FIELD: oil and gas producing industry, particularly, treatment of wellbore with hydraulic jets in drilling and completion of wells of various application. SUBSTANCE: method includes treatment of wellbore in course of drilling with drilling mud jets in two stages different in parameters of action on bottomhole and wellbore zones and followed by each other. This is attained by change of direction and force of dynamic impact of hydraulic jet. At the first stage, force of jet dynamic impact into wellbore wall at bottomhole is, at least, 0.15 tf, at the second stage, at least 0.30 tf. EFFECT: higher efficiency and quality of hydraulic jet treatment of permeable and unstable rocks. 1 ex
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