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Hydrocarbon Gas Measurements Using Nuclear Magnetic Resonance

Abstract: 

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.

Patent Number: 
5,122,746
Date Of Issue: 
06/16/1992
Inventors: 

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