Company lists · Data refreshed October 2026

Top 25 Geoscientific engineering services based in Houston, United States

Name: Geoscientific engineering services based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 26, 2026 309 companies tracked

RevenueBase identified 309 company matches for geoscientific engineering services associated with Houston, United States as of October 2026 and tracks 13,978 professional contacts across them, including 4,838 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for geoscientific engineering services 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 26, 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 26, 2026 How this list was built

309Companies

13,978Contacts tracked

4,838Verified emails

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The 25 largest geoscientific engineering services based in Houston, United States

Ranked by team size

Top 25 of 309 company matches for geoscientific engineering services based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 26, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	LJA	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	1,001-5,000	2,148 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
2	Walter P Moore	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	1,001-5,000	1,404 contacts →
	Exact match “Welcome to Walter P Moore!” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
3	Gulf Companies	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	1,001-5,000	1,171 contacts →
	Exact match “At Gulf Companies, we are driven by our mission to serve a vital role in the global energy industry.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
4	KBR Energo Engineering	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	n/a	795 contacts →
	Exact match “Energo Engineering is a KBR Company that provides the full package of structural integrity management (SIM) and advanced structural engineering services for offshore floating and…” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
5	Saexploration	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	201-500	653 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 26, 2026 · View company records in RevenueBase
6	GSI Environmental INC	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	201-500	272 contacts →
	Exact match “GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
7	Ehra Engineering	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	201-500	252 contacts →
	Exact match “EHRA Engineering is a civil engineering, surveying, low impact developing, land planning, construction phase services, traffic, emergency management and landscape architecture…” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
8	Remedial Construction Services, L.P. Recon	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	201-500	221 contacts →
	Exact match “Since 1989, RECON has successfully completed over environmental remediation, geotechnical, and mine reclamation projects.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
9	HVJ Associates	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	199 contacts →
	Exact match “Completing public infrastructure projects comes with tremendous pressure to serve the public while completing each project on-time and on-budget.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
10	IDS Engineering Group	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	196 contacts →
	Exact match “Founded in 1970, IDS Engineering Group is a Houston-based civil engineering and surveying firm with over five decades of experience delivering infrastructure solutions for public…” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
11	Zentech Incorporated	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	191 contacts →
	Exact match “Zentech, Inc, an engineering consulting and software development company, headquartered in Houston, TX, is comprised of experienced professionals specializing in providing…” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
12	ESG Solutions	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	177 contacts →
	Exact match “ESG Solutions is a world leader in passive microseismic monitoring.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
13	PPI Quality & Engineering, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	201-500	137 contacts →
	Exact match “PPI Quality & Engineering, a member of the Kiwa group of companies, saves its clients millions by providing economic solutions for complicated projects for the renewable energy…” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
14	Perc Engineering	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	136 contacts →
	Exact match “PERC Engineering is a full-service engineering & project management firm in the oil & gas energy sector.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
15	Edge Engineering And Science, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	123 contacts →
	Exact match “Edge Engineering & Science, LLC (EDGE) is a privately owned professional services firm headquartered in Houston, Texas.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
16	Geosoftware	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	114 contacts →
	Exact match “GeoSoftware is the global trusted partner for subsurface geoscience software and consulting services.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
17	Benthic - Utec	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	110 contacts →
	Exact match “Benthic is a global leader in offshore marine geotechnical investigation, survey, analysis and design.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
18	S&b Infrastructure, LTD	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	98 contacts →
	Exact match “S&B Infrastructure, Ltd.(S & BI) has been in existence since 1994 as part of S&B Holdings, Ltd,(one of the largest privately-owned engineering firms in the State of Texas).” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
19	Strategy Engineering And Consulting, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	79 contacts →
	Exact match “Strategy Engineering is a privately-owned technical services company located within the Energy Corridor in Houston, TX.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
20	Microseismic, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	79 contacts →
	Exact match “Specialist in Real-Time Completions Intelligence for Fracture Geometry & Efficiency \| Geohazards \| Stress Field \| CCUS \| Geothermal \| FDI \| Sinkhole Detection \| Induced Seismicity…” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
21	Lumina Geophysical	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	73 contacts →
	Exact match “Lumina is a leading geophysical services solutions and software provider, specializing in innovative tools for subsurface data analysis in the energy industry.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
22	A&s Engineers, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	72 contacts →
	Exact match “The objective of A&S is to provide municipal engineering services, with focus on water districts, municipalities, and land development.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
23	F&c Engineers	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	71 contacts →
	Exact match “F&C Engineers provides full services from concept to start up for the oil and gas upstream, midstream, and turbomachinery industries.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
24	Pinnacle Engineering	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	65 contacts →
	Exact match “Since 1993, Pinnacle has remained focused on providing practical and complete engineering services to the offshore oil and gas industry.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
25	Zadok Technologies, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 26, 2026	51-200	64 contacts →
	Exact match “Zadok Technologies – Providing Engineering And Field Services To The World Quality Companies provides engineering and field services to the world.” Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “geoscientific engineering services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 309 geoscientific engineering services based in Houston, United States

See the full list, filter by size, metro and specialty, and access 4,838 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Geoscientific engineering services based in Houston, United States at a glance

As of Oct 26, 2026

34.6%Verified-email coverage

45.2Average contacts per company

11-50Median size (employees)

Oct 26, 2026Page data refreshed

Companies by employee count

1-10

141

11-50

115

51-200

201-500

501-1,000

1,001-5,000

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 309 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 “geoscientific engineering services” 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 4,838 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 26, 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.

Geoscientific engineering services by metro in the United States

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 “geoscientific engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many geoscientific engineering services are there based in Houston, United States?

RevenueBase identified 309 company matches for geoscientific engineering services 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?

LJA 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 geoscientific engineering services?

Houston leads the United States with 309 company records, followed by New York (73) and Denver (69).

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 4,838 professional contacts with verified work emails tracked across these 309 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 26, 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.