Coring-Induced Fractures: Indicators of Hydraulic Fracture Propagation in a Naturally Fractured Reservoir

1988 ◽  
Author(s):  
S.E. Laubach ◽  
E.R. Monson
Keyword(s):  
Hydraulic Fracture ◽  
Fracture Propagation ◽  
Fractured Reservoir ◽  
Naturally Fractured Reservoir ◽  
Naturally Fractured ◽  
Hydraulic Fracture Propagation ◽  
Induced Fractures

Hydraulic-Fracture Propagation in a Naturally Fractured Reservoir

2011 ◽  
Vol 26 (01) ◽  
pp. 88-97 ◽  
Author(s):  
Dmitry A. Chuprakov ◽  
Anna V. Akulich ◽  
Eduard Siebrits ◽  
Marc Thiercelin
Keyword(s):  
Hydraulic Fracture ◽  
Fracture Propagation ◽  
Fractured Reservoir ◽  
Naturally Fractured Reservoir ◽  
Naturally Fractured ◽  
Hydraulic Fracture Propagation

Hydraulic Fracture Propagation in a Naturally Fractured Reservoir

2010 ◽  
Author(s):  
Dmitry A. Chuprakov ◽  
Anna Akulich ◽  
Eduard Siebrits ◽  
Marc J. Thiercelin
Keyword(s):  
Hydraulic Fracture ◽  
Fracture Propagation ◽  
Fractured Reservoir ◽  
Naturally Fractured Reservoir ◽  
Naturally Fractured ◽  
Hydraulic Fracture Propagation

scholarly journals Numerical Investigation of Hydraulic Fracture Propagation Based on Cohesive Zone Model in Naturally Fractured Formations

Processes ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 28 ◽  
Author(s):  
Jianxiong Li ◽  
Shiming Dong ◽  
Wen Hua ◽  
Xiaolong Li ◽  
Xin Pan
Keyword(s):  
Hydraulic Fracturing ◽  
Hydraulic Fracture ◽  
Cohesive Zone ◽  
Coupled Model ◽  
Fracture Propagation ◽  
Fracture Network ◽  
Zone Model ◽  
Naturally Fractured ◽  
Hydraulic Fracture Propagation ◽  
Multiple Cluster

Complex propagation patterns of hydraulic fractures often play important roles in naturally fractured formations due to complex mechanisms. Therefore, understanding propagation patterns and the geometry of fractures is essential for hydraulic fracturing design. In this work, a seepage–stress–damage coupled model based on the finite pore pressure cohesive zone (PPCZ) method was developed to investigate hydraulic fracture propagation behavior in a naturally fractured reservoir. Compared with the traditional finite element method, the coupled model with global insertion cohesive elements realizes arbitrary propagation of fluid-driven fractures. Numerical simulations of multiple-cluster hydraulic fracturing were carried out to investigate the sensitivities of a multitude of parameters. The results reveal that stress interference from multiple-clusters is responsible for serious suppression and diversion of the fracture network. A lower stress difference benefits the fracture network and helps open natural fractures. By comparing the mechanism of fluid injection, the maximal fracture network can be achieved with various injection rates and viscosities at different fracturing stages. Cluster parameters, including the number of clusters and their spacing, were optimal, satisfying the requirement of creating a large fracture network. These results offer new insights into the propagation pattern of fluid driven fractures and should act as a guide for multiple-cluster hydraulic fracturing, which can help increase the hydraulic fracture volume in naturally fractured reservoirs.

scholarly journals Adaptive Finite Element-Discrete Element Analysis for Microseismic Modelling of Hydraulic Fracture Propagation of Perforation in Horizontal Well considering Pre-Existing Fractures

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Yongliang Wang ◽  
Yang Ju ◽  
Yongming Yang
Keyword(s):  
Finite Element ◽  
Hydraulic Fracture ◽  
Horizontal Well ◽  
Numerical Models ◽  
Fracture Propagation ◽  
Discrete Element ◽  
Hydraulic Fractures ◽  
Adaptive Finite Element ◽  
Naturally Fractured ◽  
Hydraulic Fracture Propagation

Hydrofracturing technology of perforated horizontal well has been widely used to stimulate the tight hydrocarbon reservoirs for gas production. To predict the hydraulic fracture propagation, the microseismicity can be used to infer hydraulic fractures state; by the effective numerical methods, microseismic events can be addressed from changes of the computed stresses. In numerical models, due to the challenges in accurately representing the complex structure of naturally fractured reservoir, the interaction between hydraulic and pre-existing fractures has not yet been considered and handled satisfactorily. To overcome these challenges, the adaptive finite element-discrete element method is used to refine mesh, effectively identify the fractures propagation, and investigate microseismic modelling. Numerical models are composed of hydraulic fractures, pre-existing fractures, and microscale pores, and the seepage analysis based on the Darcy’s law is used to determine fluid flow; then moment tensors in microseismicity are computed based on the computed stresses. Unfractured and naturally fractured models are compared to assess the influences of pre-existing fractures on hydrofracturing. The damaged and contact slip events were detected by the magnitudes, B-values, Hudson source type plots, and focal spheres.

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