Company lists · Data refreshed September 2026

Top 25 Reservoir engineering consulting firms based in the United States

Name: Reservoir engineering consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 633 companies tracked

RevenueBase identified 633 reservoir engineering consulting firms headquartered in the United States as of September 2026 and tracks 72,099 professional contacts across them, including 22,926 with verified work emails. Houston is the largest hub.

This list covers reservoir engineering consulting firms headquartered in the 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

633Companies

72,099Contacts tracked

22,926Verified emails

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The 25 largest reservoir engineering consulting firms based in the United States

Ranked by team size

Top 25 of 633 reservoir engineering consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to reservoir engineering consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Halliburton	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	10001+	53,380 contacts →
	Indirect evidence “We collaborate and engineer solutions to maximize asset value for our customers.” Source: RevenueBase Database · checked Sep 29, 2026
2	Terracon	Strong evidence	Olathe, KS, United StatesHQ checked Sep 29, 2026	5,001-10,000	6,113 contacts →
	Strong evidence “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Source: RevenueBase Database · checked Sep 29, 2026
3	Core Laboratories	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	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, 2026
4	Barr Engineering CO	Strong evidence	Minneapolis, MN, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,088 contacts →
	Strong evidence “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Source: RevenueBase Database · checked Sep 29, 2026
5	EDG	Indirect evidence	Metairie, LA, United StatesHQ checked Sep 29, 2026	501-1,000	700 contacts →
	Indirect evidence “EDG Inc.” Source: RevenueBase Database · checked Sep 29, 2026
6	Anchor QEA	Strong evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	501-1,000	479 contacts →
	Strong evidence “Headquartered in Seattle, Washington, Anchor QEA is a nationally recognized environmental science and engineering consulting firm specializing in aquatic, shoreline, and water…” Source: RevenueBase Database · checked Sep 29, 2026
7	Recon Management Services, INC	Strong evidence	Sulphur, LA, United StatesHQ checked Sep 29, 2026	501-1,000	420 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
8	Ardaman & Associates	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 29, 2026	201-500	311 contacts →
	Indirect evidence “Ardaman & Associates, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
9	Degolyer And Macnaughton	Partial evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	201-500	268 contacts →
	Partial evidence “Reserves assessments and appraisals • Prospective resources assessments • Unconventional resources assessments • Contingent resources assessments • Reservoir simulation •…” Source: RevenueBase Database · checked Sep 29, 2026
10	Rock Flow Dynamics	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	263 contacts →
	Indirect evidence “New technologies developed by the research and product development teams of Rock Flow Dynamics are integrated into the company’s flagship product – tNavigator.” Source: RevenueBase Database · checked Sep 29, 2026
11	Intera Incorporated	Strong evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	201-500	259 contacts →
	Strong evidence “Established in 1974, INTERA is a geosciences and engineering consulting firm focused on providing water resources and supply, environmental, mining, radioactive waste isolation…” Source: RevenueBase Database · checked Sep 29, 2026
12	M&h	Partial evidence	Spring, TX, United StatesHQ checked Sep 29, 2026	201-500	253 contacts →
	Partial evidence “For more than 40 years, M&H has been a trusted source for oil & gas consulting services that maximize value for clients.” Source: RevenueBase Database · checked Sep 29, 2026
13	Project Consulting Services	Strong evidence	Metairie, LA, United StatesHQ checked Sep 29, 2026	201-500	185 contacts →
	Strong evidence “Project Consulting Services®, Inc.(PCS) provides consulting and engineering expertise to the energy infrastructure industry.” Source: RevenueBase Database · checked Sep 29, 2026
14	SCI Engineering, INC	Strong evidence	St. Charles, MO, United StatesHQ checked Sep 29, 2026	51-200	174 contacts →
	Strong evidence “SCI Engineering, Inc.(SCI) is a nationwide, multi-discipline professional consulting engineering firm that provides comprehensive services across all phases of project development…” Source: RevenueBase Database · checked Sep 29, 2026
15	Rizzo International	Strong evidence	Pittsburgh, PA, United StatesHQ checked Sep 29, 2026	51-200	165 contacts →
	Strong evidence “RIZZO International, Inc.(RIZZO) is a global engineering and consulting firm headquartered in Pittsburgh, Pennsylvania US.” Source: RevenueBase Database · checked Sep 29, 2026
