Advanced science.  Applied technology.


Hydrocarbon Gas Measurements Using Nuclear Magnetic Resonance: 5,122,746


A method of using a transient NMR response signal to determine physical properties of gases, specifically calorific content and compressibility, while the gas is in-line. The amplitude of the free induction decay signal, as well as relaxation time constants, are used to identify components of a gas mixture and to determine relative composition. This data is then used to calculate calorific value and compressibility as a function of the hydrogen content of components of the gas rather than as a function of the total hydrogen content of the gas.

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James D. King; William L. Rollwitz; Colin I. Nichols; Armando De Los Santos