High-temperature submersible oil pump cable and manufacturing process thereof

Abstract

The invention relates to a high-temperature submersible oil pump cable and a manufacturing process thereof, and belongs to the technical field of submersible oil pump cables for an oil field. The technical solution is that the high-temperature submersible oil pump cable comprises a conductor (1), an ethylene propylene insulating layer (2), a lead sheath (3), an isolating layer (4) and a steel-tape armor layer (5), where the ethylene propylene insulating layer which is ethylene propylene diene monomer is extruded outside the conductor; the surface of the conductor is coated with a binder at a temperature-resist grade of 232 DEG C before the ethylene propylene diene monomer is extruded; special ethylene propylene diene monomer is adopted; after the ethylene propylene insulating layer is extruded outside the conductor, highly anti-corrosive alloy lead is extruded outside to serve as the lead sheath; a high-temperature resistant adhesive tape is wound on the surface of the lead sheath to serve as the isolating layer to form a core wire; and three core wires are arranged in line and are coated with a linked steel tape outside which serves as the steel-tape armor layer, thus, the production of the cable is completed. According to the invention, the special ethylene propylene diene monomer is taken as the ethylene propylene insulating layer, so that the high-temperature resistant and anti-aging performance of the cable are improved; the continuous working temperature of the conductor is as high as 232 DEG C; and the ethylene propylene insulating layer is bonded with the conductor into a whole at a high temperature.

Description

technical field [0001] The invention relates to a high-temperature submersible oil pump cable and a manufacturing process thereof, belonging to the technical field of oil field submersible oil pump cables. Background technique [0002] At present, for domestic submersible pump cables, the maximum temperature of the conductor for continuous operation is generally less than 204°C. However, with the continuous improvement of oil extraction technology, the depth of oil wells is also continuously deepened, resulting in higher and higher downhole temperatures, making the maximum temperature of the conductor in continuous operation exceeding 204°C, which is difficult for ordinary submersible pump cables in the background art. Since there is no submersible pump cable that can withstand a higher operating temperature (over 204°C), the only way to reduce the heat generated by the cable is by increasing the cross section of the wire. However, increasing the cross-sectional area of ​​t...

AI Technical Summary

Problems solved by technology

However, increasing the cross-sectional area of ​​the conductor will inevitably lead to an increase in the overall size of the cable. Due to the limited construction space between the cable suction pipe and the oil well casing, the structural size of the cable is also limited to a certain extent.

Images