08058071 is referenced by 6 patents and cites 20 patents.

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.

Title
Downhole spectroscopic hydrogen sulfide detection
Application Number
13/9424
Publication Number
8058071 (B2)
Application Date
January 19, 2011
Publication Date
November 15, 2011
Inventor
Rogerio Tadeu Ramos
Hampshire
GB
Timothy Gareth John Jones
Cottenham
GB
Albert Ballard Andrews
Wilton
CT, US
Kosta Ladavac
Somerville
MA, US
Jimmy Lawrence
Cambridge
MA, US
Ronald E G Van Hal
Watertown
MA, US
Bhavani Raghuraman
Wilton
CT, US
Christopher Harrison
Auburndale
MA, US
Gale H Gustavson
Brookfield
CT, US
Oliver C Mullins
Ridgefield
CT, US
Li Jiang
Newton
MA, US
Agent
Brigid Laffey
Rachel E Greene
Assignee
Schlumberger Technology Corporation
MA, US
IPC
G01N 33/24
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