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Industry Primers

Bottom-up NAICS industry primers written for both public-market and private investors. Leaf industries are researched from the ground up; every group, subsector, and sector above them reads as a contrast across the industries beneath it.

2122 industries · 24 sectors · NAICS 2022

Researched with AI assistance from official U.S. statistics and independent sources, with citations on every page. Figures are not individually verified against pinned evidence — primers marked Evidence-verified are. Industry research, not investment advice. Methodology.

IndustryNAICS 54136Professional, Scientific, and Technical Services

Geophysical Surveying and Mapping Services (U.S., NAICS 54136)

A Histometrics rollup primer for public-market and private investors.

1. Overview

NAICS (the North American Industry Classification System, the U.S. federal scheme for classifying industries) code 54136 is the "NAICS industry" level for Geophysical Surveying and Mapping Services — the business of "seeing" underground and undersea without digging. Firms send energy into the earth (sound waves, magnetic and electromagnetic fields, gravity and radioactivity measurements) and read what comes back to map rock layers, fluids and structures below the surface. The product is information that de-risks a large capital decision: where to drill, where to route a cable or tunnel, where to store carbon, where a mineral deposit might sit. The classic buyer is an oil-and-gas explorer sizing a prospect before spending tens of millions on a well; newer buyers include offshore-wind developers, carbon-storage projects, mineral explorers, infrastructure engineers and government mapping agencies.[1]

This is a short "pass-through" page. At this level of the taxonomy the industry is effectively identical to its single child, NAICS 541360, so the substance — structure, economics, named companies, regulation and risk — lives in that leaf primer. This page explains why the two levels coincide, states 54136's own ground-truth federal statistics, and sends the reader to 541360 for full detail.

For an investor the headline is the same at both levels: a small, highly cyclical, technically deep service niche that sits upstream of much larger capital budgets, with no large, liquid U.S.-listed pure-play and most domestic activity in small, privately held hands.

2. What's inside — and why this level equals its one child

The NAICS hierarchy runs from broad to narrow: sector (2-digit) → subsector (3-digit) → industry group (4-digit) → NAICS industry (5-digit) → national industry (6-digit). Code 54136 is a 5-digit NAICS industry, and it contains exactly one 6-digit national industry beneath it:

Child code Name Relationship to 54136
541360 Geophysical Surveying and Mapping Services The sole child — carries 100% of the level

Because there is only one child, 54136 and 541360 describe the same activity and the same firms — the 5-digit code is simply the parent slot that the single 6-digit industry hangs from. There is no aggregation to do and no sibling industries to blend; the concentration ratios, receipts, employment and payroll reported for the two codes are the same numbers. Everything that is true of 541360 — the split into field acquisition, data processing/imaging, multi-client data libraries and instruments; the boundary that excludes ordinary land, cadastral and GIS (geographic information system) mapping (which sit in the larger NAICS 541370); and the barbell of a few foreign-domiciled majors over a long domestic tail of small firms — is true of 54136.[1]

Read the child primer (541360) for the full treatment. The sections below are deliberately brief.

3. How big it is

The table gives Histometrics' ingested ground-truth federal statistics for NAICS 54136. Because the level has one child, these equal the 541360 figures. The readings come from different federal programs and reference years, so treat them as related gauges, not one financial statement.

Metric (U.S. establishments) Value Source / year
Receipts $1.53 billion 2022 Economic Census [2]
Firms 769 2022 Economic Census [2]
Establishments 993 County Business Patterns 2023 [2]
Paid employees 7,007 County Business Patterns 2023 [2]
Annual payroll $764.4 million County Business Patterns 2023 [2]
First-quarter payroll $194.7 million County Business Patterns 2023 [2]
CR4 / CR8 / CR20 / CR50 (share of receipts held by the top 4 / 8 / 20 / 50 firms) 20.8% / 30.4% / 48.2% / 67.8% 2022 Economic Census [2]
HHI (Herfindahl-Hirschman Index, the standard concentration measure) 213.9 2022 Economic Census [2]
SBA small-business size standard $28.5 million in annual receipts SBA 2023 [3]

Two features carry over from the child. Pay is high — roughly $109,000 per employee (annual payroll ÷ employees)[2] — consistent with a workforce of geophysicists, data processors and specialized field technicians. And the industry is statistically unconcentrated: the top 4 firms hold just 20.8% of receipts and the top 50 hold 67.8%, with an HHI of 213.9 (regulators treat 1,500+ as "concentrated").[2] That reflects a long tail of smaller firms, not control by a few listed companies.

