Intelligent optic-electric composite load-bearing detection cable

Abstract

The invention provides an intelligent optic-electric composite load-bearing detection cable, and relates to the technical field of detection cable manufacturing. The intelligent optic-electric composite load-bearing detection cable comprises a signal wire unit and a power wire unit, wherein the signal wire unit and the power wire unit are mutually stranded; the signal wire unit comprises an optical fiber, a stainless steel tube and a sheath layer are sequentially arranged outside the optical fiber, and the gap between the optical fiber and the stainless steel tube is filled with grease; the power wire unit comprises six wire cores, each wire core comprises a copper wire bunch-stranded conductor, a fluoroplastic insulation layer is extruded outside each copper wire bunch-stranded conductor, and the six wire cores of the power wire unit are uniformly distributed on the periphery of the signal wire unit; a fluoroplastic inner jacket, an inner-layer steel wire armoring layer and an outer-layer steel wire armoring layer are sequentially arranged on the periphery of the signal wire unit and the power wire unit which are mutually stranded; a filling layer is arranged between the signal wire unit and the inner jacket and between the power wire unit and the inner jacket. When used for measurement at a large depth, the intelligent optic-electric composite load-bearing detection cable can guarantee the fidelity and the reliability of signal transmission, effectively reduce the dead weight and improve the bearing capacity, and is suitable for detection of underground oil fields.

Description

technical field [0001] The invention relates to the technical field of detection cables, in particular to an intelligent photoelectric composite load-bearing detection cable. Background technique [0002] The load-bearing detection cable mainly refers to the double-steel wire armored rubber-sheathed cable for downhole oil mine detection under the condition of bearing the mechanical load (hanging hammer plus the cable's own weight), also known as the oil well logging cable. Core etc. Most of the logging cables are 7-core, and they are required to have the characteristics of large length and high strength. Well logging cables are called "the eyes of oil workers" in the petroleum industry, through which we can know whether there is oil or gas underground, and can measure technical parameters such as well temperature, well pressure and well deviation. In the prior art, the load-bearing detection cable mainly uses the metal conductor core as the signal line. The disadvantage is...

AI Technical Summary

Problems solved by technology

In the prior art, the load-bearing detection cable mainly uses the metal conductor core as the signal line. The disadvantage is that the signal attenuation is large during signal transmission. When the working length is too long, the signal attenuation is too large, which makes the receiving instrument unable to distinguish the measurement The signal cannot be measured at a large depth (above 10,000 meters); on the other hand, due to the high density of metal conductor cores, the cable’s own weight is too large, which greatly reduces the effective carrying capacity of the cable

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