Company lists · Data refreshed September 2026

Top 25 Underbalanced drilling service providers based in the United States

RevenueBase identified 80 company matches for underbalanced drilling service providers associated with the United States as of September 2026 and tracks 4,254 professional contacts across them, including 909 with verified work emails. Houston is the largest hub.

This list covers company matches for underbalanced drilling service providers associated with the United States, 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.

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
80Companies
4,254Contacts tracked
909Verified emails
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The 25 largest underbalanced drilling service providers based in the United States

Ranked by team size
Top 25 of 80 company matches for underbalanced drilling service providers based in the United States, 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 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
2Exact 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
3Exact 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
4Exact 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
5Exact matchHouston, TX, United StatesHQ recorded Sep 22, 202651-200138 contacts →

Exact match

“Since 1989 WWT International (WWT) has been developing unique products to help operators reach farther in drilling, completion and intervention worldwide.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchEl Reno, OK, United StatesHQ recorded Sep 22, 20261,001-5,000134 contacts →

Exact match

“Nomac Drilling is now Patterson-UTI.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Sep 22, 2026501-1,00087 contacts →

Exact match

“Upstream International provides drilling, completions/work-over, directional, MWD, safety, fluids and MPD professionals to the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact 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
9Exact 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
10Exact 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
11Exact matchHouston, TX, United StatesHQ recorded Sep 22, 202651-20045 contacts →

Exact match

“AXON Energy Services is a trusted global provider of pressure control equipment, spare and aftermarket parts, and expert repair and remanufacturing services for land, offshore and…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchBooker, TX, United StatesHQ recorded Sep 22, 202651-20035 contacts →

Exact match

“Drilling Fluids Technology has supported the oil and gas industry with a complete line of quality products and services since its inception as a mud company in 1985.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchSomerset, PA, United StatesHQ recorded Sep 22, 202611-5031 contacts →

Exact match

“Keystone Drill Services pairs over a century of drilling experience with a diverse supplier network to resolve drill-related issues with unprecedented efficiency.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchMidland, TX, United StatesHQ recorded Sep 22, 202651-20031 contacts →

Exact match

“ADS has established a highly skilled team of pressure control professionals to deliver premium and innovative managed pressure drilling and well control solutions to the oil and…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Sep 22, 202611-5031 contacts →

Exact match

“At Universal Fluid Services we combine unmatched drilling experience with our unique ability to fully understand customer needs, resulting in consistently better drilling outcomes.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchGeorgetown, TX, United StatesHQ recorded Sep 22, 202651-20028 contacts →

Exact match

“Bench Tree is a leading provider of measurement-while-drilling (MWD) and logging-while-drilling (LWD) products, delivering a comprehensive portfolio of state-of-the-art solutions…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchMidland, TX, United StatesHQ recorded Sep 22, 202611-5026 contacts →

Exact match

“With over 100 years of combined experience in the directional drilling services industry, Nzone Guidance is one of the most comprehensive oilfield service companies with an…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18Exact matchBroussard, LA, United StatesHQ recorded Sep 22, 202651-20024 contacts →

Exact match

“Since 2003, Downhole Drilling Services, LLC has been a driving force in the horizontal/directional drilling industry.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchCorpus Christi, TX, United StatesHQ recorded Sep 22, 202611-5019 contacts →

Exact match

“Established in 1981, Black Gold Rental Tools, Inc.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Sep 22, 202651-20017 contacts →

Exact match

“M-I SWACO couples best in class technology with a robust supply chain to deliver the most optimized solution for your drilling uid needs.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
21Exact matchSan Antonio, TX, United StatesHQ recorded Sep 22, 202611-5015 contacts →

Exact match

“AIP Drilling Division Inc, a minority owned company, provides a team of qualified technical professionals, both international and domestic.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchGillette, WY, United StatesHQ recorded Sep 22, 202611-5010 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchOrlando, FL, United StatesHQ recorded Sep 22, 202611-508 contacts →

Exact match

“We provide specialized drilling and completion solutions for today’s most challenging applications.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
24Exact matchMidland, TX, United StatesHQ recorded Sep 22, 202611-508 contacts →

Exact match

“Optimize your company’s capital and operating expenses with help from SiekerBynum Energy Services in Midland, TX.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25Exact matchNatchez, MS, United StatesHQ recorded Sep 22, 202651-2008 contacts →

Exact match

“Energy Drilling Company is a privately owned drilling contractor that specializes in providing expert solutions for any drilling challenge.”

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

Showing 25 of 80 underbalanced drilling service providers based in the United States

See the full list, filter by size, metro and specialty, and access 909 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Underbalanced drilling service providers based in the United States at a glance

As of Sep 22, 2026
21.4%Verified-email coverage
53.2Average contacts per company
11-50Median size (employees)
20.0%Largest-city concentration · Houston
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
21
11-50
27
51-200
21
201-500
2
501-1,000
5
1,001-5,000
4

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 80 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “underbalanced drilling service providers” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 909 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.

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 service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underbalanced drilling service providers are there based in the United States?

RevenueBase identified 80 company matches for underbalanced drilling service providers associated with the United States 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?

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

Which city has the most underbalanced drilling service providers?

Houston leads with 16 company records, followed by Midland (9) and Bakersfield (3).

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 909 professional contacts with verified work emails tracked across these 80 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.