Patent ID: 6645769
Filing Date: 2003-11-11
Classification: C09K,E21B,G01N,G01V,Y10T

Abstract:
A method of monitoring hydrocarbon and water production from different production zones/sections in a hydrocarbon reservoir and/or injection wells and detection of different phenomena, the method comprising:dividing regions around wells in the reservoir into a number of zones/sections; injecting or placing specific tracers with unique characteristics for each zone/section into a formation in these regions such that the tracers are placed as integrated parts of the well completion or placed and immobilized in these regions through injection, squeeze or by other techniques, or the tracers can be immobilized or placed on a filter, a casing or constructions surrounding the well in each zone/section, the tracers being specific or introduced to provide specific information from each zone/section; chemically immobilizing or integrating the tracers in the formation, constructions or filters around the wells, the tracers being chemically intelligent and released as a function of specific events; immobilizing or integrating the tracers by using a polymer designed to adhere to the formation, the constructions or the filters, wherein the tracers are covalently linked or linked by ionic interactions to the polymers, and the tracers can also be contained in the polymer matrix; and detecting the tracers downstream so as to provide information about the various zones/sections.