TGS ASA

TGS and SLB Announce Engagement Phase 4 in the U.S. Gulf of Mexico

OSLO, Norway (8 June 2023) - TGS, a global provider of energy data and

intelligence, in a strategic collaboration with SLB, today announced the start

of the Engagement 4 Ocean Bottom Node (OBN) multi-client acquisition in the U.S.

Gulf of Mexico.

Acquisition of the 152 OCS block, sparse OBN survey is now underway, extending

contiguous data coverage from prior phases into western Green Canyon. In an area

known for increasingly challenging subsurface imaging, application of full-

waveform inversion (FWI) utilizing ultra-long offsets will provide a dataset

that represents a step-change in the conceivable geological and geophysical

interpretation. In support of existing leases and future lease sale acreage,

fast-track products will be made available in Q4 2023, with final processing

completion scheduled for H2 2024.

Kristian Johansen, CEO at TGS, commented: "Alongside our project partners, we

are excited to bring our sixth multi-client OBN project to fruition in the U.S.

Gulf of Mexico. Ever-positive, proven imaging results from prior phases support

continued application of these advanced seismic techniques, delivering

significant exploration value to our clients."

The project is supported by industry funding.

About TGS

TGS provides scientific data and intelligence to companies active in the energy

sector. In addition to a global, extensive and diverse energy data library, TGS

offers specialized services such as advanced processing and analytics alongside

cloud-based data applications and solutions.

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.

For more information, visit TGS.com (http://www.tgs.com) or contact:

Sven Børre Larsen

Chief Financial Officer

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