Patent ID: 6691780
Filing Date: 2004-02-17
Classification: C09K,E21B,Y10S

Abstract:
A method of treating a subterranean formation having multiple zones penetrated by a well bore comprising:providing a plurality of particulate compositions comprising a particulate material and a tracking material, wherein the tracking material is selected from the group consisting of substantially non-radioactive metals, substantially non-radioactive metal oxides, substantially non-radioactive metal sulfates, substantially non-radioactive metal carbonates, substantially non-radioactive metal phosphates, substantially non-radioactive metal salts of organic acids, phosphorescent pigments, fluorescent pigments, photoluminescent pigments, oil soluble dyes, oil dispersible dyes and oil dispersible pigments, and wherein each particulate composition comprises a different tracking material; introducing a different particulate composition into each zone in the subterranean formation through a well bore; flowing fluid back from the subterranean formation and collecting at least a portion of any particulate compositions which flow back from the subterranean formation; and identifying particulate compositions returned by detecting the tracking compositions.