The interplay between natural fractures and stress as controls to hydraulic fracture geometry in depleted reservoirs

Garcia-Teijeiro, Xavier; Rodriguez-Herrera, Adrian; Fischer, K.

doi:10.1016/j.jngse.2016.06.049

Cited by 11 publications

(2 citation statements)

References 7 publications

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“…The initial reservoirs pressure is 26.2 MPa and the bottom-hole pressure is 10.3 MPa. The parameters related the natural fractures are taken from [14,34] because they had not been reported in [6,33]. Other simulation parameters can be found in Table 3.…”

Section: Fec-dpm Model Validationmentioning

confidence: 99%

A Multi-Parameter Optimization Model for the Evaluation of Shale Gas Recovery Enhancement

et al. 2018

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Although a multi-stage hydraulically fractured horizontal well in a shale reservoir initially produces gas at a high production rate, this production rate declines rapidly within a short period and the cumulative gas production is only a small fraction (20-30%) of the estimated gas in place. In order to maximize the gas recovery rate (GRR), this study proposes a multi-parameter optimization model for a typical multi-stage hydraulically fractured shale gas horizontal well. This is achieved by combining the response surface methodology (RSM) for the optimization of objective function with a fully coupled hydro-mechanical FEC-DPM for forward computation. The objective function is constructed with seven uncertain parameters ranging from matrix to hydraulic fracture. These parameters are optimized to achieve the GRR maximization in short-term and long-term gas productions, respectively. The key influential factors among these parameters are identified. It is established that the gas recovery rate can be enhanced by 10% in the short-term production and by 60% in the long-term production if the optimized parameters are used. Therefore, combining hydraulic fracturing with an auxiliary method to enhance the gas diffusion in matrix may be an effective alternative method for the economic development of shale gas.

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Section: Fec-dpm Model Validationmentioning

confidence: 99%

A Multi-Parameter Optimization Model for the Evaluation of Shale Gas Recovery Enhancement

et al. 2018

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“…Zhao et al (2014); Dan et al (2015) investigated the sensitivity of each influencing factor due to the pattern of hydraulic fracture propagation when the process pipeline and shale lamination formed different angles. Taghichian et al (2014); Garcia-Teijeiro et al (2016); Ju et al Frontiers in Earth Science frontiersin.org 04 (2020) studied the cracking behaviors such as the approaching, shearing, penetrating, and steering of the hydraulic fractures caused by the induced stress in the crack tip. It has been pointed out that the mechanical parameters and brittleness difference resulting from the physical anisotropy of shale reservoir had a significant impact on the selection of fracturing block and optimization of hydraulic fracturing parameter (Rogers et al, 2010;Thomsen, 2013;Almutairi, 2014;Ghahfarokhi, 2017).…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the hydraulic fracture propagation of laminar argillaceous limestone continental shale

et al. 2023

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Laminar argillaceous limestone continental shale is an important oil reservoir in Jiyang Depression, Bohai Bay Basin of China. Affected by the laminar structure, the spatial propagation morphology of hydraulic fracturing is not clear. To reveal the propagation law of hydraulic fracturing pathway in laminar marl continental shale, the mineral content and basic rock mechanics test are firstly carried out on the cores from the wells in Jiyang Depression. Secondly the similar material cores with standard-size and large-size are manufactured and processed. Finally, combined with physical model experiments, acoustic emission and moment tensor inversion techniques, the hydraulic fracturing experiments on the large-size cores under different stress differences are conducted. The experimental results show that the in situ stress (confining stresses), laminar structure, and lithological distribution jointly affect the propagation mode of fractures. As the horizontal stress difference increases, the stimulated reservoir volume gradually decreases, and the number of shear fractures decreases accordingly. Macroscopically, the pump pressure curve shows obvious fluctuation in the case with lower horizontal stress difference, which is the external performance of hydraulic fracture initiation–obstruction–turning–penetrating–obstruction–turning. The content of brittle and plastic minerals has a significant impact on the fracture complexity, particularly the layers with high argillaceous content have a significant inhibitory effect on fracture propagation. The weakly cemented lamination or bedding plane is easy to capture the fracture and make it propagate along the bedding plane, thereby increasing the complexity of fracture network. The research results are expected to provide a theoretical reference for design and optimization of hydraulic fracturing parameter in continental shale oil exploration and development.

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A fully coupled fracture equivalent continuum-dual porosity model for hydro-mechanical process in fractured shale gas reservoirs

Liu

Wang

Gao

et al. 2019

Computers and Geotechnics

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The interplay between natural fractures and stress as controls to hydraulic fracture geometry in depleted reservoirs

Cited by 11 publications

References 7 publications

A Multi-Parameter Optimization Model for the Evaluation of Shale Gas Recovery Enhancement

A Multi-Parameter Optimization Model for the Evaluation of Shale Gas Recovery Enhancement

Experimental study on the hydraulic fracture propagation of laminar argillaceous limestone continental shale

A fully coupled fracture equivalent continuum-dual porosity model for hydro-mechanical process in fractured shale gas reservoirs

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