E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 49/08 (2006.01) E21B 49/00 (2006.01) G01N 33/00 (2006.01) G01N 33/28 (2006.01)
Patent
CA 2236615
Apparatus and process is provided for establishing values of the quality of gaseous hydrocarbons in gas extracted from mud while drilling. Two rare earth sensors, without a coating, are exposed to the extracted gas. The first sensor is pre-calibrated and outputs a signal proportional to the relative concentration of light hydrocarbons. The second sensor is pre-calibrated and outputs a signal proportional to the relative concentration of heavy hydrocarbons. Preferably a second sensor is selected which, during calibration outputs a signal which is also proportional to the relative concentration of light hydrocarbons in a light sample gas and outputs a signal which is inversely proportional to the relative concentration of heavy hydrocarbons in a heavy sample gas. The difference of the two signals is obtained and is compared to the first sensor signal as being indicative of the quality of any hydrocarbons present in the extracted gases.
Canadian Logging Systems Inc.
Na
Zamfes Konstandinos S.
LandOfFree
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