The effects of gas saturation on the acoustic velocity of carbonate rock | |
Zhu, Honglin1![]() ![]() ![]() ![]() | |
刊名 | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
![]() |
2015-09-01 | |
卷号 | 26页码:149-155 |
关键词 | Carbonate Rock Gas Saturation P-wave And S-wave Velocities Ratio Of P-wave Velocity To S-wave Velocity (V-p/v-s) Gassmann Equation |
ISSN号 | 1875-5100 |
DOI | 10.1016/j.jngse.2015.06.013 |
英文摘要 | Changes in the P-wave and S-wave velocities (V-p and V-s, respectively) and their ratio at different gas saturations in carbonate rock were investigated experimentally in this study. The results showed the following: (I) Both the P-wave velocity and V-p/V-s tended to decrease as the gas saturation increased, while the S-wave velocity marginally decreased or remained constant. These measured results were in agreement with the theoretical calculations of the Gassmann fluid substitution equation. (2) The acoustic velocity was related to the acoustic frequency. Most rock samples showed the tendency of V-p (1000 kHz) < V-p (50 kHz) < V-p (250 kHz) and V-s (1000 kHz) < V-s (50 kHz) < V-s (250 kHz). The primary distribution domain of V-p/V-s also varied with different frequencies and generally showed that V-p/V-s when S-g = 0% was larger than that when S-g = 100%. (3) Considering fully saturated rock as the water zone, it was found that V-p/V-s decreases from its initial value as the gas pressure increases; a sharper decline, indicating a transition from the water zone to the gas zone, was also found. Additionally, the integrated use of a cross-plot analysis of V-p/V-s vs. P-wave impedance was used to more accurately identify the gas zone in carbonate rock. This study provides some helpful references for gas-zone identification in carbonate rock using acoustic logging data in practical applications. (C) 2015 Elsevier B.V. All rights reserved. |
资助项目 | Chongqing Basic and Frontier Research Projects[cstc2014jcyjA90008] |
WOS研究方向 | Energy & Fuels ; Engineering |
语种 | 英语 |
出版者 | ELSEVIER SCI LTD |
WOS记录号 | WOS:000366225700016 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.138/handle/2HOD01W0/2100] ![]() |
专题 | 生态过程与重建研究中心 中国科学院重庆绿色智能技术研究院 综合办公室 |
作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China 2.Chongqing Mineral Resources Dev Co Ltd, Chongqing, Peoples R China 3.PetroChina Co Ltd, Shunan Gas Mine, Southwest Oil & Gas Field Branch Co, Lu Zhou, Sichuan, Peoples R China |
推荐引用方式 GB/T 7714 | Zhu, Honglin,Tan, Yanhu,Chen, Qiao,et al. The effects of gas saturation on the acoustic velocity of carbonate rock[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2015,26:149-155. |
APA | Zhu, Honglin,Tan, Yanhu,Chen, Qiao,Wang, Lisha,Yao, Guanghua,&Cao, Haian.(2015).The effects of gas saturation on the acoustic velocity of carbonate rock.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,26,149-155. |
MLA | Zhu, Honglin,et al."The effects of gas saturation on the acoustic velocity of carbonate rock".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 26(2015):149-155. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论