Borehole breakout evolution through acoustic emission location analysis

G Dresen, S Stanchits, E Rybacki - … Journal of Rock Mechanics and Mining …, 2010 - Elsevier
A series of thick-wall cylinder tests were performed on Bentheim sandstone to investigate
the nucleation and propagation of borehole breakouts. Isotropic compression tests showed …

[HTML][HTML] Numerical simulation on borehole breakout and borehole size effect using discrete element method

H Lin, WH Kang, J Oh, I Canbulat… - International Journal of …, 2020 - Elsevier
Estimation of horizontal stress magnitudes from borehole breakouts has been an attractive
topic in the petroleum and mining industries, although there are critical research gaps that …

Experimental study on borehole size effect and prediction of breakout initiation stress

H Lin, J Oh, I Canbulat, B Hebblewhite… - International Journal of …, 2021 - Elsevier
Borehole breakout initiation stress is critical for mining and geotechnical engineering as it
indicates horizontal stress magnitudes and rock quality in a specific layer. This stress can be …

Size dependency of hollow-cylinder stabiliy

PJ Van den Hoek, DJ Smit, AP Kooijman… - SPE/ISRM Rock …, 1994 - onepetro.org
The hollow-cylinder (HC) test is an important means of assessing openhole stability during
drilling, completion and production. This paper reviews experimental and theoretical work …

Openhole stability and sanding predictions by 3D extrapolation from hole-collapse tests

RT Ewy, P Ray, CA Bovberg, PD Norman… - SPE Drilling & …, 2001 - onepetro.org
Wellbore failure is best simulated in the laboratory by subjecting a model hole to simulated
in-situ stresses. A jacketed, thick-walled, hollow cylinder is subjected to increasing pressure …

In situ stress assessment based on width and depth of brittle borehole breakouts

E Gerolymatou, A Petalas - Recent developments of soil mechanics and …, 2020 - Springer
Borehole breakouts, as well as breakouts in tunnels and shafts, are a common occurrence,
especially under high in situ stresses or stress states with high deviatoric component …

Scale effects in hollow cylinder tests

J Enever, W Bailin - Frontiers of Rock Mechanics and Sustainable …, 2020 - taylorfrancis.com
Two types of tests conducted routinely on hollow cylinders are splitting tests and collapse
tests. In the former case, a hollow cylindrical sample is pressurised internally until a fracture …

Effects of Anisotropy on Borehole Stability

E Gerolymatou, J Leuthold - Recent Developments of Soil Mechanics and …, 2024 - Springer
Borehole integrity is a critical concern in drilling operations, as failure induced by stress
redistribution poses a significant threat to both the borehole's stability and economic viability …

Relationship between thick-walled cylinder and unconfined compressive strength for application in sanding prediction

B Wu, CP Tan - ARMA North America Rock Mechanics Symposium, 2000 - onepetro.org
ABSTRACT ABSTRACT: A series of thick-walled cylinder (TWC) and unconfined
compressive strength (UCS) tests were conducted on downhole and surface sandstones …

[图书][B] Geomechanics of sand production and sand control

N Morita - 2022 - books.google.com
Geomechanics of Sand Production and Control delivers a convenient resource for both
academia and professionals to gain understanding and results surrounding sand …