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US 5,306,640 AGranted
Method for determining preselected properties of a crude oil
AssigneeShell Oil Company
InventorsHarold J. Vinegar, Pierre N. Tutunjian
Life of this patent
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Abstract
Methods are provided for using Nuclear Magnetic Resonance (NMR) spectroscopy to measure the bulk volume of oil and water in the polyurethane liner of sponge core. The method is accurate, rapid, and non-destructive. It provides information simultaneously in oil composition and viscosity.
Claims5
A method of obtaining a preselected property of a crude oil from a sample inside a porous medium which sample contains both crude oil and water, comprising the steps of:
- differentiating between crude oil and water based on frequency-resolved chemical shift NMR spectroscopy of said crude oil and water in said porous medium;
- and
- determining the preselected property of said crude oil from an NMR measured parameter in the chemical shift spectrum.
Dependencies are inferred from the claim text.