Thin-diameter high-temperature optical cable and cable forming method

Abstract

The invention relates to a thin-diameter high-temperature optical cable and a cabling method. The thin-diameter high-temperature optical cable comprises a core body at least composed of two single-core optical cable bodies and an outer protective layer arranged outside the core body through extrusion molding. According to the thin-diameter high-temperature optical cable and the cabling method, on the premise that the thin-diameter high-temperature optical cable can be used in a high-temperature environment, the outer diameter of the optical cable is reduced, the requirement for limited space laying of an oil extraction pipe and an oil well wall is satisfied, and whole-process real-time oil well measurement is achieved without production halts.

Description

Technical field [0001] The invention relates to an optical cable and a preparation method, in particular to a small-diameter high-temperature optical cable for petroleum logging and a cable forming method. Background technique [0002] The document "He Zhongkun, Shen Cilai, Design of high temperature resistant logging cable for heavy oil wells, "Wire and Cable", 2008 No. 3, 2008.06" discloses a high temperature resistant logging cable (a schematic diagram of the cross-sectional structure is as figure 1 Shown), and elaborated on the selection of materials and the properties they possess. The high temperature resistant logging cable is composed of optical fiber 1, filling grease 2, stainless steel loose tube 3, steel wire inner armor layer 4 and steel wire outer armor layer 5, etc., can withstand high temperature of 300 ℃, and has high tensile strength . See figure 2 The high temperature resistant logging cable is mainly used in the intermittent period of oil well shutdown. After...

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Problems solved by technology

[0004] In order to overcome the shortcoming that the diameter of the armored optical cable is relatively thick and cannot be laid between the oil production pipe and the wall of the oil well, so as to realize the real-time oil well measurement in the whole process of non-stop production, the present invention proposes a kind of optical cable that can be used in a high temperature environment. The outer diameter meets the requirements for laying the oil production pipe and the limited space on the oil well wall, and realizes the thin-diameter high-temperature optical cable and cable forming method for real-time oil well measurement in the whole process of non-stop production

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