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Bashrie Dias

Senior Energy Efficiency Engineer, GASCO

Bashrie Dias is currently working as a Senior Energy Efficiency Engineer with the Energy Efficiency team at GASCO. He graduated with a Bachelor’s degree in Chemical Engineering from Manipal Institute of Technology, India and has 17 years of professional experience in the Oil and Gas industry. Bashrie has had exposure to various phases of projects, including Front End Engineering, Detailed Engineering and Operations trouble shooting. He has participated in energy efficiency improvement studies in GASCO plants and supported energy efficiency initiatives. Bashrie is also a Chartered Engineer from the UK and Member of IChemE (CEng MIChemE).

Practices in Laboratory & Online Analysis and its impact on Energy Performance of Gas Sweetening Units

Best Practices for Analytical Systems

Abstract: Gas sweetening units (GSUs) are one of the major energy consumers in gas processing facilities. Process control at any functional level, for example basic regulatory control, advanced process control (APC) or real time optimization (RTO), ultimately targets optimization based on field measurements. Online analyzers provide one of the key and crucial field measurements for optimization. Owing to the nature and complexity of gas sweetening process, laboratory analysis and corresponding timely action based on laboratory results are also vital in optimization of GSUs. GASCO is one of the largest onshore gas processing companies with processing capacity of more than 5 BSCFD. It operates more than 20 amine based GSUs with different feed characteristics, solvents and operating envelopes. These units were designed and commissioned by different licensors and contractors at different points in time spanning more than thirty years and are installed at five different locations. Accordingly, they have dissimilarities and differences in terms of provisions, practices and measurements for laboratory & online analysis and process control. This paper presents review of laboratory and online analysis amenities for process control and optimization of GSUs at GASCO. It addresses the challenges associated with monitoring and reporting as well as the barriers in effective utilization of laboratory & online analysis. The paper also gives insight on sensitivity of calculated parameters in performance of advanced process control and real time optimization. It portrays potential opportunities for energy efficiency improvement by correlating the practices with energy performance of GSUs.

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