An experimental and analytical study of the effects of shear displacement, fluid type, joint roughness, shear strength, friction angle and dilation angle on proppant embedment development in tight gas sandstone reservoirs

Tang, Yunlong; Ranjith, P.G.

doi:10.1016/j.ijrmms.2018.03.008

Cited by 23 publications

(8 citation statements)

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“…Proppant embedment may lead to conductivity loss in siltstones of 78.42%, in mudstones of 81.89%, in conglomerates of 91.55% and in shales of 78.05% (Bandara, Ranjith and Rathnaweera 2019). The mineral composition and mechanical characteristics of the formation significantly impact embedment and resulting permeability loss (Tang and Ranjith 2018, Reinicke et al 2010, Cai et al 2014. When saturated by CO 2 , swelling (induced by CO 2 adsorption in the rock matrix) increases embedment by a factor of 1.84-1.93 (∆b 3 /∆b 1 ), schematically illustrated in Fig.…”

Section: Embedment and Swelling Induced By Co 2 Adsorptionmentioning

confidence: 99%

Review of fundamental studies of CO2 fracturing: Fracture propagation, propping and permeating

Hou

Sheng

Elsworth

et al. 2021

Journal of Petroleum Science and Engineering

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Section: Embedment and Swelling Induced By Co 2 Adsorptionmentioning

confidence: 99%

Review of fundamental studies of CO2 fracturing: Fracture propagation, propping and permeating

Hou

Sheng

Elsworth

et al. 2021

Journal of Petroleum Science and Engineering

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“… 7 However, some mechanisms can lead to the reduction of fracture conductivity, such as fine migration, 7 proppant diagenesis, 8 proppant crushing, 9 − 12 and proppant embedment, 12 , 13 which is defined as proppant particles being embedded into the rock mass under pressure, causing a reduction in the fracture width and conductivity. 14 Therefore, it is of vital importance to investigate fracture conductivity after hydraulic fracturing.…”

Section: Introductionmentioning

confidence: 99%

Influence of Proppant Size on the Proppant Embedment Depth

et al. 2022

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Hydraulic fracturing is a well stimulation technique involving the fracturing of bedrock formations by a pressurized liquid, in which proppants are added to keep the fracture open after the fracturing operation. The scale discrepancy between the rock specimen and the proppant may bring deviations in the analysis of proppant embedment depth if the fluid-deteriorated formation is treated as an isotropic medium. This study tries to uncover the origins of these deviations through numerical and analytical analyses. The fluid-deteriorated formation is first modeled as a layered rock to obtain equivalent elastic parameters under isotropic conditions. Then, the equivalent parameters are used in the numerical modeling of proppant embedment. The numerical simulations indicate that the simplification of the fluid-deteriorated formation into an isotropic rock results in an underestimation of the proppant embedment depth, and this deviation increases with the scale contrast between rock specimens and proppants. Hertz contact theory is utilized to explain this deviation. As a promising technique, the nano/micro-indentation is also proposed to depict the fluid-deterioration effect along the depth. This study provides methods for the calibration of mechanical parameters of fluid-deteriorated rocks in the analysis of proppant embedment.

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“…Less clarity is available for CO2 flow in propped fractures, where additional complexity is added with grain-fracture interactions to CO2. Previous work has focussed on grainfracture interactions to evaluate permeability loss by embedment under various conditions of closure 2 stress, mineral composition, reservoir temperature and fracturing fluids (Arshadi, Zolfaghari, Piri, Al-Muntasheri, & Sayed, 2017;Kewen Li, 2015;Tang & Ranjith, 2018). Impacts of CO2-matrix interaction (such as swelling) are relatively less prominent, especially for shales because of their lower organic contents.…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of tripartite permeability evolution for supercritical CO2 in propped shale fractures

Hou

Elsworth

2021

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An experimental and analytical study of the effects of shear displacement, fluid type, joint roughness, shear strength, friction angle and dilation angle on proppant embedment development in tight gas sandstone reservoirs

Cited by 23 publications

References 50 publications

Review of fundamental studies of CO2 fracturing: Fracture propagation, propping and permeating

Review of fundamental studies of CO2 fracturing: Fracture propagation, propping and permeating

Influence of Proppant Size on the Proppant Embedment Depth

Mechanisms of tripartite permeability evolution for supercritical CO2 in propped shale fractures

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