The formation of Sichuan limestone

Genesis of clay minerals and its insight for the formation of

2022年11月1日  The compositions of the clay minerals from different origins are identified and distinguished, and their formation and transformation conditions and proportion differences of 2022年9月1日  Based on new thermal history and denudation data, the maturation of the Lower Cambrian Qiongzhusi Formation source rocks in the Sichuan Basin were modelled and their Genesis of clay minerals and its insight for the formation of 2021年12月1日  Limestonemarlstone (LMMR) rhythms widely develop in the middle Permian Maokou Formation of Sichuan basin, and they are regarded as potential source rocks and Organic geochemistry, sedimentary environment, and organic 2023年11月1日  Limited research has been conducted on the sedimentary characteristics of the Maokou Formation, Longtan Formation, and Changxing Formation as well as the karst reservoirs and siliceous rocks within the Sedimentary Facies, Paleogeography, and Depositional

The timing of the initial collision between the South and North

2023年12月16日  In this study, detrital zircon U–Pb geochronology, trace element and Hf isotopic compositional data from the EarlyMiddle Triassic clastic rocks in the eastern Sichuan Basin 2024年3月19日  The limestonemarl alternations are widely developed in the first member of the Maokou Formation in Sichuan Basin, showing the characteristics of an authigenic selfstorage Geochemical Characteristics and Paleoenvironmental Significance 2010年12月1日  However, the phenomenon in the Maantang mudstone formation seems most like those of the modern Bahama bank The lime mudstone of Maantang is assumed to have formed by sequential historic (PDF) Distribution and formation mechanism of lime 2012年12月1日  A kind of particular rock type "leopard limestone" is widely distributed over Middle Permian Qixia Formation in the Northwest of Sichuan BasinCharacteristics and genesis of leopard limestone in Middle

Distribution and formation mechanism of lime mudstone in

2010年11月3日  The mud limestone layers, found in the oolitic bank of the Maantang formation in the northwestern Sichuan basin, China, are generally easily misinterpreted as an evidence of 2024年3月19日  Limestone and marl alternations are widely developed in the first member of the Middle Permian Maokou Formation in Sichuan Basin, and they are characterized by alternating development of lightcolored limestone and darkcolored marl [1,2,3]The studies show that the marl of the first member of Maokou Formation in Sichuan Basin has the reservoir Geochemical Characteristics and Paleoenvironmental Significance 2024年8月1日  The platformmarginal shoal carbonates of the Middle Permian Qixia Formation in the NW Sichuan Basin, as important ultradeep (>5000 m) hydrocarbon reservoirs, experienced multiphase dolomitization and recrystallization during the longterm and complex basin tectonic evolution; however, there is no consensus on the dolomitization mechanismEffects of basin tectonic evolution on multiphase dolomitization 2021年12月1日  Limestonemarlstone (LMMR) rhythms widely develop in the middle Permian Maokou Formation of Sichuan basin, and they are regarded as potential source rocks and important shale gas targets due to their high organic matter anic geochemistry, sedimentary environment, and organic

Geological characteristics and exploration prospect of oil and

2020年6月1日  The Xiaoheba Formation in the Sichuan Basin is dominated by mudstone and siltstone There are still some differences in the understanding of the sedimentary facies of the sandstone in the Xiaoheba Formation, wherein some think it is the underwater distributary channel deposition in the delta front in the freshwater environment [5] and others think it is the 2024年4月7日  Understanding the production dynamics characteristics is crucial in regulating the development potential of tight oil in lacustrine limestone reservoir However, the development characteristics of oil wells with low production and longcycles has hindered their commercial development in Da’anzhai Member of Sichuan basin Here we carried out Xray diffraction Exploring the potential of the lacustrine limestone reservoir in the Paleotemperature evolution and its driving mechanism during the formation of limestonemarl alternations in first member of Middle Permian Maokou Formation in Sichuan Basin[J] PETROLEUM GEOLOGY EXPERIMENT, 2023, 45(4): 726738 doi: 1011781/sysydz Citation:Paleotemperature evolution and its driving mechanism during the 2022年5月1日  The northeastern Sichuan Basin located in the northern margin of the Yangtze Plate has many large gas fields, such as the Yuanba and Longgang Gas Fields (Huang, 2014) (Fig 1)The Yuanba Gas Field, with its reserves of more than 1000 × 10 8 m 3 has a present burial depth of about 7000 m (Liu et al, 2017)In the Early Triassic period, it was a ramp The quantitative characterization of stylolites in the limestone

