FIELD: oil production industry. SUBSTANCE: according to method, bore-holes are drilled in productive oil bed. In course of drilling, sheathing is created on wall of bore-hole which is impermeable for drilling mud. This sheathing transmits drilling mud pressure to bore-hole wall. Maximal value of drilling mud pressure is determined as hydraulic fracturing pressure of oil bed. Minimal value of drilling mud pressure is determined as pressure characterizing sharp lowering of permeability of bed ground. In addition, method implies lowering of casing string into bore-hole, cementation and perforation of casing string. Pressure in bore-hole is maintained in performing all operations relating to opening of oil bed until hardening of cement mortar in annular space of casing string. EFFECT: higher efficiency. 1 cl, 1 dwg
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