Company lists · Data refreshed September 2026
Top 25 Directional survey and drilling services worldwide
RevenueBase identified 5,133 directional survey and drilling services worldwide as of September 2026 and tracks 195,555 professional contacts across them, including 42,826 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers directional survey and drilling services worldwide, 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. Country and city lists for directional survey and drilling services follow the table.
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.
The 25 largest directional survey and drilling services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 53,380 contacts → | ||||
Indirect evidence “We collaborate and engineer solutions to maximize asset value for our customers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | 5,865 contacts → | ||||
Indirect evidence “Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 3,932 contacts → | ||||
Partial evidence “We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 3,251 contacts → | ||||
Partial evidence “ADES is a world-leading international provider of oil and gas drilling services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,471 contacts → | ||||
Indirect evidence “Precision is a leading provider of safe and High Performance, High-Value services to the oil and gas industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,373 contacts → | ||||
Partial evidence “Archer is a company providing drilling and well services to the global energy industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,249 contacts → | ||||
Partial evidence “OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 2,176 contacts → | ||||
Indirect evidence “Ensign Energy Services Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 2,064 contacts → | ||||
Indirect evidence “Somos la mayor prestadora de servicios de perforación de la Argentina y somos líderes en la prestación de servicios asociados al mantenimiento y optimización de los pozos de…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,685 contacts → | ||||
Partial evidence “Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,447 contacts → | ||||
Partial evidence “Major Drilling Group International Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,244 contacts → | ||||
Indirect evidence “Abraj Energy Services ("Abraj"), was founded in May 2006 and has taken major strides.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,200 contacts → | ||||
Partial evidence “PT Pertamina Drilling Services Indonesia (Pertamina Drilling) was established on June 13th, 2008.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,160 contacts → | ||||
Indirect evidence “BGP is one of the world's leading geophysical service companies, delivering a wide range of technologies, services and equipment to the oil and gas industry worldwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,097 contacts → | ||||
Partial evidence “HMH is a premier drilling solutions provider - delivering a broad portfolio of products and services that are designed to be the safest and most efficient in the industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1,069 contacts → | ||||
Indirect evidence “A Queiroz Galvão Óleo e Gás (QGOG) é a maior companhia privada de prestação de serviços de perfuração e produção do Brasil.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 994 contacts → | ||||
Indirect evidence “Empresa líder en el Sector Petrolero, con presencia a Nivel Nacional, principales clientes PEMEX Y CFE, con servicios como perforación de pozos terrestres, Marinos, Geotérmicos…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 933 contacts → | ||||
Indirect evidence “Excellence Logging is an established energy services provider focused on optimizing well performance.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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, 2026Thanks. The Data Team will review it. | |||||
| 25 | 821 contacts → | ||||
Strong evidence “Phoenix Technology Services delivers progressive directional drilling solutions to unconventional drilling markets around the world.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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 5,133 directional survey and drilling services worldwide
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Directional survey and drilling services worldwide at a glance
As of Sep 19, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for directional survey and drilling services are linked below.
- What qualifies
- Companies worldwide 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.
- 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, 42,826 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 location
23 lists · largest firstEvery Directional survey and drilling services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Directional survey and drilling services based in the United States1,214
- Directional survey and drilling services based in Canada392
- Directional survey and drilling services based in Australia320
- Directional survey and drilling services based in the United Kingdom275
- Directional survey and drilling services based in Brazil195
- Directional survey and drilling services based in India148
- Directional survey and drilling services based in Indonesia128
- Directional survey and drilling services based in Germany109
- Directional survey and drilling services based in France99
- Directional survey and drilling services based in Türkiye95
- Directional survey and drilling services based in Italy79
- Directional survey and drilling services based in the United Arab Emirates78
- Directional survey and drilling services based in Nigeria73
- Directional survey and drilling services based in South Africa64
- Directional survey and drilling services based in Mexico62
- Directional survey and drilling services based in Argentina61
- Directional survey and drilling services based in Malaysia55
- Directional survey and drilling services based in Peru51
- Directional survey and drilling services based in the Netherlands50
- Directional survey and drilling services based in Poland47
- Directional survey and drilling services based in Chile42
- Directional survey and drilling services based in Norway42
- Directional survey and drilling services based in Belgium39
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 worldwide?
RevenueBase identified 5,133 directional survey and drilling services worldwide 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 country has the most directional survey and drilling services?
The United States leads with 1,214 companies, followed by Canada (392) and Australia (320). Every directional survey and drilling services list by country and city is linked on this page.
Which city has the most directional survey and drilling services?
Houston leads with 153 headquartered companies, followed by Calgary (115) and London (34).
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 42,826 verified decision-maker contacts tracked across these 5,133 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.