2018
DOI: 10.3390/pr6070096
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The Fracturing Behavior of Tight Glutenites Subjected to Hydraulic Pressure

Abstract: Tight glutenites are typically composed of heterogeneous sandstone and gravel. Due to low or ultra-low permeability, it is difficult to achieve commercial production in tight glutenites without hydraulic fracturing. Efficient exploitation requires an in-depth understanding of the fracturing behavior of these reservoirs. This paper provides a numerical method that integrates the digital image processing (DIP) technique into a numerical code rock failure process analysis (RFPA). This method could consider the gl… Show more

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Cited by 7 publications
(2 citation statements)
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“…The other types include microopen spaces (pores, vugs) and grain boundaries. Interestingly, Li et al [15] presented numerical simulations about impact of stress anisotropy in ultralow permeability sandstone reservoirs which have heterogeneous gravel conglomerates dispersed in otherwise finely grained sandstone, which is collectively called tight glutenites. It shows that a larger stress anisotropy promotes hydraulic fractures penetrating through the gavels to form a simpler fracture geometry [15].…”
Section: Discussionmentioning
confidence: 99%
“…The other types include microopen spaces (pores, vugs) and grain boundaries. Interestingly, Li et al [15] presented numerical simulations about impact of stress anisotropy in ultralow permeability sandstone reservoirs which have heterogeneous gravel conglomerates dispersed in otherwise finely grained sandstone, which is collectively called tight glutenites. It shows that a larger stress anisotropy promotes hydraulic fractures penetrating through the gavels to form a simpler fracture geometry [15].…”
Section: Discussionmentioning
confidence: 99%
“…In recent years, there have been some studies on the propagation characteristics of hydraulic fractures in heterogeneous reservoirs [37,38]. Li et al proposed a numerical method for constructing glutenite heterogeneity by embedding digital image technology (DIP) into a numerically coded rock failure process analysis to study the effect of gravel on hydraulic fracture propagation [39]. Tang et al established a two-dimensional numerical model based on the discrete element method to study the effects of permeability, gravel strength and stress difference on hydraulic fracture propagation in glutenite reservoirs [40].…”
Section: Introductionmentioning
confidence: 99%