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Using Cohesive Zone Model to Simulate the Hydraulic Fracture Interaction with Natural Fracture in Poro-Viscoelastic Formation

Figure 8. Crack geometry in different fracturing fluid injection rate.

Using Cohesive Zone Model to Simulate the Hydraulic Fracture Interaction with Natural Fracture in Poro-Viscoelastic Formation The numerical procedure for hydraulically driven fracture propagation uses a poro-viscoelasticity theory to describe the fluid diffusion and matrix creep in the solid skeleton, in conjunction with pore-pressure cohesive zone model and ABAQUS was used

Numerical Simulation of Fracking in Shale Rocks: Current State and Future Approaches, PART 3

Fig. 15 Configurational force crack (from [129])

8.1 Definitions The peridynamics formulation was first developed by Silling [248], where he tried to overcome the limitation of current theories dealing with discontinuity, such as in fracture mechanics problems. The main argument was that the difficulty of existing theories was due to the presence of partial derivatives in the formulation

Numerical Simulation of Fracking in Shale Rocks: Current State and Future Approaches

Fig. 1 Fracking example

The anisotropy of shale depends significantly on the scale at which the problem is tackled (nano, micro or macroscale), suggesting that a multiscale model would be appropriate. Moreover, propagation of hydraulic fractures in such a complex medium can be difficult to model with current numerical discretisation methods. The crack propagation

2D Numerical Simulation of Improving Wellbore Stability in Shale Using Nanoparticles Based Drilling Fluid

Figure 24. SEM pictures of the shale. (a) Original shale magnified by 2400 times; (b) Shale contacted with nano-SiO2 in PTT magnified by 2400 times; (c) Original shale magnified by 30,000 times; and (d) Shale contacted with nano-SiO2 in PTT magnified by 30,000 times.

The mechanisms of NP in reducing permeability and stabilizing shale are also discussed. Results showed that fluid filtrate from water-based drilling fluid had a strong tendency to invade the shale matrix and increase the likelihood of wellbore instability in shales. However, the pore fluid pressure near wellbore areas could be

Numerical simulation study on miscible EOR techniques for improving oil recovery in shale oil reservoirs

Fig. 15 Effect of the injected gas on oil viscosity (molar diffusion mechanism is OFF). a Natural gas, b CO2

Firstly, numerical simulation methods of compositional models have been incorporated with local grid refinement of hydraulic fractures to mimic the performance of these miscible gases in shale reservoirs conditions. Implementation of a molecular diffusion model in the LS-LR-DK (logarithmically spaced, locally refined, and dual permeability) model has been also conducted.

Numerical Simulation Research on Gas-Solid Two Phase Flow in Oil Shale Circulating Fluidized Bed

Oil shale circulating fluidized bed combustion technology is a new technology and it is the most economical and efficient combustion way for using Oil shale resources. Nnumerical simulation of CFB is very important in the prediction of its flow behavior.

Numerical Simulation Research on Gas-Solid Two Phase Flow in Oil Shale Circulating Fluidized Bed   Qing Wang1,Jun-tao Feng1,Bai-zhong Sun1,Yong-qing Qi2,Deng-feng Chen2,Jin-long Luo1 1.Northeast Dianli University, Jilin, Jilin Province, China-2. Daqing Oilfield Limited Company, Daqing City, Chin Abstract Oil shale circulating fluidized bed combustion technology is a new technology and it is the most economical and

The Research of Gas Flooding of Horizontal Well with SRV in Tight Oil Reservoir

The characteristics of tight oil reservoir are low porosity and ultra-low permeability, thus stimulated reservoir volume (SRV) should be conducted whether applying the mode of vertical wells or horizontal wells production.

The Research of Gas Flooding of Horizontal Well with SRV in Tight Oil Reservoir   Xiaoliang Zhao*, Xinwei Liao and Huan Wang China University of Petroleum-Beijing, China Abstract The characteristics of tight oil reservoir are low porosity and ultra-low permeability, thus stimulated reservoir volume (SRV) should be conducted whether applying the mode of vertical wells

Numerical simulation of hydraulic fracturing and associated microseismicity using finite-discrete element method

Hydraulic fracturing (HF) technique has been extensively used for the exploitation of unconventional oil and gas reservoirs. HF enhances the connectivity of less permeable oil and gas-bearing rock formations by fluid injection, which creates an interconnected fracture network and increases the hydrocarbon production.

Numerical simulation of hydraulic fracturing and associated microseismicity using finite-discrete element method Qi Zhaoa, Andrea Lisjakb, Omid Mahabadib, Qinya Liuc, Giovanni Grassellia a-Department of Civil Engineering, University of Toronto, Toronto, ON, Canada. b-Geomechanica Inc., Toronto, ON, Canada. c-Department of Physics, University of Toronto, Toronto, ON, Canada Abstract Hydraulic fracturing (HF) technique has been extensively

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