A Fully Coupled 3D Finite Element Investigation of Hydraulic Fracture Growth in Elastoplastic Rocks

2016 ◽  
Author(s):  
Elias Pirayesh ◽  
Mohamed Y. Soliman ◽  
Stephen M. Morse ◽  
Hossein Emadi
Keyword(s):  
Finite Element ◽  
Hydraulic Fracture ◽  
3D Finite Element ◽  
Fully Coupled ◽  
Fracture Growth

A Fully Coupled 3D Finite Element Simulator for Staged Hydraulic Fracturing in Horizontal Wells

2020 ◽  
Author(s):  
Siwei Meng ◽  
Jinqing Bao ◽  
Chenxu Yang ◽  
Wei Cheng ◽  
Guangming Zhang
Keyword(s):  
Finite Element ◽  
Hydraulic Fracturing ◽  
Horizontal Wells ◽  
3D Finite Element ◽  
Element Simulator ◽  
Fully Coupled

Fully Coupled 3-D Hydraulic Fracture Growth in the Presence of Weak Horizontal Interfaces

2017 ◽  
Author(s):  
Ghazal Izadi ◽  
Daniel Moos ◽  
Leonardo Cruz ◽  
Michael Gaither ◽  
Laura Chiaramonte ◽  
...  
Keyword(s):  
Hydraulic Fracture ◽  
Fully Coupled ◽  
Fracture Growth

A Cohesive-Zone Model for Simulating Hydraulic-Fracture Evolution within a Fully Coupled Flow/Geomechanics-Simulation System

SPE Journal ◽  
2020 ◽  
pp. 1-22
Author(s):  
Faruk O. Alpak
Keyword(s):  
Hydraulic Fracture ◽  
Cohesive Zone ◽  
Cohesive Zone Model ◽  
Real Life ◽  
Simulation System ◽  
Zone Model ◽  
Fracture Evolution ◽  
Propagation Criterion ◽  
Fully Coupled ◽  
Fracture Growth

Summary A modular multiphysics reservoir-simulation system is developed that has the capability of simulating multiphase/multicomponent/thermal flow, poro-elasto/plastic geomechanics, and hydraulic-fracture evolution. The focus of the work is on the full-physics hydraulic-fracture-evolution-simulation capability of the multiphysics simulation system. Fracture-growth computations use a cohesive-zone model as part of the computation of fracture-propagation criterion. The cohesive-zone concept is developed using energy-release rates and cohesive stresses. They capture the strain-softening behavior of deforming porous material consistent with real-life observations of poro-plastic deformation. Thus, they can be reliably used within both poro-elastic and poro-plastic geomechanics applications, unlike the conventional stress-intensity-factor-based fracture-propagation criterion. The partial-differential equations (PDEs) that govern the Darcy-scale multiphase/multicomponent/thermal flow, poro-elasto/plastic geomechanics, hydraulic-fracture evolution, and laminar channel flow in the fracture are tightly coupled to each other to give rise to a numerical protocol solvable by the fully implicit method. The ensuing nonlinear system of equations is solved by use of a novel adaptively damped Newton-Raphson method. Example fully coupled single-phase isothermal-flow, geomechanics, and hydraulic-fracture-growth simulations are analyzed to demonstrate the predictive power of the simulation system. Numerical-model predictions of fracture length/radius and width are validated against analytical solutions for plane-strain and ellipsoid-shaped fractures, respectively. Results indicate that the simulation system is capable of modeling hydraulic-fracture evolution accurately by use of the cohesive-zone model as the propagation criterion. We also simulate and explore the sensitivities around a real-life hydraulic-fracture-growth problem by fully accounting for the thermal-, multiphase-, and compositional-flow effects.

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