FIELD: mining.
SUBSTANCE: group of specific resistance measurement having modular design includes transmitting module with at least one antenna and receiving module with at least one antenna. Transmitting and receiving modules have connectors on both sides, which are intended for connection to other well devices. Transmitting module and receiving module are spaced in drilling string and are separated with at least one well device. Each transmitting and receiving module may comprises at least one antenna coil with orientation of magnetic torque that is not limited with longitudinal direction of device. Spacing between transmitting and receiving modules may be selected on the basis of expected thickness of header.
EFFECT: easy development of various device configuration for various requirements, improved depth of research.
30 cl, 11 dwg
