FIELD: oil and gas industry.
SUBSTANCE: method involves creation of differential pressure in a well-formation system due to density of flushing liquid, creation of hydrodynamic component of differential pressure by starting drilling pumps at approximation of a bit to a working face, as well as switching-over the hammer to design load and frequency of its rotation. Differential pressure of flushing liquid at the face is increased till drilling speed increase is stopped with further maintenance of the set mode.
EFFECT: increasing the drilling rate of high-permeability rocks during inclined and horizontal drilling.
4 dwg
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