Global Geology 2016, 19(2) 85-94 DOI:     ISSN: 1673-9736 CN: 22-1371/P

Current Issue | Archive | Search                                                            [Print]   [Close]
论文
Information and Service
This Article
Supporting info
PDF(579KB)
[HTML]
Reference
Service and feedback
Email this article to a colleague
Add to Bookshelf
Add to Citation Manager
Cite This Article
Email Alert
Keywords
shale
horizontal fractures
reflector model
propagator matrix method
AVO
Authors
LIU Xiwu
DONG Ning and GUO Zhiqi
PubMed
Article by Liu X
Article by Dong NAGZ

Rock physics and seismic modeling of shale reservoirs with horizontal fractures

LIU Xiwu, DONG Ning and GUO Zhiqi

1. SinoPEC Exploration & Production Research Institute,Beijing 100083,China; 2. SinoPEC Key Laboratory of Shale Oil/Gas Exploration and Production Technology,Beijing 100083,China; 3. National Key Laboratory of Corporation of Shale Oil/Gas Enrichment Mechanism and Effective Development,SinoPEC, Beijing 100083,China; 4. College of Geo- Exploration Science and Technology,Jilin University,Changchun 130026,China

Abstract

The presence of horizontal fractures enhances seismic anisotropy of shales. Calculation based on the effective medium theory indicates that horizontal fractures have little effects on velocities along the direction pa- rallel to fractures, but can significantly reduce velocities along the direction normal to fractures. Seismic respon- ses of shales with horizontal fractures are calculated based on the reflector model and the anisotropic propagator matrix method,in which the reflections are a combination of the contrast in impedance due to the variations in fracture density,anisotropic propagation of waves within the shales,and the tuning and interferences associated with layer thickness. Calculated results indicate that seismic reflections are sensitive to reservoir layer thickness and fracture density. Anisotropic propagation alters amplitudes and phases of reflections. It corresponds to high- er reflection amplitudes for the case of surrounding sandstone with higher velocity because the increase in frac- ture density increases the contrast in impedance between the shale and sandstone. In contrast,the surrounding sandstone with lower velocity corresponds to lower reflection amplitudes for the increase in fracture density.

Keywords shale   horizontal fractures   reflector model   propagator matrix method   AVO  
Received  Revised  Online:  
DOI:
Fund
Corresponding Authors:
Email:
About author:

References:
Similar articles
1.WANG Yongchun,ZHONG Linshan,ZHAO Han and WU Qiong . Geoid interpolation in Gongzhuling City and the 1cm quasi geoid reffnement 
 
[J]. Global Geology, 2024,27(4): 207-215
2.QIN Tao,FANG Jie,ZHANG Yanlong,DING Xin,YU Guanying and YANG Hao . Geochronology and geochemistry of Daerlong granitic complex in Linkou area, eastern Heilongjiang: petrogenesis and tectonic implications 
 
[J]. Global Geology, 2024,27(4): 177-195
3.LI SiJia,SHEN YanJie and QIAN Ye . Research on rock hand specimen naming method based on deep learning and Inception-v3 model 
 
[J]. Global Geology, 2024,27(4): 196-206
4.LI Zizhuo, LIU Yunhe* and REN Xiuyan . 3D time-domain forward modeling of airborne transient electromagnetism considering superparamagnetic effect 
 
[J]. Global Geology, 2024,27(4): 216-232
5.DU Meng,MAO Weijian,YANG Maoxin and ZHAO Jianzhi . Migration images guided high-resolution velocity modeling based on fully convolutional neural network [J]. Global Geology, 2024,27(3): 145-153
6.WEI Laonao, LIU Yunhe* and ZHANG Bo . UAV-based transient electromagnetic 3D forward modeling and inversion and analysis of exploration capability [J]. Global Geology, 2024,27(3): 154-166
7.Kovalenko S. V. 1,Kezina T. V. 2*,Kryuchko E. I. 1 and Mironov M. A. 1 . Preliminary results of lithological and palynological study of Svobodny, ancient man’s parking relic in Amur region, Russia [J]. Global Geology, 2024,27(3): 121-131
8.ZHANG Xinrong,WANG Jiayu,PING Shuaifei and LI Yaran . Changes of grain size from peat proffle in eastern mountainous area over past 2000 years, Jilin Province, Northeast China [J]. Global Geology, 2024,27(3): 132-144
9. CHEN Xuanning, HAN Fuxing, GAO Zhenghui *,SUN Zhangqing and HAN Jiangtao . Horizontal-to-vertical spectral ratio inversion method based on multimodal forest optimization algorithm[J]. Global Geology, 2024,27(3): 167-176
10.GUAN Yue,YU Yinghua,ZHANG Yaxiong and YUAN Hongqi . Characteristics of geological structures in Shiling and Zhuanshanhu areas of Yehe Uplift, NE China [J]. Global Geology, 2024,27(2): 105-120
11.NWABUEZE Ekene Chibuike,LIANG Chenyue,SONG Zhiwei,ZHAO jiaqi,ENEZE Florence Ego and ZHENG Changqing. Deformation characteristics of granitic rocks in Erguna ductile shear zone, NE China[J]. Global Geology, 2024,27(2): 63-75
12. LI Yonggang and YAN Bo . Facies logging identiffcation of intermediate-basic volcanic rocks in Huoshiling Formation of Songliao Basin[J]. Global Geology, 2024,27(2): 93-104
13.LI Meihui,ZHENG Changqing and LIANG Chenyue . Metamorphic P-T conditions and zircon U-Pb ages of amphibolite in Laojinchang area, southern Jilin Province[J]. Global Geology, 2024,27(2): 76-92
14.JIA Zhenyang,LI Gang and FENG Fan . Numerical simulation of formation mechanism of unloading joints in granitic pluton[J]. Global Geology, 2024,27(1): 35-42
15.ZHENG Chao,WANG Yanlong,ZHANG Baohui and DU Lizhi . Application of transient Rayleigh wave in detection of tunnel lining void area [J]. Global Geology, 2024,27(1): 56-62

Copyright by Global Geology