Micropore size analysis in oil-well cement by proton nuclear relaxation |
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| Authors: | Le Saoût Gwenn Lécolier Eric Rivereau Alain Zanni Hélène |
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| Institution: | 1. Institut Français du Pétrole, 1-4 av de Bois Préau, 92852 Rueil-Malmaison, France;2. Laboratoire de Physique et Mécanique des Milieux Hétérogènes UMR CNRS 7636, ESPCI, 10, rue Vauquelin, 75231 Paris Cedex 05, France;1. Department of Obstetrics and Gynecology, Cedars-Sinai Medical Center, Los Angeles, CA;2. California Maternal Quality Care Collaborative, Stanford University, Palo Alto, CA;3. Patient Safety, Dignity Health, San Francisco, CA;4. Maternal Fetal Medicine, Marian Regional Medical Center, Santa Maria, CA;1. Department of Obstetrics and Gynecology, Icahn School of Medicine at Mount Sinai, New York, NY;2. Department of Obstetrics and Gynecology, University of New Mexico, Albuquerque, NM;3. Department of Obstetrics and Gynecology, University Hospitals, Case Western Reserve University, Cleveland, OH;4. Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY;5. Department of Gynecology and Obstetrics, Johns Hopkins School of Medicine, Baltimore, MD;6. Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX;7. Department of Obstetrics and Gynecology, Houston Methodist Hospital, Houston, TX;8. Department of Obstetrics and Gynecology, Carilion Clinic, Roanoke, VA;9. Department of Obstetrics and Gynecology, University of Calgary, Calgary, Alberta, Canada;10. Department of Obstetrics and Gynecology, University of South Carolina Greenville, Greenville, SC;11. Department of Obstetrics and Gynecology, The Ohio State University-Wexner Medical Center, Columbus, OH;12. Center for Evidence-Based Medicine, Brown University School of Public Health, Providence, RI;13. The Institute for Female Pelvic Medicine and Reconstructive Surgery, North Wales, PA;1. Proton Medical Research Centre, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, Japan;2. Departments of Radiation Oncology, Kawasaki Medical School, Kurashiki, Japan;3. Otolaryngology Head and Neck Surgery, Kawasaki Medical School, Kurashiki, Japan;4. Radiation Oncology Research Laboratory, Research Reactor Institute, Kyoto University, Osaka, Japan;1. National Atomic Energy Commission (CNEA), Avenida Del Libertador, 8250 Ciudad de Buenos Aires, Argentina;2. National Council of Scientific and Technological Research (CONICET), Avenida Rivadavia, 1970 Ciudad de Buenos Aires, Argentina |
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| Abstract: | The durability of cement depends mainly on cement microstructure parameters such as pore size distribution. In this study, we have observed pore size distribution in a Class G oil-well cement immersed for 1 year in brine at T = 293 K, P = 10(5) Pa and in a down-hole condition at T = 353 K, P = 7.10(6) Pa by proton nuclear magnetic spin-lattice relaxation (1H-NMR). After 4 months of immersion at T = 293 K, P = 10(5) Pa, the distribution of discrete relaxation rates reveals the fractal feature of the pore size distribution, whereas after 1 year at T = 353 K, P = 7.10(6) Pa, a dispersed distribution is still observed. |
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