The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2012
Filed:
Sep. 19, 2011
Richard L. Cline, Missouri City, TX (US);
Xiang Liu, Phoenix, AZ (US);
Gregory M. Sanger, Chico, CA (US);
Charles E. Smith, Liguna Niguel, CA (US);
Xin Zhou, Rancho Cucamonga, CA (US);
Richard L. Cline, Missouri City, TX (US);
Xiang Liu, Phoenix, AZ (US);
Gregory M. Sanger, Chico, CA (US);
Charles E. Smith, Liguna Niguel, CA (US);
Xin Zhou, Rancho Cucamonga, CA (US);
SpectraSensors, Inc., Rancho Cucamonga, CA (US);
Abstract
Thermodynamic properties of a natural gas stream can be determined in real time utilizing modeling algorithms in conjunction with one or more sensors for quantifying physical and chemical properties of the natural gas. A first data signal produced by a first sensor can include intensity as a function of wavelength. At least one region in the wavelength range outside of a selected absorption transition can be fitted to a function to obtain a zero-absorption baseline, and a carbon dioxide concentration can be determined based on a line strength at the selected absorption transition corrected by the zero-absorption baseline. A total hydrocarbon concentration in the gas stream can be inferred based on a database of characteristic natural gas concentrations, and an algorithm can be implemented that determines an energy content of the gas stream. Related techniques, apparatus, systems, and articles are also described.