Results 11 to 20 of about 870 (186)
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
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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
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
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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 carbonate reservoirs (RFmean: 37 - 51%).
Lønøy, Bjarte
openaire +3 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
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Petroleum Exploration and Development, 2021 Based on analysis of outcrop, drilling, logging and seismic data, and geotectonic background, the lithofacies paleogeography and paleokarst geomorphology of the Middle Permian Maokou Formation in the northwestern Sichuan Basin were reconstructed, and the
Yuan ZHONG +9 more
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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
The Anatomical Record, Volume 306, Issue 11, Page 2693-2715, November 2023., 2023 Abstract A new Old World trident bat (Rhinonycteridae) is described from an early Miocene cave deposit in the Riversleigh World Heritage Area, northwestern Queensland, Australia. Living rhinonycterids comprise a small family of insect‐eating, nasal‐emitting rhinolophoid bats from Africa, Madagascar, Seychelles, the Middle East, and northern Australia ...
Suzanne J. Hand +3 more
wiley +1 more source
Microgravity Monitoring in Fractured‐Vuggy Carbonate Reservoirs
Geofluids, Volume 2023, Issue 1, 2023., 2023 With the development of Tahe Oilfield entering the high water cut stage, gas channeling occurs in fractured‐vuggy system during nitrogen injection, resulting in some inefficient wells. To improve the development effect of gas flooding, how to define the distribution of fracture, vuggy, and remaining oil has become one of the urgent problems to be ...
Chunhui Du +5 more
wiley +1 more source