ExxonMobil deploys drone and 3D sonar technology to boost efficiency in Angola
ExxonMobil is introducing advanced drone-based technology and 3D sonar imaging to strengthen inspection practices across its offshore oil and gas operations in Angola. With annual investments of about $1 billion in technology, the energy giant is using innovation to improve safety, cut costs, and enhance operational efficiency.
The company, which has stakes in three deepwater blocks spanning nearly two million acres – including legacy assets like Block 17 – showcased these innovations during an ExxonMobil-sponsored pre-conference session at the Angola Oil & Gas Conference & Exhibition 2025.
Safer, faster inspections through drones
According to Vera Veloso, Integrity Engineering Supervisor at ExxonMobil, drones are transforming inspection methods by replacing rope-access teams with remote, technology-driven solutions.
“These drones are able to reach hazardous areas, without the need for human intervention. This improves the efficiency and safety of inspections. They can also be done when the operations are underway – so, we don’t have to shut down operations,” Veloso explained.
The shift to drones has already delivered measurable results, with inspection times reduced by 60%. Beyond speed, drones also improve data quality, supporting better decision-making and minimizing operational disruptions.
Precision with 3D sonar imaging
ExxonMobil is also employing echoscope technology – using 3D sonar imaging – to map the seabed, validate trench dimensions, and provide real-time monitoring even in zero-visibility conditions.
“The 3D sonar imaging uses sound pulses. That data enables us to map the seabed, taking all the measurement and identifying the anomalies around the suction pipe. The main benefit of this technology is data accuracy – we are able to access more dimensions of the trench. It also improves the efficiency of the surveys as we are not limited by the visibility,” Veloso said.
The integration of sonar technology not only boosts the accuracy of inspections but also enhances surveillance and risk evaluation across complex offshore projects.
Looking forward, ExxonMobil aims to expand its technology arsenal in Angola. Planned innovations include AI-driven robotics, autonomous drones capable of visual, acoustic and ultrasonic inspections, AI-powered digital twins for modeling assets, risk mitigation through AI decisioning, and advanced connectivity solutions such as 5G and Starlink to enable remote operations.
