Company lists · Data refreshed September 2026

Top 25 Dth drilling rig manufacturers based in the United States

Name: Dth drilling rig manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 351 companies tracked

RevenueBase identified 351 dth drilling rig manufacturers headquartered in the United States as of September 2026 and tracks 11,025 professional contacts across them, including 2,716 with verified work emails. Houston is the largest hub.

This list covers dth drilling rig manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review

351Companies

11,025Contacts tracked

2,716Verified emails

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The 25 largest dth drilling rig manufacturers based in the United States

Ranked by team size

Top 25 of 351 dth drilling rig manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to dth drilling rig manufacturers: 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	Boart Longyear	Strong evidence	West Valley City, UT, United StatesHQ checked Sep 30, 2026	5,001-10,000	3,285 contacts →
	Strong evidence “Established in 1890, Boart Longyear is the world’s leading innovative provider of drilling services, manufacturer of productivity-driven drilling equipment and performance…” Source: RevenueBase Database · checked Sep 30, 2026
2	Stewart & Stevenson	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,135 contacts →
	Partial evidence “Stewart & Stevenson is a leading designer, manufacturer and provider of specialized equipment and aftermarket parts and service for the oil and gas and other industries that we…” Source: RevenueBase Database · checked Sep 30, 2026
3	Canrig Drilling Technology LTD	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	608 contacts →
	Strong evidence “Canrig® is a global supplier of rig technology used to enable safe, efficient and responsible drilling operations.” Source: RevenueBase Database · checked Sep 30, 2026
4	Ulterra Drilling Technologies L.P	Partial evidence	Fort Worth, TX, United StatesHQ checked Sep 30, 2026	501-1,000	535 contacts →
	Partial evidence “Ulterra is a forward-thinking drilling partner whose purpose is to empower people to advance the oil field.” Source: RevenueBase Database · checked Sep 30, 2026
5	Cactus Drilling CO	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 30, 2026	1,001-5,000	440 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
6	Total Directional Services, LLC	Indirect evidence	Windsor, CO, United StatesHQ checked Sep 30, 2026	51-200	313 contacts →
	Indirect evidence “Total Directional Services, LLC is a privately owned, managed and operated service company headquartered in Windsor, CO.” Source: RevenueBase Database · checked Sep 30, 2026
7	Leam Drilling Services	Partial evidence	New Iberia, LA, United StatesHQ checked Sep 30, 2026	501-1,000	291 contacts →
	Partial evidence “LEAM Drilling Systems, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
8	Independence Contract Drilling	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	286 contacts →
	Partial evidence “Corporate Overview Independence Contract Drilling was formed in 2011 as a vertically integrated premium land drilling services provider.” Source: RevenueBase Database · checked Sep 30, 2026
9	Varel International Energy Services NOW Wholly-Owned By Varel Energy Solutions	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	242 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
10	Nomac Drilling	Partial evidence	El Reno, OK, United StatesHQ checked Sep 30, 2026	1,001-5,000	134 contacts →
	Partial evidence “Nomac Drilling is now Patterson-UTI.” Source: RevenueBase Database · checked Sep 30, 2026
11	Geoprobe Systems	Strong evidence	Salina, KS, United StatesHQ checked Sep 30, 2026	51-200	107 contacts →
	Strong evidence “Geoprobe® Manufactures Powerful, Compact Machines & Tooling that Provide Direct Push, Rotary, & Sonic Drilling Capabilities to the Environmental, Geotechnical, Geothermal, &…” Source: RevenueBase Database · checked Sep 30, 2026
12	Newsco International Energy Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	11-50	103 contacts →
	Partial evidence “Newsco is a global Directional Drilling and MWD service company, recognized internationally for our quality tools, committed service and for providing customized innovative…” Source: RevenueBase Database · checked Sep 30, 2026
13	Bauer Equipment America	Indirect evidence	Conroe, TX, United StatesHQ checked Sep 30, 2026	51-200	92 contacts →
	Indirect evidence “The companies of BAUER AG are today active in a wide variety of fields: industrial engineering, construction, and equipment manufacturing.” Source: RevenueBase Database · checked Sep 30, 2026
14	Legacy Directional Drilling, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	87 contacts →
	Indirect evidence “Reliable.” Source: RevenueBase Database · checked Sep 30, 2026
15	American Augers	Indirect evidence	West-salem, OH, United StatesHQ checked Sep 30, 2026	201-500	84 contacts →
	Indirect evidence “AmericanAugers and Trencor underground construction equipment are second-to-none.” Source: RevenueBase Database · checked Sep 30, 2026
