Results 131 to 140 of about 1,640 (187)

Soil resource heterogeneity promotes species richness only at a fine scale at the early restoration of karst abandoned farmland. [PDF]

iScience
Guo X, Luo J, Luo W, Du H, Zhao Y, Tao W, Li Z, Shehzadi K, Tao J, Liu J.   +9 more
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The PLSR-ML fusion strategy for high-accuracy leaf potassium inversion in karst region of Southwest China. [PDF]

Front Plant Sci
Song Z, He W, Yao Y, Yu L, Huang J, Xu Y, Wang H.   +6 more
europepmc   +1 more source

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Multiscale Integration for Karst Reservoir Flow Simulation Models

SPE Europec featured at 81st EAGE Conference and Exhibition, 2019
Abstract The significant oil reserves related to karst reservoirs in Brazilian pre-salt field adds new frontiers to the development of upscaling procedures to reduce time on numerical simulations. This work aims to represent karst reservoirs in reservoir simulators based on special connections between matrix and karst mediums, both ...
Manuel Gomes Correia, João Carlos von Hohendorff Filho, Denis Jose Schiozer   +2 more
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Mechanical behavior of carbonate reservoirs with single karst cavities

Geomechanics for Energy and the Environment, 2021
Abstract In recent years, operational issues during the exploration of Pre-salt reservoirs have aroused the interest of the Brazilian oil and gas industry in studying karstification and its effect on carbonate reservoirs. Since then, a massive research effort was dedicated to the geology of the Brazilian onshore karstified carbonate formations ...
Pedro A.L.P. Firme, Roberto J. Quevedo, Deane Roehl, Leonardo C. Pereira, Caroline L. Cazarin   +4 more
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Reservoir Implications of Modern Karst Topography

AAPG Bulletin, 1999
Tropical karst landscapes exhibit a predominance of positive relief features relative to the negative relief features (i.e., sink holes, dolines, etc.) of temperate karst areas and yet, paradoxically, have never been observed in the subsurface on seismic sections.
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Karst Systems Controlled Reservoir Heterogeneity

Middle East Oil, Gas and Geosciences Show (MEOS GEO)
Abstract Karst systems are key contributors to reservoir heterogeneity in carbonate formations across Abu Dhabi, often exerting significant influence on permeability, porosity, and overall reservoir performance. These karst features, ranging from millimetre-scale vugs to kilometre-wide sinkholes and collapse structures, are frequently ...
A. Noufal, K. Obaid
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Quantitative assessment of karst pore volume in carbonate reservoirs

AAPG Bulletin, 2019
Evaluating uncertainty in karst pore volume (KPV) is a current industry challenge that is critical for field development planning and optimizing recovery. Hydrocarbon pore volume in karst can be significant in large super-giant fields. Although a wide variety of karst features and the geologic processes that describe their morphology have previously ...
Fermín Fernández-Ibáñez, Paul J. Moore, Gareth D. Jones   +2 more
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Deep carbonate fault–karst reservoir characterization by multi‐task learning

Geophysical Prospecting, 2023
AbstractThe carbonate fault–karst reservoir is a special and significant reservoir in the Shunbei area, and the development of the cave has been controlled by strike‐slip faults. Due to the complex subsurface structures, fault–karst reservoir characterization is generally divided into fault and cave detection tasks.
Zheng Zhang, Haiying Li, Zhe Yan, Jiankun Jing, Hanming Gu   +4 more
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Chapter 9 Hydrocarbon reservoirs in karsted carbonate rocks

1996
Publisher Summary This chapter reviews some basic geologic aspects of unconformity-related hydrocarbon reservoirs in karsted carbonate rocks. It concerns their global occurrence, contribution to global oil and gas reserves, subsurface recognition, and reservoir petrophysics.
S.J. Mazzullo, G.V. Chilingarian
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Hierarchical Approach to Modeling Karst and Fractures in Carbonate Karst Reservoirs in the Tarim Basin

Abu Dhabi International Petroleum Exhibition & Conference, 2019
Abstract Karst reservoirs in the Tarim Basin, northwestern China, were formed by subaerial exposure and karstification from the Ordovician formation and represent the main plays. Predicting the storage capacity and quantifying permeability heterogeneities are challenging while important for field development planning.
Feng Shen, Kuanzhi Zhao, Yintao Zhang, Yinhua Yu, Jingliang Li   +4 more
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