Application of extreme gradient boosting method for evaluating the properties of episodic failure of borehole breakout

RS Benemaran - Geoenergy Science and Engineering, 2023 - Elsevier
In petroleum engineering, determining in situ stresses and breakout dimensions are crucial.
Nowadays, hydraulic fracturing is a frequently used method for identifying in stresses and …

Replacement reactions and deformation by dissolution and precipitation processes in amphibolites

F Giuntoli, L Menegon… - Journal of Metamorphic …, 2018 - Wiley Online Library
The deformation of the middle to lower crust in collisional settings occurs via deformation
mechanisms that vary with rock composition, fluid content, pressure, and temperature. These …

Sensitivity analysis of effective parameters in borehole failure, using neural network

S Jolfaei, A Lakirouhani - Advances in Civil Engineering, 2022 - Wiley Online Library
After drilling a borehole in the ground and in a rocky environment, the materials around the
borehole are crushed and separated in layers from the borehole wall; this causes the …

Protracted shearing at midcrustal conditions during large‐scale thrusting in the Scandinavian Caledonides

F Giuntoli, L Menegon, CJ Warren, J Darling… - …, 2020 - Wiley Online Library
During continental collision, large tracts of crust are mobilized along major shear zones. The
metamorphic conditions at which these zones operate, the duration of thrusting, and the …

Heterogeneity versus anisotropy and the state of stress in stable cratons: Observations from a deep borehole in Northeastern Alberta, Canada

W Wang, DR Schmitt, J Chan - Journal of Geophysical …, 2023 - Wiley Online Library
Geophysical logs collected from a deep borehole drilled into the North American Craton in
Northeastern Alberta shed valuable light on the state of stress in stable cratons. Observed …

In situ stress states at KURT, an underground research laboratory in South Korea for the study of high-level radioactive waste disposal

Y Jo, C Chang, SH Ji, KW Park - Engineering Geology, 2019 - Elsevier
Abstract The Korea Atomic Energy Research Institute Underground Research Tunnel
(KURT) is an underground research laboratory in South Korea, built for investigations into …

Image analysis of acoustic data and interpretation of rock stress orientations for geothermal exploration in Gothenburg borehole GE-1, SW Sweden

M Ask, S Pierdominici, JE Rosberg - Geological Society, London …, 2024 - lyellcollection.org
This study contributes to geothermal exploration in 1660–1520 Ma old, reworked bedrock in
Sweden. Our primary objectives are to constrain the orientation of horizontal stresses, and to …

Spatial variation of shallow stress orientation along the Hikurangi Subduction Margin: Insights from in‐situ borehole image logging

E Behboudi, DD McNamara, I Lokmer… - Journal of …, 2022 - Wiley Online Library
Abstract Knowledge of the contemporary in‐situ stress orientations in the Earth's crust can
improve our understanding of active crustal deformation, geodynamic processes, and …

Deciphering the tectonometamorphic history of subducted metapelites using quartz‐in‐garnet and Ti‐in‐quartz (QuiG–TiQ) geothermobarometry—A key for …

P Jeanneret, I Klonowska, C Barnes… - Journal of …, 2023 - Wiley Online Library
Abstract The Seve Nappe Complex is a subduction‐related high‐grade metamorphic unit
that was emplaced onto the margin of Baltica during Caledonian orogenesis. In this paper …

The Alpine Fault hangingwall viewed from within: Structural analysis of ultrasonic image logs in the DFDP‐2B borehole, New Zealand

C Massiot, B Célérier, ML Doan, TA Little… - Geochemistry …, 2018 - Wiley Online Library
Ultrasonic image logs acquired in the DFDP‐2B borehole yield the first continuous,
subsurface description of the transition from schist to mylonite in the hangingwall of the …