Downhole high resolution NMR spectroscopy with polarization...

Details Downhole high resolution NMR spectroscopy with polarization... Downhole high resolution NMR spectroscopy with polarization...

2008-05-06

2008-05-06

Shrivastav, Brij B. (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Using well logging device

C324S300000

Reexamination Certificate

active

11683764

ABSTRACT:
An apparatus and method is discussed for characterizing a fluid sample downhole of aliphatic hydrocarbon compounds, aromatic hydrocarbon compound, or connate mud filtrates containing carbon-13 isotopes using an enhanced nuclear magnetic resonance (NMR) signal on a measurement-while-drilling device. To enhance the carbon-13 NMR signal these nuclei are being hyperpolarized. Either the Overhauser Effect (OE) or the Nuclear Overhauser Effect or optical pumping and the Spin Polarization Induced Nuclear Overhauser Effect (SPINOE) can serve as a mechanism for hyperpolarization of the carbon-13 nuclei.

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Boyd M. Goodson;Advances in Magnetic Resonance, Nuclear Magnetic Resonance of Laser-Polarized Noble Gases in Molecules, Materials and Organisms, Journal of Magnetic Resonance, vol. 155, pp. 157-215 (2002).

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