Corrosion detection apparatus in pipe and its use method

Abstract

The present invention relates to a tube corrosion detection device and its use method, which includes a detection tube section with flanges at the two ends, a number of corrosion coupons, a number of corrosion probe, a number of pH measurers, and a pressure gauge and a temperature measuring instrument; a first sampling port for collecting and detecting the gas samples in the tube section at the top of the pipe sections and a second sampling port for collecting and detecting the solid samples and the liquid samples in the tube section at bottom of the detection tube corresponding with the first sampling port, wherein the corrosion coupons, the corrosion probes and the pH measurers are connected and fixed on the detection tube section and distributed on the top and the bottom of the detection tube section and the pressure gauge and the temperature measuring instrument are respectively connected and fixed on the top and the bottom of the detection tube section. The tube corrosion detection device not only accurately detects the tube corrosion at real time during oil-gas field production process, but also detects the tube corrosion during the other tubes production process, thereby obtaining the rather suitable tube material and corrosion inhibitor.

Description

technical field [0001] The invention relates to a detection instrument and its application, in particular to a pipeline internal corrosion detection device and its application method. Background technique [0002] The production fluid of oil and gas fields is usually a mixture of oil, water and gas, and the corrosive medium (such as H 2 S, CO 2 etc.) are highly corrosive to oil and gas gathering and transportation pipelines and equipment, and are likely to cause corrosion of pipelines and equipment, resulting in leakage of production fluid, and even explosion of pipelines and equipment. Explosion accidents in oil and gas fields at home and abroad in recent years show that: such as H 2 S, CO 2 The corrosion of oil and gas gathering and transportation pipelines and equipment by corrosive media has become one of the main factors affecting the safe production of oil and gas fields. If you can grasp the corrosion mechanism and law of corrosive media, or know the corrosion of ...

AI Technical Summary

Problems solved by technology

However, the current on-site acquisition technology for internal corrosion in pipelines is still immature. The amount of data collected by existing technologies for internal corrosion in pipelines is small, and it is impossible to understand the full range of corrosion conditions in pipelines. Moreover, the detection cost is high, which is not conducive to the detection of corrosive media. Research on corrosion mechanism and laws, and safe production of oil and gas fields

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