Trident Energy has begun a 4D seismic survey offshore Equatorial Guinea on Block G.
The shoot should take 45 days and cover 340 square km, it said. The block holds the Ceiba and Okume fields, with water depths ranging from 100 to 1,200 metres. The work is being carried out by the Polarcus Naila.
Results from the survey will be available in the fourth quarter of 2020.
Trident said this would be the third 4D seismic survey on the fields. The company bought into the assets, with Kosmos Energy, in 2017 and this will be the new company’s first such shoot.
The last monitoring survey took place in 2014 and production has continued since, in addition to new producer wells and improvements in the water injection plans. As such, the shoot will provide insight into how fluid flow patterns have changed.
After processing has been completed, the data should shed light on changes to the reservoir. As a result, it will provide development opportunities in 2021 and beyond, Trident said.
Polarcus announced it had won 4D seismic work in West Africa in October 2019. At the time, the company had said this was due to begin in the fourth quarter of last year.
Trident and Kosmos bought the assets from Hess in 2017, agreeing that the former would handle existing production while the latter would focus on exploration.
Kosmos drilled the S-5 well in late October finding 39 metres of net oil pay in a Santonian reservoir. The design of the well was intended for it to be supported by existing infrastructure, with the find within tieback range of the Ceiba floating production, storage and offloading (FPSO) vessel.