Electromagnetic paraffin prevention paraffin viscosity reduction device capable of changing frequency and strong field

Abstract

The invention provides an electromagnetic paraffin prevention paraffin viscosity reduction device capable of changing frequency and a strong field. The electromagnetic paraffin prevention paraffin viscosity reduction device is characterized by comprising a magnetic field generating device. The magnetic field generating device comprises an inner tube arranged in the middle of an outer shell, a coil is wound on the periphery of the inner tube, a wire connecting box is arranged on the outer shell, terminals are arranged inside the wire receiving box and connected with the coil and one end of a cable, and the other end of the cable is connected with a power supply control box. The electromagnetic paraffin prevention paraffin viscosity reduction device capable of changing the frequency and the strong field overcomes the defects in the prior art, can generate an electromagnetic field of set frequency and intensity alternation, meanwhile, due to the fact that a winding form of the inductance coil is in a step shape, magnetic field intensity in the inner tube is distributed in a stair-step-shaped mode, the electromagnetic paraffin prevention paraffin viscosity reduction device capable of changing the frequency and the strong field can physically change property of crude oil, an optimal effect is achieved, the phenomena of wax precipitation and sinking of the crude oil in the pipeline are effectively prevented, viscosity of the crude oil is reduced, and therefore oil production quantity and pipeline transport efficiency are improved, and periods of pump inspection of an oil pump and wax removing of a pipeline are prolonged.

Description

technical field [0001] The invention relates to a novel variable-frequency and variable-strength electromagnetic anti-wax viscosity reducer, which belongs to the technical field of crude oil exploitation and pipeline transportation. Background technique [0002] Most of the crude oil produced in my country's oilfields has a high wax content. In the process of crude oil extraction, as the temperature and pressure drop and the light components continue to escape, the wax-dissolving ability of crude oil will continue to decline, and the wax in crude oil will precipitate, accumulate and deposit on solid phase surfaces such as pipe walls in the form of crystals. That is, waxing occurs. After the oil well and the pipeline are waxed, the oil flow channel of the oil pipeline becomes smaller and the flow resistance increases, which not only directly affects the normal operation of the oil pumping equipment, but also affects the efficiency of oil transportation. Therefore, wax preve...

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Problems solved by technology

However, the currently used electromagnetic anti-wax viscosity reducer has the following disadvantages: First, parameters such as the magnetic field strength and the alternating frequency of the magnetic field of the electromagnetic anti-wax viscosity reducer cannot be adjusted with changes in well conditions, which makes the electromagnetic anti-wax The wax reducer has poor adaptability when used; secondly, the magnetic field in the cavity of the electromagnetic anti-wax reducer is a single strong field without step changes, ignoring the effect of the step change of the magnetic field strength on preventing the precipitation of wax crystals. Therefore, The existing electromagnetic anti-wax viscosity reducer is generally not effective in anti-wax and viscosity reduction

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