Company lists · Data refreshed September 2026

Top 25 Well drilling contractors based in the United States

RevenueBase identified 603 company matches for well drilling contractors associated with the United States as of September 2026 and tracks 7,335 professional contacts across them, including 1,326 with verified work emails. Houston is the largest hub.

This list covers company matches for well 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 September 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 Sep 19, 2026 How this list was built
603Companies
7,335Contacts tracked
1,326Verified emails
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The 25 largest well drilling contractors based in the United States

Ranked by team size
Top 25 of 603 company matches for well drilling contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 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 matchHouston, TX, United StatesHQ recorded Sep 19, 202610001+2,317 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 · Sep 19, 2026 · View company records in RevenueBase
2Exact matchOklahoma City, OK, United StatesHQ recorded Sep 19, 20261,001-5,000440 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 · Sep 19, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Sep 19, 2026501-1,000379 contacts →

Exact match

“Express Energy Services, a leading oilfield services company, is active in every major hydrocarbon basin in the United States and is a premier provider of products and services…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchNew Iberia, LA, United StatesHQ recorded Sep 19, 2026501-1,000291 contacts →

Exact match

“LEAM Drilling Systems, Inc.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchMustang, OK, United StatesHQ recorded Sep 19, 2026201-50091 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 · Sep 19, 2026 · View company records in RevenueBase
6Exact matchLittle Falls, MN, United StatesHQ recorded Sep 19, 202651-20083 contacts →

Exact match

“Hole Products is a leading manufacturer and supplier of high performance drilling supplies, tools and equipment to the construction, direct push, environmental, geotechnical…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchElko, NV, United StatesHQ recorded Sep 19, 2026201-50077 contacts →

Exact match

“With more than 7.4 million feet drilled in the past seven years, Timberline Drilling has a proven track records in safety and production.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchWillis, TX, United StatesHQ recorded Sep 19, 2026201-50056 contacts →

Exact match

“Authentic relationships are standard practice at Weisinger Incorporated.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchBakersfield, CA, United StatesHQ recorded Sep 19, 2026201-50051 contacts →

Exact match

“MMI is a local company for more than 40 years.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchIndianapolis, IN, United StatesHQ recorded Sep 19, 202611-5042 contacts →

Exact match

“Mobile Drill Intl manufactures a full line of drill rigs and tooling servicing the Geotechnical, Environmental, Mineral Exploration, Water Well and Seismic industries.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchOakdale, CA, United StatesHQ recorded Sep 19, 2026201-50032 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchSomerset, PA, United StatesHQ recorded Sep 19, 202611-5031 contacts →

Exact match

“Keystone Drill Services pairs over a century of drilling experience with a diverse supplier network to resolve drill-related issues with unprecedented efficiency.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Sep 19, 202611-5031 contacts →

Exact match

“At Universal Fluid Services we combine unmatched drilling experience with our unique ability to fully understand customer needs, resulting in consistently better drilling outcomes.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchSan Angelo, TX, United StatesHQ recorded Sep 19, 202651-20030 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchButte, MT, United StatesHQ recorded Sep 19, 202611-5029 contacts →

Exact match

“Company Profile AK Drilling is a global leader in exploration and drilling services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchWoodbury Heights, NJ, United StatesHQ recorded Sep 19, 202651-20025 contacts →

Exact match

“A.C.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchJessup, PA, United StatesHQ recorded Sep 19, 202611-5025 contacts →

Exact match

“Since 1967 N&N Drilling Supply has accommodated the needs of a growing worldwide market for drilling supplies and equipment.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchAtlanta, GA, United StatesHQ recorded Sep 19, 202651-20024 contacts →

Exact match

“Betts is a drilling services contractor that has been an industry leading provider of drilling solutions since 1993.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchColumbia, MS, United StatesHQ recorded Sep 19, 202651-20024 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchBroussard, LA, United StatesHQ recorded Sep 19, 202651-20024 contacts →

Exact match

“Since 2003, Downhole Drilling Services, LLC has been a driving force in the horizontal/directional drilling industry.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchSignal Hill, CA, United StatesHQ recorded Sep 19, 202651-20023 contacts →

Exact match

“Environmental and geotechnical drilling company with two offices based out of Signal Hill (Los Angeles), CA, Bloomington (San Bernardino), CA and Las Vegas, NV.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchBrownsburg, IN, United StatesHQ recorded Sep 19, 202611-5021 contacts →

Exact match

“C&J Well Company is Central Indiana's premier drilling and full service well contractor company.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchPinedale, WY, United StatesHQ recorded Sep 19, 202651-20021 contacts →

Exact match

“When your company needs oil and gas exploration, geothermal, disposal, water wells, caisson, pier or conductor/rat/mouse holes, using top of the line, well maintained equipment…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchWest Palm Beach, FL, United StatesHQ recorded Sep 19, 202651-20020 contacts →

Exact match

“Florida Drilling is a licensed water well and general contractor and leading provider of water well drilling and water resource construction services located in West Palm Beach…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchWaupun, WI, United StatesHQ recorded Sep 19, 202611-5018 contacts →

Exact match

“General Contractor specializing in Well Drilling, Well Rehabilitation, Pump Installation & Repair, and Controls for municipal, industrial & recreational clients throughout the…”

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

Showing 25 of 603 well drilling contractors based in the United States

See the full list, filter by size, metro and specialty, and access 1,326 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Well drilling contractors based in the United States at a glance

As of Sep 19, 2026
18.1%Verified-email coverage
12.2Average contacts per company
1-10Median size (employees)
1.8%Largest-city concentration · Houston
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
312
11-50
229
51-200
40
201-500
10
501-1,000
4
1,001-5,000
3
5,001-10,000
1
10001+
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 603 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 “well 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 1,326 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 September 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.

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

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

RevenueBase identified 603 company matches for well drilling contractors associated with the United States as of September 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?

Patterson-Uti tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most well drilling contractors?

Houston leads with 11 company records, followed by Midland (11) and Bakersfield (5).

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 1,326 professional contacts with verified work emails tracked across these 603 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 September 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.