Results 61 to 70 of about 870 (186)

Restoration of paleokarst landform and its geological significance: A case from Middle Permian Maokou Formation in Northwestern Sichuan Basin

open access: yesPetroleum Exploration and Development, 2016
Based on the analysis of deposition and tectonism, “residual thickness method” is used to restore the paleokarst landform of Middle Permian Maokou Formation in northwestern Sichuan Basin.
Dahai TANG   +7 more
doaj   +1 more source

Geo-modeling and fluid flow simulation in paleokarst reservoirs [PDF]

open access: yes, 2015
This master thesis focuses on modeling and simulation of fluid flow in collapsed paleocave systems, also known as paleokarst. Petroleum reservoirs all around the world exhibit karst structures.
Furnée, Jon Petter Bjerkreim
core  

Geoquímica de las rocas asociadas al paleokarst cretácico en la plataforma de Actopan: evolución paleohidrológica

open access: yesRevista Mexicana de Ciencias Geológicas, 2018
El paleokarst expuesto en las rocas cretácicas de la Plataforma de Actopan (Estado de Hidalgo) permite investigar, mediante la petrología y la geoquímica, la posición de las zonas vadosa y freática que propiciaron la formación del antiguo karst durante ...
Baldomero E. Carrasco-Velázquez   +3 more
doaj  

A Modelling Workflow for Seismic Characterization of Paleokarst Reservoirs [PDF]

open access: yes, 2018
Karst is a type of landscape formed by dissolution of soluble rocks such as carbonates. Caves are common subsurface karst features and develop where water percolates through the host rock and creates cave-passages through dissolution.
Johansen, Martin Kyrkjebø
core  

Evolution of a regionally extensive evaporite removal paleokarst complex : Mississippian Madison Group, Wyoming [PDF]

open access: yes, 2012
textPaleokarst systems owe their complex geometries to the interaction between the karst aquifers and the host rock being dissolved. The majority of paleokarst research to date has considered dissolution of carbonate strata (James and Choquette 1987 ...
Kloss, Travis T.
core   +1 more source

Paleokarst shafts in the western desert of Egypt: A unique landscape

open access: yesActa 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   +1 more source

Rebliment sedimentari d'un Paleokarst. Formació Utrillas. Terra Alta, Tarragona. [PDF]

open access: yes, 2019
Es tracta de descriure, analitzar i interpretar un conjunt de materials terrígens i siliciclàstic que rebleixen un paleokarst. Aquest està situat sota la discordança basal de la Formación Utrillas. A la serra de Cavalls (Terra Alta), entre les localitats
Martorell Melià, Caterina Maria
core   +1 more source

Paleogeomorphy evolution of the Ordovician weathering crust and its implication for reservoir development, eastern Ordos Basin

open access: yesPetroleum Research, 2018
Gas reservoir development of the Ordovician weathering crust in the Ordos Basin is closely controlled by the pre-Carboniferous paleogeomorphy. Previous studies show that the paleogeomorphy is high in the west and low in the east, and the karst highland ...
Xinshan Wei   +6 more
doaj   +1 more source

GEOMORPHOLOGY AND MORPHOGENESIS OF THE BELI LOM RIVER VALLEY [PDF]

open access: yesAnalele Universității din Craiova. Seria Geografie, 2011
The present paper renders the results of a geomorphology research performed in North-Eastern Bulgaria. It focusses on the geomorphology and the main stages of evolution of the Beli Lom River. On the base of field research, geology and geophysics research,
Svetla STANKOVA
doaj  

Petrophysical characterization in paleokarst and effect on reservoir properties [PDF]

open access: yes, 2012
Karst is a geological process that can enhance porosity and permeability within a carbonate succession, thus affecting the heterogeneity producing a substantial effect on the fluid flow.
Slotnæs, Katrine Nordlund
core  

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