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| Number | Title | Issue Date |
| 7427504 | Determining fluid chemistry of formation fluid by downhole reagent injection spectral analysis A method for analyzing formation fluid in earth formation surrounding a borehole includes storing analytical reagent in a reagent container in a fluids analyzer in a formation tester and moving the formation tester, including the reagent, downhole. Reagent from the ... | 09/23/2008 |
| 7366615 | Methods and apparatus using both nuclear capture and inelastic spectroscopy in deriving elemental concentrations Methods and apparatus are provided for determining the content of a first element in a formation which cannot otherwise be determined via a capture spectrum measurement. The methods and apparatus utilize the inelastic spectrum measurement of the first element and th... | 04/29/2008 |
| 7279678 | Method and apparatus for composition analysis in a logging environment Methods and apparatus for analyzing a hydrocarbon mixture are disclosed, comprising at least one light-emitting diode (LED) and at least one photodetector positioned to detect energy transmitted by the LED through a sample of the hydrocarbon mixture. In at least one... | 10/09/2007 |
