Company lists · Data refreshed September 2026

Top 25 Reservoir engineering consultants based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 699 companies tracked

RevenueBase identified 699 reservoir engineering consultants headquartered in the United States as of September 2026 and tracks 69,300 professional contacts across them, including 19,887 with verified work emails. Houston is the largest hub.

This list covers reservoir engineering consultants 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 17, 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 17, 2026 86% judged on-target in blind review

699Companies

69,300Contacts tracked

19,887Verified emails

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The 25 largest reservoir engineering consultants based in the United States

Ranked by team size

Top 25 of 699 reservoir engineering consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to reservoir engineering consultants: 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 17, 2026	10001+	53,380 contacts →
	Indirect evidence “We collaborate and engineer solutions to maximize asset value for our customers.” Source: RevenueBase Database · checked Sep 17, 2026
2	KEY Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
3	Core Laboratories	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 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 17, 2026
4	Knight Piesold	Indirect evidence	Denver, CO, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,231 contacts →
	Indirect evidence “Knight Piésold is an employee-owned, global consulting firm providing specialist services to the mining, power, water resources, and infrastructure industries.” Source: RevenueBase Database · checked Sep 17, 2026
5	Nine Energy Service	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	712 contacts →
	Indirect evidence “With a culture built on high performance and flawless execution, Nine Energy Service is a unique kind of oilfield services company, offering industry-shaping completion solutions…” Source: RevenueBase Database · checked Sep 17, 2026
6	Degolyer And Macnaughton	Partial evidence	Dallas, TX, United StatesHQ checked Sep 17, 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 17, 2026
7	Rock Flow Dynamics	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 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 17, 2026
8	Intera Incorporated	Partial evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	201-500	259 contacts →
	Partial 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 17, 2026
9	M&h	Indirect evidence	Spring, TX, United StatesHQ checked Sep 17, 2026	201-500	253 contacts →
	Indirect 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 17, 2026
10	Utilicast	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 17, 2026	201-500	181 contacts →
	Indirect evidence “Utilicast is more than just a consulting company.” Source: RevenueBase Database · checked Sep 17, 2026
11	Reservoir Group	Partial evidence	Stafford, TX, United StatesHQ checked Sep 17, 2026	201-500	178 contacts →
	Partial evidence “Reservoir Group is a world-class niche oilfield services company that has been addressing customer challenges for more than 70 years.” Source: RevenueBase Database · checked Sep 17, 2026
12	Petrotel	Partial evidence	Plano, TX, United StatesHQ checked Sep 17, 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 17, 2026
13	SDS Petroleum Consultants	Partial evidence	Tyler, TX, United StatesHQ checked Sep 17, 2026	51-200	122 contacts →
	Partial evidence “Welcome to SDS Petroleum Consultants company page In Scott Stovall founded SDS Petroleum Consultants L.L.C.” Source: RevenueBase Database · checked Sep 17, 2026
14	Halker	Partial evidence	Centennial, CO, United StatesHQ checked Sep 17, 2026	51-200	121 contacts →
	Partial evidence “Halker Consulting provides custom engineered and configured services in Project Assessment and Planning, Engineering and Design, & Consulting and Implementation Guidance.” Source: RevenueBase Database · checked Sep 17, 2026
15	Geosoftware	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	115 contacts →
	Indirect evidence “GeoSoftware is the global trusted partner for subsurface geoscience software and consulting services.” Source: RevenueBase Database · checked Sep 17, 2026
16	Bedrock	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	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 17, 2026
17	Ryder Scott Co. L.P	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	109 contacts →
	Indirect evidence “Ryder Scott Company, L.P.” Source: RevenueBase Database · checked Sep 17, 2026
18	Enertia Software	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	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 17, 2026
19	Blade Energy Partners	Indirect evidence	Frisco, TX, United StatesHQ checked Sep 17, 2026	51-200	103 contacts →
	Indirect 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 17, 2026
20	Stonebridge Consulting	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	101 contacts →
	Indirect evidence “Stonebridge Consulting provides business advisory and technology services for next-gen oil and gas.” Source: RevenueBase Database · checked Sep 17, 2026
21	Impac Exploration Services	Indirect evidence	Weatherford, OK, United StatesHQ checked Sep 17, 2026	51-200	98 contacts →
	Indirect evidence “Impac Exploration Services, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
22	Rwdy INC	Indirect evidence	Bossier City, LA, United StatesHQ checked Sep 17, 2026	501-1,000	95 contacts →
	Indirect evidence “At RWDY, we're here to make a difference in the energy sector.” Source: RevenueBase Database · checked Sep 17, 2026
23	Plaster & Wald Consulting Corp	Partial evidence	Mustang, OK, United StatesHQ checked Sep 17, 2026	201-500	91 contacts →
	Partial 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 17, 2026
24	K&m Technology Group	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 17, 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 17, 2026
25	Production Solutions International	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 17, 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 17, 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 consultants. 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 consultants.
Partial evidence: Its own public description names part of reservoir engineering consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name reservoir engineering consultants. 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 699 reservoir engineering consultants based in the United States

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Reservoir engineering consultants based in the United States at a glance

As of Sep 17, 2026

28.7%Verified-email coverage

99.1Average contacts per company

1-10Median size (employees)

31.6%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

416

11-50

193

51-200

201-500

501-1,000

1,001-5,000

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 699 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 consultants, 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 consultants”. 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 consultants), 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 consultants, 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, 19,887 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 17, 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 consultants by metro

Reservoir engineering consultants in Houston221
Reservoir engineering consultants in Denver35

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 consultants, 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 consultants are there based in the United States?

RevenueBase identified 699 reservoir engineering consultants 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 consultants?

Houston leads with 221 headquartered companies, followed by Denver (35) and Dallas (23).

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 19,887 verified decision-maker contacts tracked across these 699 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 17, 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.