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Keywords: stress measurement
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1939
... series taylor & francis group reservoir characterization fairhurst ishida françois cornet cornet determination tsuyoshi stress field stress measurement françois university ARMA 21 1939 Plan of publishing François Cornet's book based on the manuscript he left us Ishida, T. OYO...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1205
... field in complex case study, where the measured vertical stresses are in disagreement with the overburden weight and the exploited coal seam dips with 10° in which numerous in-situ stress measurements were carried out. The measured principal stresses in the current case study are highly heterogeneous...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2069
... ABSTRACT: Hydraulic fracturing (HF) is only one method which has been standardized so far as a method of in-situ stress measurement available at depths more than 50 m. The maximum and minimum stresses in a plane perpendicular to a borehole is estimated by combining the reopening pressure...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0078
... generated for several fields on the Norwegian Continental Shelf based on the operator's database of high-quality stress measurements. Standard methods are used to (straight-line) interpolate between measured points to provide a “continuous” stress curve through the subsurface. A best practice is described...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0325
... of the databases of more than 640 retreat mining case histories from various U.S. coal mines. In this study, stress measurements from U.S. and Australian coal mines were back analyzed using the square decay stress distribution method, and the abutment angles are investigated. The results of the analyses indicated...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0254
... in formations adjacent to unconventional reservoirs, we have combined laboratory studies of viscoplastic creep with numerical modeling utilizing in an attempt to match a profile of least principal stress measurement with depth in an actual case study. Creep experiments were conducted on core samples from...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0467
... Magnitude prediction weiyuan region information shale gas reservoir stress measurement fault network deformation elastic model 1. INTRODUCTION The understanding of in situ stresses is very important in the oil and gas exploitation including wide engineering fields such as drilling, stimulation...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1878
... can be used to estimate the far-field stress. The calculations show that given a large number of local stress measurements, their Euclidean mean gives a close approximation of the far-field stress state. Whereas when only a limited number of local stresses are available, the probability of obtaining...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-672
... specimen funato Reservoir Characterization orientation diameter sidewall core drilling operation variation MPa Upstream Oil & Gas borehole smin main hole DCDA stress measurement in-situ stress deformation laboratory experiment Magnitude perpendicular 1. INTRODUCTION Geomechanical...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-635
... stiffness FEM model Ground Support failure mechanism stress measurement high horizontal stress reservoir geomechanics mechanism representation rock mass stiffness 1. INTRODUCTION Room and pillar mining in sedimentary rocks present specialized challenges in rock mechanics, due to the high...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-893
... ABSTRACT: Obtaining reliable estimates of u stress, particularly principal stresses, is crucial for robust rock engineering design. However, due to the stress variability inherent in fractured rock masses, a key question that arises in practice is that of how many stress measurements...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0733
... orientation variation minimum principal stress geothermal reservoir biaxial test borehole principal stress magnitude Magnitude elastic parameter anisotropy stress measurement principal stress rock mass fracture 1. INTRODUCTION To accelerate the development of Enhanced Geothermal System (EGS...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0962
...) experiment. The main goal of this stress measurement campaign was to estimate the magnitude and orientation of the in-situ principal stresses, to understand the variation of the minimum stress towards existing shear zones, and to estimate the jacking pressure required to open existing fractures...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0430
... conclusions to be drawn regarding the state of stress in the region. Reservoir Characterization orientation reservoir geomechanics information Upstream Oil & Gas British Columbia horizontal stress stress measurement Coast Range Mountain stress estimation principal stress situ stress...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0651
... ABSTRACT: We conducted a series of u stress measurements in a 100-meter deep hole (kISMET 003) drilled vertically from the 4850-ft level (1478-meters depth) of the Sanford Underground Research Facility (SURF) located in Lead, South Dakota. We used the method of hydraulic fracturing for u...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-843
... to available direct or indirect field measurements. Traditionally, stress measurements are acquired as part of drilling operations to pressure test casing shoes. However, availability of high quality data in deep water environments is very limited because of various operational constraints and concerns over...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7466
... axes. The model results demonstrate large variations of stress orientations, which cannot be captured by small numbers of classical stress measurements. In-situ stress measurements support exfoliation fracture formation under compression and principal stress directions as inferred from our numerical...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7438
... Abstract Downsizing an overcoring diameter to 60 mm (BX), the Compact Conical-ended Borehole Overcoring technique (BX CCBO) proved suitable for adverse conditions and difficult access from surface in deep levels South African gold mines. BX CCBO in-situ stress measurements have been carried...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7053
... Abstract We present in this paper two examples on two different scales (in borehole and regional), in which stress magnitudes might be influenced by the presence of fractures and faults. Hydraulic fracturing in situ stress measurements conducted in a borehole showed a large fluctuation...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-163
... using multiple sources: seafloor subsidence from GPS and bathymetry, reservoir compaction data from 4D seismic, pore pressure and stress measurement over time, individual well geomechanical models, history of bottom hole flowing pressure, and production of oil, water, and gas from wells and the field...

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