Company lists · Data refreshed October 2026

Top 18 Geological drilling contractors based in Houston, United States

RevenueBase identified 47 company matches for geological drilling contractors associated with Houston, United States as of October 2026 and tracks 1,999 professional contacts across them, including 394 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for geological drilling contractors associated with Houston, 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 October 13, 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 Oct 13, 2026 How this list was built
47Companies
1,999Contacts tracked
394Verified emails
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The 18 largest geological drilling contractors based in Houston, United States

Ranked by team size
Top 18 of 47 company matches for geological drilling contractors based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 13, 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 matchHouston, TX, United StatesHQ recorded Oct 13, 2026201-500653 contacts →

Exact match

“SAExploration offers a full range of geophysical ground acquisition services from design, prospecting, drilling, recording and analysis of field quality, as well as mobilization…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Oct 13, 2026201-500345 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 · Oct 13, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Oct 13, 2026201-50078 contacts →

Exact match

“Ryan Directional Services, a Nabors company, is a leading provider of Directional Drilling and Measurement While Drilling services.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202611-5051 contacts →

Exact match

“HDD Industry Sharewell is the leading supplier of downhole drilling tools, guidance systems and services for the Horizontal Directional Drilling industry.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202611-5029 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 · Oct 13, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202611-5027 contacts →

Exact match

“Professional Engineering support for geotechnical, construction, oil and gas, horizontal directional drillings, materials testing, and forensic studies for residential and…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202611-5023 contacts →

Exact match

“Envirotech Environmental Services is a trusted provider of remediation, IDW waste, and site services, delivering safe, responsive, and practical solutions for environmental…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202651-20021 contacts →

Exact match

“Established since 1995, GTS Geotech (GTS) provides independent, cost effective, geotechnical support solutions to the international oil and gas industry.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Oct 13, 20261-1017 contacts →

Exact match

“We bring cost-saving well construction technologies to the growing unconventional shale markets.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Oct 13, 20261-1017 contacts →

Exact match

“Integrity Insitu is a North American based service company that provides downhole measurements of various rock strength and stress properties via the patented Integrity Tool.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202611-5016 contacts →

Exact match

“Ellington Geological Services is a team of highly-trained and dedicated professionals and technicians, that truly understand the importance of the data contained in rocks and the…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202611-5014 contacts →

Exact match

“PTS Labs is a leading provider of Core Analysis and Geotechnical Services for the Oil and Gas Industry.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202611-5010 contacts →

Exact match

“NOVA Directional is a full service directional drilling service company, specialized in achieving accuracy, precision, and speed.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202611-5010 contacts →

Exact match

“Terra Directional Services provides full-service directional drilling and project management for the oil and gas industry.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202611-505 contacts →

Exact match

“Wellpath Energy Services is a Horizontal and Directional drilling company serving the Independent Oil & Gas Industry.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Oct 13, 20261-102 contacts →

Exact match

“Geosphere LLC is an independent geosteering services provider.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Oct 13, 20261-102 contacts →

Exact match

“IGL is a leading provider of environmental, geotechnical and core analysis services for the Environmental, and Oil and Gas Industries.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Oct 13, 202611-502 contacts →

Exact match

“Our multidisciplinary team of industry experts has extensive experience in Geosciences, Operations, Geomechanics, Administration and Software Development for exploration…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase

Showing 18 of 47 geological drilling contractors based in Houston, United States

See the full list, filter by size, metro and specialty, and access 394 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geological drilling contractors based in Houston, United States at a glance

As of Oct 13, 2026
19.7%Verified-email coverage
42.5Average contacts per company
11-50Median size (employees)
Oct 13, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
22
51-200
3
201-500
4
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 47 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 Houston, United States whose business descriptions match “geological drilling contractors” 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 394 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 October 13, 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 “geological drilling contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geological drilling contractors are there based in Houston, United States?

RevenueBase identified 47 company matches for geological drilling contractors associated with Houston, United States as of October 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?

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

Which city in the United States has the most geological drilling contractors?

Houston leads the United States with 47 company records, followed by Denver (12) and Midland (11).

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 394 professional contacts with verified work emails tracked across these 47 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 October 13, 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.