| Characteristics of bottom-simulating reflectors for Hydrate-filled fractured sediments in Krishna-Godavari basin, eastern Indian margin | |
Wang, Jiliang1,2 ; Sain, Kalachand3; Wang, Xiujuan1; Satyavani, Nittala3; Wu, Shiguo1; Sain, K (reprint author), CSIR, Natl Geophys Res Inst, Uppal Rd, Hyderabad 500007, Andhra Pradesh, India.
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| 2014-10-01 | |
| 发表期刊 | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
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| 卷号 | 122页码:515-523 |
| 文章类型 | Article |
| 摘要 | The bottom-simulating reflector (BSR) is weak and patchy on the seismic section in the Krishna-Godavari basin, eastern Indian margin, where massive gas-hydrates have been recovered at Site 10 of the Indian National Gas-hydrates Program Expedition 01 (NGHP-01). The depth of the BSR near this site is around 160 m below the sea floor (mbsf). The average reflection coefficient from the BSR is -0.06, significantly smaller than the common global values of -0.1 to -0.2. The BSR shows a strong lateral variation in amplitudes along the seismic line due to the presence of faults. The methane solubility is modeled using a theoretical model of the gas-hydrates system, and methane concentrations from the pressure core show that the distribution of free gas below BSR is not uniform. A combination of synthetic seismogram analysis and rock physics modeling leads to the conclusion that weak and patchy BSRs are primarily caused by lateral discontinuities induced by the gas-filled fractures below BSRs. The free gas zone is thin and it shows segmented characteristics on the seismic section and acoustic impedance profile that we inverted. Fault zones increase the permeability and therefore trap gas in associated fractures that can scatter seismic energy and create low velocity zones. (C) 2014 Elsevier B.V. All rights reserved. |
| 关键词 | Gas Hydrate Free Gas Krishna-godavari Basin Fracture Patchy Distribution |
| 学科领域 | Energy & Fuels ; Engineering |
| DOI | 10.1016/j.petrol.2014.08.014 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000345182300048 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/23800 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Sain, K (reprint author), CSIR, Natl Geophys Res Inst, Uppal Rd, Hyderabad 500007, Andhra Pradesh, India. |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.CSIR, Natl Geophys Res Inst, Hyderabad 500007, Andhra Pradesh, India |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Wang, Jiliang,Sain, Kalachand,Wang, Xiujuan,et al. Characteristics of bottom-simulating reflectors for Hydrate-filled fractured sediments in Krishna-Godavari basin, eastern Indian margin[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2014,122:515-523. |
| APA | Wang, Jiliang,Sain, Kalachand,Wang, Xiujuan,Satyavani, Nittala,Wu, Shiguo,&Sain, K .(2014).Characteristics of bottom-simulating reflectors for Hydrate-filled fractured sediments in Krishna-Godavari basin, eastern Indian margin.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,122,515-523. |
| MLA | Wang, Jiliang,et al."Characteristics of bottom-simulating reflectors for Hydrate-filled fractured sediments in Krishna-Godavari basin, eastern Indian margin".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 122(2014):515-523. |
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