A method for determining a property of earth formations surrounding a borehole, including the following steps: isolating a region of the borehole, and obtaining a sample of borehole fluid from the isolated region; and implementing measurements, dowhole, of the Raman scattering of electromagnetic energy...http://www.google.com.au/patents/US20080111064?utm_source=gb-gplus-sharePatent US20080111064 - DOWNHOLE MEASUREMENT OF SUBSTANCES IN EARTH FORMATIONS
