Zobrazeno 1 - 10
of 10
pro vyhledávání: '"C. S. El Mohtar"'
Publikováno v:
Journal of Natural Gas Science and Engineering. 55:174-181
Mudcake buildup has a direct impact on expensive drilling and production problems, such as wellbore instability, pipe sticking, formation damage, and impairment of wellbore logging interpretation. Therefore, a better understanding of filtration and m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46fa071ca2e80cbe17bc4a61dd3d3e80
https://doi.org/10.1016/j.jngse.2018.05.001
https://doi.org/10.1016/j.jngse.2018.05.001
Publikováno v:
Journal of Natural Gas Science and Engineering. 38:1-11
This paper presents an experimental investigation and modeling of filtration and mudcake buildup during wellbore drilling. Extensive studies have been performed on this topic over the past seven decades and their general findings are summarized. In p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87a14cd8b27529bc20d388cab0135e77
https://doi.org/10.1016/j.jngse.2016.12.013
https://doi.org/10.1016/j.jngse.2016.12.013
Autor:
J. Dafni, M. Yashinsky, Alejandro Martínez, C. S. El Mohtar, Juan M. Mayoral, Menzer Pehlivan, Kevin W. Franke, Pedro Arduino, Anne Lemnitzer
Publikováno v:
Soil Dynamics and Earthquake Engineering. 141:106430
Lifelines and infrastructure systems are among the most critical operational components of an urban environment to ensure a minimum level of post-earthquake economic and societal functionality following major seismic events. The overall performance o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::945c38b86a29be784f03c854486bf9ba
https://doi.org/10.1016/j.soildyn.2020.106430
https://doi.org/10.1016/j.soildyn.2020.106430
Publikováno v:
Géotechnique. 64:108-117
The paper examines the effect of small percentages of bentonite on pore pressure generation in loose sands, from small strains all the way to liquefaction. It relies on resonant column, static triaxial and cyclic triaxial tests conducted on specimens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c4c1f02920f798c73877bea8c3b4b18
https://doi.org/10.1680/geot.12.p.169
https://doi.org/10.1680/geot.12.p.169
Autor:
R. Sangroya-Kundu, C. S. El Mohtar
Publikováno v:
Geotechnical Testing Journal. 43:20180185
A simple, inexpensive and quick method for measuring the van Genuchten soil water retention curve (SWRC) model parameters for cohesionless soil is presented. The proposed method is an integration of laboratory testing and numerical modeling. The expe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73100b48582878a98ddd76a5b2136303
https://doi.org/10.1520/gtj20180185
https://doi.org/10.1520/gtj20180185
Publikováno v:
Journal of Geotechnical and Geoenvironmental Engineering. 139:1369-1380
Ottawa sand specimens premixed with 0, 3, and 5% bentonite by dry mass of sand were tested under undrained static and cyclic loading to investigate the effects of bentonite on the static and cyclic shear strength of the sand. The results show that al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e773864c4ffb4942aad04645e8174891
https://doi.org/10.1061/(asce)gt.1943-5606.0000865
https://doi.org/10.1061/(asce)gt.1943-5606.0000865
Publikováno v:
GeoCongress 2012.
In situ capping of contaminated sediments in rivers, lakes and ponds has been successfully used to contain the contaminants in sediments and prevent water contamination. While capping is a good alternative for remediation, the cap load may cause cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3f6ce716af8c38707e9b98cd8a33303
https://doi.org/10.1061/9780784412121.422
https://doi.org/10.1061/9780784412121.422
Publikováno v:
Geo-Frontiers 2011.
The yield stress and viscosity of bentonite suspensions treated with Sodium Pyrophosphate (SPP) were measured to investigate the applicability of modified bentonite suspensions as a permeation grout. The yield stress and viscosity were significantly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cb0dc425c39d86523b3169b1db5226c
https://doi.org/10.1061/41165(397)141
https://doi.org/10.1061/41165(397)141
Publikováno v:
Geo-Frontiers 2011.
The undrained shearing properties of sand permeated with bentonite suspensions are studied to investigate the use of bentonite suspensions for static liquefaction mitigation. Rheological tests are performed to evaluate the penetrability and the thixo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a125ef59caa32715c49378b68a9ec11
https://doi.org/10.1061/41165(397)70
https://doi.org/10.1061/41165(397)70
Autor:
Antonio Bobet, Marika Santagata, C. S. El Mohtar, Julia P. Clarke, Cliff T. Johnston, Vincent P. Drnevich
Publikováno v:
Geotechnical Earthquake Engineering and Soil Dynamics IV.
Saturated specimens of Ottawa sand prepared with 0%, 3% and 5% bentonite by dry mass of sand are tested under cyclic loading to investigate the effects of bentonite on the cyclic response. For the same skeleton relative density and cyclic stress rati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5af04da14d0b03cd90218b4d3ce6729e
https://doi.org/10.1061/40975(318)63
https://doi.org/10.1061/40975(318)63