FIELD: instrumentation for bore-hole drilling. SUBSTANCE: this can be used in drilling of directed wells and in creation of subsurface reservoirs. Method is realized through undertaking inclinometric measurements of deviation of bore-hole from vertical line and orientation of lowered bottom-hole device relative to direction of aforesaid deviation. According to results of inclinometric measurements before and after lowering of bottom-hole device into well, determined is turning angle of bottom-hole device for reaching preset orientation of device at directed drilling. Application of aforesaid method allows for achieving more accuracy in orientation of bottom-hole devices at drilling of directed wells in condition of influence of magnetic mass of bottom-hole devices and pipe strings. EFFECT: higher efficiency. 3 dwg
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