Ordovician shale mineral composition

Petrological and geochemical characteristics of the Ordovician

2023年1月1日  According to its primary mineral composition, the Ordovician–Silurian black shale in the JY1 and YY2 wells can be divided into the following four main rock types: siliceous 2017年6月21日  Mineral types (detrital and authigenic) and organicmatter components of the OrdovicianSilurian Wufeng and Longmaxi Shale (siliceous, silty, argillaceous, and Mineral types and organic matters of the OrdovicianSilurian 2024年11月15日  Total organic carbon (TOC) content, mineral composition, organic carbon isotope composition, as well as the major and trace elements in the shale samples were all Organic matter accumulation under the MiddleUpper Ordovician 2021年11月1日  The organic matterrich shales in WufengLongmaxi Formation, Jiaoshiba area, Southeast China, are showing a notable petrographic heterogeneity characteristic within the Mineralogical and petrographic characteristics of the Ordovician

Lithofacies Types and Physical Characteristics of

2023年5月15日  The mineral components of the organicrich shale in the Wufeng–Longmaxi Formation mainly include siliceous minerals, clay minerals, and carbonate minerals As the first element of the lithofacies classification, 2022年9月22日  Consistent with the mineral compositions, the XRF results show that SiO 2 and Al 2 O 3 are the dominant major element oxides in the Wufeng–Longmaxi shale The SiO 2 content ranges from 2056% to 7869%, Mineralogy and Geochemistry of the Upper Ordovician 2020年1月15日  The shales display varying total organic carbon content ranging from 02% to 6% and are composed of black siliceous mudstone, shelly limestone, siliceous clayrich Lithofacies and depositional mechanisms of the 2020年10月28日  The shale mainly consists of calcite, quartz, feldspar and clay minerals, with a small amount of dolomite and pyrite With the increase in thermal evolution degree, calcite MINERALOGY AND PORE STRUCTURES OF THE ORDOVICIAN

加拿大魁北克省奥陶系Utica海相页岩矿物分析及孔隙

2020年6月16日  The results show that the organic matters in the Utica shale are relatively rich and have undergone a thermal evolution process from mature or highmature stage to overmature stage as the depth increases The shale Mineral composition and brittleness analyses were performed on three sets of Paleozoic organicrich shales from China south area using the Xray diffraction technology in this studyThe results show that quartz is abundant in the Lower Cambrian and Upper Permian shales,with average contents of 4665% and 4402% respectively,while their clay minerals components are Mineral composition and brittleness of three sets of Paleozoic Pore evolution modeling in natural lacustrine shale influenced by mineral composition: Implications for shale oil exploration and CO2 storage Smith, G, et al Shale lithofacies controls on porosity and pore structure: An example from Ordovician Goldwyer Formation, Canning Basin, Western Australia Journal of Natural Gas Science and Pore evolution modeling in natural lacustrine shale influenced by 2021年11月1日  Mineral compositions of the Wufeng shale in well X1: F = Formation, Lith = Lithology Two types of pyrite can be observed in the Wufeng Formation according to the grain size and shape Type one pyrite is framboidal and is usually distributed along the bedding with intergrowth OM Intergranular pores and moldic pores are generally well developed in these Geochemical characteristics and organic matter accumulation

Mechanisms of Reservoir Space Preservation in UltraDeep Shales

2024年10月18日  This study aims to explore the reservoir characteristics and formation mechanisms of ultradeep shale gas in the Ordovician–Silurian Wufeng–Longmaxi Formation in the Sichuan Basin in order to provide theoretical support and practical guidance for the exploration and development of ultradeep shale gas With recent breakthroughs in ultradeep 2022年6月1日  It is worth noting that TOC content and porosity of the Wufeng Formation are less than other wellknown shale gas formations with similar mineral compositions and grain assemblages, including the Barnett shale, the WL of the Jiaoshiba area, the Upper Pennsylvanian Cline shale, and the Upper Cretaceous Eagle Ford Formation (Milliken et al, 2012, Milliken et Grain assemblages and diagenesis in OrdovicianSilurian Download scientific diagram Mineral composition of the Guanyinqiao Member in and around the Sichuan Basin from publication: Guanyinqiao Member lithofacies of the Upper Ordovician Wufeng Mineral composition of the Guanyinqiao Member in and around 2020年4月27日  Geochemical and Geological Characteristics of the Upper Ordovician–Lower Silurian Shales in the Upper Yangtze the composition of quartz group of mineral component ranges from 18 to 85 Geochemical and Geological Characteristics of the Upper Ordovician

