CONTROL  OF  DRILLING  PROCESS  INVOLVING  THE  USE  OF  DOWNHOLE  DRILLING  MOTORS.

V.I. Molodilo – Ph.D. in Engineering, Head of Department
OOO “VNIIBT – Burovoy Instrument”

In the process of well drilling using cutting type drill bits there occur zones of unstable DDM operation, intervals of overload and underload.  Optimization of DDM operation is one of the ways to improve drilling performance. The article provides key performance data of downhole motors of different types: hydrodynamic (turbodrill) and hydrostatic (screw downhole motor).
Results of the conducted researches allowed to develop requirements for the screw downhole motor control processes that will help to increase service life of the motors and improve drilling performance.

Key words: autonomous recorder; hydraulic system; screw downhole motor; test-bench characteristics; unbalanced mode; drilling mode parameters.

CONTROL  OF  DRILLING  PROCESS  INVOLVING  THE  USE  OF  DOWNHOLE  DRILLING  MOTORS.

V.I. Molodilo – Ph.D. in Engineering, Head of Department
OOO “VNIIBT – Burovoy Instrument”

In the process of well drilling using cutting type drill bits there occur zones of unstable DDM operation, intervals of overload and underload.  Optimization of DDM operation is one of the ways to improve drilling performance. The article provides key performance data of downhole motors of different types: hydrodynamic (turbodrill) and hydrostatic (screw downhole motor).
Results of the conducted researches allowed to develop requirements for the screw downhole motor control processes that will help to increase service life of the motors and improve drilling performance.

Key words: autonomous recorder; hydraulic system; screw downhole motor; test-bench characteristics; unbalanced mode; drilling mode parameters.