FIELD: well construction. SUBSTANCE: device for horizontal well logging includes container made in form of two upper and lower couplings spaced in axial direction. Couplings are rigidly interconnected by means of branch pipe with four longitudinal through ports. The ports are shifted over perimeter relative to one another through 90 deg. for measuring levers of caliper. Couplings have rigid centralizers. Lower coupling has shaped landing hole. Caliper lower end has additional unit for shaped landing hole which ensures coincidence of its measuring levers with longitudinal through ports of branch pipe. EFFECT: provided well caliper logging of horizontal wells with use of container for measuring unit. 3 dwg