Mineral Composition of Prospective Section of WufengLongmaxi Shale

Currently, Luzhou in the Sichuan Basin is a focal point for shalegas exploration and development in China However, a lack of detailed research on the mineral composition of the Wufeng FormationLongmaxi Formation (WFLF) shale is hindering the extraction of deepburied shale gas in the Luzhou shale play Herein, a field emission scanning electron microscope (FESEM) DOI: 101016/jjseaes2022 Corpus ID: ; The genetic relationship between paleoenvironment, mineral compositions and lithofacies in the Ordovician–Silurian Wufeng–Longmaxi sedimentary succession in the Sichuan Basin, SW ChinaThe genetic relationship between paleoenvironment, mineral compositions 2018年10月23日  The distribution and mineral composition of the WufengLongmaxi shale on the Yangtze platform are directly influenced by the geomorphology of the Late OrdovicianEarly Silurian periodFactors controlling microfractures in black shale: A case study of 2024年9月1日  The elemental geochemistry of the shales contains crucial geological information about rock composition, weathering and transport processes, sedimentary environment, and diagenetic processes (Fralick and Kronberg, 1997)A crucial aspect of elementbased provenance analysis is in evaluating the efficacy of employed proxiesProvenance composition and evolution of marine black shales in

The genetic relationship between paleoenvironment, mineral compositions

2022年9月15日  Petrological analysis revealed that a variety of shale lithofacies developed in the Late Ordovician–Early Silurian, such as silicarich shale, carbonaterich shale, and clayrich shale (Melchin and Holmden, 2006, Liang et al, 2012, Melchin et al, 2013, Xu et al, 2020)Previous studies attributed the development of the Ordovician–Silurian shales to one of the following 2014年5月8日  Palaeobiogeography Sphenothallus kukersianus is not known from the outside of the Sandbian oil shale deposits of NE EstoniaSkukersianus could be endemic for Sandbian of Baltica, if it is not a junior synonym of S Alleged Cnidarian Sphenothallus in the Late Download scientific diagram Characteristics of carbonaceous shale, silty shale and calcareous shale (a) Black carbonaceous shale, Well Yuye1, 2677 m; (b) Black carbonaceous shale, fractures Characteristics of carbonaceous shale, silty shale and 2022年9月15日  However, different types of shales are developed in specific sedimentary environments, and changes in sedimentary environments affect the mineral composition and lithofacies of shales (Lüning et al, 2000, Lu et al, 2020) It is difficult to explain the development of diverse shales by the single genetic mechanism mentioned aboveThe genetic relationship between paleoenvironment, mineral compositions

(PDF) Mineral composition of shales and the results of triaxial

Mineral composition of shales and the results of triaxial compression tests – a case study from the Ordovician and Silurian rocks of Poland Sylwia Kowalska 2015 Hydraulic fracturing is needed to extract hydrocarbons from shale rock formations2024年5月6日  Evolution of black shale sedimentary environment and its impact on organic matter content and mineral composition: a case study from WufengLongmaxi Formation in Southern and Eastern Sichuan BasinEvolution of black shale sedimentary environment and its impact 2016年5月5日  Investigation of Alum and Dictyonema Shales (Upper Cambrian–Lower Ordovician) in the Baltic region and adjacent areas (Fig 1a) as source of hydrocarbons has been performed for over 200 years (Andérsson et al 1985)The first attempts were connected with solvent extraction of bitumen and before World War II up to 1966 these rocks were retorted for Petroleum source rock evaluation of the Alum and Dictyonema Shales 2012年1月1日  Mineral composition not only affects the hydrocarbon generation mode and expulsion efficiency of source rocks (Fu et al 2011), but also plays an important role in the development of shale gas (PDF) Characteristics of shale lithofacies and reservoir space of

Shale gas potential of Ordovician marine Pingliang shale and

2023年2月5日  To investigate the shale gas potential, a series of measurements (ie RockEval pyrolysis, maceral composition analyses and Xray powder diffraction, etc) on representative outcrop samples were DOI: 101016/JMARPETGEO201706031 Corpus ID: ; Mineral types and organic matters of the OrdovicianSilurian Wufeng and Longmaxi Shale in the Sichuan Basin, China: Implications for pore systems, diagenetic pathways, and reservoir quality in finegrained sedimentary rocksMineral types and organic matters of the OrdovicianSilurian 2024年11月11日  Pyrite trace metal and sulfur isotopic compositions track metalliferous fluid circulation within the Ordovician/Silurian organicrich black shales in the Molecular and isotopic compositions show that shale gases within the Wufeng and Longmaxi Quartz and illite are dominant mineral phases in black shales from both Pyrite trace metal and sulfur isotopic compositions track 2024年1月10日  The 4314–90°2 shale fracture characteristics in the longitudinal section of Fig 12h show that the “light grey band” has an initiating effect on the crack failure, knowing the mineral composition of shale at this depth as shown in the “Basic mineral characteristics of shale” section, it can be assumed that the light grey bands in the CT image are dolomiteShale mineral particles directional arrangement and its effect on

