Investigation of Fault Permeability in Sands with Different Mineral Compositions (Evaluation of Gas Hydrate Reservoir)

Kimura, Sho; Kaneko, Hiroaki; Ito, Takuma; Minagawa, Hideki

doi:10.3390/en8077202

Cited by 16 publications

(8 citation statements)

References 37 publications

(57 reference statements)

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“…In order to investigate particle breakage qualitatively, the shear-zone samples after the shear test were removed for the grain-size analysis. The grain-size distribution was determined using the laser diffraction method because the samples were too small to sieve 30 . The test result shows that the proportions of clay, silt, and sand after the fast shearing at 30 mm/min were 12.5%, 45.6%, and 41.9%, respectively.…”

Section: Discussionmentioning

confidence: 99%

Effect of over-consolidation and shear rate on the residual strength of soils of silty sand in the Three Gorges Reservoir

Yin

Glade³

et al. 2017

Sci Rep

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Estimation of the residual strength of the soil on the landslide sliding surface is essential for analyzing reactivated landslides. This study investigated the influence of over-consolidation ratio (OCR) and shear rate on the residual strength of SM-type (silty sand) landslide soils in the Three Gorge Reservoir using ring shear tests under drained conditions. A series of ring shear tests were conducted to measure the drained residual strength under over-consolidation ratios of 1–12 and shear rates of 0.06–30.00 mm/min. Test results showed that residual strengths of SM-type landslide soils were not affected significantly by the over-consolidation process. The effect of shear rate on residual strength did not exhibit a regular pattern at shear rates of 0.06–10.00 mm/min, and behaved negatively at a high shear rate of 30 mm/min. The reduction in residual strength at higher shear rates may be attributable to increases in the water content of the shear zone and the amount of finer particles, due to particle breakage and/or larger grains being pushed from the shear zone.

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Section: Discussionmentioning

confidence: 99%

Effect of over-consolidation and shear rate on the residual strength of soils of silty sand in the Three Gorges Reservoir

Yin

Glade³

et al. 2017

Sci Rep

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“…Bryant et al [9] investigated the permeability changes due to the consolidation of fine-grained marine sediments in various depths and introduced empirical relations to estimate the permeability from the void ratio. Morrow et al [10], Arch and Maltman [11], Zhang and Cox [12], Crawford et al [13], and Kimura et al [14,15] investigated the effect of shearing on the permeability in order to find out permeability behavior of faults and gouge materials.…”

Section: Introductionmentioning

confidence: 99%

“…Another type of study focuses on soil permeability changes during exerted shear strain. e main methods employed in this regard are ring shear [14,18,30], rotary shear [31], and shear of a thin layer sample [10,12,13,32].…”

Section: Introductionmentioning

confidence: 99%

A Conceptual Model and Evaluating Experiments for Studying the Effect of Soil Deformation on Its Permeability

Enayat

Shoaei

Nikudel

2021

Shock and Vibration

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Soil structure and void ratio are the major factors that control the permeability changes during soil deformation. In this research, we proposed and tested a conceptual model considering these two factors based on the concept of permeability anisotropy. This model, which is expressed as k(e) graph, determines the total k values that soil can achieve and shows that as deformation proceeds, soil permeability passes through a specific zone in the k(e) graph. Thus, by deforming a soil sample, measuring its permeability during deformation, and comparing the results using the k(e) graph, it might be possible to predict deformation effects on the permeability. To evaluate this conceptual model, we designed and built a special apparatus to carry out two sets of experiments. The first set was performed to achieve the k(e) graph during static compression based on the conceptual model; and the second set was conducted to investigate the permeability changes relative to k(e) graph during simple shear deformation in constant volume condition. Our results show that the theoretical k(e) graph agrees more with the measured k(e) graph in medium to dense samples that might have no macropore. In addition, particles’ preferential orientation and/or anisotropic permeability were not changed during shear deformation due to three possible causes: deformation done in constant volume deformation, relatively low shear strain, and shearing along particle orientation. Void ratio and particle orientation are associated with each other, and soil shearing with constant void ratio might cause the anisotropy of permeability to be relatively constant. Thus, it is needed to design and build a new complex apparatus or use a special method for testing how permeability changes within the k(e) graph zone during soil deformation.

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“…The result showed that the oil production rate was highly correlated with the fault permeability case, while the recovery factor was highest in the intermediate fault case. However, when the fault becomes less permeable, the production and the recovery factor decreased rapidly (Manzocchi et al 2008;Houwers et al 2015;Flodin and Durlofsky 2001;Kimura et al 2015;Wenning et al 2018), while Rotevatn and Fossen (2011) focused on evaluation of the subseismic fault element on the hydrocarbon exploration and production. The production and pressure data set obtained was simulated.…”

Section: Introductionmentioning

confidence: 99%

The study of the effect of fault transmissibility on the reservoir production using reservoir simulation—Cornea Field, Western Australia

Abdullah

Hasan

Saeid

et al. 2019

J Petrol Explor Prod Technol

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The focused area in this study is in the Cornea Field located in the Yampi Shelf, north-eastern Browse Basin, Australia. The field was stated to be an elongated unfaulted drape anticline over highly eroded basement. From the literature and seismic data, faults die at the basement in the Cornea Field. Therefore, no faults were considered previously. The tectonic activity was not apparent in the area with only deformation by gravitational movements and compaction in the basement zone. However, fault might present in the reservoir and seal depth as time passed. Therefore, the aim of this study is to simulate the Cornea field with faults, to determine the effect of fault transmissibility on oil production. The study shows that the fault permeability and fault displacement thickness ratio have a close relationship with fault transmissibility. The fault transmissibility increases when fault permeability and fault displacement thickness ratio increase. Transmissibility multiplier was also considered in this study. The fault transmissibility increases with the increase in transmissibility multiplier, thus the oil production. This study contributes to the gap present in the research of the Cornea Field with fault structure, where it is important to consider fault existence during exploration and production.

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Investigation of Fault Permeability in Sands with Different Mineral Compositions (Evaluation of Gas Hydrate Reservoir)

Cited by 16 publications

References 37 publications

Effect of over-consolidation and shear rate on the residual strength of soils of silty sand in the Three Gorges Reservoir

Effect of over-consolidation and shear rate on the residual strength of soils of silty sand in the Three Gorges Reservoir

A Conceptual Model and Evaluating Experiments for Studying the Effect of Soil Deformation on Its Permeability

The study of the effect of fault transmissibility on the reservoir production using reservoir simulation—Cornea Field, Western Australia

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