FIELD: engineering acoustics. SUBSTANCE: sensor has fixed wall and rotary disk, both formed as flat segments. Rotary segment is connected with turbodrill shaft end through rod with connecting half-coupling secured on rod end. Rod is spaced from fixed segment by a distance equal to H = 0,785·d2
o
/d, where H is distance between fixed and rotary segment; do is diameter of turbodrill spindle shaft through channel; d is inner diameter of turbodrill upper section transmitter. EFFECT: increased efficiency by enhanced reliability of information obtained from face in the process of drilling inclined wells. 4 dwg
