IN DOWNHOLE LOGGING

DOWNHOLE LOGGING MONITORS THE STRATA IN EXPLORARTORY OIL AND NATURAL GAS WELLS. IT IS A CRITICAL ELEMENT IN THE SEARCH FOR NEW HYDROCARBON RESERVES. THE TEMPERATURES IN THESE WELLS OFTEN EXCEED 250 DEGREES C WHICH SIGNIFICANTLY LIMITS THE SENSORT, INSTRUMENTATION, DATA STORAGE AND DATA TRANSMISSION COMPONENTS WHICH CAN BE USED. THIS PROPOSAL ADDRESSES THE APPLICATION OF MMR TECHNOLOGIES' NOVEL PROPRIETARY MICROMINIATURE REFRIGERATION TECHNOLOGY TO THIS HIGH AMBIENT TEMPERATURE COOLING PROBLEMS. IN A SENSE, MMR HAS MINIATURIZED STANDARD REFRIGERATION PLUMBING TO PRODUCE GAS REFRIGERATORS WHICH USE A VARIETY OF REFRIGERANTS TO PROVIDE COOLING AT TEMPERATURES RANGING FROM 100 DEGREES C DOWN TO -196 DEGREES C. THESE REFRIGERATORS ARE CURRENTLY LIMITED TO AMBIENT TEMPERATURES BELOW 150 DEGREES C DUE TO CONSTRUCTION MATERIALS USED IN THE COMPRESSORS. PHASE I OF THIS PROPOSAL WILL BE A STUDY OF POSSIBLE ALTERNATIVE HIGH TEMPERATURE MATERIALS FOR THE COMPRESSOR AND THEN THE DEVELOPMENT AND EVALUATION OF ONE ORTWO HIGH TEMPERATURE COMPRESSORS. PHASE II WILL ENTAIL THE CONSTRUCTION AND TESTING OF A COMPLETE SINGLE STAGE, CLOSED CYCLE REFRIGERATOR FOR COOLING TO NORMAL AMBIENT TEMPERATURES IN A 300 DEGREE C ENVIRONMENT. A SECOND MULTI-STAGE REFRIGERATOR FOR COOLING SPECIALIZED SENSORS DOWN TO -196 DEGREES C WILL ALSO BE DEVELOPED.