Sedimentary characteristics and lithofacies paleogeography of the

2024年6月1日  Cambrian in Sichuan basin deposited thick black shale, carbonate and clastic rock, which were formed in different sedimentary environment [11], including carbonate platform, shelf and tidal flatHowever, sedimentary facies of each formation in Cambrian are not very clear till now, which is the key to the prediction of granular dolomite reservoir and shales distribution2016年3月26日  Tectonic cycles and movements The Sichuan Basin situated in the western region of the Yangtze Platform is a rhombic and superimposed basin trending from northeast to southwest, South China, with an area of about 18 × 10 4 km 2, containing the east part of Sichuan Province, most of Chongqing and the junction zone of Hubei, Guizhou and Yunnan provinces Carbonate diagenetic products and processes from various DOI: 101016/jpetrol2022 Corpus ID: ; Genesis of clay minerals and its insight for the formation of limestone marl alterations in Middle Permian of the Sichuan BasinGenesis of clay minerals and its insight for the formation of limestone 2021年6月10日  Recently, industrial gas flows have been produced from the vertical well acidification tests of Wells JS1 and YH1 in Section 1 of the Maokou Formation in the southern region of eastern Sichuan The genesis of nodular limestone reservoirs of the first period of

The quantitative characterization of stylolites in the limestone

2022年5月1日  The Feixianguan Formation (Feixianguan Fm) of the Lower Triassic (northeastern Sichuan Basin, China) was selected to perform the research for this study because of the various types of limestone and abundance of stylolites2021年8月23日  The gas reservoir is characterized by early intraformational enrichment and late interformational adjustment The finding of the nodular limestone gas reservoir of the Mao1 member provides new insights into unconventional gas exploration in the Sichuan Basin, and shows great potential for increasing natural gas reserves and production in ChinaGeological Journal Wiley Online Library2018年4月1日  Deeplyburied carbonatereservoirs from the Lower Triassic Feixianguan Formation in the Sichuan Basin of China host extensive natural gas resources These reservoirs are predominantly found in oolitic shoals, with the reservoir quality of dolomitized zones being higher than that of undolomitized limestone counterpartsContrasting diagenetic evolution patterns of platform margin DOI: 101016/jmarpetgeo2022 Corpus ID: ; The quantitative characterization of stylolites in the limestone reservoirs of the Lower Triassic Feixianguan Formation, northeastern Sichuan Basin: Insights to the influence of pressure solution on the quality of carbonate reservoirsThe quantitative characterization of stylolites in the limestone

(PDF) Quartz types and origins of the Upper Permian Dalong Formation

2023年8月18日  A suite of deeply buried (56365645 m) mudstone samples of the Upper Permian Dalong Formation (DL) in the Sichuan Basin Feixianguan Formation muddy limestone (Fig 1 B)2022年1月1日  Photomicrographs of grain dolomite of the Sanshanzi Formation (a) Oolitic limestone, a small amount of oolites dolomitized with relic texture and intergranular pores, WS15, Shixiagu The genetic mechanism of shoal facies dolomite and its additive effect of Permian Qixia Formation in Sichuan Basin Acta Petrologica Sinica, 30 (3 Petrography, geochemistry and genesis of dolomites in the 2024年7月5日  As the main reservoir of coalbed gas in southeastern Sichuan, the mudstone of the Permian Longtan Formation has been drilled to obtain industrial gas, but the level of exploration and development is low The researches on the types of lithological assemblages, reservoir characteristics, and gasbearing properties are poor, which limits the evaluation and Differential characteristics of lithological assemblages and gas 2020年8月24日  Sichuan Basin is very famous for the Mesozoic reptiles, especially the Jurassic dinosaurs Here, we report some isolated plesiosaurian teeth and vertebrae newly excavated from the Middle Jurassic Xintiangou Formation in Yunyang county, Chongqing City, the northeastern region of the Sichuan Basin, southwestern China The specimens are referred to New freshwater plesiosaurian materials from the Middle Jurassic

