Company lists · Data refreshed September 2026

Top 25 Directional survey and drilling services based in the United States

Name: Directional survey and drilling services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,214 companies tracked

RevenueBase identified 1,214 directional survey and drilling services headquartered in the United States as of September 2026 and tracks 104,376 professional contacts across them, including 27,486 with verified work emails. Houston is the largest hub.

This list covers directional survey and drilling services 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 19, 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 19, 2026 86% judged on-target in blind review

1,214Companies

104,376Contacts tracked

27,486Verified emails

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The 25 largest directional survey and drilling services based in the United States

Ranked by team size

Top 25 of 1,214 directional survey and drilling services based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to directional survey and drilling services: 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	Halliburton	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	10001+	53,380 contacts →
	Indirect evidence “We collaborate and engineer solutions to maximize asset value for our customers.” Source: RevenueBase Database · checked Sep 19, 2026
2	EXPRO	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	5,001-10,000	6,466 contacts →
	Indirect evidence “Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Source: RevenueBase Database · checked Sep 19, 2026
3	Nabors Industries	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	10001+	5,865 contacts →
	Indirect evidence “Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: RevenueBase Database · checked Sep 19, 2026
4	KEY Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,755 contacts →
	Indirect evidence “Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Source: RevenueBase Database · checked Sep 19, 2026
5	Patterson-Uti	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	10001+	2,317 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
6	Newpark	Indirect evidence	Katy, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,244 contacts →
	Indirect evidence “Newpark Fluids Systems is the world’s leading pure-play oil & gas and geothermal fluid solutions provider.” Source: RevenueBase Database · checked Sep 19, 2026
7	Scientific Drilling	Partial evidence	The Woodlands, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,134 contacts →
	Partial evidence “THE ULTIMATE PARTNER IN WELLBORE PLACEMENT Scientific Drilling International is an independent service provider offering a complete high accuracy wellbore placement and drilling…” Source: RevenueBase Database · checked Sep 19, 2026
8	Innovex	Indirect evidence	Humble, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	844 contacts →
	Indirect evidence “Innovex International, Inc (NYSE: INVX) is a Houston-based company established in 2024 following the merger of Dril-Quip, Inc and Innovex Downhole Solutions.” Source: RevenueBase Database · checked Sep 19, 2026
9	WIS Wellbore Integrity Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	744 contacts →
	Indirect evidence “Wellbore Integrity Solutions provides superior technologies and global service domain expertise, enabling our customers to enhance the full lifecycle of their wells by solving…” Source: RevenueBase Database · checked Sep 19, 2026
10	Saexploration	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	521 contacts →
	Partial evidence “SAExploration offers a full range of geophysical ground acquisition services from design, prospecting, drilling, recording and analysis of field quality, as well as mobilization…” Source: RevenueBase Database · checked Sep 19, 2026
11	Cactus Drilling CO	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 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 19, 2026
12	Thru Tubing Solutions	Indirect evidence	Newcastle, OK, United StatesHQ checked Sep 19, 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 19, 2026
13	Global Geophysical Services	Indirect evidence	Missouri City, TX, United StatesHQ checked Sep 19, 2026	201-500	396 contacts →
	Indirect evidence “GGS provides an integrated suite of Geoscience solutions to the global oil and gas industry including high-resolution RG-3D Reservoir Grade® seismic data acquisition, Multi Client…” Source: RevenueBase Database · checked Sep 19, 2026
14	Express Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	501-1,000	379 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
15	Topographic, CO	Partial evidence	Benbrook, TX, United StatesHQ checked Sep 19, 2026	201-500	335 contacts →
	Partial evidence “What began as a small company in the oilfields of Southern Oklahoma, today Topographic Land Surveyors stands as the industry leader in the fields of Surveying, Mapping…” Source: RevenueBase Database · checked Sep 19, 2026
16	AIR Drilling Associates	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	328 contacts →
	Partial evidence “ADA is a global energy services company specializing in advanced drilling solutions for oil, gas, and geothermal applications.” Source: RevenueBase Database · checked Sep 19, 2026
17	Total Directional Services, LLC	Partial evidence	Windsor, CO, United StatesHQ checked Sep 19, 2026	51-200	313 contacts →
	Partial evidence “Total Directional Services, LLC is a privately owned, managed and operated service company headquartered in Windsor, CO.” Source: RevenueBase Database · checked Sep 19, 2026
18	Leam Drilling Services	Partial evidence	New Iberia, LA, United StatesHQ checked Sep 19, 2026	501-1,000	291 contacts →
	Partial evidence “LEAM Drilling Systems, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
19	Altitude Energy Partners	Strong evidence	The Woodlands, TX, United StatesHQ checked Sep 19, 2026	51-200	288 contacts →
	Strong evidence “Altitude Energy Partners (AEP) provides trusted expertise in Directional Drilling.” Source: RevenueBase Database · checked Sep 19, 2026
20	Drilling Tools International, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	270 contacts →
	Indirect evidence “Strength.” Source: RevenueBase Database · checked Sep 19, 2026
21	Gordon Technologies, LLC	Partial evidence	Scott, LA, United StatesHQ checked Sep 19, 2026	201-500	265 contacts →
	Partial evidence “Gordon Technologies is an engineering company providing innovative new technology and service to the oil and gas drilling industry.” Source: RevenueBase Database · checked Sep 19, 2026
22	Prodirectional	Strong evidence	Conroe, TX, United StatesHQ checked Sep 19, 2026	201-500	232 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
23	MS Directional	Strong evidence	Conroe, TX, United StatesHQ checked Sep 19, 2026	501-1,000	215 contacts →
	Strong evidence “For more than 30 years, MS Directional, a Patterson-UTI company, has led the way in directional drilling services across North America.” Source: RevenueBase Database · checked Sep 19, 2026
24	MS Energy Services	Partial evidence	Conroe, TX, United StatesHQ checked Sep 19, 2026	501-1,000	209 contacts →
	Partial evidence “Visit us at MS Directional” Source: RevenueBase Database · checked Sep 19, 2026
25	Renegade Services	Indirect evidence	Levelland, TX, United StatesHQ checked Sep 19, 2026	501-1,000	197 contacts →
	Indirect evidence “Renegade Services is the largest privately owned wireline service company servicing the oil and gas industry in the United States.” Source: RevenueBase Database · checked Sep 19, 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: directional survey and drilling services. 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 directional survey and drilling services.
Partial evidence: Its own public description names part of directional survey and drilling services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name directional survey and drilling services. 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 1,214 directional survey and drilling services based in the United States

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Directional survey and drilling services based in the United States at a glance

As of Sep 19, 2026

26.3%Verified-email coverage

86.0Average contacts per company

11-50Median size (employees)

12.6%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

488

11-50

463

51-200

171

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 1,214 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 directional survey and drilling services, 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 “directional survey and drilling services”. 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 directional survey and drilling services), 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 directional survey and drilling services, 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, 27,486 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 19, 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.

Directional survey and drilling services by metro

Directional survey and drilling services in Houston153
Directional survey and drilling services in Midland28

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 directional survey and drilling services, 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 directional survey and drilling services are there based in the United States?

RevenueBase identified 1,214 directional survey and drilling services 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?

Halliburton, headquartered in Houston, tops this list with the largest team on record.

Which city has the most directional survey and drilling services?

Houston leads with 153 headquartered companies, followed by Midland (28) and Oklahoma City (23).

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 27,486 verified decision-maker contacts tracked across these 1,214 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 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 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.