Analyzing Greenhouse Gas Emission Leading Indicators: Case Study of Compressor Profile Optimization

Abstract

This study examines energy efficiency and emission management projects as well as the challenges and solutions. Best practices are identified through multiple workshops, and they are applied to our emission data. These include reviewing factors impacting energy performance, and benchmarking visualization across locations and comparing key equipment. Upon extensive analysis, it becomes evident that there is a significant decrease in the operating pressure of the sales gas export pipeline in comparison to its previous state. Consequently, the optimization of compression profiles is necessary to effectively reduce emissions. Standard emission dashboards primarily report lagging indicators, such as the quantity of emitted gas and burned fuel gas. These factors are significant, but they are measured after the fact. Another important parameter to be considered is the leading indicator. However, the analysis and focus on equipment activities or instrument operations that contribute to lagging indicators are typically lacking. The compression system in gas processing plants is widely recognized for its high fuel consumption. This is mainly influenced by three factors: compression ratio, engine speed, and critical valve operation, which are responsible for maintaining the pressure profile. Opportunities exist for our plants due to the significantly lower sales gas pipeline pressure compared to the original design conditions. This is coupled with the fact that the compression ratio remains the same. After thorough engineering analysis, we have identified that the opening of recycle valves, anti-surge valves, and back pressure control valves are the primary indicators that are valuable for visualizing and implementing decisive measures. Engineering measures have been implemented to address the limitations, allowing the compressors to operate at lower speeds. This has led to a significant reduction in emissions and operating expenses. The increasing convenience of the world poses a significant environmental concern for future generations. Mitigating it effectively is challenging. This study examines various efforts and proposes an effective approach for monitoring, visualizing, and managing emissions in gas processing plants’ compression system. This paper will benefit individuals engaged in emissions reduction efforts and anyone interested in contributing to environmental preservation.