Shale gas reservoir characterisation: A typical case in the southern Sichuan Basin of China

Chen, Shangbin; Zhu, Yanming; Wang, Hongyan; Liu, Honglin; Wei, Wei; Fang, Junhua

doi:10.1016/j.energy.2011.09.001

Cited by 385 publications

(243 citation statements)

References 11 publications

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“…2). The Lower Silurian shale, widely developed in the Upper Yangtze Platform, has recently been selected as the main target for shale gas exploration and development (Chen et al, 2011Tan et al, 2014;Ji et al, 2015Ji et al, , 2016Jiang et al, 2016;Liu et al, 2016;Tang et al, 2016;Yang et al, 2016a,b,c). The Silurian shales occur in some strongly uplifted areas as outcrops, which indicates that the shales have experienced a complicated tectonic evolution, then influencing the gas content (Hao et al, 2013).…”

Section: Geological Setting and Samplesmentioning

confidence: 99%

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Quantitative characterization of micropore structure for organic-rich Lower Silurian shale in the Upper Yangtze Platform, South China: Implications for shale gas adsorption capacity

Chen

Jiang

Liu

et al. 2017

Adv. Geo-Energ. Res.

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The pores in shales are mainly of nanometer-scale, and their pore size distribution is very important for shale gas storage and adsorption capacity, especially micropores having widths less than 2 nm, which contribute to the main occurrence space for gas adsorption. This study is focused on the organic-rich Lower Silurian black shale from four wells in the Upper Yangtze Platform, and their total organic carbon (TOC), mineralogical composition and micropore characterization were investigated. Low pressure CO2 adsorption measurement was conducted at 273.15 K in the relative pressure range of 0.0001-0.03, and the micropore structure was characterized by Dubinin-Radushkevich (DR) equation and density functional theory (DFT) method and then the relationship between micropore structure and shale gas adsorption capacity was discussed. The results indicated that (1) The Lower Silurian shale have high TOC content in the range of 0.92-4.96%, high quartz content in the range of 30.6-69.5%, and high clays content in the range of 24.1-51.2%. The TOC content shows a strong positive relationship with the quartz content which suggests that the quartz is mainly biogenic in origin. (2) The micropore volume varies from 0.12 cm 3 /100 g to 0.44 cm 3 /100 g and micropore surface area varies from 4.97 m 2 /g to 17.94 m 2 /g. Both of them increase with increasing TOC content, indicating TOC is the key factor to control the micropore structure of the Lower Silurian shale. (3) Low pressure CO2 adsorption measurement provides the most suitable detection range (0.3-1.5 nm) and has high reliability and accuracy for micropore structure characterization. (4) The TOC content is the key factor to control gas adsorption capacity of the Lower Silurian shale in the Upper Yangtze Platform.

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Section: Geological Setting and Samplesmentioning

confidence: 99%

“…Shale is a kind of dense rocks with extremely low porosity and permeability (Chen et al, 2011(Chen et al, , 2016Du et al, 2015;Wei et al, 2016a). However, natural gas can be stored as free gas or adsorbed gas in the nanoscale pores of shale reservoirs (Gasparik et al, 2014;Ji et al, 2015Ji et al, , 2016Li et al, 2015a).…”

Section: Introductionmentioning

confidence: 99%

Quantitative characterization of micropore structure for organic-rich Lower Silurian shale in the Upper Yangtze Platform, South China: Implications for shale gas adsorption capacity

Chen

Jiang

Liu

et al. 2017

Adv. Geo-Energ. Res.

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“…In the past few years, Chinese geologists have shown increasing interest in the composition and gas potential of shales (Chen et al, 2011;Han et al, 2013;Wang et al, 2013), and shale gas was licensed as a new type of mineral resource by the Chinese Government in 2011 to accelerate the exploration of shale gas. The reported results from China have exclusively focused on the very old marine shales from South China, e.g.…”

Section: Introductionmentioning

confidence: 99%

The composition and its impact on the methane sorption of lacustrine shales from the Upper Triassic Yanchang Formation, Ordos Basin, China

Guo

Jia

Peng

et al. 2014

Marine and Petroleum Geology

142

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“…The source rock is mainly depending on the estimation of total organic content and level of maturity of source rock and done through the geochemical sedimentological methods. The organic content in the source rock has specific velocity, density and resistivity characteristics which affect log and seismic responses [6]. Thus source-shales and hence shale-gas reservoirs can be characterized through logs and seismic.…”

Section: Shale Gas Reservoir Characterizationmentioning

confidence: 99%

Shale Gas Characterization of Sembar Formation, Khipro Area, Pakistan

Khan¹,

Bibi²

2016

IJG

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This study pertains to the evaluation of shale gas and rock physics properties of this area with respect to its total organic content of Sember Formation, Khiproarea, Pakistan. We use well logs data for this study. The Khipro area is prominent in the Lower Indus Basin for its hydrocarbon (oil and gas) structural traps. In shale gas evaluation, TOC of Sember Formation is estimated. The analysis has been done with the help of the wire line data of the well Bilal North-01. The presence of shale gas in the study area is analyzed with the help of different techniques. Rock physics and petrophysical analysis have been done in order to get the properties of the area related to the shale gas evaluation.

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Shale gas reservoir characterisation: A typical case in the southern Sichuan Basin of China

Cited by 385 publications

References 11 publications

Quantitative characterization of micropore structure for organic-rich Lower Silurian shale in the Upper Yangtze Platform, South China: Implications for shale gas adsorption capacity

Quantitative characterization of micropore structure for organic-rich Lower Silurian shale in the Upper Yangtze Platform, South China: Implications for shale gas adsorption capacity

The composition and its impact on the methane sorption of lacustrine shales from the Upper Triassic Yanchang Formation, Ordos Basin, China

Shale Gas Characterization of Sembar Formation, Khipro Area, Pakistan

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