Applying complex fracture model and integrated workflow in unconventional reservoirs

Weng, Xiaowei; Kresse, Olga; Chuprakov, Dimitry; Cohen, C.; Prioul, Romain; Ganguly, Utpal

doi:10.1016/j.petrol.2014.09.021

Cited by 135 publications

(35 citation statements)

References 53 publications

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“…An unconventional fracture model (UFM) has recently been developed (Weng et al, 2014), which has special features to simulate fracture propagation, rock deformation, fluid flow, and proppant transport simultaneously during fracturing treatments. Compared to conventional planar fracture models, UFM is able to simulate the interaction of hydraulic fractures with pre-existing natural fractures and to consider the interaction among hydraulic fracture branches by computing the ''stress shadow'' effect on each fracture exerted by the adjacent fractures.…”

Section: Unconventional Fracture Modelmentioning

confidence: 99%

Efficient production estimation for a hydraulic fractured well considering fracture closure and proppant placement effects

Lee

Park

Shin

et al. 2016

Energy Exploration & Exploitation

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It is important to accurately estimate performances of a hydraulic fractured well, because it will be utilized to evaluate various completion parameters and furthermore to establish a future development plan. Shale gas reservoirs with fracture networks have high initial production rates but show drastic production decline as reservoirs are depleted by production. One of the reasons behind this phenomenon is an increased effective stress during production resulting in fracture closures. Gas mainly flows through hydraulic and natural fracture networks, so the fracture closures cause permeability reduction in the flow areas. In typical hydraulic fracturing operations, proppants are injected with fracturing fluid and placed in the fracture networks. Proppants play a crucial role to keep an induced hydraulic fracture open and retain a well productivity. However, only small portion of the fracture networks are filled with proppants (propped fracture) and the rest exist without proppants (unpropped fracture). Therefore, fracture closures of these regions are quite different. In this article, we have investigated to identify the combined effect of fracture closure and proppant placement on production estimation of a shale gas well. A numerical model has been developed to mimic well performances in Horn River Basin, BC, Canada. We have used pressure-dependent correlations based on experiments to consider fracture permeability alteration with changing reservoir pressure. Proppant placements are described using a fracture propagation model and this enables to classify a whole reservoir into sub regions such as propped, unpropped fracture, and matrix. By comparing with different cases, this article shows that reasonable results on gas production estimation are accomplished when considering fracture closure and proppant placement effects together.

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Section: Unconventional Fracture Modelmentioning

confidence: 99%

Efficient production estimation for a hydraulic fractured well considering fracture closure and proppant placement effects

Lee

Park

Shin

et al. 2016

Energy Exploration & Exploitation

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“…Successful characterizations of flow and contaminant transport in fractured geologic formations depend on adequate descriptions of complex geometrical structures, which comprise a wide variety of fractures and their connections (Ahmed et al, 2015;Pichot et al, 2012;Weng et al, 2014). The fracture characteristics can be quantified by using various statistical parameters, including the fracture orientation, length, shape, and permeability alongside the fracture intensity and 25 connectivity (Bonnet et al, 2001;Botros et al, 2008;Bour et al, 2002;Koike et al, 2015;Stephens et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Advanced 3D DFN approaches typically include procedures of fracture generation, DFN meshing, and flow and transport or particle tracking (de Dreuzy et al, 2013;Erhel et al, 2009;Hyman et al, 2014;Pichot et al, 2012;Xu and Dowd, 2010;Zhang, 2015). Particle tracking algorithms are usually preferred to simulate DFN transport 5 and have recently been widely implemented to evaluate the time resistance of contaminants for fractured formations (Hyman et al, 2015a;Hyman et al, 2015b;Makedonska et al, 2015;Painter et al, 2008;Stalgorova and Babadagli, 2015;Wang and Cardenas, 2015). The objective of the Lagrangian approach is to avoid numerical difficulties in solving the advection dispersion equation (ADE) in complex DFN domains.…”

Section: Introductionmentioning

confidence: 99%

Stochastic modeling of flow and conservative transport in threedimensional discrete fracture networks

Lee¹,

Ni²,

Lin³

et al. 2018

Preprint

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“…Hamidi and Mortazavi (2014) used distinct element method for simulating the initiation and propagation of threedimensional hydraulically induced fractures. Weng et al (2014) presented a complex fracture network model that simulates hydraulic fracture networks created during the stimulation treatment and proppant placement. Ding et al (2014) investigated hydraulic fractured wells with improved coarse grid techniques for computational efficiency in practically applications.…”

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

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Applying complex fracture model and integrated workflow in unconventional reservoirs

Cited by 135 publications

References 53 publications

Efficient production estimation for a hydraulic fractured well considering fracture closure and proppant placement effects

Efficient production estimation for a hydraulic fractured well considering fracture closure and proppant placement effects

Stochastic modeling of flow and conservative transport in threedimensional discrete fracture networks

Optimal spacing of staged fracturing in horizontal shale-gas well

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