Company lists · Data refreshed November 2026

Top 20 Oil and gas environmental services based in Denver, United States

Name: Oil and gas environmental services based in Denver, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 4, 2026 78 companies tracked

RevenueBase identified 78 company matches for oil and gas environmental services associated with Denver, United States as of November 2026 and tracks 1,546 professional contacts across them, including 476 with verified work emails. Across the United States, Houston is the largest hub for this category (503 companies); Denver has 78.

This list covers company matches for oil and gas environmental services associated with Denver, 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 November 4, 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 Nov 4, 2026 How this list was built

78Companies

1,546Contacts tracked

476Verified emails

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The 20 largest oil and gas environmental services based in Denver, United States

Ranked by team size

Top 20 of 78 company matches for oil and gas environmental services based in Denver, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 4, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Petroleum Field Services, LLC	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	51-200	102 contacts →
	Exact match “As of January 1, 2017, Petroleum Field Services is rebranded as Ascent Geomatics Solutions.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
2	Ayuda Companies	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	51-200	48 contacts →
	Exact match “Established in 2002, Ayuda has successfully performed $300M+ in government and commercial contracts.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
3	Quandary Consultants	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	51-200	46 contacts →
	Exact match “Quandary Consultants, LLC (QC) is an environmental and regulatory consulting company.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
4	Concord Energy LLC	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	51-200	45 contacts →
	Exact match “Concord Energy is a leader in best-in-class energy services and solutions.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
5	Enservco Corporation	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	201-500	21 contacts →
	Exact match “Enservco Corporation provides a variety of well-site services to the domestic on-shore oil and gas industry.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
6	Solum Consulting Group	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	1-10	17 contacts →
	Exact match “The environment and sustainability are key considerations across the mining, energy and resources sectors.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
7	Siegel OIL Company	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	51-200	16 contacts →
	Exact match “Oil & gas Distributor and used oil lab” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
8	Progressive Consulting	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	11-50	12 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
9	Environmental Technical Solutions, LLC	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	1-10	12 contacts →
	Exact match “ETS provides a dynamic team of experts needed to support a wide range of environmental services.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
10	Soli Technical, LLC	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	1-10	7 contacts →
	Exact match “Soli brings decades of environmental and engineering experience to solve your problems in a cost effective, practical, and timely manner.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
11	Fielding Hill, LLC	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	1-10	7 contacts →
	Exact match “Navigating Energy Regulations with Expertise - At Fielding Hill, we specialize in guiding energy sector clients through the complexities of regulatory, environmental, and…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
12	Aqyre Energy	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	51-200	7 contacts →
	Exact match “AQYRE Energy provides high level energy consulting with a core focus on oil & gas acquisitions.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
13	Palmetto Environmental Group	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	11-50	6 contacts →
	Exact match “Palmetto was founded in Denver, Colorado in 2003 and since that time has completed projects across the United States.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
14	Rocky Mountain Industrial Services, LLC	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	11-50	6 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
15	Orbis Engineering, INC	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	51-200	5 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
16	Rockwood LLC	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	1-10	4 contacts →
	Exact match “Rockwood is a leading provider of environmental solution services specifically catering to the oil and gas industry.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
17	EES Resources LLC	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	1-10	4 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
18	Seventh Sense Engineering Consulting	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	11-50	4 contacts →
	Exact match “Oil and Gas Consulting Firm - Frac Consultants - Engineering Consultants SSE Consulting provides total well site operations management.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
19	Lago Petroleum Consulting	Exact match	Denver, United StatesHQ recorded Nov 4, 2026	1-10	4 contacts →
	Exact match “Lago Petroleum Consulting, based in Denver, Colorado, is a small, but growing geological and geophysical consulting firm, serving the upstream oil & gas industry.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
20	James C Karo Associates	Exact match	Denver, CO, United StatesHQ recorded Nov 4, 2026	11-50	3 contacts →
	Exact match “Oil and Gas Land Services providing exploration and production companies with a full spectrum of land related actvities including: Permitting, Leasing, Surface Use Agreements…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “oil and gas environmental services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 20 of 78 oil and gas environmental services based in Denver, United States

See the full list, filter by size, metro and specialty, and access 476 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas environmental services based in Denver, United States at a glance

As of Nov 4, 2026

30.8%Verified-email coverage

19.8Average contacts per company

1-10Median size (employees)

Nov 4, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Denver, so it is reported there. Company counts and contact totals on this page are exact for Denver, over 78 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 Denver, United States whose business descriptions match “oil and gas environmental services” 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 476 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 November 4, 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.

Oil and gas environmental services by metro in the United States

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 and gas environmental services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas environmental services are there based in Denver, United States?

RevenueBase identified 78 company matches for oil and gas environmental services associated with Denver, United States as of November 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?

Petroleum Field Services, LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most oil and gas environmental services?

Houston leads the United States with 503 company records, followed by Midland (163) and Denver (78).

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 476 professional contacts with verified work emails tracked across these 78 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 November 4, 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.