Company lists · Data refreshed September 2026

Top 25 Gas consulting firms worldwide

Name: Gas consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 4,303 companies tracked

RevenueBase identified 4,303 gas consulting firms worldwide as of September 2026 and tracks 96,787 professional contacts across them, including 22,221 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers gas consulting firms 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 21, 2026. Country and city lists for gas consulting firms 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

4,303Companies

96,787Contacts tracked

22,221Verified emails

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The 25 largest gas consulting firms worldwide

Ranked by team size

Top 25 of 4,303 gas consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to gas consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	WOOD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	10001+	26,949 contacts →
	Partial evidence “Wood is a global leader in consulting and engineering, delivering critical solutions across energy and materials markets.” Source: RevenueBase Database · checked Sep 21, 2026
2	Ortec Group	Indirect evidence	Aix-en-provence, FranceHQ checked Sep 21, 2026	10001+	3,436 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 21, 2026
3	RENCO	Indirect evidence	Pesaro, ItalyHQ checked Sep 21, 2026	1,001-5,000	1,494 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
4	TGS	Partial evidence	Comuna 1, ArgentinaHQ checked Sep 21, 2026	1,001-5,000	1,159 contacts →
	Partial evidence “Somos la compañía de energía lider en la prestación de servicios integrados en la industria Oil & Gas Nuestros servicios y soluciones permiten integran toda la cadena de valor del…” Source: RevenueBase Database · checked Sep 21, 2026
5	Barr Engineering CO	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,088 contacts →
	Partial evidence “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Source: RevenueBase Database · checked Sep 21, 2026
6	Blockchain-Startups-Commnunity	Indirect evidence	Vung Tau, VietnamHQ checked Sep 21, 2026	5,001-10,000	793 contacts →
	Indirect evidence “Exploration and development oilfield” Source: RevenueBase Database · checked Sep 21, 2026
7	Pioneer Energy Services	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	770 contacts →
	Indirect evidence “Pioneer Energy Services is now Patterson-UTI” Source: RevenueBase Database · checked Sep 21, 2026
8	Cleveland Integrity Services	Indirect evidence	Cleveland, OK, United StatesHQ checked Sep 21, 2026	1,001-5,000	761 contacts →
	Indirect evidence “Cleveland Integrity Services offers support services to companies in the Energy, Telecommunications, and Power industries.” Source: RevenueBase Database · checked Sep 21, 2026
9	Deep Industries Limited	Partial evidence	Ahmedabad, IndiaHQ checked Sep 21, 2026	501-1,000	714 contacts →
	Partial evidence “Deep Industries Limited started in the year 1991, with a primary objective of catering the ever increasing demand for Oil and Gas Industry.” Source: RevenueBase Database · checked Sep 21, 2026
10	Integral S.A. Ingenieros Consultores	Indirect evidence	Medellín \| Bogotá \| Lima \| Miami \| Nueva Delhi, ColombiaHQ checked Sep 21, 2026	1,001-5,000	709 contacts →
	Indirect evidence “Over six decades offering our consultancy services locally and internationally, based on ethical principles and commitments, always through honest, socially responsible actions…” Source: RevenueBase Database · checked Sep 21, 2026
11	EDG	Indirect evidence	Metairie, LA, United StatesHQ checked Sep 21, 2026	501-1,000	700 contacts →
	Indirect evidence “EDG Inc.” Source: RevenueBase Database · checked Sep 21, 2026
12	KBR Granherne	Partial evidence	Leatherhead, United KingdomHQ checked Sep 21, 2026	501-1,000	648 contacts →
	Partial evidence “KBR Consulting is one of the world's foremost engineering consultancies specializing in the hydrocarbon and energy industry.” Source: RevenueBase Database · checked Sep 21, 2026
13	Prime Engineering France	Indirect evidence	Boulogne Billancourt, FranceHQ checked Sep 21, 2026	501-1,000	581 contacts →
	Indirect evidence “PRIME Engineering est l’un des acteurs incontournables du conseil en ingénierie.” Source: RevenueBase Database · checked Sep 21, 2026
14	Applied Consultants	Indirect evidence	Longview, TX, United StatesHQ checked Sep 21, 2026	501-1,000	578 contacts →
	Indirect evidence “Since 1991, Applied Consultants Inc.” Source: RevenueBase Database · checked Sep 21, 2026
15	PT Solusi Energy Nusantara	Partial evidence	IndonesiaHQ checked Sep 21, 2026	501-1,000	563 contacts →
	Partial evidence “PT Solusi Energy Nusantara (SENA) is affiliation of PGN Group, a reputable company which has a core business in natural gas distribution and transmission.” Source: RevenueBase Database · checked Sep 21, 2026
16	ACV Tecline Engenharia Ltda	Indirect evidence	Curitiba, BrazilHQ checked Sep 21, 2026	501-1,000	557 contacts →
	Indirect evidence “A ACV Tecline é uma empresa especializada na prestação de serviços voltados, principalmente, para empresas do setor de energia, com destaque para as áreas de petróleo e gás.” Source: RevenueBase Database · checked Sep 21, 2026
17	E2 Consulting Engineers, INC	Partial evidence	Emeryville, CA, United StatesHQ checked Sep 21, 2026	501-1,000	526 contacts →
	Partial evidence “Dedicated to “Excellence in Engineering,” E2 Consulting Engineers, Inc.(E2) is a professional services firm established in 1988 specializing in a full spectrum of engineering…” Source: RevenueBase Database · checked Sep 21, 2026
18	Hunt Guillot & Associates HGA	Partial evidence	Ruston, LA, United StatesHQ checked Sep 21, 2026	501-1,000	505 contacts →
	Partial evidence “HGA is a leading engineering, consulting, and program management company that has been delivering innovative and sustainable solutions to our clients for over 29 years.” Source: RevenueBase Database · checked Sep 21, 2026
19	Spetco International Petroleum CO	Indirect evidence	East Ahmadi, KuwaitHQ checked Sep 21, 2026	501-1,000	445 contacts →
	Indirect evidence “With thirty-five years of excellence in providing pioneering, world-class solutions and services, Safwan Petroleum Technologies Company (Spetco International Petroleum Company) is…” Source: RevenueBase Database · checked Sep 21, 2026
20	Enervest, LTD	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	201-500	424 contacts →
	Partial evidence “EnerVest is a top-tier, low-cost oil and natural gas operating company.” Source: RevenueBase Database · checked Sep 21, 2026
21	Muscat Engineering Consultancy LLC	Indirect evidence	Bowsher, OmanHQ checked Sep 21, 2026	501-1,000	409 contacts →
	Indirect evidence “MEC, a leading engineering and project management consultancy, offers quality-driven technical expertise and customized tailor-fit solutions to our clients from the idea inception…” Source: RevenueBase Database · checked Sep 21, 2026
22	Genesis	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	401 contacts →
	Indirect evidence “Genesis is a market-leading advisory company focused on providing high-value technical and advisory services for the energy industry.” Source: RevenueBase Database · checked Sep 21, 2026
23	Equinox Engineering LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 21, 2026	201-500	397 contacts →
	Indirect evidence “Established in 1997, Equinox is a distinguished EPCM service provider globally.” Source: RevenueBase Database · checked Sep 21, 2026
24	TUAH	Partial evidence	Kuala Lumpur, MalaysiaHQ checked Sep 21, 2026	201-500	387 contacts →
	Partial evidence “TUAH established in 2014 by a team of experienced and ambitious Malaysian Professionals, building a business pipeline in Engineering, Project Consulting, Construction & Asset…” Source: RevenueBase Database · checked Sep 21, 2026
25	Southeast Connections LLC	Partial evidence	Conyers, GA, United StatesHQ checked Sep 21, 2026	1,001-5,000	374 contacts →
	Partial evidence “Since 1996 Southeast Connections, LLC is a contractor specializing in energy infrastructure serving the gas industry.” Source: RevenueBase Database · checked Sep 21, 2026

