Strength Analysis of Logging Cable in Deep 10km Well

China has a huge potential for ultra-deep oil and gas resources. To promote ultra-deep oil and gas exploration and achieve breakthroughs in new layers is the key direction for exploring new fields of oil and gas. In order to address potential cable jamming issues in the 10km deep ground well, a finite element mechanical model is developed for the underground cables, including those at the top pulley, bottom pulley, and drum, using the cross-sectional method. The study investigated the impact of factors such as the tensile rod, drum diameter, and lifting speed on the strength of the 10km well cable. The calculation results show that: in order to ensure that the weak point is broken first in the case of continuous cable and to reserve a certain safety factor for the cable, the 5 000lbf pull rod can be selected; the large diameter roller is selected to reduce the cable tension, and the roller with a diameter of 700mm is preferred; the normal lifting speed of the logging cable is 6 000m/h, and the cable tension can reach 61.4kN, meeting the strength requirements. The research results provide basic data for the selection of logging cables, rollers and pull rods for deep 10km wells.