FIELD: oil deposits development. SUBSTANCE: oil production method provides for drilling from ground surface of at least one slantingly directed borehole with horizontal furrow, deep pump running into borehole and oil withdrawal from borehole. Additional slant hole is drilled from slant part of borehole, in bottom hole of which deep pump is located to withdraw oil. The additional hole is located at zenith angle, that does not exceed value of α = arctg1/β with b factor of friction between pump-compressing and casing strings. Additional hole drilling site is located below static level of liquid in borehole. EFFECT: increased oil production of boreholes with horizontal holes. 1 dwg
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