Viridien experts interviewed by Marine Technology Reporter about value of reimaging survey data

Paris, France | Apr 7, 2025

Ceri Davies, Gregor Duval, Rongxin Huang and Hari Krishna discuss how legacy data continues to add value to oil, gas and carbon storage projects.

In an exclusive interview in the March/April 2025 issue of Marine Technology Reporter, experts from Viridien’s Subsurface Imaging and Earth Data teams discuss how the latest imaging technologies can unlock the value of legacy data, allowing operators to reduce costs and shorten turnaround times (compared to acquiring new seismic surveys) when better seismic images are needed to make important decisions for their prospects and reservoirs.

“TLFWI and FWI Imaging, whether in their acoustic or elastic versions, have brought tremendous value to the reprocessing of legacy seismic data.”– Rongxin Huang, VP, US Imaging, Subsurface Imaging, Viridien.

In the North Sea, Viridien recently reprocessed multi-client seismic streamer data to create value for clients evaluating the Central North Sea and the Southern North Sea. “We were able to enhance the legacy streamer data with significant uplift to the final images,” said Hari Krishna, Director Europe, North Africa & Middle East, Earth Data, Viridien.

Imaging legacy seismic data can also play a role in screening for carbon storage sites by enabling storage potential to be characterized in 3D. “With the latest seismic processing technologies, legacy seismic data can provide good resolution images of the target formation and its overburden.”– Gregor Duval, Carbon Storage Manager, Earth Data, Viridien.

Even data from old wells can quickly be devalued. But, according to Ceri Davies, digital geology manager, Earth Data at Viridien: “Every one of these wells provides a direct window into the subsurface at their location. By reprocessing, collating and curating this legacy data, we provide explorationists with the opportunity to revisit the excitement that drove the initial investment in the well.”