Carbon fiber cable applied to crude oil exploitation and transportation

Abstract

The invention discloses a carbon fiber cable applied to crude oil exploitation and transportation. The carbon fiber cable comprises a tensile core wire. A resin insulating layer is arranged outside the tensile core wire. The resin insulating layer is provided with a carbon fiber heating layer. A heat conducting insulating layer is arranged outside the carbon fiber heating layer. A silicon rubber insulating layer is arranged outside the heat conducting insulating layer. A bending resistance metal wire and an interference resistance shielding layer are arranged in the silicon rubber insulating layer. According to the invention, the carbon fiber cable has the advantages of small heat hysteresis, fast heating and uniform heating temperature; due to the advantages of carbon fiber, the oil field heating cable has the advantages of stable and reliable work performance and long service life, wherein the service life is more than 20 years; the electricity-heat conversion efficiency of the heating cable can be improved; a heating cable power supply device is simplified; the power supply voltage is reduced; the reliability of the heating cable and the control system can be improved; and a power supply transformer is saved.

Description

technical field [0001] The invention relates to a carbon fiber cable, in particular to a carbon fiber cable used for crude oil exploitation and transportation. Background technique [0002] Due to the poor physical properties of the heavy oil in crude oil, such as wax and high pouring point, during production, when the crude oil passes through the oil pipeline and the oil pipeline to the gathering and transportation pump station from the oil layer, the heat is lost, so that the temperature of the crude oil is lower than the critical flow temperature. This will lead to the precipitation and deposition of wax, the sudden increase of viscosity, the increase of flow pressure and the rain, which will lead to the failure of smooth mining. Thermal oil recovery is to use the heat source to exchange heat with the crude oil (thick, waxy, condensate) through the carrier to supplement the heat loss during the process of recovery and transportation. Traditional heavy oil recovery techno...

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Problems solved by technology

Traditional heavy oil recovery technologies mainly include technologies such as "steam stimulation", "chemical degradation" and electric heating. Although they satisfied the development of productivity at that time to a certain extent, due to their own defects, they also hindered the extraction of crude oil. Disadvantages such as high technical cost and easy damage to oil layer structure

Cables manufactured with electric heating technology are mostly made of metal materials, which consume a lot of power, have low heat conversion efficiency, are easy to burn out, and are easy to lose, and the service life of the cable is also short.

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