well/borehole logging cable is mainly composed of copper conductors, insulating plastic and steel wire armor. The number of conductors in cable have optional single core, three core, four core, seven core, etc., so cable diameter ragne from 4.70mm, 3.5mm, 5.60mm, 6.40mm, 8.00mm, 11.8mm, 12.60mm, 13.20mm. For working temperature,if at room, cable temperature is -30~150 C, if need high temperature one, it's can up to -50~260 C. There are various classifications for cable, such as in accordance with the classification of cable shielding: total shielding and split phase Shielding plus total shielding, and if according to the corrosion grade is divided into: ordinary steel and hydrogen sulfide type anti falls