METHOD FOR ACTUATION OF AUTONOMOUS DOWNHOLE DEVICE AND FACILITY FOR ITS IMPLEMENTATION Russian patent published in 2010 - IPC E21B47/12 

FIELD: measurement equipment.

SUBSTANCE: invention relates to equipment for geophysical and geological technological survey of wells with autonomous downhole devices (ADD) in the course of drilling. For ADD actuation one performs electrical connection or disconnection of an autonomous inner power supply (PS) to the ADD electrical circuit with the help of an electronic key with an executive component immediately before dropping ADD into the well or after its lifting. To the ADD electrodes one connects a portable actuator device (PAD) containing an autonomous PS with the electronic key executive component via the electrical circuit. Arranged inside the ADD housing are an autonomous inner PS, a transmitting unit, a matching transformer whose output winding is connected to the ADD electrodes, an executive component with an electronic key and electric circuit. PAD is connected to the ADD electrodes with the help of clamps on the electrical outlets and spring-loaded brackets mounted on the electrodes; PAD contains an autonomous PS, an on/off timer, an on/off indicator and an inverter; integrated into the ADD housing are the executive component on/off timer, a power supply unit with the matching transformer additional winding. One of the electrodes on the housing of the aid device is represented by its metallic wall while the other is represented by the metallic casing with a spring-loaded contact projection insulated from the metallic housing wall of the said device. The spring-loaded contact projection is connected inside the ADD housing to one outlet of the output winding of the matching transformer, its other outlet connected to the ADD metallic housing.

EFFECT: improved safety and convenience of the ADD operation.

4 cl, 2 dwg