Company lists · Data refreshed September 2026
Top 25 Oil and gas consulting firms based in Denver, United States
RevenueBase identified 70 oil and gas consulting firms headquartered in Denver, United States as of September 2026 and tracks 401 professional contacts across them, including 117 with verified work emails. Houston is the largest hub.
This list covers oil and gas consulting firms headquartered in Denver, 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 Denver, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 94 | ||||
“As of January 1, 2017, Petroleum Field Services is rebranded as Ascent Geomatics Solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | TCO Land & RegulatoryIndirect evidence | 42 | |||
“TCO Land & Regulatory has been advancing the energy sector as a trusted partner for nearly 70 years, offering exceptional land services, project management, and energy compliance.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | Quandary ConsultantsPartial evidence | 40 | |||
“Quandary Consultants, LLC (QC) is an environmental and regulatory consulting company.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 15 | ||||
“The environment and sustainability are key considerations across the mining, energy and resources sectors.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | Progressive ConsultingStrong evidence | 11 | |||
“A Consulting Firm that has been in business since 1996, we are a team of oil and gas regulatory and production reporting consultants that have expertise in Local, State, and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | Velocity InsightPartial evidence | 10 | |||
“Velocity Insight is a full-stack, full-function data management and analytics consulting firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 7 | ||||
“AQYRE Energy provides high level energy consulting with a core focus on oil & gas acquisitions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | Vanoco ConsultingIndirect evidence | 7 | |||
“Vanoco has locations in both Denver and Calgary.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 5 | ||||
“Rockwood is a leading provider of environmental solution services specifically catering to the oil and gas industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | Orbis Engineering, INCIndirect evidence | 5 | |||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 4 | ||||
“With over 50 years of combined in-house Corporate Land experience, both on the operations side and administration side, at two of the most prominent and successful E&P Operators…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | X-Treme Measures Consulting, LLCStrong evidence | 4 | |||
“X-Treme Measures Consulting provides a wide range of gas and liquid measurement consulting services related to the Oil & Gas Industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | The Dahill GroupStrong evidence | 4 | |||
“THE DAHILL GROUP - Houston | Denver | Wyoming - Executive Oil and Gas Recruiting, Executive Search and Consulting Firm The Dahill Group is a professional executive recruiting…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | Seventh Sense Engineering ConsultingStrong evidence | 4 | |||
“Oil and Gas Consulting Firm - Frac Consultants - Engineering Consultants SSE Consulting provides total well site operations management.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | Lago Petroleum ConsultingStrong evidence | 4 | |||
“Lago Petroleum Consulting, based in Denver, Colorado, is a small, but growing geological and geophysical consulting firm, serving the upstream oil & gas industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 | ||||
“EES is a full-service consulting firm comprised of a team of engineers and industry professionals specializing in consulting, project management, and field supervision for the oil…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | James C Karo AssociatesStrong evidence | 3 | |||
“Oil and Gas Land Services providing exploration and production companies with a full spectrum of land related actvities including: Permitting, Leasing, Surface Use Agreements…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | High Country Energy SearchStrong evidence | 3 | |||
“High Country Energy Search has been serving the Oil and Gas industry since 2006.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 | ||||
“PETROMAN ENERGY has extensive experience in recruiting and selecting highly qualified engineers, operators and executive level positions in the Oil and Gas Industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | Indzone Consulting LLCIndirect evidence | 2 | |||
“We believe energy is crucial to society.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 | ||||
“1776 Design, LLC is a Colorado-based oil and gas consulting company specializing in 3D piping design, 2D drafting services, on-site construction support, skid design, and asset…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | Petroleum Evaluations GroupStrong evidence | 2 | |||
“Petroleum Evaluations Group provides technically robust, fair market valuations of oil and gas properties.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | Integrated Energy ResourcesIndirect evidence | 1 | |||
“Integrated Energy Resources (IER) manages assessments and operations for clients and private projects.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | Megannum, INCIndirect evidence | 1 | |||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | Hill Program Managers LLCStrong evidence | 1 | |||
“Specializing in oil and gas services providers, architects and engineers, construction and design contractors and business consultants; Denver-based Hill Program Managers, a…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 70 oil and gas consulting firms based in Denver, United States
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Oil and gas consulting firms based in Denver, 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 Denver, over 70 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 Denver, 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 Denver 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, 117 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 Denver, United States?
RevenueBase identified 70 oil and gas consulting firms headquartered in Denver, 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?
Petroleum Field Services, LLC, headquartered in Denver, 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 117 verified decision-maker contacts tracked across these 70 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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