16	Pelican Energy Consultants, LLC	Strong evidence	Covington, LA, United StatesHQ checked Sep 29, 2026	51-200	148 contacts →
	Strong evidence “Pelican Energy Consultants, LLC is a privately held Consulting Engineering Firm located in Covington, LA.” Source: RevenueBase Database · checked Sep 29, 2026
17	Petrotel	Partial evidence	Plano, TX, United StatesHQ checked Sep 29, 2026	51-200	134 contacts →
	Partial evidence “PetroTel is recognized worldwide as an industry leader in enhanced oil recovery, reservoir characterization and simulation, coalbed methane, production, and exploration…” Source: RevenueBase Database · checked Sep 29, 2026
18	SDS Petroleum Consultants	Indirect evidence	Tyler, TX, United StatesHQ checked Sep 29, 2026	51-200	122 contacts →
	Indirect evidence “Welcome to SDS Petroleum Consultants company page In Scott Stovall founded SDS Petroleum Consultants L.L.C.” Source: RevenueBase Database · checked Sep 29, 2026
19	Ryder Scott Co. L.P	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	109 contacts →
	Indirect evidence “Ryder Scott Company, L.P.” Source: RevenueBase Database · checked Sep 29, 2026
20	Blade Energy Partners	Partial evidence	Frisco, TX, United StatesHQ checked Sep 29, 2026	51-200	103 contacts →
	Partial evidence “Founded in Blade Energy Partners is an independent consulting company known for overcoming the challenges of complex multidisciplinary projects in the oil, gas, and geothermal…” Source: RevenueBase Database · checked Sep 29, 2026
21	Impac Exploration Services	Indirect evidence	Weatherford, OK, United StatesHQ checked Sep 29, 2026	51-200	98 contacts →
	Indirect evidence “Impac Exploration Services, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
22	Plaster & Wald Consulting Corp	Strong evidence	Mustang, OK, United StatesHQ checked Sep 29, 2026	201-500	91 contacts →
	Strong evidence “Plaster & Wald Consulting Corp has provided engineering and consulting services to the oil & gas industry since 1997.Our supervisors provide technical expertise in well planning…” Source: RevenueBase Database · checked Sep 29, 2026
23	K&m Technology Group	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 29, 2026	51-200	85 contacts →
	Indirect evidence “K&M Technology Group was founded in 1988 and has been involved in extended reach and horizontal drilling since its inception.” Source: RevenueBase Database · checked Sep 29, 2026
24	West Consultants, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 29, 2026	51-200	84 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
25	Production Solutions International	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	51-200	82 contacts →
	Indirect evidence “Production Solutions is majority owned and managed by the Mitchell Group in Dallas, Texas.” Source: RevenueBase Database · checked Sep 29, 2026

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: reservoir engineering 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 reservoir engineering consulting firms.
Partial evidence: Its own public description names part of reservoir engineering consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name reservoir engineering 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 633 reservoir engineering consulting firms based in the United States

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Reservoir engineering consulting firms based in the United States at a glance

As of Sep 29, 2026

31.8%Verified-email coverage

113.9Average contacts per company

1-10Median size (employees)

24.3%Largest-city concentration · Houston

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

366

11-50

193

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 633 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 reservoir engineering 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 the United States whose own description of what they do matches “reservoir engineering 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 reservoir engineering 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 reservoir engineering consulting firms, and records with no verified work email. Companies headquartered outside United States 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, 22,926 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.

Reservoir engineering consulting firms by metro

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 reservoir engineering 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 reservoir engineering consulting firms are there based in the United States?

RevenueBase identified 633 reservoir engineering consulting firms headquartered in the 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 reservoir engineering consulting firms?

Houston leads with 154 headquartered companies, followed by Denver (29) and Dallas (19).

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 22,926 verified decision-maker contacts tracked across these 633 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.

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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 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.