التفاصيل البيبلوغرافية
| العنوان: |
Sensitivity Analysis of Seismic Velocity and Attenuation Variations for Longmaxi Shale during Hydraulic Fracturing Testing in Laboratory. |
| المؤلفون: |
Hongyu Zhai, Xu Chang, Yibo Wang, Ziqiu Xue, Xinglin Lei, Yi Zhang |
| المصدر: |
Energies (19961073); Sep2017, Vol. 10 Issue 9, p1393, 16p |
| مصطلحات موضوعية: |
SEISMIC wave velocity, ATTENUATION (Physics), SHALE gas, HYDRAULIC fracturing, ULTRASONIC waves |
| مستخلص: |
During the hydraulic fracturing procedure in shale-gas exploitation, the poroelastic properties of shale formation can be altered significantly. However, it is difficult to evaluate these variations using microseismic field data. In this study, we conduct a hydro-fracturing experiment using Longmaxi shale, which is a major formation for shale-gas production in China, to simulate the water injection and rock fracturing procedure. The variation of the velocity and attenuation for primary/secondary (P/S) ultrasonic waves was investigated throughout the entire experimental procedure. The results show that the attenuation is more sensitive to sample rupture than the velocity. However, P-wave attenuation loses sensitivity to the water injection after the fractures are saturated with water. In that case, it is preferable to use S-wave attenuation to identify the opening/closing of the fractures. Based on the experimental results, we can conclude that the variation of the attenuation must be considered during microseismic data processing and interpretation. [ABSTRACT FROM AUTHOR] |
|
Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder