METHOD FOR MONITORING BOTTOM-HOLE PARAMETERS DURING WELL DRILLING Russian patent published in 2018 - IPC E21B47/12 E21B44/00 

FIELD: mining.

SUBSTANCE: proposed method for monitoring the bottom-hole parameters when drilling a hole includes deepening the well within the control interval with extension of the drill string and drilling the well bore before and after the extension of the string, running on the logging winch and fixing in the string at the collar of the lower cable section connected to bottom-hole tool, introducing by additional small-sized winch into the string through swivel lubricator and the ball valve of the cable upper section having diameter and strength values smaller than the lower cable section, and connected to measuring-registering equipment at the collar, regular coupling-decoupling through inductive coupler of the upper and lower cable sections, and measuring the bottom-hole parameters when deepening the well through a high-speed cable communication channel. At that, the coupling-decoupling of the upper and lower cable sections is combined with one of the technological operations in the well, namely, reaming the well bore when extending the string, and it is carried out at each extension in automatic mode with the use of actual drilling data. In addition, a small-size winch is mounted above the swivel lubricator and provided with an electric motor, a brake, a sensor system and a control unit.

EFFECT: simplified control of the bottom-hole parameters and increased efficiency of its usage, including in emergency situations.

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