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:
Nov. 15, 2011
Filed:
Jan. 19, 2011
LI Jiang, Newton, MA (US);
Oliver C. Mullins, Ridgefield, CT (US);
Gale H. Gustavson, Brookfield, CT (US);
Christopher Harrison, Auburndale, MA (US);
Bhavani Raghuraman, Wilton, CT (US);
Ronald E. G. Van Hal, Watertown, MA (US);
Jimmy Lawrence, Cambridge, MA (US);
Kosta Ladavac, Somerville, MA (US);
Albert Ballard Andrews, Wilton, CT (US);
Timothy Gareth John Jones, Cottenham, GB;
Rogerio Tadeu Ramos, Hampshire, GB;
Li Jiang, Newton, MA (US);
Oliver C. Mullins, Ridgefield, CT (US);
Gale H. Gustavson, Brookfield, CT (US);
Christopher Harrison, Auburndale, MA (US);
Bhavani Raghuraman, Wilton, CT (US);
Ronald E. G. Van Hal, Watertown, MA (US);
Jimmy Lawrence, Cambridge, MA (US);
Kosta Ladavac, Somerville, MA (US);
Albert Ballard Andrews, Wilton, CT (US);
Timothy Gareth John Jones, Cottenham, GB;
Rogerio Tadeu Ramos, Hampshire, GB;
Schlumberger Technology Corporation, Cambridge, MA (US);
Abstract
Methods and related apparatuses and mixtures are described for detecting hydrogen sulfide in a formation fluid downhole. A detection mixture is combined with the formation fluid downhole. The detection mixture includes metal ions for reacting with hydrogen sulfide forming a metal sulfide, and charged nanoparticles sized so as to inhibit significant aggregation of the metal sulfide so as to enable spectroscopic detection of the metal sulfide downhole. The combined mixture and formation fluid is then spectroscopically interrogated so as to detect the presence of the metal sulfide thereby indicating the presence of hydrogen sulfide in the formation fluid. The mixture also includes chelating ligands for sustaining thermal endurance of the mixture under downhole conditions.