Undercount caveat — read this before trusting the $1.53 billion. The figure is best read as reported receipts of U.S. employer firms, not total U.S. demand for subsurface intelligence. It understates the real footprint because: the Economic Census excludes nonemployer businesses (solo operators) and County Business Patterns excludes work performed inside government agencies, so solo contractors and public-sector geophysics are missing and the federal sources give no estimate of the gap;[4] the majors that shoot and license most seismic data consumed here (TGS of Norway, Viridien/CGG of France, Fugro of the Netherlands, Shearwater of Norway) are foreign-domiciled with much data acquired offshore, so their receipts sit largely outside the U.S. count; and contract seismic acquisition for oil and gas can be classified under NAICS 213112 (oilfield support) rather than 541360, leaking spending into a different bucket.[1] For scale, third-party researchers estimate the global geophysical-services market at roughly $16.6 billion in 2025 — more than ten times the U.S. Census receipts (a private forecast, not federal data).[23] Net: treat $1.53 billion as the U.S.-domiciled, employer-firm slice of a much larger, globally organized activity.

4. The investable universe

With a single child, value concentrates exactly as it does in 541360 — there are no other sub-industries to spread it across. There is no large U.S.-listed pure-play; the cleanest direct exposures are foreign-listed data/marine majors plus two U.S. small-caps. Treat every listed name as an exposure vehicle, not a one-for-one proxy for the U.S. code.

  • Foreign-listed data / marine majors: TGS (Oslo; U.S. OTC ADR TGSGY) — the world's largest energy-data / seismic company after buying PGS (2024); Viridien, formerly CGG (Euronext Paris; U.S. OTC) — asset-light subsurface imaging plus the Sercel instrument business; Fugro (Euronext Amsterdam: FUR) — offshore geo-data and site characterization.[8][9][10][11]
  • U.S. small-caps: Dawson Geophysical (Nasdaq: DWSN) — the last U.S.-listed onshore ("land") seismic contractor, ~79% controlled by the Wilks Brothers; Geospace Technologies (Nasdaq: GEOS) — seismic instruments/nodes and reservoir monitoring (equipment, not survey services).[5][7][12]
  • Private / other owners — where most of the domestic industry lives: Shearwater GeoServices (private, Norway; largest marine-acquisition fleet); independent airborne-survey firms flying magnetic/radiometric/EM surveys (well-suited to government critical-minerals work); and a long tail of small onshore crews, geotechnical shops and employee- or family-owned engineering-and-geospatial platforms — most below the $28.5m SBA (Small Business Administration) small-business line, i.e. direct-ownership and private-equity roll-up territory.[3][13][14][18]

Full company table and the diversified proxies (SLB, TIC Solutions, Tetra Tech) are in the 541360 primer.

5. How the money works

Identical to the child. Owners earn in three ways: (a) contract / proprietary acquisition, a utilization business where crew, vessel and instrument use — plus day-rates, field productivity and capital intensity — drive returns, with backlog as the forward indicator; (b) multi-client data libraries, a data-royalty model where a firm shoots data "on spec" and licenses it non-exclusively for years, gated by prefunding, late sales and library amortization/impairment (TGS reported roughly 2x license revenue per dollar of survey investment); and (c) processing, interpretation, software, monitoring and instruments, less vessel-intensive and stickier when embedded in a customer's workflow.[6][9][10][12][16] Federal statistics provide none of these operating metrics for this code — no utilization, backlog, margin, capex, or private-versus-government split. The defining feature is cyclicality: survey revenue is a derivative of upstream exploration-and-production (E&P) capital spending, and exploration is the most discretionary, first-to-be-cut line in an oil budget.

6. What drives demand

Same drivers as 541360: upstream oil-and-gas E&P capex (still dominant — frontier exploration, offshore development and 4-D "time-lapse" reservoir monitoring); the fast-growing ocean-bottom node (OBN) and 4-D offshore segment; offshore-wind and transmission site characterization (a recent U.S. Atlantic driver, but policy- and rate-sensitive); infrastructure and utilities (roads, tunnels, water, pipelines, data centers) that need subsurface mapping before construction; critical minerals and mining (airborne surveys for copper, lithium and rare earths, partly government-funded); and carbon capture and storage (CCS), geothermal and groundwater.[6][9][11][17][18][23] Third-party researchers project the global market growing at roughly a 3.8% compound annual growth rate to about $24 billion by 2035, with the energy-transition slice growing fastest (forward estimates, not federal data).[23]

7. Regulation

Geophysics is not price-regulated; the binding constraints are environmental permitting and access, heaviest offshore — a commercial barrier as much as a cost. Marine seismic can "take" (harass) marine mammals, so the National Marine Fisheries Service (part of NOAA, the National Oceanic and Atmospheric Administration) issues incidental-take authorizations under the Marine Mammal Protection Act, which can trigger Endangered Species Act and National Environmental Policy Act (NEPA) reviews. Offshore-renewables surveys run through the Bureau of Ocean Energy Management (BOEM); onshore work on Bureau of Land Management (BLM) land needs a notice-and-authorization process and can trigger NEPA review. Government is also a buyer and producer: the USGS (U.S. Geological Survey) Earth Mapping Resources Initiative (Earth MRI) funds airborne critical-minerals surveys at roughly $74 million a year (2022–2026), a meaningful counter-cyclical revenue source for airborne specialists. Full detail is in the child primer.[18][20][21][22]

