the top section of the Alcor reservoir, which is separated from the untreated oilbya sealed piston, thereby allowing for once-through operation. The system is pressurized with nitrogen at 400-500 psig prior to each test run to ensure gases remain dissolved in the oil during the test. The rod is electrically heated to preset temperatures and held constant throughout the run. The rod surface temperature for the tests is370 ° C. (698 ° F.). Thermocouple readings are recorded for the bulk fluid inlet and outlet temperatures and for the surface of the rod. The heated surface thermocouple is positioned inside the rod. [0045]During the fouling tests, asphaltenes deposit on the heated surface and are thermally degraded to coke, which builds upon the surface of the test rod. The coke deposit causes
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