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DOI: 10.1306/05141413123
Scopus ID: 2-s2.0-84919347047
Geomechanics of hydraulic fracturing microseismicity: Part 1. Shear, hybrid, and tensile events
Author: Busetti S.; Jiao W.; Reches Z.
Source Publication: AAPG Bulletin
ISSN: 0149-1585
EISSN: 1558-9315
Publishing Year: 2014
Date Published: 2014
Volume: 98, Issue:11
pages begin: 2439
pages end: 2457
Language: 英语
Scopus Keyword: Chemical activation ; Fracture ; Geomechanics ; Hydraulic fracturing ; Iterative methods ; Parameter estimation ; Population statistics ; Seismic waves ; Shale ; Fracture mapping ; Geomechanical behavior ; Microseismic events ; Natural fracture ; Plane orientation ; Selection criteria ; Source parameters ; Stimulation pattern ; Seismology ; fault plane ; fracture propagation ; geomechanics ; heterogeneity ; hydraulic fracture ; Mississippian ; seismicity ; tensile strength ; Texas ; United States
Subject of Scopus: Energy ; Earth and Planetary Sciences
English Abstract: We investigate the geomechanical behavior of hydraulicfracturing-induced microseismicity. Microseismic events are commonly used to discern stimulation patterns and hydraulic fracture evolution; however, techniques beyond fracture mapping are required to explain the mechanisms of microseismicity. In this series we present an approach to combine seismological and geomechanical techniques to investigate how microseismicity relates to propagating hydrofractures as well as existing natural fractures and faults. Part 1 describes the first analysis step, which is to characterize the microseismic events by their source parameters, focal mechanisms, and fault-plane orientations. These parameters are used to determine the mechanical conditions responsible for activation of discrete populations or subpopulations of microseismic events that then can be interpreted in their geological and operational context. First, we compare microseismic fault-plane populations from a Mississippian Barnett Shale, Texas data set that are determined using a traditional double-couple model (shear only) with a tensile source model (hybrid events), which may be more suitable for hydraulic fracturing conditions. Second, we employ a new method to distinguish fault planes from auxiliary planes using iterative stress inversion and critical stress (instability) selection criteria. The result is an enhanced microseismic characterization that includes geomechanical parameters such as slip tendency and local activation stress state during the operation. Using this approach on the Barnett Shale data, two microseismic fault sets are resolved: an inclined northeastsouthwest set with dominant shear, and a vertical north-south set with more hybrid behavior. The results are used in part 2 to further investigate the heterogeneity of the stimulations and to compare models for microseismic activation. Copyright © 2014. The American Association of Petroleum Geologists. All rights reserved.
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被引频次[WOS]:31   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Appears in Collections:过去全球变化的重建

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Busetti S.,Jiao W.,Reches Z.. Geomechanics of hydraulic fracturing microseismicity: Part 1. Shear, hybrid, and tensile events[J]. AAPG Bulletin,2014-01-01,98(11)
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