Heat tracing cable for oil tank, pipeline and oil extraction

Abstract

The invention discloses a heat tracing cable for an oil tank, a pipeline and oil extraction. The heat tracing cable comprises a power cord and a carbon fiber heating cable, wherein a carbon fiber insulating layer, a resin insulating layer, a shielding layer and a glass fiber braid layer are sequentially arranged between the power cord and the carbon fiber heating cable in a spaced mode; the carbon fiber heating cable is arranged outside the glass fiber braid layer in an intertwisting mode; the power cord is connected with the carbon fiber heating cable through an electrode. According to the heat tracing cable for the oil tank, the pipeline and oil extraction, when the rated operational voltage is 220V, the surface temperature of the heat tracing cable can reach about 1500 DEG C, thermal hysteresis is low, temperature rises fast, and heat emitting temperature is uniform; compared with an oil field heating cable with the same external diameter made of copper alloy, the heat tracing cable is 200-300 kg lighter; due to the advantages of carbon fibers, the oil field heating cable is stable and reliable in working performance and long in service life.

Description

technical field [0001] The invention relates to a heating cable, in particular to a heating cable for oil tanks, pipelines and oil production. Background technique [0002] Because the heavy oil in crude oil contains wax and high pouring point, etc. due to "poor physical properties" in production, when the crude oil passes through oil pipelines and pipelines to the gathering and transportation pump station from the oil layer, the heat is lost, making the temperature of the crude oil lower than the external flow temperature. This will lead to the deposition of wax, the sudden increase of viscosity, the increase of flow pressure and the decrease of flow pressure, 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. The traditional "heavy oil" extraction technologies mainly ...

AI Technical Summary

Problems solved by technology

"Chemical degradation" of "steam huff and puff gas" has the disadvantages of high technical cost and easy damage to oil layer structure

Because most of the cables manufactured by electric heating technology are made of metal materials, the power consumption is large, the heat conversion efficiency is low (only 70%), easy to burn out, easy to wear, and the service life of the cable is relatively short, which takes two years Replacing it once greatly increases the cost of the enterprise

Even the relatively advanced high-frequency induction electric heating technology has its own unavoidable defects. Due to long-distance transmission, the loss is large, and the power supply needs to be placed underground. The underground pressure is high and the temperature is high. Sex puts higher demands on

Although the above methods have a wide range of applications, they are difficult to make electric heating elements that are durable and have high thermal efficiency without affecting their application range.

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