Results 111 to 120 of about 54,343 (312)
Surface hydration‐induced damage in tight oil‐bearing sandy conglomerate reservoirs
Deep Underground Science and Engineering, EarlyView.A series of techniques such as X‐ray diffraction, scanning electron microscopy, energy‐dispersive spectroscopy, conductivity tests, and infrared thermal imaging were used. The key findings are the identification of a two‐stage surface hydration process and the elucidation of the effects of various minerals and elements on the hydration process ...
Anbang Zhao +5 more
wiley +1 more source
, 2007 New digital tools are influencing the working methods and means of expression for architects and engineers. New technologies have made it possible to generate, handle and realise other kinds of forms and structures, and also started to change notions and
Nilsson, Fredrik,
core
Quantifying reaction-induced stresses using high angular resolution electron backscatter diffraction (HR-EBSD): Implications for metamorphic hydration reactions [PDF]
, 2019 Hydration reactions are a fundamental metamorphic process and play a critical role in Earth’s tectonics and water budget. Petrological observations previously emphasized that volume expansion was accommodated by pressuresolution or tectonic extension ...
Structural geology and EM +2 more
core
Deep Underground Science and Engineering, EarlyView.Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei +4 more
wiley +1 more source
The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations
Deep Underground Science and Engineering, EarlyView.Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu +3 more
wiley +1 more source
Gravity-flow dominated sedimentation on the Buda paleoslope (Hungary): Record of Late Eocene continental escape of the Bakony unit [PDF]
, 1992 The Upper Eocene sequence of the Buda Hills consists of fluvial and shallow marine conglomerates, sandstones, bioclastic shallow-water limestone, marlstone and pelagic Globigerina marl.
Fodor, László +3 more
core +1 more source
Руды и металлыThe article reviews and summarizes the data of regional and large-scale geological and geophysical works by JSC Dalgeofizika, Institute of Tectonics and Geophysics, and other organizations within the Gonzha Salient and its framing.
Kopylov M. I., Petukhova L. L.
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao +5 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang +4 more
wiley +1 more source
The Alpine evolution of Thessaly (NW Greece) and Late Tertiary Aegean kinematics [PDF]
, 1998 The Aegean region is one ofthe most studied regions currently undergoing post-orogenic extension. Numerous kinematic and dynamic models have been proposed to account for its active tectonics.
IVAU: Instituut voor Aardwetenschappen Utrecht +2 more
core +1 more source