Studies of Hydraulic Fracture-Propagation Behavior in Presence of Natural Fractures: Fully Coupled Fractured-Reservoir Modeling in Poroelastic Environments

Rahman, Mohammad Mustafizur; Rahman, M. S.

doi:10.1061/(asce)gm.1943-5622.0000274

Cited by 53 publications

(25 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yu et al (2014) performed a sensitivity study of gas production for a shale gas well with different geometries of multiple transverse hydraulic fractures. Olson et al (2009) and Rahman and Rahman (2013) investigated fracture propagation behavior in the presence of natural fractures. Chen (2012) has applied the cohesive element method to modeling viscosity-dominated hydraulic fractures.…”

Section: Introductionmentioning

confidence: 99%

Optimal spacing of staged fracturing in horizontal shale-gas well

LIU

Liu

Zhang

et al. 2015

Journal of Petroleum Science and Engineering

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Optimal spacing of staged fracturing in horizontal shale-gas well

LIU

Liu

Zhang

et al. 2015

Journal of Petroleum Science and Engineering

View full text Add to dashboard Cite

“…Many models in early stages, such as the PK model [7], PKN model [8], KGD mode [9], pseudo-3D models, and planar-3D models [10,11], can only be used in simulating the propagation of fractures with highly idealized geometries. Some traditional methods, such as the finite difference method [12], finite element method [13], extended finite element method [14][15][16], discrete element method [17], have been used in the simulation of fracture network in recent years, but are computationally demanding and are ill-conditioned [17] for the fluid-rock coupling process of hydraulic fracturing. Different from these traditional methods, meshless methods [18][19][20] are free from meshing and with capability to deal with moving boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis on the Stability of Hydraulic Fracture Propagation

Zhang

et al. 2015

Energies

View full text Add to dashboard Cite

Abstract:The formation of dense spacing fracture network is crucial to the hydraulic fracturing treatment of unconventional reservoir. However, one difficulty for fracturing treatment is the lack of clear understanding on the nature of fracture complexity created during the treatment. In this paper, fracture propagation is numerically investigated to find the conditions needed for the stable propagation of complex fracture network. Firstly, starting from a parallel fracture system, the stability of fracture propagation is analyzed and a dimensionless number M is obtained. Then, by developing a hydraulic fracturing simulation model based on displacement discontinuity method, the propagation of parallel fractures is simulated and a clear relation between M and the stability of parallel fractures is obtained. Finally, the investigation on parallel fractures is extended to complex fracture networks. The propagation of complex fracture networks is simulated and the results show that the effects of M on complex fracture networks is the same to that of parallel fractures. The clear relation between M and fracture propagation stability is important for the optimization of hydraulic fracturing operation.

show abstract

“…Being different with the traditional methods, which need grid meshing for rock matrix, such as the finite difference method [15], the finite element method [16], the extended finite element method [17][18][19] the discrete element method [20,21], the cracking particles method [22,23], etc., the fractures are treated as the discontinuities of displacements, and grid meshing is needed only for fractures. Most of the problems mentioned above have been properly resolved.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Permeability of the Hydraulic-Stimulated Fracture Network in Naturally-Fractured Shale Gas Reservoirs

Zhang

2016

Water

View full text Add to dashboard Cite

Abstract:As hydraulic fracturing is a fluid-rock coupling process, the permeability of the hydraulic-stimulated fracture network in the initial stage has great effects on the propagation of the hydraulic fracture network in the following stages. In this work, the permeability of the hydraulic-stimulated fracture network in shale gas reservoirs is investigated by a newly-proposed model based on the displacement discontinuity method. The permeability of the fracture network relies heavily on fracture apertures, which can be calculated with high precision by the displacement discontinuity method. The hydraulic fracturing processes are simulated based on the natural fracture networks reconstructed from the shale samples in the Longmaxi formation of China. The flow fields are simulated and the permeability is calculated based on the fracture configurations and fracture apertures after hydraulic fracturing treatment. It is found that the anisotropy of the permeability is very strong, and the permeability curves have similar shapes. Therefore, a fitting equation of the permeability curve is given for convenient use in the future. The permeability curves under different fluid pressures and crustal stress directions are obtained. The results show that the permeability anisotropy is stronger when the fluid pressure is higher. Moreover, the permeability anisotropy reaches the minimum value when the maximum principle stress direction is perpendicular to the main natural fracture direction. The investigation on the permeability is useful for answering how the reservoirs are hydraulically stimulated and is useful for predicting the propagation behaviors of the hydraulic fracture network in shale gas reservoirs.

show abstract

Studies of Hydraulic Fracture-Propagation Behavior in Presence of Natural Fractures: Fully Coupled Fractured-Reservoir Modeling in Poroelastic Environments

Cited by 53 publications

References 43 publications

Optimal spacing of staged fracturing in horizontal shale-gas well

Optimal spacing of staged fracturing in horizontal shale-gas well

Numerical Analysis on the Stability of Hydraulic Fracture Propagation

Numerical Study on the Permeability of the Hydraulic-Stimulated Fracture Network in Naturally-Fractured Shale Gas Reservoirs

Contact Info

Product

Resources

About