Company lists · Data refreshed September 2026

Top 25 Drilling tool manufacturers based in the United States

Name: Drilling tool 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 16, 2026 730 companies tracked

RevenueBase identified 730 drilling tool manufacturers headquartered in the United States as of September 2026 and tracks 22,848 professional contacts across them, including 5,996 with verified work emails. Houston is the largest hub.

This list covers drilling tool 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 16, 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 16, 2026 86% judged on-target in blind review

730Companies

22,848Contacts tracked

5,996Verified emails

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The 25 largest drilling tool manufacturers based in the United States

Ranked by team size

Top 25 of 730 drilling tool manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to drilling tool 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 16, 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 16, 2026
2	OIL States International	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	5,001-10,000	2,215 contacts →
	Indirect evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
3	Superior Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,938 contacts →
	Indirect evidence “For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…” Source: RevenueBase Database · checked Sep 16, 2026
4	Stewart & Stevenson	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 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 16, 2026
5	Ulterra Drilling Technologies L.P	Partial evidence	Fort Worth, TX, United StatesHQ checked Sep 16, 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 16, 2026
6	Thru Tubing Solutions	Indirect evidence	Newcastle, OK, United StatesHQ checked Sep 16, 2026	501-1,000	428 contacts →
	Indirect evidence “Only Thru Tubing Solutions offers the specialized downhole equipment and services to deliver the results you need, right when you need them.” Source: RevenueBase Database · checked Sep 16, 2026
7	Varel Energy Solutions	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	424 contacts →
	Strong evidence “Founded in 1947, Varel Energy Solutions is one of the world’s largest independent manufacturers and suppliers of downhole drilling and completions products to the energy sector.” Source: RevenueBase Database · checked Sep 16, 2026
8	AES Drilling Fluids	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	501-1,000	361 contacts →
	Partial evidence “AES Drilling Fluids is prepared to successfully deliver on any challenging project from the well site to the customer's office.” Source: RevenueBase Database · checked Sep 16, 2026
9	Sunnen Products Company	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 16, 2026	501-1,000	326 contacts →
	Indirect evidence “Sunnen Products Company has been a global leader in the manufacturing and distribution of bore sizing and finishing equipment, engine rebuilding equipment, and tooling and…” Source: RevenueBase Database · checked Sep 16, 2026
10	Allied Machine & Engineering	Strong evidence	Dover, OH, United StatesHQ checked Sep 16, 2026	201-500	315 contacts →
	Strong evidence “Allied Machine & Engineering manufacturers holemaking & finishing tool systems, such as industrial drills, boring tools, thread mills, reamers, & more in Dover, Ohio.” Source: RevenueBase Database · checked Sep 16, 2026
11	Total Directional Services, LLC	Indirect evidence	Windsor, CO, United StatesHQ checked Sep 16, 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 16, 2026
12	NCS Multistage	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	201-500	301 contacts →
	Indirect evidence “Since our founding in 2006, NCS Multistage has grown to be a leading provider of engineered products and support services for oil and natural gas wells around the world.” Source: RevenueBase Database · checked Sep 16, 2026
13	Leam Drilling Services	Partial evidence	New Iberia, LA, United StatesHQ checked Sep 16, 2026	501-1,000	291 contacts →
	Partial evidence “LEAM Drilling Systems, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
14	Premium Oilfield Technologies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	201-500	284 contacts →
	Indirect evidence “Since 2003, Premium Oilfield Technologies has been supplying high quality products to the oil and gas industry.” Source: RevenueBase Database · checked Sep 16, 2026
15	Drilling Tools International, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	201-500	270 contacts →
	Indirect evidence “Strength.” Source: RevenueBase Database · checked Sep 16, 2026
16	OSG Usa, INC	Strong evidence	Saint-charles, IL, United StatesHQ checked Sep 16, 2026	201-500	241 contacts →
	Strong evidence “OSG is a leading manufacturer of taps, end mills, drills and thread-making tools.” Source: RevenueBase Database · checked Sep 16, 2026
17	Geodynamics, INC	Indirect evidence	Millsap, TX, United StatesHQ checked Sep 16, 2026	201-500	183 contacts →
	Indirect evidence “GEODynamics creates and delivers downhole solutions that enable unsurpassed oil and gas well economics, performance, and lifespan.” Source: RevenueBase Database · checked Sep 16, 2026
18	Diamond Products Limited	Partial evidence	Elyria, OH, United StatesHQ checked Sep 16, 2026	201-500	179 contacts →
	Partial evidence “Diamond Products is a world leader in the manufacturing and distribution of diamond tools and equipment with the widest selection of wet and dry diamond blades and diamond core…” Source: RevenueBase Database · checked Sep 16, 2026
19	Reservoir Group	Indirect evidence	Stafford, TX, United StatesHQ checked Sep 16, 2026	201-500	178 contacts →
	Indirect evidence “Reservoir Group is a world-class niche oilfield services company that has been addressing customer challenges for more than 70 years.” Source: RevenueBase Database · checked Sep 16, 2026
20	SRI Energy, INC	Indirect evidence	Sugar Land, United StatesHQ checked Sep 16, 2026	201-500	168 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
21	Windlass Engineers & Services	Strong evidence	Tomball, TX, United StatesHQ checked Sep 16, 2026	201-500	165 contacts →
	Strong evidence “Windlass manufactures, supplies and supports a wide range of API certified drilling equipment.” Source: RevenueBase Database · checked Sep 16, 2026
22	Grant Prideco	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	10001+	162 contacts →
	Indirect evidence “From its founding in 1960, Grant Prideco has become the world's technology leader for drill pipe and drill stem accessories.” Source: RevenueBase Database · checked Sep 16, 2026
23	Stabil Drill	Partial evidence	Lafayette, LA, United StatesHQ checked Sep 16, 2026	201-500	140 contacts →
	Partial evidence “When it comes to bottomhole assemblies, there's only one rental tool name to know, Stabil Drill.” Source: RevenueBase Database · checked Sep 16, 2026
24	Serva Group	Indirect evidence	Catoosa, OK, United StatesHQ checked Sep 16, 2026	201-500	139 contacts →
	Indirect evidence “SERVA develops specialized gas and oilfield equipment to offer reliable, safe and efficient products for global energy development.” Source: RevenueBase Database · checked Sep 16, 2026
25	WWT International	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	51-200	138 contacts →
	Partial evidence “Since 1989 WWT International (WWT) has been developing unique products to help operators reach farther in drilling, completion and intervention worldwide.” Source: RevenueBase Database · checked Sep 16, 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: drilling tool 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 drilling tool manufacturers.
Partial evidence: Its own public description names part of drilling tool manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name drilling tool 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 730 drilling tool manufacturers based in the United States

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Drilling tool manufacturers based in the United States at a glance

As of Sep 16, 2026

26.2%Verified-email coverage

31.3Average contacts per company

11-50Median size (employees)

13.2%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

240

11-50

290

51-200

131

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 730 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 drilling tool 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 “drilling tool 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 drilling tool 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 drilling tool 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, 5,996 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 16, 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.

Drilling tool manufacturers by metro

Drilling tool manufacturers in Houston96

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 drilling tool 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 drilling tool manufacturers are there based in the United States?

RevenueBase identified 730 drilling tool 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 drilling tool manufacturers?

Houston leads with 96 headquartered companies, followed by Conroe (17) and Midland (13).

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 5,996 verified decision-maker contacts tracked across these 730 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 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 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.