METHOD AND DEVICE FOR CONTACT-FREE DATA EXCHANGE AND BATTERY RECHARGE OF STAND-ALONE LOGGING DEVICES Russian patent published in 2008 - IPC E21B47/12 H01F38/14 

FIELD: physics, measurement.

SUBSTANCE: invention concerns geophysics, particularly methods of contact-free data exchange between stand-alone geophysical logging devices and land reading device, and contact-free battery recharge for stand-alone geophysical logging devices. Stand-alone performance on land surface with closed lubricator is sustained due to inductance link to inductance coil wound on radiotransparent adapter under lubricator, and to inductance coil on charge and telemetry module with case of radiotransparent material. To achieve more efficient power transfer between coils a core is used. Well equipment with independent memory, suspended on wire, is brought down by hoist. Steel wire passes through sealed gaskets in upper lubricator part and through glass-fibre plastic adapter mounted between lubricator and wellhead assembly. When measurement cycle is finished, well equipment with stored data are brought up by hoist through wellhead assembly.

EFFECT: stand-alone operation of device.

7 cl, 5 dwg, 1 ex