Modeling of scale-dependent perforation geometrical fracture growth in naturally layered media

In this study, the discrete lattice simulation of multi-scale fracture growth in layered media is conducted and validated against fracturing laboratory observation and field micro-seismic monitoring. The results reveal that the perforation can substantially influence hydraulic fracture initiation an...

Full description

Saved in:
Bibliographic Details
Published in:Engineering geology 2024-07, Vol.336, p.107499, Article 107499
Main Authors: Zhang, Zhuo, Tang, Jizhou, Zhang, Jintao, Meng, Siwei, Li, Junlun
Format: Article
Language:English
Subjects:
Discrete lattice method
Geological hazard prevention
Interface debonding
Micro-seismic monitoring
Multiscale simulation
Naturally layered media
Perforation fracturing
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, the discrete lattice simulation of multi-scale fracture growth in layered media is conducted and validated against fracturing laboratory observation and field micro-seismic monitoring. The results reveal that the perforation can substantially influence hydraulic fracture initiation and extension. The vertically-oriented-perforation induced fracture will effectively initiate with moderate near-wellbore complexity, promoting fracture crossing at bedding interfaces. The interlaced design of perforation cluster can alleviate the stress shadow effect and facilitate uniform fracture propagation. The far-field fracture complexity are related to the bedding interfacial properties: more tensile interfaces tend to arrest induced fractures and restrict their vertical growth, while more fracturing fluid will be diverted into the permeable interfaces of lower shear strength. The complex fracture networks has the potential to trigger fault reactivation or serve as conduits for underground water, thus causing induce seismicity or aquifer contamination. The findings can enrich the understanding of multi-scale fluid-solid coupling mechanisms and further help us prevent geological hazards. •Complex fracture networks are sensitive to tensile and shear strength of bedding layers•Multiscale fracture growth models using discrete lattice method are validated against laboratory and field observation•Perforation geometry and arrangement can influence fracture initiation and extension, and interface slip mechanism
ISSN:0013-7952
1872-6917
DOI:10.1016/j.enggeo.2024.107499