Company lists · Data refreshed September 2026

Top 25 Oil gas consulting firms based in the United States

RevenueBase identified 2,368 company matches for oil gas consulting firms associated with the United States as of September 2026 and tracks 107,441 professional contacts across them, including 31,610 with verified work emails. Houston is the largest hub.

This list covers company matches for oil gas consulting firms associated with the United States, 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 September 21, 2026.

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 Sep 21, 2026 How this list was built
2,368Companies
107,441Contacts tracked
31,610Verified emails
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The 25 largest oil gas consulting firms based in the United States

Ranked by team size
Top 25 of 2,368 company matches for oil gas consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHouston, TX, United StatesHQ recorded Sep 21, 202610001+53,380 contacts →

Exact match

“We collaborate and engineer solutions to maximize asset value for our customers.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchTorrance, CA, United StatesHQ recorded Sep 21, 20261,001-5,0001,358 contacts →

Exact match

“Partner Assessment Corp.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchSouthfield, MI, United StatesHQ recorded Sep 21, 20261,001-5,0001,290 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 · Sep 21, 2026 · View company records in RevenueBase
4Exact matchThe Woodlands, TX, United StatesHQ recorded Sep 21, 20261,001-5,0001,285 contacts →

Exact match

“Cudd offers a broad range of technical and specialized oilfield services to companies engaged in the exploration and production of oil and natural gas worldwide.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchDenver, CO, United StatesHQ recorded Sep 21, 20261,001-5,0001,231 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 · Sep 21, 2026 · View company records in RevenueBase
6Exact matchMinneapolis, MN, United StatesHQ recorded Sep 21, 20261,001-5,0001,088 contacts →

Exact match

“Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Sep 21, 20261,001-5,0001,046 contacts →

Exact match

“At Gulf Companies, we are driven by our mission to serve a vital role in the global energy industry.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchSan Antonio, TX, United StatesHQ recorded Sep 21, 20261,001-5,000770 contacts →

Exact match

“Pioneer Energy Services is now Patterson-UTI”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchCleveland, OK, United StatesHQ recorded Sep 21, 20261,001-5,000761 contacts →

Exact match

“Cleveland Integrity Services offers support services to companies in the Energy, Telecommunications, and Power industries.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Sep 21, 20261,001-5,000715 contacts →

Exact match

“For 25 years Capco’s Energy practice has combined innovative thinking with deep industry knowledge to provide business consulting, digital transformation and technology services…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchMetairie, LA, United StatesHQ recorded Sep 21, 2026501-1,000700 contacts →

Exact match

“EDG Inc.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchGalliano, LA, United StatesHQ recorded Sep 21, 20261,001-5,000612 contacts →

Exact match

“Established in 1948 in Grand Isle, LA, GIS began as a modest company serving the commercial fishing industry.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchMiami, FL, United StatesHQ recorded Sep 21, 2026501-1,000580 contacts →

Exact match

“Somos una empresa multinacional líder en servicios de Consultoría de Oil & Gas, IT, Ingeniería, Recursos Humanos, Head Hunter y Proyectos”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchLongview, TX, United StatesHQ recorded Sep 21, 2026501-1,000578 contacts →

Exact match

“Since 1991, Applied Consultants Inc.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchScott, LA, United StatesHQ recorded Sep 21, 20261,001-5,000570 contacts →

Exact match

“Improving efficiency and reducing costs, all while meeting safety requirements, is the challenge faced by every operator in the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchLiberty Corner, NJ, United StatesHQ recorded Sep 21, 2026501-1,000545 contacts →

Exact match

“Becht partners with industrial operators across the energy and process sectors to solve complex challenges that impact safety, reliability, and profitability.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchRuston, LA, United StatesHQ recorded Sep 21, 2026501-1,000505 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Sep 21, 2026501-1,000476 contacts →

Exact match

“Bastion Technologies is a multi-disciplined engineering and technical services company headquartered in Houston, Texas.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Sep 21, 2026201-500424 contacts →

Exact match

“EnerVest is a top-tier, low-cost oil and natural gas operating company.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchSulphur, LA, United StatesHQ recorded Sep 21, 2026501-1,000420 contacts →

Exact match

“ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Sep 21, 2026n/a386 contacts →

Exact match

“Rigzone is the leading online resource for the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Sep 21, 2026501-1,000379 contacts →

Exact match

“Express Energy Services, a leading oilfield services company, is active in every major hydrocarbon basin in the United States and is a premier provider of products and services…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchHouma, LA, United StatesHQ recorded Sep 21, 2026501-1,000305 contacts →

Exact match

“Performance Energy Services, a Danos company, was formed in to deliver safe, client-focused support to the onshore and offshore energy markets.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchDeer Park, TX, United StatesHQ recorded Sep 21, 2026201-500304 contacts →

Exact match

“KAP Project Services is a leading project management and consulting firm serving the petrochemical, power, LNG, pharmaceutical, and oil & gas industries.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchNew Iberia, LA, United StatesHQ recorded Sep 21, 2026501-1,000291 contacts →

Exact match

“LEAM Drilling Systems, Inc.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 2,368 oil gas consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 31,610 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil gas consulting firms based in the United States at a glance

As of Sep 21, 2026
29.4%Verified-email coverage
45.4Average contacts per company
1-10Median size (employees)
24.2%Largest-city concentration · Houston
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
1,200
11-50
718
51-200
306
201-500
83
501-1,000
29
1,001-5,000
25
5,001-10,000
3
10001+
3

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,368 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “oil gas consulting firms” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 31,610 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 September 21, 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.

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 “oil gas consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil gas consulting firms are there based in the United States?

RevenueBase identified 2,368 company matches for oil gas consulting firms associated with the United States as of September 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?

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

Which city has the most oil gas consulting firms?

Houston leads with 573 company records, followed by Denver (66) and Midland (58).

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 31,610 professional contacts with verified work emails tracked across these 2,368 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 September 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,368 oil gas consulting firms based in the United States. Start with a free account, no credit card.

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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 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.