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Shale Oil Reservoir Characteristics and Enrichment in the ...

The reservoir space types are rich in the shale, in which, the laminated fractures, recrystallization intracrystalline pores and organic pores are high-quality reservoir spaces. The shale oil enrichment is mainly determined by the hydrocarbon-producing potential and reservoir capacity.

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Seven types of reservoir space, including structural tension fracture, structural shear fracture, interlayer lamellation fracture, pyrite pore, the inter-crystal micro-pore and micro-crack in clay mineral, the edge micro-crack around quartz grains and organic matter pore, were found in the Wufeng–Longmaxi shale.

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Lithofacies types and sedimentary environment of shale in ...

Lithofacies types and sedimentary environment of shale in Wufeng-Longmaxi Formation, Sichuan Basin: Zhao Jianhua 1, Jin Zhijun 2, Jin Zhenkui 1, Wen Xin 1, Geng Yikai 1, Yan Caina 3, Nie Haikuan 2: 1. College of Geosciences, China University of Petroleum, Beij, China; 2.

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Differences between Marine and Terrestrial Shale Gas ...

You have free access to this content Differences between Marine and Terrestrial Shale Gas Accumulation: Taking Longmaxi Shale Sichuan Basin and Yanchang Shale Ordos Basin as Examples

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Seven types of reservoir space, including structural tension fracture, structural shear fracture, interlayer lamellation fracture, pyrite pore, the inter-crystal micro-pore and micro-crack in clay mineral, the edge micro-crack around quartz grains and organic matter pore, were found in the Wufeng–Longmaxi shale.

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Shale lithofacies and reservoir space of the Wufeng ...

Five lithofacies, i.e. carbonaceous shale, siliceous shale, silty shale, calcareous shale and ordinary shale, were identified in the Wufeng–Longmaxi shale. Seven types of reservoir space ...

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(1) Organic pores with bigger pore sizes that could reach μm in the Longmaxi shale are well-developed in migrated organic matter rather than in in situ organic matter, which are the dominant reservoir spaces. However, organic pores in the Niutitang shale have lower amounts and sizes, commonly lower than 30 nm with more complicated pore structures.

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Characteristics of shale lithofacies formed under ...

Characteristics of shale lithofacies formed under different hydrodynamic conditions in the Wufeng-Longmaxi Formation, Sichuan Basin: Wang Zhifeng 1, Zhang Yuanfu 1, Liang Xueli 2, Cheng Fei 2, Jin Qihu 2, Liu Wei 2, Zhang Haibo 1, Li Haipeng 1: 1. School of Energy Resources, China University of Geosciences, Beij, China; 2.

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Sedimentary facies of marine shale gas formations in ...

Sedimentary facies is an important factor influencing shale gas accumulation. It not only controlls hydrocarbon generation, but also affects reservoir characteristics and distribution. This paper discusses the Lower Silurian Longmaxi Formation in the south of the Sichuan Basin. Outcrop, core ...

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Characteristics of black shale in the Upper Ordovician ...

The black shale in the Wufeng and the lower part of Longmaxi formations is 50 m thick, with an average organic carbon content (TOC) of 3.81 wt% and a maturity (Ro) of 1.62%.

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Shale Gas Potential of the Major Marine Shale Formations ...

The marine black shale formations on the Upper Yangtze Platform, South China, are currently exploration targets for shale gas. Here, we report on the mineralogy, lithofacies, petrophysics, and rock mechanics of samples collected from the Ediacaran (Upper Sinian), Lower Cambrian, and Lower Silurian black shale intervals.

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Characteristics of shale lithofacies and reservoir space ...

Cite this article: Liang Chao,Jiang Zaixing,Yang Yiting and Wei Xiaojie. Characteristics of shale lithofacies and reservoir space of the Wufeng–Longmaxi Formation, Sichuan Basin[J]. , 2012, 39(6): 0.

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Shale lithofacies and reservoir space of the Wufeng ...

Seven types of reservoir space, including structural tension fracture, structural shear fracture, interlayer lamellation fracture, pyrite pore, the inter-crystal micro-pore and micro-crack in clay mineral, the edge micro-crack around quartz grains and organic matter pore, were found in the Wufeng–Longmaxi shale.

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A lithology identification method for continental shale ...

