TGS Announces Pelotas Norte Phase I Multi-client Survey Offshore Brazil

17 Nov 2025 07:00 CET

OSLO, Norway (17 November 2025) - TGS, a global leader in energy data and
intelligence, is pleased to announce Pelotas Norte Phase I multi-client 3D
survey in the Pelotas Basin, offshore southern Brazil. Phase I will encompass
approximately 14,800 square kilometers across 21 exploration blocks, the
majority of which lie in un-held acreage expected to be included in upcoming bid
rounds.

A Ramform Titan-class vessel is scheduled to mobilize for the survey later in
Q4, with project duration running into Q3 2026. The vessel is utilizing TGS
GeoStreamer(®) technology, delivering high-resolution 3D seismic data delivery.
The project is supported by industry funding.

The Pelotas Basin features early basin carbonates and passive margin clastic
sequences, including three organic-rich intervals of Albian, Turonian and
Paleocene ages. The basin attracts significant industry interest driven by its
geological similarities to the conjugate margin and the proven hydrocarbon
systems of West Africa.

Kristian Johansen, CEO of TGS, commented: "Exploration activity in the Pelotas
Norte Basin is accelerating, with several major oil companies increasing their
presence and commitment to the area. The Pelotas Norte Phase I multi-client
survey significantly expands our seismic coverage. By leveraging our advanced
acquisition capabilities and imaging expertise this survey will help our clients
to better understand the basin's geological structures and derisk future
exploration activities. Following the announcement of two large multi-client
surveys in the Equatorial Margin earlier in Q3, the addition of Pelotas Norte
Phase I brings the number of Ramform Titan-class vessels working offshore Brazil
to three for the remainder of this year and well into next."

For more information, visit TGS.com or contact:

Bård Stenberg
VP IR & Business Intelligence
Mobile: +47 992 45 235
investor@tgs.com

About TGS

TGS provides advanced data and intelligence to companies active in the energy
sector. With leading-edge technology and solutions spanning the entire energy
value chain, TGS offers a comprehensive range of insights to help clients make
better decisions. Our broad range of products and advanced data technologies,
coupled with a global, extensive and diverse energy data library, make TGS a
trusted partner in supporting the exploration and production of energy resources
worldwide. For further information, please visit www.tgs.com
(https://www.tgs.com/).

Forward Looking Statement

All statements in this press release other than statements of historical fact
are forward-looking statements, which are subject to a number of risks,
uncertainties and assumptions that are difficult to predict and are based upon
assumptions as to future events that may not prove accurate. These factors
include volatile market conditions, investment opportunities in new and existing
markets, demand for licensing of data within the energy industry, operational
challenges, and reliance on a cyclical industry and principal customers. Actual
results may differ materially from those expected or projected in the forward-
looking statements. TGS undertakes no responsibility or obligation to update or
alter forward-looking statements for any reason.

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