FIELD: geophysical oil and gas well investigations, particularly to deliver geophysical instruments in horizontal well bore.
SUBSTANCE: device has drive connected to geophysical instruments. The drive comprises frame with two bearing rollers having different diameters. The rollers are transversal to longitudinal frame axis. Roller having the greatest diameter is used as drive roller. Geophysical instruments are installed on drive frame. Drive roller is connected to drive motor installed on the frame. Roller having smaller diameter is front roller in geophysical instruments movement direction.
EFFECT: increased simplicity and reliability, possibility to deliver geophysical instruments over a large distance inside well bore.
4 cl, 3 dwg
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