Company lists · Data refreshed October 2026

Top 25 Horizontal drilling contractors based in the United States

RevenueBase identified 1,028 company matches for horizontal drilling contractors associated with the United States as of October 2026 and tracks 23,319 professional contacts across them, including 5,995 with verified work emails. Houston is the largest hub.

This list covers company matches for horizontal 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 14, 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 14, 2026 How this list was built
1,028Companies
23,319Contacts tracked
5,995Verified emails
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The 25 largest horizontal drilling contractors based in the United States

Ranked by team size
Top 25 of 1,028 company matches for horizontal drilling contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 14, 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 Oct 14, 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 14, 2026 · View company records in RevenueBase
2Exact matchPhoenix, AZ, United StatesHQ recorded Oct 14, 20265,001-10,0001,376 contacts →

Exact match

“NPL is a nationally recognized leader in energy infrastructure construction, with 50 years of experience.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
3Exact matchThe Woodlands, TX, United StatesHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
4Exact matchKing Of Prussia, PA, United StatesHQ recorded Oct 14, 20261,001-5,000560 contacts →

Exact match

“As one of the nations largest underground specialty contractors, InfraSource has over employees strategically positioned across more than 20 operating centers.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
5Exact matchWestmont, IL, United StatesHQ recorded Oct 14, 2026501-1,000491 contacts →

Exact match

“ENTACT is the partner of choice in solving our customer's most complex environmental remediation and geotechnical infrastructure challenges.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
6Exact matchOklahoma City, OK, United StatesHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Oct 14, 2026501-1,000391 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 · Oct 14, 2026 · View company records in RevenueBase
8Exact matchConyers, GA, United StatesHQ recorded Oct 14, 20261,001-5,000378 contacts →

Exact match

“Since 1996 Southeast Connections, LLC is a contractor specializing in energy infrastructure serving the gas industry.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
9Exact matchEunice, LA, United StatesHQ recorded Oct 14, 20261,001-5,000376 contacts →

Exact match

“Our Mission: To be the premier provider for energy related construction services through a commitment to excellence in safety, production, and quality, with the resolve to…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
10Exact matchWindsor, CO, United StatesHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
11Exact matchTulsa, OK, United StatesHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
12Exact matchKaty, TX, United StatesHQ recorded Oct 14, 20261,001-5,000311 contacts →

Exact match

“Price Gregory International (PGI) specializes in large-diameter pipeline construction for oil, gas, and renewables, with the capacity to manage multiple large-scale projects…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
13Exact matchNew Iberia, LA, United StatesHQ recorded Oct 14, 2026501-1,000297 contacts →

Exact match

“LEAM Drilling Systems, Inc.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
14Exact matchThe Woodlands, TX, United StatesHQ recorded Oct 14, 202651-200291 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
15Exact matchMeridian, MS, United StatesHQ recorded Oct 14, 2026501-1,000288 contacts →

Exact match

“Castle is an Energy Construction contractor based out of MS with additional office locations in TX & LA.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
16Exact matchBothell, WA, United StatesHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
17Exact matchPaso Robles, CA, United StatesHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
18Exact matchConroe, TX, United StatesHQ recorded Oct 14, 2026201-500235 contacts →

Exact match

“ProDirectional was established in 2001 by experienced drilling industry professionals who believed the oil and gas services market was lacking a directional services company that…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
19Exact matchChannelview, TX, United StatesHQ recorded Oct 14, 2026201-500230 contacts →

Exact match

“NorthStar Energy Services provides infrastructure construction and support services to owners and builders of energy, pipeline, chemical, petrochemical, power, renewable energy…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
20Exact matchConroe, TX, United StatesHQ recorded Oct 14, 2026501-1,000221 contacts →

Exact match

“Visit us at MS Directional”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
21Exact matchConroe, TX, United StatesHQ recorded Oct 14, 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 14, 2026 · View company records in RevenueBase
22Exact matchWheat Ridge, CO, United StatesHQ recorded Oct 14, 2026501-1,000169 contacts →

Exact match

“Since 1987, our knowledgeable team has provided gas operations and maintenance services, gas distribution and mainline construction, electric meter services, directional drilling…”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
23Exact matchWaunakee, WI, United StatesHQ recorded Oct 14, 2026501-1,000163 contacts →

Exact match

“With 40 years of experience, InterCon Construction has become a leading energy-related utility contractor.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
24Exact matchGiddings, TX, United StatesHQ recorded Oct 14, 20261,001-5,000160 contacts →

Exact match

“Pumpco Inc, headquartered in Giddings, Texas, excels in pipeline construction.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase
25Exact matchMidland, TX, United StatesHQ recorded Oct 14, 2026501-1,000160 contacts →

Exact match

“SAFETY At Mulholland the safe completion of each job we perform is our number one priority.”

Recorded in the RevenueBase company graph · Oct 14, 2026 · View company records in RevenueBase

Showing 25 of 1,028 horizontal drilling contractors based in the United States

See the full list, filter by size, metro and specialty, and access 5,995 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Horizontal drilling contractors based in the United States at a glance

As of Oct 14, 2026
25.7%Verified-email coverage
22.7Average contacts per company
11-50Median size (employees)
5.2%Largest-city concentration · Houston
Oct 14, 2026Page data refreshed

Companies by employee count

1-10
297
11-50
418
51-200
225
201-500
47
501-1,000
23
1,001-5,000
15
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 1,028 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 “horizontal 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 5,995 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 14, 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 “horizontal drilling contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 1,028 company matches for horizontal 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?

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

Which city has the most horizontal drilling contractors?

Houston leads with 53 company records, followed by Midland (25) and Conroe (15).

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 5,995 professional contacts with verified work emails tracked across these 1,028 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 14, 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.