Patent ID: 8322414

Claim:
A method of determining the effectiveness of one or more compartmentalization seals in providing a water-tight barrier to isolate a hydrocarbon inflow control device forming the terminus of a section of production tubing that is positioned in the toe end of a subterranean open-hole well section of reservoir rock, the production tubing extending to the earth's surface, the method comprising: a. securing a first length of marker tubing to the inflow control device, the outer surface of the marker tubing being coated with water-soluble and oil-soluble tracer compositions, each having a first set of known characteristics; b. securing a first open-hole packer about the outer surface of said first marker tubing, said packer extending radially outwardly from said outer surface to contact the surrounding reservoir wall to thereby create a first flowing compartment containing said inflow control device at the toe end of the well and a second non-flowing compartment containing the portion of said first marker tubing coated with tracer compositions; c. extracting a hydrocarbon fluid stream from the reservoir rock through the inflow device and the production tubing and producing the hydrocarbon fluid stream at the earth's surface; and d. testing the hydrocarbon stream at the earth's surface for the presence of said tracer compositions in order to determine the effectiveness of the compartmentalization of said open-hole well section by the open-hole packer.