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A New Approach to the Development of Cost Effective Combined Scale and Corrosion Inhibitors

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One of the recent challenges faced by the oil and gas industry includes the need to reduce operational costs by developing new cost effective combined scale and corrosion inhibitors with similar or improved performance compared to existing products in the market place.The formulation of combined scale and corrosion inhibitors is never an easy task since most scale and corrosion products are often incompatible and require complex formulations to ensure product stability and scale and corrosion inhibition performance. In addition most combined products are tested for individual scale or corrosion inhibition performance as either the individual products or the blend. In some cases compromise in corrosion testing may be made by modifying the brine chemistry to minimise the contributing effects of scaling on corrosion inhibition assessments. Although the above is a proven approach for product evaluations it does not often offer much flexibility in terms of product optimisation and cost reduction without significant test work.A new approach based upon compatibility screening and using a new test methodology for the simultaneous measurement of both scale and corrosion inhibition has been utilised to develop a new scale and corrosion inhibitor for both topside and sub-sea application.This process also takes into consideration cost and efficiency factors to provide efficient protection against scale and corrosion. In addition information is also provided on the kinetic processes of simultaneous scale and corrosion inhibition on a surface. Complimentary information on the analysis of the scale deposits have also been obtained using Scanning Electron Microscopy Energy Dispersive X Ray Analysis (SEM/EDAX) and X Ray Diffraction (XRD).The results obtained in this study showed that this new approach could be used for the quick and effective design of cost effective efficient combined scale and corrosion products while also providing a better understanding of the mechanisms of simultaneous scale and corrosion.Key words: Combined scale and corrosion inhibitors cost-effective SEM/XRD kinetics

Product Number: 51319-13318-SG
Author: Miriam Barber
Publication Date: 2019
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