16	Hole Products	Strong evidence	Little Falls, MN, United StatesHQ checked Sep 30, 2026	51-200	83 contacts →
	Strong evidence “Hole Products is a leading manufacturer and supplier of high performance drilling supplies, tools and equipment to the construction, direct push, environmental, geotechnical…” Source: RevenueBase Database · checked Sep 30, 2026
17	Drillmec INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	79 contacts →
	Strong evidence “Drillmec is an international leader in design, manufacturing, and distribution of drilling and workover rigs for onshore and offshore applications, as well as a wide range of…” Source: RevenueBase Database · checked Sep 30, 2026
18	Shaft Drillers International	Indirect evidence	Mt Morris, PA, United StatesHQ checked Sep 30, 2026	1,001-5,000	78 contacts →
	Indirect evidence “Shaft Drillers International LLC Headquartered in Mt.” Source: RevenueBase Database · checked Sep 30, 2026
19	Timberline Drilling, INC	Partial evidence	Elko, NV, United StatesHQ checked Sep 30, 2026	201-500	77 contacts →
	Partial evidence “With more than 7.4 million feet drilled in the past seven years, Timberline Drilling has a proven track records in safety and production.” Source: RevenueBase Database · checked Sep 30, 2026
20	Ice, Inc.	Partial evidence	Matthews, NC, United StatesHQ checked Sep 30, 2026	51-200	59 contacts →
	Partial evidence “As a world leader in the deep foundation industry, the ICE® family is proud to still be engineering, machining and manufacturing pile driving and drilling equipment in the USA and…” Source: RevenueBase Database · checked Sep 30, 2026
21	Watson Drill Rigs	Strong evidence	Fort Worth, TX, United StatesHQ checked Sep 30, 2026	51-200	58 contacts →
	Strong evidence “As a long recognized leader and innovator in the Drilled Shaft Industry, Watson is uniquely qualified to design and manufacture drill rigs for drilled shaft (bored pile)…” Source: RevenueBase Database · checked Sep 30, 2026
22	Loadcraft Industries, LTD	Strong evidence	Brady, TX, United StatesHQ checked Sep 30, 2026	201-500	58 contacts →
	Strong evidence “Loadcraft specializes in total design and manufacturing of Drilling and Workover Rigs, and Drawworks.” Source: RevenueBase Database · checked Sep 30, 2026
23	LEE C. Moore, A Woolslayer Company	Indirect evidence	Catoosa, OK, United StatesHQ checked Sep 30, 2026	51-200	58 contacts →
	Indirect evidence “Today, Lee C.” Source: RevenueBase Database · checked Sep 30, 2026
24	BAY Shore Systems, INC	Partial evidence	Rathdrum, ID, United StatesHQ checked Sep 30, 2026	51-200	53 contacts →
	Partial evidence “Since 1978 Bay Shore Systems has been a leading innovator in foundation drilling equipment.” Source: RevenueBase Database · checked Sep 30, 2026
25	Hammer And Steel	Indirect evidence	Hazelwood, MO, United StatesHQ checked Sep 30, 2026	51-200	50 contacts →
	Indirect evidence “Hammer & Steel, Inc.” Source: RevenueBase Database · checked Sep 30, 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: dth drilling rig manufacturers. 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 dth drilling rig manufacturers.
Partial evidence: Its own public description names part of dth drilling rig manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name dth drilling rig manufacturers. 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 351 dth drilling rig manufacturers based in the United States

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Dth drilling rig manufacturers based in the United States at a glance

As of Sep 30, 2026

24.6%Verified-email coverage

31.4Average contacts per company

11-50Median size (employees)

10.0%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

106

11-50

147

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 351 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 dth drilling rig manufacturers, 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 “dth drilling rig manufacturers”. 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 dth drilling rig manufacturers), 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 dth drilling rig manufacturers, 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, 2,716 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 30, 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.

Dth drilling rig manufacturers by metro

Dth drilling rig manufacturers in Houston35

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 dth drilling rig manufacturers, 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 dth drilling rig manufacturers are there based in the United States?

RevenueBase identified 351 dth drilling rig manufacturers 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?

Boart Longyear, headquartered in West Valley City, tops this list with the largest team on record.

Which city has the most dth drilling rig manufacturers?

Houston leads with 35 headquartered companies, followed by Conroe (8) and Midland (8).

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 2,716 verified decision-maker contacts tracked across these 351 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 30, 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.