Company lists · Data refreshed October 2026

Top 25 Environmental consulting companies for oil and gas worldwide

Name: Environmental consulting companies for oil and gas worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 23,197 companies tracked

RevenueBase identified 23,197 company matches for environmental consulting companies for oil and gas worldwide as of October 2026 and tracks 425,863 professional contacts across them, including 101,622 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for environmental consulting companies for oil and gas worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 12, 2026. Country and city lists for environmental consulting companies for oil and gas follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 12, 2026 How this list was built

23,197Companies

425,863Contacts tracked

101,622Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest environmental consulting companies for oil and gas worldwide

Ranked by team size

Top 25 of 23,197 company matches for environmental consulting companies for oil and gas worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	WOOD	Exact match	Aberdeen, United KingdomHQ recorded Oct 12, 2026	10001+	16,351 contacts →
	Exact match “Wood is a global leader in consulting and engineering, delivering critical solutions across energy and materials markets.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	PT Elnusa TBK	Exact match	Jakarta Selatan, IndonesiaHQ recorded Oct 12, 2026	1,001-5,000	4,167 contacts →
	Exact match “We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Ortec Group	Exact match	Aix-en-provence, FranceHQ recorded Oct 12, 2026	10001+	3,504 contacts →
	Exact match “En conjuguant depuis sa création audace et rigueur, le groupe Ortec est devenu aujourd’hui un des leaders des services à l’industrie, l’énergie et l’environnement.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Golder	Exact match	Vancouver, BC, CanadaHQ recorded Oct 12, 2026	5,001-10,000	3,241 contacts →
	Exact match “Golder was acquired by WSP.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Langan Engineering & Environmental Services	Exact match	Parsippany, NJ, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,402 contacts →
	Exact match “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	SRK Consulting	Exact match	Vancouver, CanadaHQ recorded Oct 12, 2026	1,001-5,000	2,360 contacts →
	Exact match “SRK Consulting is an independent, international group providing specialised consultancy services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Hazen And Sawyer	Exact match	New York, NY, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,251 contacts →
	Exact match “As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Civil & Environmental Consultants, INC	Exact match	Moon Township, PA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,204 contacts →
	Exact match “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Englobe	Exact match	Québec, QC, CanadaHQ recorded Oct 12, 2026	1,001-5,000	1,864 contacts →
	Exact match “Englobe is a leader in the fields of engineering, gesosciences, environmental management, asset integrity and quality management.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Aarvi Encon	Exact match	Mumbai, IndiaHQ recorded Oct 12, 2026	5,001-10,000	1,862 contacts →
	Exact match “Aarvi Encon has established it's leadership in providing Engineering Consultancy and Technical Assistance to Oil & Gas, Refinery, Petrochemical, Pipelines, Power & Infrastructure…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Burns & Mcdonnell India	Exact match	Vikhroli West, IndiaHQ recorded Oct 12, 2026	1,001-5,000	1,828 contacts →
	Exact match “At Burns & McDonnell India, we are a diverse team of talented engineers with multidiscipline design and consultancy working across sectors in critical infrastructure: oil and gas…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Pt. Surveyor Indonesia	Exact match	IndonesiaHQ recorded Oct 12, 2026	1,001-5,000	1,721 contacts →
	Exact match “Surveyor Indonesia was incepted on 1 August 1991.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Robtstone ME LLC	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Oct 12, 2026	1,001-5,000	1,695 contacts →
	Exact match “At Robt.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,661 contacts →
	Exact match “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Vulcain Engineering Group	Exact match	Neuilly-sur-seine, FranceHQ recorded Oct 12, 2026	5,001-10,000	1,643 contacts →
	Exact match “Vulcain Engineering Group is a multi-specialist engineering and consulting group serving industrial companies across the globe, focused on critical sectors: energy, health…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Chiyoda Corporation	Exact match	Yokohama, JapanHQ recorded Oct 12, 2026	5,001-10,000	1,632 contacts →
	Exact match “Since its establishment in 1948, Chiyoda's business field has covered the energy sector such as oil and gas industry including energy conservation, and chemicals, environment…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	RENCO	Exact match	Pesaro, ItalyHQ recorded Oct 12, 2026	1,001-5,000	1,534 contacts →
	Exact match “Renco S.p.A, an Italian company founded in 1979, is continually committed to providing its Clients with sound business solutions in an ever increasingly complex and challenging…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Atwell, LLC	Exact match	Southfield, MI, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,499 contacts →
	Exact match “Atwell is a full-service consulting, engineering and construction services firm that delivers a broad range of creative solutions to clients in the real estate and land…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Partner Engineering & Science, INC	Exact match	Torrance, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,418 contacts →
	Exact match “Partner Assessment Corp.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	PMI	Exact match	Irvine, CA, United StatesHQ recorded Oct 12, 2026	n/a	1,361 contacts →
	Exact match “Training and Development Solutions” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Knight Piesold	Exact match	Denver, CO, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,326 contacts →
	Exact match “Knight Piésold is an employee-owned, global consulting firm providing specialist services to the mining, power, water resources, and infrastructure industries.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	PT Pertamina Drilling Services Indonesia	Exact match	South Jakarta, IndonesiaHQ recorded Oct 12, 2026	1,001-5,000	1,300 contacts →
	Exact match “PT Pertamina Drilling Services Indonesia (Pertamina Drilling) was established on June 13th, 2008.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	AL Turki Enterprises L.L.C	Exact match	United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,268 contacts →
	Exact match “At Al Turki’s Oil and Gas Division, we carry out multi-disciplined Engineering Design, Procurement and Construction service in the southern region of Oman with our Off-plot…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,266 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	DGE Danmark	Exact match	Højbjerg, DenmarkHQ recorded Oct 12, 2026	n/a	1,171 contacts →
	Exact match “Miljø er vores kernekompetence og vores ansvar.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “environmental consulting companies for oil and gas”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 23,197 environmental consulting companies for oil and gas worldwide

See the full list, filter by size, metro and specialty, and access 101,622 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Environmental consulting companies for oil and gas worldwide at a glance

As of Oct 12, 2026

23.9%Verified-email coverage

18.4Average contacts per company

1-10Median size (employees)

2.1%Largest-city concentration · Houston

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

12,415

11-50

7,208

51-200

2,407

201-500

655

501-1,000

213

1,001-5,000

176

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for environmental consulting companies for oil and gas are linked below.
What qualifies: Company records worldwide whose business descriptions match “environmental consulting companies for oil and gas” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 101,622 professional contacts with verified work emails across the full matched dataset. 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 October 12, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Environmental consulting companies for oil and gas by location

107 lists · largest first

Every Environmental consulting companies for oil and gas list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “environmental consulting companies for oil and gas”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental consulting companies for oil and gas are there worldwide?

RevenueBase identified 23,197 company matches for environmental consulting companies for oil and gas worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

WOOD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most environmental consulting companies for oil and gas?

The United States leads with 4,757 companies, followed by Brazil (2,446) and Canada (1,192). Every environmental consulting companies for oil and gas list by country and city is linked on this page.

Which city has the most environmental consulting companies for oil and gas?

Houston leads with 497 company records, followed by Calgary (371) and Sao Paulo (226).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 101,622 professional contacts with verified work emails tracked across these 23,197 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 12, 2026.

Ready to reach these companies? Verified emails and direct dials for all 23,197 environmental consulting companies for oil and gas worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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 SmartSearch, 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.