Abstract: An armored spring-core superconducting cable (12) is provided. The armored spring-core superconducting cable (12) may include a spring-core (20), at least one superconducting strand (24) wound onto the spring-core (20), and an armored shell (22) that encases the superconducting strands (24). The spring-core (20) is generally a perforated tube that allows purge gases and cryogenic liquids to be circulated through the armored superconducting cable (12), as well as managing the internal stresses within the armored spring-core superconducting cable (12). The armored shell (22) manages the external stresses of the armored spring-core superconducting cable (12) to protect the fragile superconducting strands (24). The armored spring-core superconducting cable (12) may also include a conductive jacket (34) formed outwardly of the armored shell (22).

Abstract: A magnetic resonance logging instrument is provided. The magnetic resonance logging instrument (10) may comprise a superconducting magnet system (12) operable to produce a static magnetic field and disposed within a housing (19). An antenna system (14) operable to produce and sense a radio frequency magnetic field may be disposed, in part, within the housing (19) and coupled to the superconducting magnet system (12). A cryogenic cooling system (16) operable to cool the superconducting magnet system (12) may also be disposed within the housing (19). A power system (18) operable to supply power to the superconducting magnet system (12), the antenna system(14), and the cryogenic cooling system(16) may also be provided.