Dolomitization process and its implications for porosity

2015年7月1日  Lithofacies and well logs of the XD1 well showing the log responses of limestone and dolostone in the Feixianguan Formation Limestone is characterized by its low GR, PEF values of about 5, and nearly Based on the comparison of pore types in dolostones between PG2 and MB4 wells in Feixianguan Formation, eastern Sichuan Basin the Yanchang Formation in Ordos Basin and evaluated the specific surface area, pore volume, and poresize distribution The 50−100 m thick Daanzhai Member of the Ziliujing Formation of the Jurassic system, in central Sichuan Basin, China, is rich in tight oil reserves and contains shelly limestone The latter is tight and with complexThe pore structure of tight limestone—Jurassic Ziliujing Formation 2023年3月1日  The Sichuan Basin is a sedimentary basin covering an area of about 26 × 10 4 km 2 (Wu et al, 2019)It is situated northwest of the middle and upper Yangtze Craton Block in eastern Sichuan Province (Fig 1)The Ordovician units in the Sichuan Basin mainly include seven formations; from bottom to top, these are the formations: Tongzi, Honghuayuan, Meitan, Sedimentary facies, lithofacies paleogeography, and an evaluation Limestone (calcium carbonate CaCO 3) is a type of carbonate sedimentary rock which is the main source of the material limeIt is composed mostly of the minerals calcite and aragonite, which are different crystal forms of CaCO Limestone Wikipedia

Nature and formation of evaporites in the passive continental

2021年7月6日  Several layers of evaporites, which are mineral resources and play an important role in oil and gas accumulation, are present in the lower to middle Triassic strata of the Jialingjiang and Leikoupo formations in the Sichuan Basin These evaporites are characterized by multiple layers, large thicknesses, extensive distributions, and clear salinization cycles Many 2024年8月7日  The northeastern part of Sichuan features principal saltbearing strata from the Upper Lower Triassic Jialingjiang Formation to the Lower Middle Triassic Leikoupo Formation These formations, spanning 100–400 m, predominantly consist of dolomitic limestone, occasionally interspersed with limestone, anhydrite, impure halite, and rock salt layersOrigin and Formation Mechanisms of Potassium and Lithium2024年4月1日  The types, occurrence and composition of authigenic clay minerals in argillaceous limestone of sepiolitebearing strata of the first member of the Middle Permian Maokou Formation (Mao1 Member) in eastern Sichuan Basin were investigated through outcrop section measurement, core observation, thin section identification, argon ion polishing, Xray Types, composition and diagenetic evolution of ScienceDirect2017年6月1日  Main microfacies of marnine carbonate in the Permian Maokou Formation: a micritic limestone with calcite cement, MF1, Lintanchang section; b micritic limestone with augen structure, MF1, Zaodu Carbonate diagenetic products and processes from various

