Company lists · Data refreshed September 2026
Top 25 Subsurface data interpretation services worldwide
RevenueBase identified 1,486 subsurface data interpretation services worldwide as of September 2026 and tracks 89,975 professional contacts across them, including 24,678 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers subsurface data interpretation services worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026. Country and city lists for subsurface data interpretation services follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest subsurface data interpretation services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 53,380 contacts → | ||||
Indirect evidence “We collaborate and engineer solutions to maximize asset value for our customers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,755 contacts → | ||||
Indirect evidence “Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,775 contacts → | ||||
Partial evidence “TGS provides advanced data and intelligence to companies active in the energy sector.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,685 contacts → | ||||
Indirect evidence “Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,500 contacts → | ||||
Indirect evidence “With over 70 offices in more than 50 countries located in major oil-producing provinces, Core Laboratories provides services to the world's major, national, and independent oil…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,160 contacts → | ||||
Indirect evidence “BGP is one of the world's leading geophysical service companies, delivering a wide range of technologies, services and equipment to the oil and gas industry worldwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 908 contacts → | ||||
Partial evidence “Viridien is an advanced technology, digital and Earth data company that pushes the boundaries of science for a more prosperous and sustainable future.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 834 contacts → | ||||
Indirect evidence “Headquartered in Houston, Texas, Geokinetics is one of the world’s largest independent land and seafloor geophysical companies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 777 contacts → | ||||
Partial evidence “Founded in 1994 and built on a strong geoscience and data management footprint, LMKR has evolved into a premier technology company expanding its reach to Clean Energy…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 761 contacts → | ||||
Partial evidence “From natural resources to earth and infrastructure monitoring, energy transition, and defense, Sercel is a pioneer in measuring and understanding Earth’s subsurface to provide…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 696 contacts → | ||||
Partial evidence “Seequent, The Bentley Subsurface Company, helps organisations to understand the underground, giving them the confidence to make better decisions faster.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 583 contacts → | ||||
Indirect evidence “ION commenced the voluntary Chapter 11 process with lender support and DIP financing in April 2022.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 521 contacts → | ||||
Indirect evidence “SAExploration offers a full range of geophysical ground acquisition services from design, prospecting, drilling, recording and analysis of field quality, as well as mobilization…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 512 contacts → | ||||
Indirect evidence “ARGAS, since its inception in 1966, was focused on developing Geological and Geophysical field solutions to further explore the earth’s Natural Resources.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 466 contacts → | ||||
Partial evidence “IFS Energy and Resources is the world’s largest independent provider of software and data solutions exclusively serving the upstream oil and gas, mining, and resource industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 396 contacts → | ||||
Partial evidence “GGS provides an integrated suite of Geoscience solutions to the global oil and gas industry including high-resolution RG-3D Reservoir Grade® seismic data acquisition, Multi Client…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 362 contacts → | ||||
Partial evidence “Petrolink is an independent, neutral, wellsite data solutions company providing services in major oil and gas regions worldwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 339 contacts → | ||||
Indirect evidence “Java Offshore, established in 2010, is a leading independent Offshore Services Contractor providing a range of Geophysical, Geotechnical and Subsea related solutions to marine…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 310 contacts → | ||||
Indirect evidence “We deliver innovative geophysical, geological and geotechnical solutions for energy sector as well as renewable energy in Poland and worldwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 300 contacts → | ||||
Indirect evidence “ASIAN is a reservoir imaging company, offering a suite of geophysical services specializing in land and well seismic services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 270 contacts → | ||||
Strong evidence “Katalyst Data Management provides subsurface data management and digital transformation solutions for the oil and gas industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 268 contacts → | ||||
Indirect evidence “Reserves assessments and appraisals • Prospective resources assessments • Unconventional resources assessments • Contingent resources assessments • Reservoir simulation •…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 267 contacts → | ||||
Partial evidence “Innovators in Simulation Technology CMG is a global software and consulting company that combines science and technology with deep industry expertise to solve complex subsurface…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 267 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 241 contacts → | ||||
Partial evidence “Sulmara is a global seabed intelligence company, capturing and interpreting high-quality subsea data to enable smarter offshore decisions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: subsurface data interpretation services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names subsurface data interpretation services.
- Partial evidence
- Its own public description names part of subsurface data interpretation services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name subsurface data interpretation services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 1,486 subsurface data interpretation services worldwide
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Subsurface data interpretation services worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among subsurface data interpretation services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for subsurface data interpretation services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “subsurface data interpretation services”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names subsurface data interpretation services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among subsurface data interpretation services, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 24,678 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Subsurface data interpretation services by location
12 lists · largest firstEvery Subsurface data interpretation services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Subsurface data interpretation services based in the United States392
- Subsurface data interpretation services based in the United Kingdom150
- Subsurface data interpretation services based in Canada129
- Subsurface data interpretation services based in Australia65
- Subsurface data interpretation services based in India35
- Subsurface data interpretation services based in Indonesia34
- Subsurface data interpretation services based in Norway30
- Subsurface data interpretation services based in Brazil29
- Subsurface data interpretation services based in France28
Cities
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names subsurface data interpretation services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many subsurface data interpretation services are there worldwide?
RevenueBase identified 1,486 subsurface data interpretation services worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Halliburton, headquartered in Houston, tops this list with the largest team on record.
Which country has the most subsurface data interpretation services?
The United States leads with 392 companies, followed by the United Kingdom (150) and Canada (129). Every subsurface data interpretation services list by country and city is linked on this page.
Which city has the most subsurface data interpretation services?
Houston leads with 146 headquartered companies, followed by Calgary (91) and London (37).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 24,678 verified decision-maker contacts tracked across these 1,486 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.