The Dongying Depression and Jiyang Depression of the Bohai Bay Basin consist of continental sedimentary facies with a variable sedimentary environment and the shale layer system has a variety of lithologies and strong heterogeneity.

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Fracture Characteristics and Change of Permeability Under ...

An improved comprehension of the structure of these shale plays can lead to improved shale gas producibility. Gas is produced through natural fractures (NFs) and through hydraulically induced fractures, together creating the so-called stimulated reservoir volume (SRV).

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Elements and gas enrichment laws of sweet spots in shale ...

Shale gas usually occurs in shale formations (including shale formation, interlayers and adjacent strata) in free and sorbed states, with source rock and reservoir in the same bed [5e7]. Shale gas reservoirs are characterized by low porosity and low permeability, and show diverse regional distribution,

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Major controlling factors for the high-quality shale of ...

Research on major controlling factors of the high-quality shale in Upper Ordovician Wufeng–Lower Silurian Longmaxi Formation is a major subject. Based on the information of outcrops and drilling data acquired from Southern Sichuan combined with geochemical elemental analysis and biostratigraphy, this paper analyzed the sedimentary characteristics of Wufeng–Longmaxi organic-rich shale in ...

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Organoporosity Evaluation of Shale: A Case Study of the ...

The Lower Silurian Longmaxi Shale in southeast Chongqing was selected as a case to confirm the contribution of organopores (microscale and nanoscale pores within organic matters in shale) formed by hydrocarbon generation to total volume of hydrocarbons in shale gas reservoir.

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Another reason is the thermo-tectonic activities of the Qiyue Mountain Fault at the east boundary of the Sichuan Basin during the Yanshan and Himalayan Epochs. The high geothermal anomalies in the Jiaoshiba Shale Area is beneficial to the recovery ratio of shale gas because high temperature can promote desorption rate.

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The genesis of quartz in WufengLongmaxi gas shales,Sichuan ...

Abstract: In order to analyze the genesis of quartz in gas shale and its effect on the reservoir quality,shales of the WufengLongmaxi Formations in the southeastern part of Sichuan Basin are taken as a research object.Based on Xdiffraction analysis,scanning electron microscope combined with cathode luminescence (CL),energy spectrum analysis and major elements test,detrital quartz and ...

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“Sweet Spot” Identification and Optimization in ...

Spots in Shale Gas Reservoir: Case Study of the Longmaxi Fm in Changning Block, Sichuan Basin Longmaxi\ Sichuan Natural Gas Industry, B3, 2016, pp 201 . X X X X X X X X X X X . Sahoo, et. al. Reservoir Characterization of Eagle Ford Shale through Lithofacies Analysis for Identifcation

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Application of a lithofacies model to characterise the gas ...

Shale lithofacies and reservoir space of the Wufeng–Longmaxi Formation, Sichuan Basin, China. Petrol Explor Develop. 39(6): 736 – 743 . doi: 10.1016/S 3804(12) 6 [Google Scholar] ). This classification scheme can result in a complex name, which is …

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Geochemistry and sedimentology of the Lower Silurian ...

Shale lithofacies and reservoir space of the Wufeng-Longmaxi formation, Sichuan Basin, China Liang, C.; Jiang, Z.; Yang, Y.; Wei, X. Geochemistry and magmatic history of eclogites and ultramafic rocks from the Chinese continental scientific drill hole: subduction and ultrahigh-pressure metamorphism of lower crustal cumulates

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Jiang Zaixing, Guo Ling, Liang Chao. Lithofacies and sedimentary characteristics of the Silurian Longmaxi shale in the southeastern Sichuan Basin, China[J]. Journal of Paleogeography, 2013,2(3): 251. [60] Tonglou Guo. Evaluation of highly thermally mature shale-gas reservoirs in complex structural parts of the Sichuan Basin[J].

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Permeability anisotropy and gas slippage of shales from ...

Permeability anisotropy (Ap) and gas slippage of shales are critical for shale gas exploration, but laboratory measurements are still limited. We investigated composition, pore structure, permeability anisotropy and gas slippage of the Longmaxi and Wufeng shales from the Sichuan Basin in South China.

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Characteristics of shale lithofacies and reservoir space ...

