Company lists · Data refreshed September 2026
Top 25 Petroleum consulting firms based in Houston, United States
RevenueBase identified 379 petroleum consulting firms headquartered in Houston, United States as of September 2026 and tracks 99,002 professional contacts across them, including 29,028 with verified work emails. Across the United States, Houston is the largest hub for this category.
This list covers petroleum 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
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.
The 25 largest petroleum consulting firms based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 53,380 contacts → | ||||
Indirect evidence “We collaborate and engineer solutions to maximize asset value for our customers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 29,577 contacts → | ||||
Indirect evidence “NOV delivers technology-driven solutions to empower the global energy industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,755 contacts → | ||||
Indirect evidence “Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,775 contacts → | ||||
Indirect evidence “TGS provides advanced data and intelligence to companies active in the energy sector.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,500 contacts → | ||||
Indirect evidence “With over 70 offices in more than 50 countries located in major oil-producing provinces, Core Laboratories provides services to the world's major, national, and independent oil…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,262 contacts → | ||||
Indirect evidence “FET (Forum Energy Technologies, Inc.) is a global company, serving the crude oil, natural gas, and renewable energy industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,046 contacts → | ||||
Indirect evidence “At Gulf Companies, we are driven by our mission to serve a vital role in the global energy industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 424 contacts → | ||||
Indirect evidence “EnerVest is a top-tier, low-cost oil and natural gas operating company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 415 contacts → | ||||
Indirect evidence “In 2019, Stratum Reservoir, formerly Weatherford Laboratories, became an independent and dynamic organization.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 285 contacts → | ||||
Indirect evidence “Greene’s Energy Group offers a range of support services and products to the oil and gas industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 124 contacts → | ||||
Indirect evidence “PERC Engineering is a full-service engineering & project management firm in the oil & gas energy sector.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 116 contacts → | ||||
Indirect evidence “Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 115 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 109 contacts → | ||||
Indirect evidence “Ryder Scott Company, L.P.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 108 contacts → | ||||
Indirect evidence “Enertia Software continues to lead the upstream oil and gas industry with integrated enterprise solutions for the upstream oil and gas industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 101 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 101 contacts → | ||||
Partial evidence “Stonebridge Consulting provides business advisory and technology services for next-gen oil and gas.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 101 contacts → | ||||
Indirect evidence “G2 Integrated Solutions is dedicated to meeting the Asset Integrity, Regulatory and Engineering challenges faced by Upstream, Midstream and Downstream energy operators.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 97 contacts → | ||||
Indirect evidence “RCI Energy Group provides a wide range of project support services to the energy industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 76 contacts → | ||||
Indirect evidence “Strategy Engineering is a privately-owned technical services company located within the Energy Corridor in Houston, TX.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 63 contacts → | ||||
Indirect evidence “RCP is the regulatory compliance and risk management expert for pipelines, facilities, and terminal operations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 60 contacts → | ||||
Indirect evidence “F&C Engineers provides full services from concept to start up for the oil and gas upstream, midstream, and turbomachinery industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 49 contacts → | ||||
Indirect evidence “The Industry Challenge: Subsurface decisions are increasingly complex, high-stakes, and time-constrained.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 47 contacts → | ||||
Indirect evidence “Riner Engineering became part of the UES family of companies in June 2023, combining our local expertise with UES’s nationwide presence and resources.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 43 contacts → | ||||
Indirect evidence “Lighthouse Midstream provides a comprehensive array of services and guidance for our oil & gas partners from strategy to execution.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: petroleum 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 petroleum consulting firms.
- Partial evidence
- Its own public description names part of petroleum consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name petroleum 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 379 petroleum consulting firms based in Houston, United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 29,028 reachable decision-makers.
Free signup · no credit card
Petroleum consulting firms based in Houston, United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 379 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 petroleum 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.
- What qualifies
- Companies headquartered in Houston, United States whose own description of what they do matches “petroleum 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 petroleum 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 petroleum 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 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, 29,028 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 29, 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.
Petroleum consulting firms by metro in the United States
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 petroleum 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 petroleum consulting firms are there based in Houston, United States?
RevenueBase identified 379 petroleum 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 in the United States has the most petroleum consulting firms?
Houston leads the United States with 379 headquartered companies, followed by Denver (46) and Dallas (37).
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 29,028 verified decision-maker contacts tracked across these 379 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 379 petroleum consulting firms based in Houston, United States. Start with a free account, no credit card.
Download this list →Related lists
Petroleum consulting firms by geography
- Petroleum consulting firms based in Perth, Australia
- Petroleum consulting firms based in Belo Horizonte, Brazil
- Petroleum consulting firms based in Rio De Janeiro, Brazil
- Petroleum consulting firms based in Calgary, Canada
- Petroleum consulting firms based in Kuala Lumpur, Malaysia
- Petroleum consulting firms based in Singapore, Singapore
- Petroleum consulting firms based in Abu Dhabi, United Arab Emirates
- Petroleum consulting firms based in Dubai, United Arab Emirates
- Petroleum consulting firms based in Aberdeen, United Kingdom
- Petroleum consulting firms based in London, United Kingdom
- Petroleum consulting firms based in Dallas, United States
- Petroleum consulting firms based in Denver, United States
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Petroleum consulting firms based in Perth, Australia
- Petroleum consulting firms based in Belo Horizonte, Brazil
- Petroleum consulting firms based in Rio De Janeiro, Brazil
- Petroleum consulting firms based in Calgary, Canada
- Petroleum consulting firms based in Kuala Lumpur, Malaysia
- Petroleum consulting firms based in Singapore, Singapore