TotalEnergies’ management in Angola is implementing various measures to cut emissions from deepwater field developments in offshore Block 17.
The main aims are to reduce the use of fuel gas and diminish emissions related to power generation on the FPSOs.
To supply the electricity needed for the platforms’ pumps, compressors and other equipment, several gas turbogenerators operate at the same time, and occasionally outside the machines’ optimal performance range.
The team has been working to reduce the energy use of the turbogenerator-powered equipment via energy efficiency measures such as LED lighting and improved air filters on the turbines.
Other initiatives involve maximizing the reliability of turbogenerators and anticipating potential breakdowns as well as optimizing the number of turbogenerators in operation to minimize the spinning reserve via:
- Improved power sharing between the Girassol and Dalia FPSOs (by optimizing the high-voltage power cable connecting the two platforms); and
- Adjusting management of load sharing on the Pazflor FPSO turbogenerators to increase their power while in operation.
Another main task is updating the current load shedding procedures on both power generation nodes.
Moreover, another ongoing development involves deploying AI-assisted dynamic load shedding to improve efficiency.
At the end of last year, these various measures had cut CO2 emissions by a total of 29,000 metric tons, with potential for a reduction of 51,000 mt over one year. Further anticipated benefits include lowering of maintenance costs by about $13 million over the next 20 years.