Characteristics of shale lithofacies and reservoir space of the Wufeng–Longmaxi Formation,Sichuan Basin Liang Chao,Jiang Zaixing,Yang Yiting,Wei Xiaojie(School of Energy Resources,China University of Geosciences,Beij,China)

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Lithofacies types and sedimentary environment of shale in ...

Lithofacies types and sedimentary environment of shale in Wufeng-Longmaxi Formation, Sichuan Basin: Zhao Jianhua 1, Jin Zhijun 2, Jin Zhenkui 1, Wen Xin 1, Geng Yikai 1, Yan Caina 3, Nie Haikuan 2: 1. College of Geosciences, China University of Petroleum, Beij, China; 2.

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Quantitative seismic prediction technique of marine shale TOC and its application:A case from the Longmaxi Shale Play in the Jiaoshiba area, Sichuan Basin . ... Characteristics of the shale lithofacies and reservoir space of the Wufeng-Longmaxi Formation, Sichuan Basin [J].

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Prospect Analysis of Shale Gas Resource Exploration in the ...

Longmaxi shale sedimentary environment is stable, high shale thickness and stable distribution, good quality source rocks and high brittle mineral content, which has meet the basic parameters of shale gas exploration and development, and has a large shale gas exploration potential in study area.

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Characteristics of black shale in the Upper Ordovician ...

Shale gas reservoir characterisation: ... Nano-scale pore structure and fractal dimension of organic-rich Wufeng-Longmaxi shale from Jiaoshiba area, Sichuan Basin: ... Lithofacies types of the Wufeng–Longmaxi formations in the Sichuan Basin and its peripheral area. Display Table.

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Integrated Geophysical Technologies for Unconventional ...

Characteristics of shale lithofacies and reservoir space of the Wufeng-Longmaxi Formation, Sichuan Basin: Petroleum exploration and development, 2012, 39(6): 691–698. Liu Shugen. The oil and gas formation mechanism of the up-per Sinian to Cambrian strata in Sichuan Basin: Exploration Southern Company, Sinopec, 2009.

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Shale gas reservoir characteristics of Ordovician-Silurian ...

Abstract. The characteristics of a shale gas reservoir and the potential of a shale gas resource of Ordovician–Silurian age in the north of the central Yangtze area were determined.

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In addition to the reservoir space contributed by framboidal pyrite to the reservoir, the favorable conditions of organic matter preservation under reducing environments provided a basis for the study of high-quality reservoir formation mechanism and the prediction of high-quality reservoirs.

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Increasing Shale Gas Recovery through Thermal Stimulation ...

The Silurian Longmaxi shale gas play in the Jiaoshiba (JSB) structure in the southeast margin of the Sichuan Basin in China is studied to discuss the key factors that control the adsorption/desorption behavior of natural gas in shale formations.

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Xianglu Tang, Zhenxue Jiang, Hexin Huang, et al. Lithofacies characteristics and its effect on gas storage of the Silurian Longmaxi Marine Shale in the southeast Sichuan Basin, China. Journal of Natural Gas Science and Engineering, 2016, 28: 346.

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The lithofacies and reservoir characteristics of the Upper ...

The lithofacies and reservoir characteristics of the Upper Ordovician - Marine and Petroleum Geol...

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Longmaxi-Wufeng Shale lithofacies identification and D ...

Shale Lithofacies D modeling using the probability trend model for the Longmaxi-Wufeng Shale in Fuling Gas Field: (a) a D view of the shale lithofacies model with a surface and edge, and (b) a fence view of the shale lithofacies model.

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Characteristics of black shale in the Upper Ordovician ...

The black shale in the Wufeng and the lower part of Longmaxi formations is 50 m thick, with an average organic carbon content (TOC) of 3.81 wt% and a maturity (Ro) of 1.62%.

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Application of a lithofacies model to characterise the gas ...

Shale lithofacies and reservoir space of the Wufeng–Longmaxi Formation, Sichuan Basin, China. Petrol Explor Develop. 39(6): 736 – 743 . doi: 10.1016/S 3804(12) 6 [Google Scholar] ). This classification scheme can result in a complex name, which is …

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Sequence Stratigraphy of Fine-Grained “Shale” Deposits ...

The fine-grained “shale” deposits host a vast amount of unconventional oil and gas resources. This chapter examines the variations in lithofacies, patterns of well logs, geochemistry, and mineralogy in order to construct a sequence stratigraphic framework of the representative marine Barnett ...

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