Process Quick-Look Assessment – A Booster for Decarbonization

Abstract

Abstract This paper aims at describing how O&G companies can boost the decarbonization of their Upstream activities and target operational excellence by analyzing their assets with a well-structured and efficient methodology, called ‘Process Quick-Look Assessment for carbon footprint reduction’, or PQLA. This quasi-exhaustive review allows to identify and prioritize actions to reduce greenhouse gas (GHG) emissions, with a primary focus on quick wins / low CAPEX actions. From the analysis of historical operational data, a detailed mapping of the asset GHG emissions by sources of energy (fuel gas, electricity, liquid fuels), flaring and venting is established. Then, a multidisciplinary task force with process, operations, maintenance and well performance representatives from Headquarter and Affiliate/Business Unit starts the investigations. By analyzing pressure profiles of gas, water and oil, by performing a gap analysis review with respect to (w.r.t.) best operational practices, by challenging methodically each system operation considering plant historical data, the team is able to identify areas for improvement and make impactful recommendations. Typical quick-win findings are the process control improvement of compressor anti-surge, reduction of discharge pressure of compressors and pumps, adjustment of valve setpoints, optimization of the cooling medium distribution… etc. The structured methodology of the PQLA allows to establish a consolidated overview of the GHG saving possibilities, with strong Affiliates commitment that fully own quick-wins and low CAPEX initiatives to close the gaps and rapidly improve GHG emissions. It has been applied on multiple assets operated by the Company in Nigeria, Angola, Congo, Brazil, Denmark, Qatar, UK, Argentina… with effective or and realistic realizable GHG emissions reductions. In addition, the PQLA leads to a positive mindset change in Energy & GHG management culture within the Affiliates, contributing to onboard the operational teams to further accelerate the reduction of GHG emissions.