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Keywords: cementation
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Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0815
... generating artificially cemented rocks with improved stiffness/strength properties. A key challenge in practical implementation of this technology is determining the percentage of the produced bio-cement and characterization of the resulting weakly consolidated rocks. Non-destructive techniques (NDT...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0009
... ABSTRACT: Composed of gravel, matrix and the cementation surface, glutenite is different from fine-grained homogeneous reservoirs such as sandstone and shale in meso-structure. This unique structure inevitably leads to different fracture propagation characteristics. In order to study...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0632
... ABSTRACT: The transitional nature of the so-called soft sandstones presents challenges to the understanding of their mechanical response and to the safety of storage and extraction operations. This paper aims to analyse and interpret fluid injection experiments in artificially cemented...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0399
... ABSTRACT: Beachrock is a sedimentary formation where coastal sediments have been cemented by calcium carbonate polymorphs. Beachrocks have a positive impact on beaches vulnerable to erosion, as they are capable of armouring the beaches from strong waves. This study was aimed at building...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0406
... ABSTRACT: Surface instability of residual soil slope due to erosion is one of the widespread issues all over the world. Bio-cementation is a novel soil improvement method, wherein urease-producing bacteria or urease enzyme can be used to bind sand particles through calcite formation...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1711
... Upstream Oil & Gas in-situ ae AE event borehole plane in-situ acoustic emission frequency range sensor kHz nakatani cementation experiment naoi plenker excavation AE sensor 1. INTRODUCTION For the safe use of underground structures like mines monitoring of their conditions...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1975
... ABSTRACT: During the long-term operation phase of storage caverns there occur convergence-induced additional stresses within the construction of a cavern well (casing, annulus cementation), especially in the lower part of the well. These additional stresses may lead to a local loss of well...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-1044
... hydraulic fracturing stress ratio cementation interaction map fracture Upstream Oil & Gas Simulation stress parameter fracture propagation matrix Blanton stress contrast propagation hydraulic fracture propagation natural fracture absolute stress contrast hydraulic fracture interaction...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0387
... ABSTRACT: Coquina is a historic building stone from the First Coast of Florida which has been used since the mid-1500s for both military and residential construction. Coquina is a limestone consisting of shells cemented with calcium carbonate and quartz sand. Split tension testing...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0302
... & Gas cementation drilling fluid chemistry drilling fluid property Reservoir Characterization drilling fluids and materials goethite coating particle coating particle evolution experiment configuration gouge material concentration reservoir geomechanics normal stress drilling fluid...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-583
... -related alteration, but few quantitative studies have been performed to fully investigate the mechanism. Based on the hypothesis that CO 2 alters the integrity of rock structure by changing cements rather than grains, we attempt to explain the degradation of cementation due to long-term contact with CO 2...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-705
... factors that control carbonate grainstone rock strength: (1) porosity and degree of cementation; (2) age and degree of exposure to meteoric fluids, and (3) degree of vadose zone weathering. Collected UCS data shows a strong relationship between degree of cementation associated with proximity to weathered...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-143
... experiments [3, 4, 5, 6, 7, 8] at more challenging and expensive conditions. international journal cementation elevated temperature cored interval uniaxial compression test geomechanical characteristic poisson mining science experimental assessment characteristic rock mechanics gmu reservoir...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7397
... Abstract Laboratory experiments have been performed to simulate in situ and core compaction behavior of soft reservoir sandstones. Fine-grained synthetic sandstones have been manufactured under simulated in situ stress conditions with various cement contents. A systematic study shows...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-198
..., particularly tunnels, are in shaly materials (Einstein, 2000). Many landslides have occurred in shales (e.g., Wright and Duncan, 1972; Skempton et al., 1989; Picarelli et al., 2005). Shales exhibit behavior that is intermediate of soft clays and hard cemented rocks (Johnston and Novello, 1994). They are formed...
Proceedings Papers

Paper presented at the Alaska Rocks 2005, The 40th U.S. Symposium on Rock Mechanics (USRMS), June 25–29, 2005
Paper Number: ARMA-05-684
... potential of rock, among which are the rock fabric (such as mineral component, detritus content, grain size, rock texture, cement content, cementation type and so on), the formation conditions, bedding environments, ground stresses, surrounding rock properties, temperature and moisture. The rock fabric...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-0003
...Rock Mechanics in the National Interest, Elsworth, Tinucci & Heasley (eds), ¸ 2001 Swets & Zeitlinger Lisse, ISBN 90 2651 827 7 Mechanical and acoustic properties of weakly cemented granular ocks S.Nakagawa & L.R.Myer Earth Sciences Division, E.O.. Lawrence Berkeley National Laboratory, Berkeley...
Proceedings Papers

Paper presented at the The 35th U.S. Symposium on Rock Mechanics (USRMS), June 5–7, 1995
Paper Number: ARMA-95-0169
... Upstream Oil & Gas Wellbore Design cementation dynamic mechanical property wellbore integrity Rock mechanics dynamic static modulus ratio Poisson strain amplitude modulus ratio mechanical property hysteresis static dynamic difference sandstone loading Reservoir...
Proceedings Papers

Paper presented at the The 33rd U.S. Symposium on Rock Mechanics (USRMS), June 3–5, 1992
Paper Number: ARMA-92-0959
...%, and modulus of uniaxial compaction near i GPa); and iii) create specimens with a brittle cement similar to that found in real sandstones. This constraint implies that organic bonding agents like epoxy (Rathore et al, 1989) can not be used. The specimens have been formed by mixing sand (of the same grain size...
Proceedings Papers

Paper presented at the The 32nd U.S. Symposium on Rock Mechanics (USRMS), July 10–12, 1991
Paper Number: ARMA-91-375
... flow in porous media cementation Upstream Oil & Gas permeability sandstone Reservoir Characterization strength porosity Fluid Dynamics sensitivity stress influence flow direction reduction permeability anisotropy stress-induced permeability reduction permeability Permeability...

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