Geochemical characteristics and organic matter accumulation

2021年11月1日  The Ordovician shale (Wufeng Formation) in the Upper Yangtze Platform is now considered a successful development interval, Mineral compositions of the Wufeng shale in well X1: 2021年5月1日  The successful gas exploration from North American shales has encouraged worldwide shale reservoirs development (Curtis, 2002; Loucks et al, 2009; Rezaee, 2015)However, the commercial success of shale reservoirs has overtaken the scientific consideration of shale characterisation, especially microstructural, lithofacies classification and Shale lithofacies controls on porosity and pore structure: An Rock metamorphism denotes a geological process that typically changes the mineral assemblage, the chemical composition of minerals, a Upper Ordovician shale with a fossiliferous limestone nodule b Same rock as a but heated to about 430 °C by a nearby plutonIntroduction to Metamorphic Rocks, Rock Metamorphism, and Devonian–Carboniferous shale has similar mineral composition to Ordovician–Silurian shale, with small pore diameter, low porosity, moderate thermal maturity and similar pore volume and Ternary diagram of mineral compositions of shale samples in

Chapter 13 The Ordovician rocks GeoGuide

In the zone of Did extensus the fauna consists, at Bodynolwyn and Chwaenhen, merely of the zone fossil and a Didymograptus allied to Did deflexus EW which is known to occur in the zone on the mainland of North Wales where the fauna is richer Beds to the southeast of Treiorwerth contain abundant fragments of a large Dichograptid, which is probably Tetragraptus headi (Hall)Shale lithofacies Mineral composition Multiscale mechanical property Nanoscale mechanics (MLA) to define the mineral distribution in Ordovician shales from the Longmaxi Formation, Sichuan Basin, China We apply scanning electron microscopy (SEM) to characterize the form of the contacts between adjacent minerals and the morphology ofNanoscale mechanical property variations concerning mineral composition 2021年11月1日  Changes of sedimentary environments recorded in the Late Ordovician–Early Silurian sedimentary succession can be reflected in mineral composition and lithofacies of shalesMineralogical and petrographic characteristics of the Ordovician Mineral composition and brittleness analyses were performed on three sets of Paleozoic organicrich shales from China south area using the Xray diffraction technology in this studyThe results show that quartz is abundant in the Lower Cambrian and Upper Permian shales,with average contents of 4665% and 4402% respectively,while their clay minerals components are Mineral composition and brittleness of three sets of Paleozoic

Pore evolution modeling in natural lacustrine shale influenced by

Pore evolution modeling in natural lacustrine shale influenced by mineral composition: Implications for shale oil exploration and CO2 storage Smith, G, et al Shale lithofacies controls on porosity and pore structure: An example from Ordovician Goldwyer Formation, Canning Basin, Western Australia Journal of Natural Gas Science and 2021年11月1日  Mineral compositions of the Wufeng shale in well X1: F = Formation, Lith = Lithology Two types of pyrite can be observed in the Wufeng Formation according to the grain size and shape Type one pyrite is framboidal and is usually distributed along the bedding with intergrowth OM Intergranular pores and moldic pores are generally well developed in these Geochemical characteristics and organic matter accumulation 2024年10月18日  This study aims to explore the reservoir characteristics and formation mechanisms of ultradeep shale gas in the Ordovician–Silurian Wufeng–Longmaxi Formation in the Sichuan Basin in order to provide theoretical support and practical guidance for the exploration and development of ultradeep shale gas With recent breakthroughs in ultradeep Mechanisms of Reservoir Space Preservation in UltraDeep Shales 2022年6月1日  It is worth noting that TOC content and porosity of the Wufeng Formation are less than other wellknown shale gas formations with similar mineral compositions and grain assemblages, including the Barnett shale, the WL of the Jiaoshiba area, the Upper Pennsylvanian Cline shale, and the Upper Cretaceous Eagle Ford Formation (Milliken et al, 2012, Milliken et Grain assemblages and diagenesis in OrdovicianSilurian

Mineral composition of the Guanyinqiao Member in and around

Download scientific diagram Mineral composition of the Guanyinqiao Member in and around the Sichuan Basin from publication: Guanyinqiao Member lithofacies of the Upper Ordovician Wufeng 2020年4月27日  Geochemical and Geological Characteristics of the Upper Ordovician–Lower Silurian Shales in the Upper Yangtze the composition of quartz group of mineral component ranges from 18 to 85 Geochemical and Geological Characteristics of the Upper Ordovician Currently, Luzhou in the Sichuan Basin is a focal point for shalegas exploration and development in China However, a lack of detailed research on the mineral composition of the Wufeng FormationLongmaxi Formation (WFLF) shale is hindering the extraction of deepburied shale gas in the Luzhou shale play Herein, a field emission scanning electron microscope (FESEM) Mineral Composition of Prospective Section of WufengLongmaxi Shale DOI: 101016/jjseaes2022 Corpus ID: ; The genetic relationship between paleoenvironment, mineral compositions and lithofacies in the Ordovician–Silurian Wufeng–Longmaxi sedimentary succession in the Sichuan Basin, SW ChinaThe genetic relationship between paleoenvironment, mineral compositions

Factors controlling microfractures in black shale: A case study of

2018年10月23日  The distribution and mineral composition of the WufengLongmaxi shale on the Yangtze platform are directly influenced by the geomorphology of the Late OrdovicianEarly Silurian period

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