E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/08 (2006.01)
Patent
CA 2623526
The present invention provides a method and apparatus for performing elemental analysis of a formation fluid downhole. The present invention provides elemental analysis of a formation fluid downhole using breakdown spectroscopy. In one aspect of the invention, a method and apparatus are provided for performing laser induced breakdown on a formation fluid sample is provided. In another aspect of the invention a method and apparatus are provided for performing spark induced breakdown spectroscopy. Plasma is induced in a fluid under test downhole. Emissions from the plasma are analyzed to determine the elemental composition of the fluid under test. Emissions include but are not limited to light in the ultraviolet, visible, and near infrared regions of the spectrum. A spectrometer is provided for elemental analysis of a fluid downhole. Elemental analysis yields information about the fluid and the formation from which the fluid originated.
L'invention concerne un procédé et un appareil permettant d'effectuer une analyse élémentaire d'un fluide de formation fond de trou. L'invention permet l'analyse élémentaire d'un fluide de formation fond de trou par spectroscopie d'émission optique sur plasma. Dans un aspect, le procédé et l'appareil de l'invention permettent d'effectuer une décharge disruptive induite par laser sur un échantillon de fluide de formation. Dans un autre aspect, le procédé et l'appareil de l'invention permettent la mise en oeuvre d'une spectroscopie d'émission optique induite par une étincelle. Le plasma est induit dans un fluide à tester au fond du trou. On analyse les émissions du plasma pour déterminer la composition élémentaire du fluide à tester. Les émissions comprennent, de manière non limitative, la lumière dans les régions ultraviolettes, visibles et infrarouges du spectre. Un spectromètre permet l'analyse élémentaire d'un fluide fond de trou. L'analyse élémentaire fournit des informations concernant le fluide et concernant la formation d'où provient le fluide.
Baker Hughes Incorporated
Cassan Maclean
LandOfFree
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