ExxonMobil has awarded Norwegian seismic company Shearwater GeoServices a contract to conduct a six-month 4D ocean bottom node survey offshore Guyana. The survey, set to begin in the first half of 2025, will use Shearwater’s seismic vessel as a source and dual remotely operated vessels for node deployment.
The 4D survey will complement ExxonMobil’s development drilling efforts in the Stabroek Block and improve understanding of offshore hydrocarbon reservoirs by capturing time-lapse changes in geophysical properties.
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“Shearwater is pleased to be selected for this significant contract in one of the world’s fastest-growing offshore oil and gas regions,” said Shearwater Chief Executive Officer Irene Waage Basili. She added that the company had recently completed similar 4D towed streamer operations for ExxonMobil in Canada.
4D seismic technology, which builds on traditional 3D seismic studies, helps optimize reservoir drainage, well placement, and reservoir development. It also tracks changes in reservoir pressure and the movement of oil and gas during extraction.
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ExxonMobil has already contracted PGS for a previous 4D seismic survey in Guyana. The company is advancing plans for five more development projects in the country, aiming for a production capacity exceeding 1.7 million barrels per day by 2030.
In addition to drilling at the Uaru field development, ExxonMobil is conducting offshore installation activities at the Yellowtail field. The company is also drilling at the Stabroek Block, where it has made more than 30 discoveries since 2015, with an estimated recoverable resource of over 11 billion barrels of oil equivalent.
Since 2015, the company has made over 30 commercial discoveries in the block where it has found over 11.6 billion barrels of oil equivalent resources.
ExxonMobil operates the Stabroek Block with a 45% stake. Hess has 30% interest and CNOOC holds 25%.
