Company lists · Data refreshed October 2026

Top 25 Industrial drilling contractors based in the United States

RevenueBase identified 1,088 company matches for industrial drilling contractors associated with the United States as of October 2026 and tracks 31,523 professional contacts across them, including 8,058 with verified work emails. Houston is the largest hub.

This list covers company matches for industrial drilling contractors 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 16, 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 16, 2026 How this list was built
1,088Companies
31,523Contacts tracked
8,058Verified emails
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The 25 largest industrial drilling contractors based in the United States

Ranked by team size
Top 25 of 1,088 company matches for industrial drilling contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 16, 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 matchWest Valley City, UT, United StatesHQ recorded Oct 16, 20265,001-10,0003,518 contacts →

Exact match

“Established in 1890, Boart Longyear is the world’s leading innovative provider of drilling services, manufacturer of productivity-driven drilling equipment and performance…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Oct 16, 20265,001-10,0003,263 contacts →

Exact match

“We Are Valaris With decades of expertise and strategic commitment built on efficiency, capability and ingenuity, our sights are continually set toward a future built with purpose…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
3Exact matchBaton Rouge, LA, United StatesHQ recorded Oct 16, 20261,001-5,0002,920 contacts →

Exact match

“We began as a merit shop general industrial contractor back in 1979.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Oct 16, 202610001+2,444 contacts →

Exact match

“Patterson-UTI is a leading provider of drilling and completion services to oil and natural gas exploration and production companies in the United States and other select…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
5Exact matchThe Woodlands, TX, United StatesHQ recorded Oct 16, 20261,001-5,0001,213 contacts →

Exact match

“THE ULTIMATE PARTNER IN WELLBORE PLACEMENT Scientific Drilling International is an independent service provider offering a complete high accuracy wellbore placement and drilling…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Oct 16, 2026501-1,000678 contacts →

Exact match

“Atwood Oceanics, Inc.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
7Exact matchOklahoma City, OK, United StatesHQ recorded Oct 16, 20261,001-5,000458 contacts →

Exact match

“As the largest privately-held domestic land drilling contractor in the United States, Cactus provides competent, motivated personnel utilizing premium equipment to meet and exceed…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Oct 16, 2026201-500345 contacts →

Exact match

“ADA is a global energy services company specializing in advanced drilling solutions for oil, gas, and geothermal applications.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
9Exact matchWindsor, CO, United StatesHQ recorded Oct 16, 202651-200324 contacts →

Exact match

“Total Directional Services, LLC is a privately owned, managed and operated service company headquartered in Windsor, CO.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
10Exact matchTulsa, OK, United StatesHQ recorded Oct 16, 20261,001-5,000318 contacts →

Exact match

“The core philosophies and belief systems, which our company strives to deliver are all designed to keep our country on track to someday be energy independent.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
11Exact matchNew Iberia, LA, United StatesHQ recorded Oct 16, 2026501-1,000297 contacts →

Exact match

“LEAM Drilling Systems, Inc.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
12Exact matchThe Woodlands, TX, United StatesHQ recorded Oct 16, 202651-200291 contacts →

Exact match

“Altitude Energy Partners (AEP) provides trusted expertise in Directional Drilling.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Oct 16, 2026201-500288 contacts →

Exact match

“Strength.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
14Exact matchBothell, WA, United StatesHQ recorded Oct 16, 20261,001-5,000262 contacts →

Exact match

“CASCADE is the leading provider of environmental and geotechnical drilling, site investigation and environmental remediation.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Oct 16, 20261,001-5,000255 contacts →

Exact match

“Founded in 1947, Varel Energy Solutions is one of the world’s largest independent manufacturer and suppliers of downhole drilling and completions products to the energy sector.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
16Exact matchPaso Robles, CA, United StatesHQ recorded Oct 16, 2026201-500240 contacts →

Exact match

“RHC is a full-service renewable and industrial construction contractor, serving the San Joaquin Valley, Central Coast and Permian Basin since 1977.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
17Exact matchBrent, AL, United StatesHQ recorded Oct 16, 2026201-500222 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
18Exact matchConroe, TX, United StatesHQ recorded Oct 16, 2026501-1,000221 contacts →

Exact match

“Visit us at MS Directional”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
19Exact matchConroe, TX, United StatesHQ recorded Oct 16, 2026501-1,000217 contacts →

Exact match

“For more than 30 years, MS Directional, a Patterson-UTI company, has led the way in directional drilling services across North America.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Oct 16, 202610001+182 contacts →

Exact match

“From its founding in 1960, Grant Prideco has become the world's technology leader for drill pipe and drill stem accessories.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
21Exact matchClarkston, MI, United StatesHQ recorded Oct 16, 20261,001-5,000181 contacts →

Exact match

“For 80 years, Oscar W.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
22Exact matchAuburn, NH, United StatesHQ recorded Oct 16, 2026201-500172 contacts →

Exact match

“Maine Drilling & Blasting is all about making it happen.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
23Exact matchTomball, TX, United StatesHQ recorded Oct 16, 2026201-500155 contacts →

Exact match

“Windlass manufactures, supplies and supports a wide range of API certified drilling equipment.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
24Exact matchGillette, WY, United StatesHQ recorded Oct 16, 2026501-1,000152 contacts →

Exact match

“Cyclone Drilling Inc is an Oil and Gas Drilling Contractor in the Rocky Mountain Region.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
25Exact matchElko, NV, United StatesHQ recorded Oct 16, 2026201-500151 contacts →

Exact match

“National provides mining companies primarily working in the Western United States with the safest, most competitive drilling services in the industry.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase

Showing 25 of 1,088 industrial drilling contractors based in the United States

See the full list, filter by size, metro and specialty, and access 8,058 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Industrial drilling contractors based in the United States at a glance

As of Oct 16, 2026
25.6%Verified-email coverage
29.0Average contacts per company
11-50Median size (employees)
9.0%Largest-city concentration · Houston
Oct 16, 2026Page data refreshed

Companies by employee count

1-10
381
11-50
458
51-200
181
201-500
33
501-1,000
14
1,001-5,000
14
5,001-10,000
3
10001+
2

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 1,088 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 “industrial drilling contractors” 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 8,058 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 16, 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.

Industrial drilling contractors 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 “industrial drilling contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial drilling contractors are there based in the United States?

RevenueBase identified 1,088 company matches for industrial drilling contractors 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?

Boart Longyear tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most industrial drilling contractors?

Houston leads with 98 company records, followed by Midland (21) and Oklahoma City (17).

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 8,058 professional contacts with verified work emails tracked across these 1,088 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 16, 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.