Company lists · Data refreshed September 2026

Top 25 Underbalanced drilling companies worldwide

RevenueBase identified 216 company matches for underbalanced drilling companies worldwide as of September 2026 and tracks 9,245 professional contacts across them, including 1,499 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for underbalanced drilling companies worldwide, 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 September 22, 2026. Country and city lists for underbalanced drilling companies follow the table.

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 Sep 22, 2026 How this list was built
216Companies
9,245Contacts tracked
1,499Verified emails
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The 25 largest underbalanced drilling companies worldwide

Ranked by team size
Top 25 of 216 company matches for underbalanced drilling companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 22, 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 matchThe Woodlands, TX, United StatesHQ recorded Sep 22, 20261,001-5,0001,285 contacts →

Exact match

“Cudd offers a broad range of technical and specialized oilfield services to companies engaged in the exploration and production of oil and natural gas worldwide.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2Exact matchKaty, TX, United StatesHQ recorded Sep 22, 20261,001-5,0001,244 contacts →

Exact match

“Newpark Fluids Systems is the world’s leading pure-play oil & gas and geothermal fluid solutions provider.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchNewcastle, OK, United StatesHQ recorded Sep 22, 2026501-1,000428 contacts →

Exact match

“Only Thru Tubing Solutions offers the specialized downhole equipment and services to deliver the results you need, right when you need them.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Sep 22, 2026501-1,000379 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 · Sep 22, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Sep 22, 2026201-500328 contacts →

Exact match

“ADA is a global energy services company specializing in advanced drilling solutions for oil, gas, and geothermal applications.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchNew Iberia, LA, United StatesHQ recorded Sep 22, 2026501-1,000291 contacts →

Exact match

“LEAM Drilling Systems, Inc.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Sep 22, 2026201-500270 contacts →

Exact match

“Strength.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchDubai, United Arab EmiratesHQ recorded Sep 22, 202651-200172 contacts →

Exact match

“Seamless Integration Magnum Technology Center designs and manufactures complete equipment packages for Well Testing, Early Production Facilities, Underbalanced Drilling and…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchCalgary, AB, CanadaHQ recorded Sep 22, 2026201-500166 contacts →

Exact match

“Founded in 2005, Pacesetter Directional Drilling helps the world’s leading explorers and producers achieve their most ambitious directional drilling goals through cutting-edge…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
10Exact matchUnited StatesHQ recorded Sep 22, 2026501-1,000165 contacts →

Exact match

“Gulf Drilling (GD) is a fully owned subsidiary of MB Petroleum Services, a 100% Omani company that provides advanced drilling solutions to the oil and gas industry, formed with…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchLuján De Cuyo, ArgentinaHQ recorded Sep 22, 202651-200109 contacts →

Exact match

“Maref Group es una empresa especializada en el desarrollo, fabricación y comercialización de soluciones químicas para las industrias de Petróleo, Gas, Minería y Construcción.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchAzaiba, OmanHQ recorded Sep 22, 202651-200103 contacts →

Exact match

“Valiant Oman Oilfield Services, LLC, which is one of the leading oilfield services provider for Drilling Rigs and all related services such as Cementing, Directional Drilling…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchThe Woodlands, TX, United StatesHQ recorded Sep 22, 202651-20085 contacts →

Exact match

“K&M Technology Group was founded in 1988 and has been involved in extended reach and horizontal drilling since its inception.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchJakarta Selatan, IndonesiaHQ recorded Sep 22, 202651-20085 contacts →

Exact match

“PT.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchEdmond, OK, United StatesHQ recorded Sep 22, 202651-20083 contacts →

Exact match

“Valence Drilling Fluids, LLC began operations on October 1, 2017 in the Mid-Continent.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchUnited StatesHQ recorded Sep 22, 2026201-50073 contacts →

Exact match

“Take Drilling In A Better Direction.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchUnited StatesHQ recorded Sep 22, 202651-20067 contacts →

Exact match

“NightHawk Completion Services focuses on specialty fluids, flow back services, and sand management.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18Exact matchMidland, TX, United StatesHQ recorded Sep 22, 2026201-50067 contacts →

Exact match

“Tony Farish founded the company in 1980, and was joined the next year by his brother, Ronnie.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchBakersfield, CA, United StatesHQ recorded Sep 22, 202651-20065 contacts →

Exact match

“GEO Drilling Fluids Mission is to provide the most cost effective source for drilling fluids and engineering applications in each of its operating areas.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20Exact matchAnkara, TürkiyeHQ recorded Sep 22, 202651-20061 contacts →

Exact match

“GEOS is a full-service drilling fluids company headquartered in Ankara, Turkey.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
21Exact matchSignall Hill, CA, United StatesHQ recorded Sep 22, 202611-5059 contacts →

Exact match

“John M.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchThe Woodlands, TX, United StatesHQ recorded Sep 22, 202611-5049 contacts →

Exact match

“DrillChem delivers specialty chemical solutions designed to solve complex drilling challenges and improve operational performance.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchConroe, TX, United StatesHQ recorded Sep 22, 2026201-50037 contacts →

Exact match

“Scout Downhole was founded in 2009 and provides innovative downhole drilling technologies, high-quality manufacturing, and unparalleled customer service.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
24Exact matchUnited StatesHQ recorded Sep 22, 2026201-50037 contacts →

Exact match

“Established in 1993, Petrochem Performance Chemicals specializes in drilling fluids and associated equipment services.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25Exact matchTehran, IranHQ recorded Sep 22, 202651-20037 contacts →

Exact match

“Petro Kariz Directional Services, a PEDC company, is a leading provider of Directional Drilling and Measurement While Drilling services.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase

Showing 25 of 216 underbalanced drilling companies worldwide

See the full list, filter by size, metro and specialty, and access 1,499 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Underbalanced drilling companies worldwide at a glance

As of Sep 22, 2026
16.2%Verified-email coverage
42.8Average contacts per company
11-50Median size (employees)
5.6%Largest-city concentration · Houston
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
57
11-50
58
51-200
59
201-500
23
501-1,000
11
1,001-5,000
4
5,001-10,000
1

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for underbalanced drilling companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “underbalanced drilling companies” 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. 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 1,499 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 September 22, 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.

Underbalanced drilling companies by location

1 lists · largest first

Every Underbalanced drilling companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “underbalanced drilling companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underbalanced drilling companies are there worldwide?

RevenueBase identified 216 company matches for underbalanced drilling companies worldwide as of September 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?

Cudd Energy Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most underbalanced drilling companies?

The United States leads with 83 companies. Every underbalanced drilling companies list by country and city is linked on this page.

Which city has the most underbalanced drilling companies?

Houston leads with 12 company records, followed by Midland (9) and Calgary (8).

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 1,499 professional contacts with verified work emails tracked across these 216 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 September 22, 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.