free Gas Saturation
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.6038/cjg20160720
Indexed BySCI
Language英语
WOS KeywordBOTTOM-SIMULATING REFLECTORS ; SOUTH CHINA SEA ; PATCHY SATURATION ; EAST-COAST ; MARGIN ; AVO ; COEFFICIENTS ; EVOLUTION ; INVERSION ; DEPOSIT
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000379377100020
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/1596
Collection深海科学研究部_深海地球物理与资源研究室
Affiliation1.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
Recommended Citation
GB/T 7714
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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