DRILLING WITH PRESSURE OPTIMISATION BY CONTINUOUS DRILLING STRING OF LIFTING PIPES

摘要

FIELD: oil and gas industry.SUBSTANCE: invention relates to the method for drilling of a well shaft. The method includes drilling of a well shaft by means of a continuous drilling string of lifting pipes, measurement of at least one parameter by means of an optical wave guide in a drilling string, besides, measurement includes a stage, when they determine optical back scatter along the optical wave guide, and nozzle adjustment, thus causing fluid inflow into the well shaft or fluid loss from the well shaft, at the same time measurement of at least one parameter additionally includes a stage, when they determine fluid inflow or loss.EFFECT: increased efficiency.26 cl, 8 dwg