— The study on the destruction of the limestone microstructure after high temperature treatment has a significant value in the airtightness and safety of underground high temperature geotechnical engineering In order to truly simulate the influence of the underground high temperature environment on limestone taking seven groups of
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— The origin of grain dolomite in M55 Member of Ordovician Majiagou Formation in northwestern Ordos Basin was studied by geochemical and petrological tests on core samples
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— Characteristics of High Gamma Ray Sandstone Reservoirs for Yanchang Formation in Ordos Basin Xiao Li ZHANG Xiao Li ZHANG [email protected] State Key Laboratory for Continental Dynamics/Department of Geology Northwest University Xi an 710069 China Search for more papers by this author
— The M 5 5 M 5 1 sub members of the Middle Ordovician Majiagou Formation in the gas fields of the central Ordos Basin were taken as a case to analyze the vertical zonation characteristics of weathered crust ancient karst and to evaluate and predict reservoirs through plenty of core and thin section observation with geological background
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Ordos has a typical temperate continental climate with dry and cold winters and warm and humid summers The coldest month is January average temperature around 11°C and July is the hottest month average temperature around 23°C
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— Limestone powder LS is one of the mineral materials in concrete due to its wide availability and low cost This paper discusses effects of LS on the workability setting time shrinkage mechanical properties and durability of concrete Such effects are mainly influenced by many factors including the particle size and content of LS the
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MORE A set of tight limestone reservoirs has been developed in the Permian Taiyuan Formation of the Ordos recent years the risk exploration has made a substantial breakthrough and has become a key field of natural gas field −3 2
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— The former reservoir is primarily characterized by powder fine dolostone with residual structure dolomite intercrystalline pore and micropore with porosity ranging from 2% to 11% the Ma5 5 submember is a set of carbonate rocks dominated by limestone interbedded with dolostone that formed during the process of the third sea level
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The Cambrian Sanshanzi Formation is an important dolomite horizon in the Ordos Basin of northern China and is well exposed in the western part of that basin This paper focuses on the petrography and geochemistry of dolomites in this formation with an aim to provide a better understanding of their genesis Reflux seepage burial and hydrothermal dolomites
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— In this investigation a comprehensive assessment was conducted on the cooperative effects of Super Absorbent Polymers SAP limestone powder and white cement within the realm of fair faced concrete We discerned that while white cement augments the color vibrancy of the concrete its accelerated hydration rate potentially
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— New understandings of the lithofacies paleogeography of the middle assemblage of Majiagou Fm in the Ordos Basin and with the lithology of muddy dolomite micritic powder crystal Ma1 members among which Ma4 and Ma2 are dominated by residual dolarenite powder fine crystalline dolomite micritic limestone and bioclast
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— In order to evaluate the hydrocarbon generation potential and effectiveness of the carbonate source rock from the Lower Permian Taiyuan Formation of the Upper Paleozoic gas reservoirs in the central and eastern Ordos Basin 87 core samples from the formation were analyzed through the comprehensive application of core observation thin
Yêu cầu trực tuyến →— Limestone powder is used as one of the fillers in concrete due to its wide availability and low cost Apart from reducing carbon dioxide emissions use of limestone powder has also resulted in the decrease of heat of hydration and improvement in the workability of concrete This chapter reviews the effect of limestone powder on the
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