Results 31 to 40 of about 76,051 (383)

Automatic and Manual Fracture-Lineament Identification on Digital Surface Models as Methods for Collecting Fracture Data on Outcrops: Case Study on Fractured Granite Outcrops, Bangka

open access: yesFrontiers in Earth Science, 2020
Three-dimensional outcrop models, or Digital Surface Models (DSMs), have proved their capacity in many geoscience studies. Along with the advantage in the rapid acquisition, DSMs are capable of creating virtual models of fractured outcrops to be ...
Muhammad Edo Marshal Nurshal   +8 more
doaj   +1 more source

Rupture by damage accumulation in rocks [PDF]

open access: yes, 2006
The deformation of rocks is associated with microcracks nucleation and propagation, i.e. damage. The accumulation of damage and its spatial localization lead to the creation of a macroscale discontinuity, so-called "fault" in geological terms, and to the
A Buchel   +64 more
core   +4 more sources

Multiscale simulation of injection-induced fracture slip and wing-crack propagation in poroelastic media [PDF]

open access: yes, 2021
In fractured poroelastic media under high differential stress, the shearing of fractures and faults and the corresponding propagation of wing cracks can be induced by fluid injection. Focusing on low-pressure stimulation with fluid pressures below the minimum principal stress but above the threshold required to overcome the fracture's frictional ...
arxiv   +1 more source

Simulating spatial and temporal evolution of multiple wing cracks around faults in crystalline basement rocks [PDF]

open access: yes, 2007
Fault zones are structurally highly spatially heterogeneous and hence extremely complex. Observations of fluid flow through fault zones over several scales show that this structural complexity is reflected in the hydrogeological properties of faults ...
Anderson   +39 more
core   +1 more source

Typical misinterpretations and scientific concepts in well-logging geologic studies

open access: yesNatural Gas Industry B, 2023
The method and theoretical system of well logging geology have been widely used in the fields of basic geology, petroleum geology and engineering geology, but the different response sensitivity of different well logging series to geological information ...
Jin Lai   +7 more
doaj  

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

Transport efficiency and dynamics of hydraulic fracture networks [PDF]

open access: yes, 2015
Acknowledgments This study is carried out within the framework of DGMK (German Society for Petroleum and Coal Science and Technology) research project 718 “Mineral Vein Dynamics Modeling,” which is funded by the companies ExxonMobil Production ...
Bons, Paul D.   +2 more
core   +2 more sources

Fracture Characteristics of Mélange Complex Basement in Bantimala Area, South Sulawesi, Indonesia

open access: yesIndonesian Journal on Geoscience, 2017
DOI: 10.17014/ijog.4.3.121-141A detailed geological mapping and fracture characterization had been performed in Bantimala area, South Sulawesi, Indonesia.
Benyamin Sapiie   +3 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

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