DOI: 10.1306/02011211011
Scopus记录号: 2-s2.0-84866869322
论文题名: Damage and plastic deformation of reservoir rocks: Part 2. propagation of a hydraulic fracture
作者: Busetti S. ; Mish K. ; Hennings P. ; Reches Z.
刊名: AAPG Bulletin
ISSN: 0149-1739
EISSN: 1558-9469
出版年: 2012
发表日期: 2012
卷: 96, 期: 9 起始页码: 1711
结束页码: 1732
语种: 英语
Scopus关键词: Borehole effects
; Damage propagation
; Differential stress
; Dynamic solutions
; Elastic-Plastic
; Far-field stress
; Finite element simulations
; Fracture complexity
; Geometric complexity
; Hydraulic fracture
; Injection pressures
; Internal fracture
; Reservoir rock
; Stress state
; Treelike networks
; Vertical fracture
; Elasticity
; Elastoplasticity
; Hydraulic fracturing
; Rheology
; Fracture
; borehole
; complexity
; damage
; elastoplasticity
; fracture propagation
; numerical model
; plastic deformation
; reservoir rock
; rheology
; stress analysis
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: The aim of part 2 is to understand the development of complex hydraulic fractures (HFs) that are commonly observed in the field and in experiments but are not explained by most models. Our approach uses finite element simulations and a numerical rheology developed in part 1 to model damage fracturing, the fracturing process by damage propagation in a rock with elastic-plastic damage rheology. Using this rheology and a dynamic solution technique, we investigate the effect of far-field stresses and pressure distribution in the fracture on the geometric complexity of the fractures. The model is for the vertical propagation of an HF segment into an overlying bed located far from borehole effects. The layer is 2.3 m (7.5 ft) tall, has elastic-plastic damage rheology, and contains a 0.3-m (l-ft)-tall initial vertical fracture. Vertical and horizontal tectonic loads of 50 MPa (7252 psi) and 10 to 45 MPa (1450-6527 psi) are established, and then an internal fracture pressure of 10 MPa/s (1450 psi/s) is applied until the layer fails. The simulated fracturing is sensitive to the stress state and generated patterns range from single straight fractures to treelike networks. Reducing differential stress increases the injection pressure required to fracture and promotes off-plane damage, which increases fracture complexity. Consecutive periods of nonuniform weakening followed by unstable rupture generate multiple branches and segments. Copyright © 2012. The American Association of Petroleum Geologists. All rights reseverd. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84866869322&doi=10.1306%2f02011211011&partnerID=40&md5=98f5b263f6fd7b113ccfe29c584f50ca
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13309
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Busetti S.,Mish K.,Hennings P.,et al. Damage and plastic deformation of reservoir rocks: Part 2. propagation of a hydraulic fracture[J]. AAPG Bulletin,2012-01-01,96(9)