Experimental Study of Adsorption Effects on Shale Permeability

Zhao, Yu; Wang, Chaolin; Zhang, Yongfa; Liu, Qiang

doi:10.1007/s11053-019-09476-7

Cited by 44 publications

(22 citation statements)

References 59 publications

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“…Figure 7 shows the schematic sketch of the PPD technique. [28][29][30][31] The sample is first in equilibrium and then opens the valve between the upstream chamber and the sample as well as the valve between the sample and the downstream chamber to let fluid flowing from the upstream chamber to the downstream chamber through the sample driven by the pressure difference. The axial permeability can then be estimated from the pressure pulse decay curve (the upstreamdownstream pressure difference with time) using mathematical solutions of the related flow problem.…”

Section: Comparison Between Cdt Results and Ppd Resultsmentioning

confidence: 99%

“…Experimental permeabilities obtained from CDT tests (A) for the vertical sample. Experimental permeabilities obtained from CDT tests (B) for the horizontal sampleF I G U R E 7The schematic sketch of the pressure pulse decay technique [28][29][30][31]. The sample is first in equilibrium and then opens the valve between the upstream chamber and the sample to let fluid flowing from the upstream chamber to the downstream chamber through the sample driven by the pressure difference…”

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confidence: 99%

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A method for simultaneously determining axial permeability and transverse permeability of tight reservoir cores by canister degassing test

Zhao

Wang

2019

Energy Science & Engineering

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Permeability anisotropy of shale and tight gas reservoirs is critical for applications in unconventional gas recovery, but laboratory measurements are still limited. This paper presents an experimental method for determining permeability anisotropy of shale and tight reservoirs. The method uses gas production data from a canister and an analytical solution of continuity equation in anisotropic core sample. Axial permeability and transverse permeability of the core are estimated by matching experimental data with analytical solution. The proposed method is verified by comparing with true values and calculated values through numerical simulations that cover variations in rock permeability. The method is applied to real data measured in canister degassing tests (CDT) involving two different directional shale core samples. Then, the experimental results are compared with the results from pulse pressure decay (PPD) method. Both the verification from numerically calculated results and the comparison between PPD results and CDT results exhibit the practicality of the proposed method. At last, the effects of permeability anisotropy, porosity, initial gas pressure, rock dimensions, and adsorption on the profiles of gas production are investigated.

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Section: Comparison Between Cdt Results and Ppd Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

A method for simultaneously determining axial permeability and transverse permeability of tight reservoir cores by canister degassing test

Zhao

Wang

2019

Energy Science & Engineering

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“…The test ends when the upstream‐downstream pressure difference becomes very small. The sample permeability can then be determined from the pressure difference data using mathematical solutions of the related flow problem …”

Section: Laboratory Experimental Analysismentioning

confidence: 99%

“…The schematic sketch of the pressure pulse decay technique. The sample is first in equilibrium and then opens the valve between the upstream chamber and the sample to let fluid flowing from the upstream chamber to the downstream chamber through the sample driven by the pressure difference…”

Section: Laboratory Experimental Analysismentioning

confidence: 99%

Permeability model of fractured rock with consideration of elastic‐plastic deformation

Zhao

Wang

2019

Energy Science & Engineering

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The evolution of rock permeability has been studied exhaustively, and a broad array of permeability models has been proposed. These models are normally derived under the assumption of elastic deformation when subjected to external stress. Under this assumption, these models define fracture permeability as a function of either gas pressure or effective stress. However, experimental observations indicate that rock fracture may experience unrecoverable deformation during the loading process. The goal of this study is to resolve this contradiction. In this study, derivation of fracture permeability correlation for elastoplastic contact of rough surfaces is presented. The proposed method for describing permeability evolution not only considers the topography of fracture surfaces but also and, more importantly, integrates the plastic deformation of rock fracture. Subsequently, the deformation and permeability change of shale sample containing a single rough‐walled fracture is experimentally investigated. The results show that the permeabilities obtained during the loading process are larger than the permeabilities obtained during the unloading process under the same stress conditions and that the fracture deformation cannot be fully recovered during the unloading process. At last, the proposed permeability model is applied to the experimental results and it is shown that the proposed model can predict the laboratory permeability data.

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“…Permeability growth rate versus volume ratio for different ratios of apparent porosity to true porosity(Zhao, Wang, Zhang, & Liu, 2019).…”

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confidence: 99%

Experimental setup for CO2 injection for Enhance Shale Gas Recovery (ESGR) - A Review

Kumar¹,

N²,

Rajesther³

2020

IJERT

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Approach of Carbon capture and sequestration (CCS) and injection in shale formation in order to maximize methane recovery by CO2 adsorption and simultaneously storing anthropogenic gas in subsurface making the whole process as carbonneutral(subjecting carbon from where it has originally come from). Environmental degradation and energy crises could be stopped by developing innovative shale gas production methods. This article reviews published literature on an experimental setup for shale gas recovery by the adsorption/desorption mechanism of carbon dioxide and methane gas on shale rock. Complete knowledge of carbondioxide sorption mechanism and characterization on shale rock with technical aspects discussed in this article. Data stated by published information on an experimental setup reviewed on the basis of different adsorption isotherms on distinct shale samples from all over the globe. Geological specifications such as TOC, porosity/permeability, moisture content, shrinkage/swelling and flow behavior as crucial conditions for CH4, CO2, and N2 gas adsorption in shale discussed. Effects of injecting gases on petrophysical properties of shale rock. Supercritical CO2 influence on natural gas recovery from shale gas reservoir and methodology.

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Experimental Study of Adsorption Effects on Shale Permeability

Cited by 44 publications

References 59 publications

A method for simultaneously determining axial permeability and transverse permeability of tight reservoir cores by canister degassing test

A method for simultaneously determining axial permeability and transverse permeability of tight reservoir cores by canister degassing test

Permeability model of fractured rock with consideration of elastic‐plastic deformation

Experimental setup for CO2 injection for Enhance Shale Gas Recovery (ESGR) - A Review

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