A benchtop single-sided magnet with NMR well-logging tool specifications - Examples of application

Autor(es)

de Oliveira-Silva, Rodrigo ^[1] ; Lucas-Oliveira, Everton ^[2] ; de Araujo-Ferreira, Arthur Gustavo ^[2] ; Trevizan, Willian Andrighetto ^[3] ; Gea Vidoto, Edson Luiz ^[2] ; Sakellariou, Dimitrios ^[1] ; Bonagamba, Tito Jose ^[2]

Afiliação do(s) autor(es)

^[1] Katholieke Univ Leuven, Ctr Membrane Separat Adsorpt Catalysis & Spect Su, Dept Microbial & Mol Syst M2S, Leuven - Belgium

^[2] Univ Sao Paulo, Sao Carlos Inst Phys, Sao Carlos, SP - Brazil

^[3] Petrobras Res Ctr, Cenpes, Rio De Janeiro, RJ - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MAGNETIC RESONANCE; v. 322, JAN 2021.
• Citações Web of Science: 0

Resumo

This article was written in honor of Prof. Bernhard Blumich, who has heavily impacted many areas of Magnetic Resonance and, in particular, low-field and portable NMR with numerous advances, concepts, innovations, and applications of this impressive technology. Many years ago, we decided to research and develop single-sided magnets for the area of petroleum science and engineering to study oil reservoir rocks in the laboratory under well-logging conditions. The global urge to exploit oil reserves requires the analysis of reservoirs, intending to characterize the yields before starting the production. Thus, well-logging tools have been developed to estimate the quality of oil and reservoir productivity. NMR logging is included in these analytical tools, and numerous operations using this kind of device were performed since the early 1950s. To contribute to this vital research area, we show the development of a new benchtop single-sided NMR system, with well-logging tool characteristics, a cylindrical sweet spot with 4 cm of diameter and length, with magnetic field of 47 mT centered at 11 cm from the magnet's surface and a constant gradient of 35.7 G/cm along z. This system was used in self-diffusion, T-1-T-2, and D-T-2 measurements of standard liquids and rock cores, demonstrating its functionality. (C) 2020 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 12/00380-5 - Avaliação da resistência à fadiga cíclica de sistemas rotatórios e recíprocos
• Beneficiário: Idomeo Bonetti Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 09/54880-6 - Manipulação de spins nucleares através de técnicas de ressonância magnética e quadrupolar nuclear
• Beneficiário: Tito José Bonagamba
• Modalidade de apoio: Auxílio à Pesquisa - Regular