Results 11 to 20 of about 700 (192)
Paleokarst coastal caves at Torricelle Hills (Lessini Mountains, Venetian Prealps, Italy) [PDF]
International Journal of Speleology, 2023 This paper describes a set of paleokarst caves at Torricelle Hills near Verona (Southern Alps, Italy.) At this locality, erosional surfaces and paleokarst cavities show that sedimentation of late Paleogene neritic limestones was interrupted by subaerial ...
Guido Gonzato +4 more
doaj +2 more sources
Examples of Paleokarst in Mesozoic Carbonate Formations in the Carpathian Foreland Area
EnergiesA paleokarst system developed in the Upper Jurassic–Lower Cretaceous carbonate complex has been recognized in the Carpathian Foreland area. Well logs testing and core data as well as an acoustic imager, a microresistivity scanner and six-arm dipmeter ...
Anna Łaba-Biel +7 more
doaj +2 more sources
Tectono-Sedimentary Evolution of the Madrid Basin (Spain) during the Late Miocene: Data from Paleokarst Profiles in Diagenetically-Complex Continental Carbonates [PDF]
Geosciences, 2020 An intra-Vallesian (Upper Miocene) paleokarst developed at the top of the Intermediate Miocene Unit in the continental intracratonic Madrid Basin is recognized.
Juan Carlos Cañaveras +4 more
doaj +2 more sources
Paleokarst features and reservoir distribution in the Huanglong Formation of eastern Sichuan
Petroleum Exploration and Development, 2011 The identification markers of paleokarst have been described in detail and include a combination of surface geology, drilling data and the isotopic characteristics of carbon, oxygen and strontium.
Zhang Bing +6 more
doaj +2 more sources
Geo-modelling of paleokarst reservoirs - from cave-survey to geocellular paleokarst model [PDF]
, 2016 Hydrocarbon reservoirs exhibiting features inherited from former karst processes acting on the reservoir rocks are relatively common worldwide. However, on the Norwegian continental shelf, paleokarst plays have only recently been identified in the Barents Sea.
Ledsaak, Karina
openaire +2 more sources
Energy Science & Engineering, 2019 Karstification in carbonate successions has an important influence on hydrocarbon accumulation. Taking the Ordos Basin, currently the largest petroliferous basin in China, as an example, this study examines the large‐scale, long‐term (~120 Myr ...
Di Xiao +6 more
doaj +2 more sources
Paleokarst shafts in the western desert of Egypt: A unique landscape
Acta Carsologica, 2013 Paleokarst shafts in the western desert of Egypt: A unique landscapeThe Eocene limestone plateau of the Western Desert of Egypt has various karst features, including shafts created during ancient wet periods.
Ashraf Mostafa
doaj +3 more sources
Paleokarst reservoir modelling - A concept-driven approach [PDF]
, 2021 A significant proportion of the world's hydrocarbon production comes from paleokarst reservoirs. Although these reservoirs boast some of the most productive wells in oil history, the recovery factor is relatively low (RFmean: 32%) compared to other ...
Lønøy, Bjarte
core +3 more sources
Hydrological Processes, Volume 37, Issue 12, December 2023., 2023 The study's simulations reveal that sediment coverage has a significant impact on karst aquifer drainage. A thin layer of highly permeable sediments can considerably reduce conduit outlet discharge, while an impervious sediment cover can completely block the outlet, potentially leading to the emergence of new conduits and springs.
Marc Ohmer +2 more
wiley +1 more source
Research progress of paleokarst oil and gas reservoirs
Carsologica Sinica, 2022 The transformation of soluble rocks by paleokarst can form dissolution pores and other reservoir spaces. Especially for carbonate rocks, the development of paleokarst can greatly improve the reservoir performance of the formation and form karst ...
Yu ZHANG +3 more
doaj +1 more source