Company lists · Data refreshed October 2026

Top 25 Oil and gas due diligence consultants based in the United States

RevenueBase identified 355 company matches for oil and gas due diligence consultants associated with the United States as of October 2026 and tracks 3,806 professional contacts across them, including 678 with verified work emails. Houston is the largest hub.

This list covers company matches for oil and gas due diligence consultants associated with the 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 October 19, 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 Oct 19, 2026 How this list was built
355Companies
3,806Contacts tracked
678Verified emails
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The 25 largest oil and gas due diligence consultants based in the United States

Ranked by team size
Top 25 of 355 company matches for oil and gas due diligence consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSpring, TX, United StatesHQ recorded Oct 19, 2026201-500275 contacts →

Exact match

“For more than 40 years, M&H has been a trusted source for oil & gas consulting services that maximize value for clients.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact matchPlano, TX, United StatesHQ recorded Oct 19, 202651-200129 contacts →

Exact match

“PetroTel is recognized worldwide as an industry leader in enhanced oil recovery, reservoir characterization and simulation, coalbed methane, production, and exploration…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchTyler, TX, United StatesHQ recorded Oct 19, 202651-200126 contacts →

Exact match

“Welcome to SDS Petroleum Consultants company page In Scott Stovall founded SDS Petroleum Consultants L.L.C.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Oct 19, 2026501-1,000117 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Oct 19, 202651-200115 contacts →

Exact match

“Ryder Scott Company, L.P.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6Exact matchMustang, OK, United StatesHQ recorded Oct 19, 2026201-50086 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchLafayette, LA, United StatesHQ recorded Oct 19, 202611-5073 contacts →

Exact match

“March 21, 2023, marked an important milestone for Stokes & Spiehler.a half century serving the oil & gas industry!”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchMoorestown, NJ, United StatesHQ recorded Oct 19, 202651-20066 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchAustin, TX, United StatesHQ recorded Oct 19, 202651-20055 contacts →

Exact match

“Petroleum Engineering & Energy Advisors - With the Lonquist team, you have access to some of the most experienced and skilled professionals in the business.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Oct 19, 2026201-50039 contacts →

Exact match

“Cinco Energy Management Group is the Authority in North American Land Management.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchOklahoma City, OK, United StatesHQ recorded Oct 19, 202651-20035 contacts →

Exact match

“Basin Engineering is an energy engineering and operations consulting firm specializing in drilling, completion and production operations and petroleum engineering specialties.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12Exact matchAustin, TX, United StatesHQ recorded Oct 19, 202611-5033 contacts →

Exact match

“Since 1961, CG & A has been providing reliable and accurate reserves and economics evaluations to the oil and gas industry throughout the world.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact matchShreveport, LA, United StatesHQ recorded Oct 19, 202651-20027 contacts →

Exact match

“Bear Creek Engineering connects experienced and reliable engineers and consultants with the oil and gas companies that need them most.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14Exact matchAnchorage, AK, United StatesHQ recorded Oct 19, 202651-20023 contacts →

Exact match

“PRA is an integrated oil and gas consulting firm, committed to providing the highest quality professional consultants to the Alaskan oil and gas community.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Oct 19, 202611-5018 contacts →

Exact match

“ODSI is a consulting company to the oil and gas industry.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchBrentwood, TN, United StatesHQ recorded Oct 19, 202611-5018 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Oct 19, 202611-5017 contacts →

Exact match

“TASK FRONTERRA is a leading international and independent provider of high-end GEOSCIENCE and ENGINEERING SERVICES, offering exploration, appraisal and developmental services for…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchMidland, TX, United StatesHQ recorded Oct 19, 20261-1017 contacts →

Exact match

“H&J Petroleum Management & Consulting, LP was formed in January 2015 with a goal of becoming recognized as an industry leader in upstream project management, technical expertise…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchThe Woodlands, TX, United StatesHQ recorded Oct 19, 202651-20016 contacts →

Exact match

“Martin ICS specializes in preconstruction, construction, consulting and management services for oil and gas companies.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20Exact matchThe Woodlands, TX, United StatesHQ recorded Oct 19, 202611-5016 contacts →

Exact match

“EnTech provides to the Oil & Gas Industry compliance assistance, permitting / modeling support, emission database support, Greenhouse Gas (GHG) reporting / monitoring, thermal…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact matchAmarillo, TX, United StatesHQ recorded Oct 19, 202611-5016 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Oct 19, 202611-5016 contacts →

Exact match

“Recognized throughout the oil and gas industry for consulting expertise in materials, fabrication, and engineering, Microalloying focuses on critical pipelines, both onshore and…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchDallas, TX, United StatesHQ recorded Oct 19, 202611-5015 contacts →

Exact match

“Downstream Advisors is a professional consulting firm specialized in the technical, commercial and financial aspects of the downstream petroleum industries – refining, marketing…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact matchHouston, TX, United StatesHQ recorded Oct 19, 20261-1014 contacts →

Exact match

“Entra Consulting assists clients in devising strategies to succeed in today's complicated and highly regulated oil and gas industry by understanding the legal framework, analyzing…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Oct 19, 202611-5014 contacts →

Exact match

“Miller and Lents is a leading international oil and gas consulting firm offering services and expertise in virtually all phases of the upstream petroleum industry.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 25 of 355 oil and gas due diligence consultants based in the United States

See the full list, filter by size, metro and specialty, and access 678 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas due diligence consultants based in the United States at a glance

As of Oct 19, 2026
17.8%Verified-email coverage
10.7Average contacts per company
1-10Median size (employees)
28.5%Largest-city concentration · Houston
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
235
11-50
86
51-200
27
201-500
4
501-1,000
2
1,001-5,000
1

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 355 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 the United States whose business descriptions match “oil and gas due diligence consultants” 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 678 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 October 19, 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 due diligence consultants by metro

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 due diligence consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas due diligence consultants are there based in the United States?

RevenueBase identified 355 company matches for oil and gas due diligence consultants associated with the United States as of October 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?

M&h tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most oil and gas due diligence consultants?

Houston leads with 101 company records, followed by Denver (19) and Dallas (13).

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 678 professional contacts with verified work emails tracked across these 355 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 October 19, 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.