METHOD OF DETERMINING OPERABILITY OF A MILLING TOOL Russian patent published in 2024 - IPC E21B47/07 E21B45/00 

FIELD: measurement.

SUBSTANCE: invention relates to measurement of parameters and control during milling, to diagnostics of milling tool operability. Method for determining operability of a milling tool includes measuring process parameters of oscillations of the axial load on the milling tool with a hydraulic weight indicator mounted on the fixed end of the tackle rope, and working fluid pressure with a digital pressure gauge – on the pump manifold line in the technical system: "tool – assembly of the bottom of the drill string – pump", further determination of accepted as reference values of criteria for diagnosing operability according to Hoover K_HP=H_P2/H_P1 and K_HF=H_F2/H_F1 and determining operability of the tool by comparing current values of diagnostic criteria with their reference values, reference values of criteria are determined experimentally on a test bench. At the same time higher reliability of evaluation of technical state of milling tool during operation is provided.

EFFECT: higher reliability of calculations for determining tool failure.

1 cl, 4 dwg, 3 tbl