8. Consolidation

The federal concentration data describe a fragmented U.S. market (CR4 20.8%, HHI 213.9)[2], but the last decade rewired the global top end through a brutal down-cycle. In marine seismic, SLB (Schlumberger) exited field acquisition and sold its WesternGeco fleet to Shearwater (2018), CGG exited marine acquisition and rebranded to Viridien, ION Geophysical went bankrupt (2022, absorbed by TGS), and TGS and PGS merged (2024) into the largest energy-data company — turning a crowded field into a handful. Onshore U.S. consolidation and bankruptcy left Dawson as effectively the only listed land contractor (now ~79% Wilks-controlled, with take-private discussions ongoing). Elsewhere, consolidation is capability-led — adding licenses, contract vehicles, teams, equipment or data rights. See 541360 for the full history.[7][8][13][15]

9. Risks

Same risk set as the child, dominated by oil-price and E&P-capex cyclicality (exploration is the first line cut). Also: structural decline in frontier exploration (shifting mix toward development and monitoring); overcapacity and pricing collapse (repeated bankruptcies); project-execution risk (weather, vessel downtime, access, cost overruns); policy-dependent energy-transition demand (offshore wind and CCS hinge on subsidies, permits, rates and political will — U.S. offshore-wind momentum has cooled); environmental permitting and litigation; data-library impairment; customer concentration; technology/cyber disruption (nodes displacing streamers, sensitive-infrastructure data); and leverage/governance risk in both PE roll-ups and thinly traded, controlled public names (DWSN, GEOS).[7][11][15][16][17][20]

10. How to invest, and the outlook

Because 54136 equals 541360, the playbook is the child's. Public-market routes are limited — start from business-model exposure, not ticker selection: Dawson (DWSN) for a micro-cap onshore land-seismic bet (thin float, ~79% Wilks control, possible take-private); Geospace (GEOS) for instruments/nodes; and the foreign-listed majors TGS, Viridien and Fugro for multi-client/OBN, asset-light imaging and offshore-wind/site-characterization exposure respectively. Normalize currencies, reporting periods, debt, capex and segment definitions before comparing valuations. Private / direct routes are where most of the domestic industry lives — Shearwater, independent airborne-survey firms positioned for government critical-minerals contracts, and a long tail of small onshore and geotechnical shops below the $28.5m SBA line, suited to direct ownership or PE consolidation; diligence transferable customer relationships, data-ownership and reuse rights, repeat revenue, permit history, equipment condition and founder dependence.[3][5][7][8][9][10][11][12][13][18]

Outlook (forward-looking judgment). Near-term U.S. onshore demand looks modestly better than the 2024 trough, while the global market is projected to grow at a low-single-digit rate to the mid-2030s, with growth shifting from mature frontier exploration toward OBN/4-D reservoir work and energy-transition uses (CCS, minerals, geothermal). The long-term need for subsurface intelligence is durable, but the earnings path will not be smooth — a small, deep-cyclical, technically demanding industry to size and time carefully, not to own passively. For the full analysis, valuations, company table and sourcing, read the NAICS 541360 primer.[8][11][17]

Sources

Drawn from the child primer (NAICS 541360); citation numbers preserved for cross-reference.

