Results 31 to 40 of about 72,501 (266)

Structure and fracture characterization of the Jizan group: Implications for subsurface CO2 basalt mineralization

open access: yesFrontiers in Earth Science, 2023
The coastal region of southwest Saudi Arabia contains a thick sequence of Late Oligocene basalts in the Jizan Group, which accumulated along the continental rift that preceded the opening of the Red Sea. These basalts are targeted for the disposal of CO2
Jakub Fedorik   +12 more
doaj   +1 more source

Geomechanical Characteristics and Stimulation of Dibei Deep Tight Sandstone Reservoirs in the Kuqa Depression of Tarim Basin

open access: yesGeofluids, 2023
Facing the problem of increased production of deep tight gas reservoirs, this study takes the Dibei gas reservoir in Tarim Basin as an example, carries out geomechanical research, and reveals the rock mechanical properties, in situ stress, and fracture ...
Ke Xu   +6 more
doaj   +1 more source

Estimation of the Fracturing Parameters and Reservoir Permeability Using Diagnostic Fracturing Injection Test

open access: yesIraqi Geological Journal, 2023
The term "tight reservoir" is commonly used to refer to reservoirs with low permeability. Tight oil reservoirs have caused worry owing to its considerable influence upon oil output throughout the petroleum sector.
Hiba Hasan, Sameera Hamd-Allah
doaj   +1 more source

Crustal structure between the Knipovich Ridge and the Van Mijenfjorden (Svalbard) [PDF]

open access: yes, 2002
The Alfred Wegener Institute of Polar and Marine Research, the University of Bergenand the Hokkaido University acquired new seismic refraction data along a transect fromthe Knipovich Ridge to the inner Van Mijenfjorden in southern Svalbard.
Jokat, Wilfried   +3 more
core   +1 more source

Exploration methods for granitic natural stones - Geological and topographical aspects from case studies in Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2014
Regional and local geological constraints for location of natural stone deposits in glaciated terrains of southern and central Finland have been studied and applied to practical exploration for natural stone.
O. Selonen   +3 more
doaj   +1 more source

Emplacement of sandstone intrusions during contractional tectonics [PDF]

open access: yes, 2016
Acknowledgments We acknowledge the support of sponsoring companies of Phase 3 of the Sand Injection Research Group (SIRG). We are very grateful to John Waldron and Jessica Ross for the constructive reviews of the manuscript.
Alsop, G. Ian   +4 more
core   +1 more source

Productivity Prediction of Fractured-Vuggy Reservoirs under Time-Varied Flow Rates and Bottom Hole Flow Pressures

open access: yesGeofluids, 2022
Fracture-vuggy oil reservoirs contain micrometer-sized dissolved secondary pores, fractures, and meter-sized karst caves. Generally, the researches on the flow mechanism of fractured-vuggy reservoirs are based on the assumption of karst cave-fracture ...
Shan Tao   +4 more
doaj   +1 more source

An investigation of the basement complex aquifer system in Lofa county, Liberia, for the purpose of siting boreholes [PDF]

open access: yes, 2014
Liberia is recovering from a 14 year civil war and only 51% of the rural population has access to safe drinking water. Little hydrogeological knowledge survives in Liberia, increasing the difficulty in successfully siting new boreholes.
Elster, D.   +3 more
core   +1 more source

Precursor Mineral Phases of Forming Mollusk Shell Nacre: A Study of Hydrated Samples

open access: yesAdvanced Functional Materials, EarlyView.
Mineral, organic phase, and water are the essential components in mollusk shell nacre formation. Their interplay is not well understood, because the hydrated material is difficult to observe at high resolution, under close to native conditions. Forming nacre is studied using environmental and cryo‐electron microscopy and hydrated ACC phases, together ...
Anna Kozell   +4 more
wiley   +1 more source

Introducing standardized field methods for fracture-focused surface process research [PDF]

open access: yesEarth Surface Dynamics
Rock fractures are a key contributor to a broad array of Earth surface processes due to their direct control on rock strength as well as rock porosity and permeability.
M. C. Eppes   +12 more
doaj   +1 more source

Home - About - Disclaimer - Privacy