3D lattice modeling of hydraulic fracture initiation and near-wellbore propagation for different perforation models

Huang, Litang; Liu, Jianjun; Zhang, Fengshou; Fu, Haifeng; Zhu, Hehua; Damjanac, Branko

doi:10.1016/j.petrol.2020.107169

Cited by 72 publications

(30 citation statements)

References 42 publications

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“…The gap between nodes is defined as a pipe, which is used to calculate the micro flow of fluid and act the fluid pressure on the rock matrix. At the same time, the deformation of the matrix will cause a change in pore pressure and pore diameter [23,24].…”

Section: Simulation Methodsmentioning

confidence: 99%

“…When the stress of the spring between nod strength, it breaks and forms cracks. The gap between nodes is defined as is used to calculate the micro flow of fluid and act the fluid pressure on th At the same time, the deformation of the matrix will cause a change in por pore diameter [23,24]. The change in normal force and tangential force of the spring can be the relative displacement of the node, that is [25]:…”

Section: Simulation Methodsmentioning

confidence: 99%

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Multi-Fracture Synchronous Propagation Mechanism of Multi-Clustered Fracturing in Interlayered Tight Sandstone Reservoir

Tian

Yan

Jin³

et al. 2022

Sustainability

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A numerical model was established by using the 3D lattice method to investigate the synchronous propagation mechanism of multiple clusters of hydraulic fractures in interlayered tight sandstone reservoirs in the Songliao Basin in China. The multi-fracture synchronous propagation model under different geological factors and fracturing engineering factors was simulated. The results show that the vertical stress difference, interlayer Young’s modulus, and lithologic interface strength are positively correlated with the longitudinal propagation ability of multiple hydraulic fractures. The three clusters of hydraulic fractures can have adequate longitudinal extension capacity and transverse propagation range with 15 m cluster spacing and a 12 m3/min pumping rate. The viscosity of the fracturing fluid is positively correlated with the ability of hydraulic fracture to penetrate the interlayer longitudinally but negatively correlated with the transverse propagation length. It is recommended that high viscosity fracturing fluid is used in the early stage of multi-clustered fracturing in interlayered tight sandstone reservoirs to promote hydraulic fractures to penetrate more interlayers and communicate more pay layers in the longitudinal direction, and low viscosity fracturing fluid in the later stage to make multiple clusters of fractures propagate to the far end where possible and obtain a more ideal SRV.

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Section: Simulation Methodsmentioning

confidence: 99%

Section: Simulation Methodsmentioning

confidence: 99%

Multi-Fracture Synchronous Propagation Mechanism of Multi-Clustered Fracturing in Interlayered Tight Sandstone Reservoir

Tian

Yan

Jin³

et al. 2022

Sustainability

View full text Add to dashboard Cite

show abstract

“…As discussed above, numerous modelling approaches have been applied in hydraulic fracturing simulation, which keeps attracting more research efforts [152,171,309,317,360,372] and such new techniques as reduce order modelling [59] and genetic algorithms [181] are gaining attention. Some other potential numerical approaches are discussed in [158].…”

Section: Summary Of Diverse Numerical Approaches In Hydraulic Fracturing Simulationmentioning

confidence: 99%

A Review of Hydraulic Fracturing Simulation

Chen

Dias

Sun

et al. 2021

Arch Computat Methods Eng

122

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Along with horizontal drilling techniques, multi-stage hydraulic fracturing has improved shale gas production significantly in past decades. In order to understand the mechanism of hydraulic fracturing and improve treatment designs, it is critical to conduct modelling to predict stimulated fractures. In this paper, related physical processes in hydraulic fracturing are firstly discussed and their effects on hydraulic fracturing processes are analysed. Then historical and state of the art numerical models for hydraulic fracturing are reviewed, to highlight the pros and cons of different numerical methods. Next, commercially available software for hydraulic fracturing design are discussed and key features are summarised. Finally, we draw conclusions from the previous discussions in relation to physics, method and applications and provide recommendations for further research.

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“…Bai et al [15] investigated hydraulic fracturing from oriented perforations at the microscale using hydro mechanical hybrid finite-discrete element method (FDEM) and it was found the perforation orientation, differential stress, and injection rate significantly affect the breakdown pressure and hydraulic fracture geometry. Huang et al [16] simulated 3D lattice modeling of hydraulic fracturing initiation and near-wellbore propagation based on different perforation models, and the results showed that the perforation tunnels guide the generation of initial microcracks at the roots of the perforation tunnels once the injection starts; however, the subsequent fracture propagation is controlled by the relative locations of perforation tunnels and the stress interference among different perforation tunnels. It could be concluded that both joint plane and oriented perforation can contribute to the fracture network generation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Hydraulic Fracture Network Formation of Jointed Shale with Oriented Perforation

Men

Wang

2022

Mathematical Problems in Engineering

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This paper aims at exploring the fracture evolution as well as capturing the fracture network formation of jointed shale during hydraulic fracturing process by numerical simulation using the Rock Failure Process Analysis System of Flow (RFPA—Flow). The simulations were successfully completed following two stages. In the first stage, a series of simulations are performed to investigate the influence of different angle-oriented perforations on fracture initiation and propagation. The simulation results agreed well with the experimental results confirming the validity of the RFPA-Flow code in the application. In the second stage, extensive hydraulic fracturing simulations on jointed shale with different angled-joint planes and different angle-oriented perforations were performed. The simulation results demonstrated that the fracture evolution changes significantly as the magnitude of α (the angle between perforation and the joint plane) increased. It was found that a large α value could lead to a larger the tensile stress region around the fracture tip resulting in more joint planes pulled apart. It could also induce more secondary fractures and hence a more complex fracture could be formed. As a result, the α value of 60° to 90° were found to aid in the fracture network generation. On the other hand, the angle β being the angle between the parallel joints and the maximum stress direction was another important factor in fracture evolution. Its influence on fracturing performance was similar to angle α. It was found that the initiation and breakdown pressure of jointed shale were in proportional to the magnitude of angle β. Therefore, this paper introduced an efficient approach to promote the formation of a complex fracture network in jointed shale with the presence of oriented perforation, which could offer valuable guidance for the design of unconventional reservoir reconstruction.

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3D lattice modeling of hydraulic fracture initiation and near-wellbore propagation for different perforation models

Cited by 72 publications

References 42 publications

Multi-Fracture Synchronous Propagation Mechanism of Multi-Clustered Fracturing in Interlayered Tight Sandstone Reservoir

Multi-Fracture Synchronous Propagation Mechanism of Multi-Clustered Fracturing in Interlayered Tight Sandstone Reservoir

A Review of Hydraulic Fracturing Simulation

Numerical Investigation of Hydraulic Fracture Network Formation of Jointed Shale with Oriented Perforation

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