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:
May. 21, 2013
Filed:
Dec. 08, 2011
John S. Szobota, Morristown, NJ (US);
James M. Brown, Flemington, NJ (US);
Clifford C. Walters, Milford, NJ (US);
Mark M. Disko, Glen Gardaen, NJ (US);
Boris Mizaikoff, Ulm, DE;
John S. Szobota, Morristown, NJ (US);
James M. Brown, Flemington, NJ (US);
Clifford C. Walters, Milford, NJ (US);
Mark M. Disko, Glen Gardaen, NJ (US);
Boris Mizaikoff, Ulm, DE;
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
A first waveguide has a top face positioned in an oil well borehole for wetting by returning drilling mud from a drill bit as drilling progresses. A second waveguide is positioned in the borehole for wetting by new drilling mud being pumped to the drill bit. MIR light rays are fed from an MIR light source into the first and second waveguides for causing evanescent waves to be generated by each waveguide for reacting with the molecules of the associated drilling mud, respectfully, whereby a modulated optical signal representative of spectra of components and particles in the associated drilling mud, respectively, are emitted from each waveguide. The modulated optical signals are converted to electrical signals, subtracted from one another to remove common mode signals, and passed into a processor programmed for extracting the spectra hydrocarbon components contained in the returning drilling mud as the result of the drilling activity.