Oil well heating electric heating cable effect in heavy oil well shaft insulation

Published on:

2022-08-22 16:46

The viscosity of heavy oil is extremely sensitive to temperature During flow through the wellbore, as the temperature decreases, the viscosity of crude oil increases dramatically, the friction pressure gradient increases, the fluidity in the wellbore decreases, and the complexity of production increases significantly. Electric heating technology can quickly increase the temperature of crude oil in the wellbore, and with appropriate heat preservation measures, the temperature of crude oil can be maintained above a certain temperature.

Electric heating technology

In the electric heating oil extraction process, electric heating rods, heating cables, and electric heating oil pipes are commonly used as a heat carrier to heat and insulate the well bore. Among them, the electric heating rod process is more widely used. Huaning hollow rod electric heating system is a complex of general equipment consisting of a hollow rod, heating cable, power supply, and so on. It uses the thermal energy generated by electric heating to heat the crude oil in the oil pipe throughout the process to reduce the viscosity of the crude oil, prevent the deposition of paraffin in the oil pipe, improve the fluidity of the crude oil and achieve the goal. Increase in productivity and efficiency.

Working Principle of Oil Well Heating Cable

The Huaning Hollow Rod Electric Heating System shall penetrate the inner hole of the hollow pump rod and form a loop with the hollow rod body, pass through AC of different frequency, use the inner shell effect to generate thermal energy on the wall of the hollow rod through thermal conductivity. The crude oil in the pipe is heated all the way to increase the temperature of the crude oil in the pipe, reduce the viscosity of the crude oil and improve its fluidity to effectively use high viscosity, high freezing temperature and high paraffin crude oil. When the inner cable of the hollow pump rod is powered by alternating current, an internal skin effect is created, the current flows down the inner wall of the hollow rod, and the outer wall is basically without current, which can be viewed as an insulator. To ensure labor safety.

When the inner cable of the hollow pump rod is powered by alternating current, an internal skin effect is created, the current flows down the inner wall of the hollow rod, and the outer wall has basically no current, which can be considered an insulator. To ensure labor safety.

Its structural diagram is as follows:

Huaning Electric Heating Rod has the following characteristics:

The process is simple and the design is convenient. No need for special machinery and equipment for oil production;
Long life, electric heating of hollow rods compared to conventional heating cables, and the cable sheath is made of seamless steel pipe with high tensile strength and excellent mechanical properties and can be used in harsh conditions;
High thermal efficiency. The oil well heating cable is located in the center of the oil pipe, and the thermal energy is used almost entirely to heat the crude oil around the hollow pumping rod;
Self-monitoring the conversation. The output power of the continuous steel pipe heating cable can be adjusted according to the oil well conditions.
Its working principle is to heat the cable through a continuous steel pipe, reduce the heat generated in the conversion of electrical energy to affect the well fluid, increase the temperature of the well fluid, thereby reducing the viscosity of the crude oil, improving the flow. Heavy oil in the wellbore and ensuring uninterrupted production of heavy oil through the wellbore.

Latest News

Please search according to your needs.