HARDWARE AND METHODOLOGICAL AUTONOMOUS COMPLEX FOR LOGGING OF HOLES ON DRILL PIPES Russian patent published in 1999 - IPC

FIELD: geophysics. SUBSTANCE: invention is meant for conducting complex of geophysical investigations of horizontal holes during search and prospecting for deposits of mineral resources, for simultaneous resistivity and radioactive logging, inclinometry, etc. Proposed complex includes autonomous geophysical modules interjoined in assembly to which upper part fixture for connection of assembly to string of drill pipes is linked to expand set of employed methods by way of free formation of assembly of autonomous modules, reduction of time and cost of geophysical investigations. Complex is additionally fitted with shut-off fixture and fairing with circulation holes whose lower end has location seat and whose upper end carries coupling to join it to drill pipe. Fixture for connection of assembly to string of drill pipes has back stroke rod that presents pipe with windows for drilling fluid which lower end is provided with aid fixing attachment of hinge joint of geophysical module and which upper end carries shock absorber and retaining fixture that presents cut spring lobes of tulip shape. EFFECT: expanded application field, reduced time and cost of geophysical investigations. 4 cl, 3 dwg