In SituNMR Analysis of Fluids Contained in Sedimentary Rock

✍ Scribed by Thomas M. de Swiet; Marco Tomaselli; Martin D. Hürlimann; Alexander Pines

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 122 KB
• Volume: 133
• Category: Article
• ISSN: 1090-7807
• DOI: 10.1006/jmre.1998.1459

✦ Synopsis

Limitations of resolution and absorption in

standard chemical spectroscopic techniques have made it difficult to study fluids in sedimentary rocks. In this paper, we show that a chemical characterization of pore fluids may be obtained in situ by magic angle spinning (MAS) nuclear magnetic resonance (NMR), which is normally used for solid samples. 1 H MAS-NMR spectra of water and crude oil in Berea sandstone show sufficient chemical shift resolution for a straightforward determination of the oil/water ratio.