  1. U.S. Census Bureau. 2022 NAICS Definition — 541360 Geophysical Surveying and Mapping Services (2022). https://www.census.gov/naics/?details=541360&input=541360&year=2022
  2. U.S. Census Bureau. 2022 Economic Census (receipts, firms, concentration ratios, HHI) and County Business Patterns 2023 (establishments, employment, payroll) for NAICS 541360 / 54136 — Histometrics ingested federal statistics. https://www.census.gov/programs-surveys/economic-census.html; https://www.census.gov/programs-surveys/cbp.html
  3. U.S. Small Business Administration. Table of Small Business Size Standards — NAICS 541360, $28.5 million (2023). https://www.sba.gov/document/support-table-size-standards
  4. U.S. Census Bureau. County Business Patterns: Coverage / methodology (employer-only universe; nonemployer and government exclusions). https://www.census.gov/programs-surveys/cbp/technical-documentation.html
  5. PR Newswire / Dawson Geophysical Company. Fourth Quarter and Year-End 2024 Results and full-year 2025 results (revenue, capex) (2025). https://www.prnewswire.com/news-releases/dawson-geophysical-reports-fourth-quarter-and-year-end-2024-results-302414582.html
  6. PR Newswire / Dawson Geophysical Company. Third Quarter 2025 Results (backlog, crew utilization, capex) (2025). https://www.prnewswire.com/news-releases/dawson-geophysical-reports-third-quarter-2025-results-302613559.html
  7. Dawson Geophysical Company. 2025 Form 10-K/A — Wilks Brothers ~79% voting control and special-committee review (SEC; StockTitan) (2026). https://www.sec.gov/Archives/edgar/data/799165/000110465926053054/dwsn-20251231x10ka.htm
  8. TGS. TGS and PGS Combine to Establish the Premier Energy Data Company (merger completed July 1, 2024). https://www.tgs.com/press-releases/tgs-and-pgs-combine-to-establish-the-premier-energy-data-company
  9. TGS. Q4 2024 Results (market cap ~NOK 20.7bn; multi-client sales-to-investment ~2.2x) and 2025 Annual Report (>95% hydrocarbon-related revenue; sales-to-investment ~2.0x) (2025–2026). https://www.tgs.com/investor-center
  10. Marine Technology News. CGG Rebrands to Viridien (2024); Viridien, New Ticker Symbol (VIRI) and Full-Year 2025 Financial Update (2024–2026). https://www.marinetechnologynews.com/news/rebrands-viridien-636825
  11. Fugro. Annual Report 2025 and Share Capital (Euronext Amsterdam: FUR) (2026); Offshore Energy, Offshore-wind growth brings Fugro strong start of the year (2024 revenue ~€2.3bn; ~35% offshore site-characterization share). https://www.fugro.com/investors/shares/share-capital
  12. Geospace Technologies. Fourth Quarter and Fiscal Year 2024 Results and 2025 Form 10-K / FY2025 results (BusinessWire; SEC; StockAnalysis) (2024–2025). https://stockanalysis.com/stocks/geos/
  13. Journal of Petroleum Technology (SPE). Schlumberger Exits Seismic Acquisition Business (2018); SLB, Shearwater to Acquire Schlumberger Marine Seismic Acquisition Business (2018). https://jpt.spe.org/schlumberger-exits-seismic-acquisition-business
  14. Companies House (UK). Shearwater Geoservices Limited — Persons with Significant Control (Rasmussengruppen AS, >75%) (2026). https://find-and-update.company-information.service.gov.uk/company/07474273/persons-with-significant-control
  15. Bloomberg, Oil Market's Caution Bankrupts Seismic Mapper Ion Geophysical (2022); Hart Energy / GlobeNewswire, SAExploration to Acquire Assets of Geokinetics Out of Bankruptcy (2018). https://www.hartenergy.com/news/saexploration-buy-certain-assets-bankrupt-geokinetics-117569/
  16. Offshore Magazine. Multi-client acquisition surveys offer opportunities, challenges (prefunding, late sales, library write-downs). https://www.offshore-mag.com/geosciences/article/16754749/multi-client-acquisition-surveys-offer-opportunities-challenges
  17. Offshore Magazine / SLB. Ocean-bottom node seismic market gains momentum and OBN market/technology overview (2024–2025). https://www.offshore-mag.com/geosciences/article/14040688/ocean-bottom-node-seismic-market-gains-momentum
  18. U.S. Geological Survey / Grist. Earth Mapping Resources Initiative (Earth MRI) — airborne magnetic/radiometric critical-minerals surveys, ~$74m/yr 2022–2026. https://www.usgs.gov/special-topics/earth-mri/data
  19. NOAA Fisheries. Incidental Take Authorizations Under the Marine Mammal Protection Act; Federal Register / NOAA, Taking Marine Mammals Incidental to Geophysical Surveys in the Gulf of America/Gulf of Mexico (50 CFR Part 217, Subpart S) (2021–2026). https://www.fisheries.noaa.gov/permit/incidental-take-authorizations-under-marine-mammal-protection-act
  20. Bureau of Ocean Energy Management. Survey Guidelines for Renewable Energy Development (Outer Continental Shelf site characterization) (2026). https://www.boem.gov/renewable-energy/survey-guidelines-renewable-energy-development
  21. Bureau of Land Management. Oil & Gas Geophysical Exploration on Federal Land (notice-and-authorization process) (2026). https://www.blm.gov/programs/energy-and-minerals/oil-and-gas/exploration
  22. U.S. Department of Energy. Geothermal Exploration and Characterization (geophysics/remote sensing/subsurface characterization). https://www.energy.gov/hgeo/geothermal/exploration-and-characterization
  23. SNS Insider / GlobeNewswire, Geophysical Services Market Size to Surpass USD 24.16 Billion by 2035 (global ~$16.6bn in 2025; ~3.8% CAGR) (2026); GMInsights, Geophysical Services Market (2025). https://www.gminsights.com/industry-analysis/geophysical-services-market