Effect of Cl? Concentration on Erosion-Corrosion Behavior of 434 Stainless Steel in High-Temperature and High-Pressure CO?-O? Environment

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Product Number: 51315-5973-SG

ISBN: 5973 2015 CP

Author: Wei Liu

Publication Date: 2015

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Screens are one of important components used for sand control technology in oil and gas production especially for oil sand production. The filtering precision of screens could represent the effect to control the sand in the production fluid. When the filtering precision of screens changes accordingly the ability of the screens to filter or resist sand in fluid would change. As is well known the erosion-corrosion of sandy crude oil on the screen would lead to the failure of screens. Therefore the change of filtering precision of sand control screens must be considered during the oil and gas production process. Nevertheless researches on the effect of erosion-corrosion on screen filtering precision are rarely reported. This paper investigated the change regularity of screen mesh filtering precision and resistance to sand after erosion-corrosion at different slurry velocities by slurry equipment developed to simulate the sand erosion-corrosion situation. The erosion-corrosion behaviors of screen mesh at different velocities are analyzed and compared using scanning electron microscopy stereomicroscope and electrochemical measuring methods and the experiential relationship between the erosion-corrosion and filtration precision through calculation was established. The research results would be useful to predict the filtering precision and ability to resist sand and to control the screen erosion-corrosion.