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Erosion of piping systems is a significant issue for many operators of hydrocarbon infrastructure causing a significant loss in revenue and an increase in installations, repair and maintenance costs. Currently, the use of erosion resistant coatings, reduction of flow rates and replacement/repair are the only mitigation controls against erosion. INTECSEA has been developing a novel Erosion Control Technology (ECT) that can reduce the impact of erosion on piping via the strategic placement of custom engineered inserts into the product stream. The two phases of ECT prototype testing under real-field multiphase conditions representing gas condensate fields have been performed at the E/CRC (The University of Tulsa). The superficial gas velocity (VSG) was varied from 31 m/s to 23 m/s with the superficial liquid velocity (VSL) fixed at 0.04 m/s and the sand particles were varied from 300 μm to 75 μm. The metal loss due to erosion was monitored using a set of UT probes in two consecutive elbows spaced 11D apart oriented in a vertical-horizontal loop. The erosion tests using prototype ECT inserts have shown a significant reduction in erosion at both the gas flow conditions. Computational Fluid Dynamics (CFD) has been a backbone in developing this technology and CFD results have shown good correlation with the physical tests. Discussions with leading operators for a field trial targeted for 2020 is ongoing.
The goal of this work is to determine erosion-corrosion damage caused by liquid impact in the oil and gas industry.
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Corrosion, either internal or external, along with other types of defects on pipelines eventually lead to leaks without proper treatment. This gives rise to several issues, including environmental and safety hazards, and in case of pipe leaks in a plant, a loss of the efficiency of the process or, ultimately, failure of the process. Replacing the corroded pipelines (piping) can be difficult, costly and time consuming especially for plant. A required shutdown causes major economic loss. Thus, instead of a replacement of the defected pipelines, the installation of online repair is a better option.Repairs of pipelines include metallic and non-metallic repairs. Metallic repairs generally require welding or hot works which is not suitable for online repair of pipes containing hydrocarbons. In such cases the use of non-metallic composite repairs is the optimum solution. A non-metallic composite repair system is a system used to reinforce structures using a fiber equipped with a thermoset epoxy system. The epoxy system consists of a hardener and a resin which, after mixing, become solid through a polymerization reaction after a short duration of time, a process that is called curing. Depending on the temperature, the duration of time changes in an inverse relation. The higher the temperature, the smaller the duration of time needed for curing. This system can be used to reinforce pipelines with both external and internal corrosion and it can be used on Straight Pipes, Tees, Elbows, Flanges and weld joints. The repair system can also be installed online without the need for a shutdown in a short amount of time and a small requirement of labor intensity, making it cost effective. It is also environmentally friendly. In this paper we are going to present cases that were resolved by our company that demonstrate how successful these non-metallic composite repairs are and how diverse their applications can be