PGS Brand Guidelines: The Oslo Seismic Company Behind the Ramform Fleet, Now Part of TGS

A Norwegian seismic company, 1991–2024.

PGS — in full Petroleum Geo-Services — was a Norwegian oil-service company that collected, processed and interpreted seismic data: the sound-wave images of the rock beneath the seabed that oil and gas companies use to locate and map reservoirs. English Wikipedia describes a range that ran from survey planning and data acquisition to advanced imaging, reservoir analysis and interpretation. Both English and Norwegian Wikipedia date its founding to 1991, and Norwegian Wikipedia says its shares were listed on the Oslo stock exchange in August 1992.

The company no longer trades on its own. On 1 July 2024 it merged into TGS, the Norwegian energy-data company, completing a merger plan the two firms first announced on 18 September 2023. PGS ended as a separate listed company that day; TGS said it was bringing together staff from both businesses into one group, and its own release on the completion spoke of “a new chapter” in TGS’s history.

For most of its life PGS was run from the Oslo area. Store norske leksikon, the Norwegian encyclopedia, places its administration at Lysaker in Bærum, just west of the capital; English Wikipedia adds that the head office moved in 2013 to nearby Lilleaker. Its main offices outside Norway were in London and Houston, and at the time of the takeover, the encyclopedia says, PGS had offices in 22 countries, including a regional office in Singapore. At its largest, in 2004, Store norske leksikon puts its workforce at around 3,000 people.

Ships, side businesses and a restructuring.

Seismic surveying was the core of the business, at sea and on land, but PGS did not always stay within it. According to Store norske leksikon, it began a production business in 1997, leasing and operating floating production and storage ships, known as FPSOs, and in 1998 took over Golar-Nor Offshore from the shipowner Awilco. In 2006 it spun that business off as a separate company, Petrojarl, with four FPSOs in the North Sea. A subsidiary, Pertra, produced oil and gas on the Varg field from 2001 until 2005, when it was sold to Talisman Energy. Norwegian Wikipedia says the onshore seismic business was sold in 2010, leaving PGS focused on marine geophysics.

The early 2000s were difficult. A planned merger with the American seismic company Veritas DGC fell through in 2002, and in 2003, after heavy losses, PGS filed for Chapter 11 proceedings under the United States bankruptcy code; it came out with reduced debt and a restructured business, Store norske leksikon says. A second restructuring and refinancing process began in 2019 and was followed by a share issue in January 2020.

Its ships became its most recognisable image. The Ramform class of seismic vessels was developed by PGS, English Wikipedia says. Store norske leksikon records a new class of vessels in 2009 and further deliveries from the Mitsubishi yard in Japan, with the first of the Ramform Titan class arriving in 2013. Ramform Titan, built by Mitsubishi Heavy Industries at Nagasaki, is 70 metres wide at the stern, which English Wikipedia describes as the widest class of single-hulled ships; PGS built three more of the class, Ramform Atlas, Ramform Hyperion and Ramform Tethys.

Norwegian Wikipedia credits PGS with developing seismic acquisition using many streamers — the long cables of sensors towed behind a survey ship — and with high-resolution 3D, 2D and electromagnetic surveys. TGS’s merger page lists seven Ramform vessels equipped with GeoStreamer, which it describes as steerable multisensor streamer technology, alongside ocean-bottom node acquisition.

Design and documentation.

Seismic and geophysical survey companies sell something most people never see: an image of rock layers far below the ground or the seabed. Their websites therefore lean on pictures of the work itself. Survey vessels towing long streamer cables, land crews laying out sensors across desert or farmland, and vibrator trucks lined up on a survey line are the photographs these companies publish again and again, usually next to a coloured cross-section of the subsurface.

Those seismic-image samples do much of the visual work. A processed section, with its bands of colour and folded layers, shows what the company delivers far more quickly than a paragraph of text could. Multi-client data libraries, where a company surveys an area once and licenses the data to several clients, are usually presented through interactive maps and region pages, described in the terms each company chooses for its own library.

Equipment makers and node operators follow a slightly different pattern. Ocean-bottom node pages, land nodal systems and streamer products tend to appear as clean product shots against white or dark backgrounds, with named product lines and launch dates. Land-crew and field-service pages add maps, location lists and training or support offers. Many of these firms also present newer work in mining, geothermal, carbon storage and infrastructure monitoring alongside oil and gas.

Because several of the companies are listed, investor pages are a large part of the picture: results, governance documents and regulated information, laid out in the plain, orderly style that stock exchanges expect. Names change often in this sector, through mergers, renames and asset sales, so a company’s history page and its newsroom are usually the clearest record of who it is today and what it used to be called.

A brand folded into TGS.

The merger passed through several formal steps. TGS shareholders approved the merger plan on 1 December 2023, Norway’s competition authority cleared it on 17 April 2024, and the final competition clearance followed on 11 June 2024, according to TGS announcements; Norwegian Wikipedia says both the British and the Norwegian competition authorities gave their approval. The old pgs.com address now forwards to a TGS page about the merger.

The PGS name did not disappear without trace. On the day the merger completed, TGS unveiled a new brand identity and said its redesigned logo “maintains elements from the PGS brand,” as a signal of the combined company’s technology and operational record. Its merger page describes the refreshed brand as combining TGS’s reputation for financial performance and customer service with “the innovative essence of PGS.” The PGS mark itself is retired; TGS says elements of it continue in the TGS logo. On the same merger page TGS groups the combined business under a multi-client data library, acquisition technology, data processing and imaging, and what it calls new energy, covering wind, geothermal, offshore minerals and carbon storage.

For PGS itself, the strongest visual legacy is the fleet. The Ramform names — Titan, Atlas, Hyperion, Tethys — and the 70-metre stern of the Titan class are the company’s most distinctive physical signature, and TGS’s merger page still lists seven Ramform vessels in the combined fleet. In just over three decades PGS went from a stock-market listing in 1992, through a restructuring in 2003, to a merger in 2024.

For a design guide, PGS shows how an engineering company can be remembered through its ships and, after a merger, through elements carried into another company’s logo. Compare TGS, the company it joined, and Shearwater GeoServices, another Norwegian marine seismic fleet. For this guide we use a fjord deep blue and a buoy orange with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep PGS’s identity on hand — save it to a board in the Made Good inspiration library.