Full-frequency-sweeping electromagnetic wax-preventing scale-inhibiting corrosion-inhibiting device for crude oil exploitation and transportation pipeline

Abstract

The invention discloses a full-frequency-sweeping electromagnetic wax-preventing scale-inhibiting corrosion-inhibiting device for a crude oil exploitation and transportation pipeline, and belongs to the technical field of oil exploitation and transportation technologies. The full-frequency-sweeping electromagnetic wax-preventing scale-inhibiting corrosion-inhibiting device for the crude oil exploitation and transportation pipeline comprises a non-magnetic-conductive pressure-bearing medium transportation pipeline, and can monitor the temperature of a crude oil medium in the non-magnetic-conductive pressure-bearing medium transportation pipeline and operation parameters of a front-end electromagnetic harmonic conversion and parameter detection system, a middle electromagnetic harmonic conversion and parameter detection system and a rear-end electromagnetic harmonic conversion and parameter detection system in real time; and according to different temperatures and well conditions, the frequency and the magnetic field intensity of a magnetic field are controlled through an HMI / PLC integrated program control module, an adaptive frequency algorithm generation module, a multi-harmonic generation module and an IGBT driving and harmonic power generation module in an integrated machine, and the magnetization distance is adjusted, so that the application range of wax prevention and scaleprevention of the device is expanded, and the corrosion-inhibiting effect of the device after wax prevention and scale prevention is improved.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation and gathering and transportation, and more specifically relates to a full-frequency sweep electromagnetic anti-wax, scale and corrosion inhibition device for crude oil production and transportation pipelines. Background technique [0002] In crude oil extraction, the produced fluid has a certain amount of wax deposits. Waxing is a physical phenomenon and production problem that is often encountered in oil field production. Wax can be divided into paraffin wax and ozokerite according to the crystal shape. Waxing forms band-like and sheet-like wax deposits in three-dimensional space, which are mainly composed of paraffin C14-C35 n-alkanes, and a certain amount of ozokerite C36-C55 and microcrystalline wax. In addition, there are colloid, asphaltene and a small amount of water, sediment, salt scale and other organic and inorganic substances in the wax deposits. [0003] Paraffin mol...

AI Technical Summary

Problems solved by technology

However, the current common electromagnetic anti-wax technology is basically a single-frequency pulsed magnetic field with a single pulsed magnetic field frequency and a fixed magnetic field strength. Some use permanent magnets, the output power cannot be adjusted, and the magnetization distance is short. Different well conditions use a single frequency or magnetic field Intensity, resulting in a narrow range of wax and scale prevention, and can not be adjusted for different well conditions, resulting in a series of problems of poor wax, scale and corrosion inhibition and failure. Theoretical research is not deep enough, the pertinence is not strong, the scope of application is narrow, and the efficiency is low and poor performance

Images