Company lists · Data refreshed September 2026
Top 25 Oil and gas consulting firms based in Houston, United States
RevenueBase identified 572 oil and gas consulting firms headquartered in Houston, United States as of September 2026 and tracks 67,073 professional contacts across them, including 17,898 with verified work emails. Houston is the largest hub.
This list covers oil and gas consulting firms headquartered in Houston, United States, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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.
The 25 largest oil and gas consulting firms based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | HalliburtonIndirect evidence | 53,380 | |||
“We collaborate and engineer solutions to maximize asset value for our customers.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,755 | ||||
“Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 424 | ||||
“EnerVest is a top-tier, low-cost oil and natural gas operating company.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | OIL & GAS Jobs By RigzoneStrong evidence | 386 | |||
“Rigzone is the leading online resource for the oil and gas industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 379 | ||||
“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…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | Greene's Energy GroupStrong evidence | 285 | |||
“Greene’s Energy Group offers a range of support services and products to the oil and gas industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | NEW Tech GlobalStrong evidence | 245 | |||
“New Tech Global (NTG) is comprised of 5 different business units: New Tech Global Ventures: Upstream Oil & Gas consultancy services, and W-2 professional placement services for…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 239 | ||||
“Cenergy is a dynamic company that supplies expert workforce solutions to the World's Leading Industries.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | Yellowjacket Oilfield ServicesIndirect evidence | 223 | |||
“Yellowjacket Oilfield Services offers cost-effective solutions by leveraging state of the art equipment & technology along with superior personnel.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 191 | ||||
“Getting it done right.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | Zentech IncorporatedPartial evidence | 181 | |||
“Zentech, Inc, an engineering consulting and software development company, headquartered in Houston, TX, is comprised of experienced professionals specializing in providing…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 179 | ||||
“EAG is a Houston-based, privately held consulting, back-office outsourcing, and IT outsourcing firm that delivers products and services primarily to the upstream and midstream oil…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 160 | ||||
“CIMA® is a wholly owned subsidiary of Mitsubishi Corporation.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 154 | ||||
“Since 1987, The Bergaila Companies have been matching talented people with great jobs in oil, gas, and energy.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | Perc EngineeringStrong evidence | 124 | |||
“PERC Engineering is a full-service engineering & project management firm in the oil & gas energy sector.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 116 | ||||
“Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 115 | ||||
“Bedrock Petroleum Consultants was formed in 2011 with the goal of providing the highest level of quality service to both our consultants and operator clients.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | Ryder Scott Co. L.PIndirect evidence | 109 | |||
“Ryder Scott Company, L.P.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 108 | ||||
“Enertia Software continues to lead the upstream oil and gas industry with integrated enterprise solutions for the upstream oil and gas industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 101 | ||||
“ModuSpec first introduced the concept of rig inspection to the market in 1986 and since then, has been providing unrivalled expertise and assurance to support safe operations…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | Stonebridge ConsultingStrong evidence | 101 | |||
“Stonebridge Consulting provides business advisory and technology services for next-gen oil and gas.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 101 | ||||
“G2 Integrated Solutions is dedicated to meeting the Asset Integrity, Regulatory and Engineering challenges faced by Upstream, Midstream and Downstream energy operators.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | Oliva GibbsIndirect evidence | 92 | |||
“Oliva Gibbs is a nationally recognized law firm with offices in Columbus, OH, Houston, TX, Lafayette, LA, Midland, TX, Oklahoma City, OK, and San Antonio, TX.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 65 | ||||
“BD Energy Systems LLC located in Houston, TX, USA is a world leading engineering company operating in the Petrochemical, Fertilizer, Refining, and Gas Processing industry…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 63 | ||||
“RCP is the regulatory compliance and risk management expert for pipelines, facilities, and terminal operations.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 572 oil and gas consulting firms based in Houston, United States
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Oil and gas consulting firms based in Houston, United States at a glance
As of Sep 5, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 572 companies.
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 oil and gas consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Houston, United States whose own description of what they do matches “oil and gas consulting firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among oil and gas consulting firms, and records with no verified work email. Companies headquartered outside Houston are excluded even when they keep an office there.
- 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 an evidence 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, 17,898 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 5, 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.
Oil and gas consulting firms by metro in the United States
- Oil and gas consulting firms in Houston572
- Oil and gas consulting firms in Denver70
- Oil and gas consulting firms in Midland63
- Oil and gas consulting firms in Dallas52
- Oil and gas consulting firms in Oklahoma City50
- Oil and gas consulting firms in The Woodlands41
- Oil and gas consulting firms in Austin31
- Oil and gas consulting firms in Spring31
- Oil and gas consulting firms in Lafayette30
- Oil and gas consulting firms in Katy29
- Oil and gas consulting firms in Tulsa26
Frequently asked
How many oil and gas consulting firms are there based in Houston, United States?
RevenueBase identified 572 oil and gas consulting firms headquartered in Houston, United States 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 city has the most oil and gas consulting firms?
Houston leads with 572 headquartered companies, followed by Denver (70) and Midland (63).
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 17,898 verified decision-maker contacts tracked across these 572 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 5, 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 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.
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