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: gas consulting firms. 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 gas consulting firms.
Partial evidence: Its own public description names part of gas consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name gas consulting firms. 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 4,303 gas consulting firms worldwide

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Gas consulting firms worldwide at a glance

As of Sep 21, 2026

23.0%Verified-email coverage

22.5Average contacts per company

1-10Median size (employees)

4.8%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

2,435

11-50

1,197

51-200

461

201-500

111

501-1,000

1,001-5,000

5,001-10,000

10001+

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 gas consulting firms, 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 gas consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “gas consulting firms”. 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 gas consulting firms), 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 gas consulting firms, 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, 22,221 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 21, 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.

Gas consulting firms by location

26 lists · largest first

Every Gas consulting firms 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 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 gas consulting firms, 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 gas consulting firms are there worldwide?

RevenueBase identified 4,303 gas consulting firms 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?

WOOD, headquartered in Aberdeen, tops this list with the largest team on record.

Which country has the most gas consulting firms?

The United States leads with 967 companies, followed by Canada (240) and the United Kingdom (235). Every gas consulting firms list by country and city is linked on this page.

Which city has the most gas consulting firms?

Houston leads with 207 headquartered companies, followed by Calgary (143) and London (82).

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 22,221 verified decision-maker contacts tracked across these 4,303 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 21, 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.