Characteristics and Forming Processes of ReefShoal Reservoir in

2021年7月5日  The Upper Permian Changhsing Formation is one of the most important gasbearing formations in the Eastern Sichuan Basin Nonetheless, the primary factors controlling the reefshoal gas reservoirs of different regions are diverse Clarifying the controlling factors for the formation of intraplatform reefshoal reservoirs will promote the exploration and development DOI: 101016/jpetrol2022 Corpus ID: ; Factors influencing stylolite formation in the Cambrian Longwangmiao Formation, Sichuan Basin, SW China @article{Yang2022FactorsIS, title={Factors influencing stylolite formation in the Cambrian Longwangmiao Formation, Sichuan Basin, SW China}, author={Weiqiang Yang and Huayao Factors influencing stylolite formation in the Cambrian 2012年12月1日  The Sichuan Basin is a large carbonate basin where mottled dolomite is well in developed in several systems, of which the Longwangmiao Formation in the Lower Cambrian is one; others are the Qixia Characteristics and genesis of leopard limestone in Middle Keywords: sichuan basin, cambrian, longwangmiao formation, reservoir characteristics, main controlling factor 1 INTRODUCTION Carbonate reservoirs are mainly controlled by sedimentation, diagenesis Research on Reservoir Characteristics and Main Controlling

Effect of different lithological assemblages on shale

2022年8月12日  Various types of marinecontinental transitional facies are present in the gasbearing shales of the southeastern Sichuan Basin A review of the different lithological assemblages in these rocks is important for assessing 2018年2月1日  Based on the outcrop geological survey and the analysis of a large number of singlewell data, this paper divides the Longwangmiao Formation into upper and lower members representing two eustasy cycles, which previously was deemed as a member [5], [6]The lower cycle, mainly developed in the east of NanjiangYanngbaChuanyiFandian in Leshan, is Facies and porosity origin of reservoirs: Case studies from the 2016年4月15日  Download: Download highres image (2MB) Download: Download fullsize image Fig 1 Variations in the network structure of the Upper Ordovician Pagoda Formation in South China: (A) Sinuous network structure, Yanzikou section, Bijie, western Guizhou Province, (B) bedding surface view of sinuous network structure, Gongtan section, Xishui, northern Meganodular limestone of the Pagoda Formation: A time 2024年4月2日  1 PetroChina Hangzhou Research Institute of Geology, Hangzhou, China; 2 College of Energy, Chengdu University of Technology, Chengdu, China; 3 Xihua University, Chengdu, China; The Middle Permain Maokou Formation (P 2 m) is a new region of natural gas exploration in the Sichuan Basin, is characterized by bioclastic limestone with localized Threestage hydrocarbon accumulations in the Middle Permian in

Sedimentary control on diagenetic paths of dolomite reservoirs in

2023年8月1日  As such, the specific objectives of this study were to: (1) determine the lithofacies and nature of the diagenetic fluid in Chihsia Formation dolomites in the northern Sichuan Basin using field and drilling data; (2) evaluate the depositional, structural, and diagenetic controls on the reservoir formation processes and their effects on reservoir quality; and (3) establish a 2024年8月7日  The hydrothermal dolomitization, facilitated by basement fault activities, had an important impact on the Permian Maokou Formation dolomite in the Sichuan Basin, which experienced complex diagenesis and presented strong reservoir heterogeneity The source and age of diagenetic fluids in this succession remain controversial In this study, various analyses Source and UPb Chronology of Diagenetic Fluids in the Permian 2018年6月1日  The pore structure of the tight limestone in the Daanzhai Member of the Ziliujing Formation, Jurassic System, in central Sichuan Basin, China, is complex but essential to the exploration and The pore structure of tight limestone—Jurassic Ziliujing Formation 2024年3月19日  The Sichuan Basin is a secondary tectonic unit of the Yangtze Plate [], a large multi cycle superimposed basin developed on the basis of the Upper Yangtze cratonIt is a rhombic tectonic basin formed within the Upper Yangtze craton by the intersection of deep faults in the northeast and northwest directions []Affected by the late Caledonian tectonic Division of the Diagenesis Stages of the Lower Permian Maokou Formation

Characteristics and origin of Lower Triassic Feixianguan Formation

2023年1月1日  Partially dolomitized limestone mainly occurred at the bottoms of the sedimentary cycles, Source of dolomitizing fluids and dolomitization model of the upper Permian Changxing and lower Triassic Feixianguan formations, NE Sichuan Basin, China Mar Petrol Geol, 125 (2021), Article

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