engineering

Viridien

Viridien is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Viridien rather than just read about it. In short: Viridien (VIRI), formerly CGG, is a multinational technology, digital and Earth data company, specializing in solving complex natural resource, energy transition and infrastructure challenges. History In 1926, Conrad Schlumberger, and his brother Marcel Schlumberger, formed Société de Prospection Electrique (SPE) which specialized in oil and coal exploration as well as civil engineering.

Key takeaways

Viridien belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Viridien to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Viridien from memory before moving on to harder problems.

Reference excerpt

Viridien (VIRI), formerly CGG, is a multinational technology, digital and Earth data company, specializing in solving complex natural resource, energy transition and infrastructure challenges.

History In 1926, Conrad Schlumberger, and his brother Marcel Schlumberger, formed Société de Prospection Electrique (SPE) which specialized in oil and coal exploration as well as civil engineering. In March 1931, SPE and Société Géophysique de Recherches Minières (SGRM), both specialists in seismology and magnetometry, merged into La Compagnie Générale de Géophysique (CGG). SGRM provided 5,000,000 francs of capital and CGG provided 120,000 francs of capital. In his premises at 30 rue Fabert, in Paris, Conrad Schlumberger decided to transfer the subsurface business to CGG while SPE retained the logging. Marcel Champin was Chairman and Conrad Schlumberger was Vice-Chairman. At the same time, Raymond Maillet from SGRM was appointed President of CGG. In 1954, CGG acquired its first IBM 604 computer and an MT4 analog computing center for processing field data. In 1958, CGG completed its first dual-vessel marine survey with one source vessel. In 1966, CGG opened its first seismic data processing center in Massy, France. In 1971, CGG started 3D marine seismic exploration with wide-line profiling . 1974-1990, Journey into the Earth, Part 4: The third dimension

Veritas DGC Veritas Energy Services, a geophysical services company, was established in 1974 in Calgary, Alberta, Canada with the purchase of a Rafael Cruz owned firm Rafael B. Cruz and Associates Ltd. by David B. Robson. Meanwhile, Digital Consultants Inc. had been established in Houston, Texas in 1965. In 1969, Digital Consultants reincorporated as Digicon Inc. (DGC), becoming a public company on the American Stock Exchange. In 1977, the a single-channel cable telemetry system used for extreme conditions, SN348, was introduced. In 1979, commercial depth migration was offered. In 1994, 4D seismic surveys were carried out. In 1996, Veritas DGC was formed from the merger of Veritas and Digicon. Then in 2000, the company began imaging 4D time-lapse seismic data for carbon storage injection and monitoring.

CGGVeritas The company became CGGVeritas through its merger with the North American company Veritas in 2007. CGGVeritas acquired Norwegian company Wavefield Inseis in December 2008.

CGG In September 2012, CGGVeritas acquired Fugro's Geoscience Division for €1.2 billion, and changed back its name to CGG. In 2015, CGG applied new full-waveform inversion and reverse-time migration imaging technologies on massive regional-scale, multi-client datasets in Norway, Gabon and the Gulf of Mexico. In 2019, CGG introduced time-lag full-waveform inversion. In 2020, CGG exited seismic acquisition services.

Viridien In May 2024, CGG officially rebranded to Viridien. In April 2025, Sophie Zurquiyah was appointed Chair of the Board, succeeding Philippe Salle in the role.

Operations

Natural Resources Viridien develops geoscience technology to find natural resources and manage those resources sustainably. The organization focuses on oil and gas exploration, development and production; mineral exploration and mine development; and geothermal monitoring. Minerals and mining: Viridien supports mineral exploration through global geological predictions and plate kinematic studies, satellite-derived surface material alteration targeting, provision of geophysical equipment, and the development and provision of modeling software, as well as monitoring services for mining operations and mine tailing storage facilities. Geothermal: Viridien provides global screening datasets, as well as evaluating and monitoring geothermal developments to gain insight across asset life cycle by utilizing: data and analytics, resource assessments, reservoir characterization, and production and monitoring.

Environmental Viridien utilizes analytics and Earth monitoring to understand and provide insights about human impact on the environment. Viridien focuses on environmental insight (on land, ocean, or atmosphere) through remote sensing, machine learning analytics, data analysis and interpretation, and high performance computing (HPC). Some of the environmental projects in which Viridien has worked on include conducting microplastics pollution surveys as part of a study for an effort to create a Plastic Free zone at Yr Wydffa (Snowdon).

Infrastructure Viridien utilizes monitoring technology and digital twin models to understand an infrastructure’s life span, condition and maintenance needs. Viridien Sercel Structural Monitoring solutions detect potential issues early on to provide structure integrity and public safety. One of the known applications of Viridien infrastructure monitoring technology is in its work on the "Connected Bridges" project for a French public body. Viridien contributed to the implementation of autonomous sensors and cloud-based signal processing.

Energy Transition Viridien is focused on monitoring geothermal developments, carbon capture utilization and storage, and management of minerals. Viridien provides datasets to help identify and screen suitable sites for geological carbon storage. Viridien has screening, evaluating and monitoring capabilities for subsurface risks, helping to speed-up development and minimize risk. Additionally, Viridien works on responsible management of minerals for energy transition.

Digital Viridien has digital capabilities in data management, data transformation, machine learning and cloud services. In 2023, the Viridien HPC hub in the UK helped increase its global total HPC capacity to 500 petaflops, and the HPC business has expanded its commercial offering with AI cloud services.

Organization Viridien is divided into two segments: • Data, digital and energy transition • Sensing and monitoring

Data, Digital and Energy Transition This includes geoscience (subsurface imaging, geology, reservoir, technology function) and Earth data. Earth data includes the vast Viridien library of Earth data and digital ecosystems for data that assists in natural resource development and energy transition applications.

Sensing and Monitoring Sercel designs and manufactures solutions for subsurface exploration, structural monitoring, defense and underwater acoustics.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Viridien

Start with the simplest possible case. Write down what Viridien claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Viridien before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Viridien ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Viridien

In research: Viridien appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Viridien in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Viridien is common in secondary-school and first-year university syllabi. It links to neighbouring topics Companies based in Paris, Companies formerly listed on the New York Stock Exchange, Companies listed on Euronext Paris, so understanding it makes those chapters shorter.
In everyday life: Look for Viridien outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Viridien” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Viridien in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Viridien means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Viridien out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Viridien in simple terms?

Viridien (VIRI), formerly CGG, is a multinational technology, digital and Earth data company, specializing in solving complex natural resource, energy transition and infrastructure challenges. History In 1926, Conrad Schlumberger, and his brother Marcel Schlumberger, formed Société de Prospection E…

Why does Viridien matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Viridien?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Viridien.