Company lists · Data refreshed October 2026

Top 25 Refinery automation contractors based in Houston, United States

RevenueBase identified 126 company matches for refinery automation contractors associated with Houston, United States as of October 2026 and tracks 8,379 professional contacts across them, including 2,134 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for refinery automation 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 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 Oct 22, 2026 How this list was built
126Companies
8,379Contacts tracked
2,134Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest refinery automation contractors based in Houston, United States

Ranked by team size
Top 25 of 126 company matches for refinery automation contractors based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 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 matchHouston, TX, United StatesHQ recorded Oct 22, 2026201-5001,203 contacts →

Exact match

“Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026501-1,000899 contacts →

Exact match

“INTECH Automation & Intelligence is a globally renowned industrial automation & digitalization technology company.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Oct 22, 20261,001-5,000725 contacts →

Exact match

“WYATT is recognized for executing complex maintenance, outage, turnaround, and capital construction projects across the Oil, Gas & Chemical, and Power markets.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Oct 22, 20261,001-5,000621 contacts →

Exact match

“The Mundy Companies is a privately owned company headquartered in Houston, Texas with offices Pasadena, TX, Nederland, TX, and Wilmington, NC.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026501-1,000573 contacts →

Exact match

“Our expertise encompasses the full spectrum of system technologies from pneumatic - hydraulic control systems to state of the art programmable solutions to chemical injection…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026501-1,000551 contacts →

Exact match

“Ingenero's goal is to be the best process engineering firm by delivering the highest quality service and software solutions at the lowest cost.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026n/a545 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Oct 22, 20265,001-10,000447 contacts →

Exact match

“With decades of refinery, petrochemical, fertilizer and power plant experience, CAM Industrial Solutions has become the standard in heavy industrial maintenance, turnaround and…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026501-1,000282 contacts →

Exact match

“Amerapex Corporation is a technology, engineering and industrial services company based in Houston, TX with operations globally, offering technical expertise in processes and…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026201-500142 contacts →

Exact match

“VersaTech Automation Services is a 50 year old company with 500+ people and $90M+ in annual sales.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026201-500140 contacts →

Exact match

“Since 1956, CEC Energy LLC, formally Coonrod Electric Co, Inc.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026201-500139 contacts →

Exact match

“We, Pyramid E&C provide Modular, Digital and Sustainable Hydrocarbon processing solutions from last 25 years and have executed more than 700 projects worldwide.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026201-500112 contacts →

Exact match

“Relevant Solutions is the preferred provider of process equipment solutions.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Oct 22, 202611-50108 contacts →

Exact match

“We have earned a reputation as a global leader in Design/Build & Systems Integration for more than 30 years.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026201-50068 contacts →

Exact match

“At Bayou Electrical Services, we believe that great projects start with great people.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Oct 22, 202651-20055 contacts →

Exact match

“BD Energy Systems LLC located in Houston, TX, USA is a world leading engineering company operating in the Petrochemical, Fertilizer, Refining, and Gas Processing industry…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Oct 22, 202651-20053 contacts →

Exact match

“Toadfly Technologies is an innovative industrial software organization that brings solutions to your exact needs.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Oct 22, 202611-5047 contacts →

Exact match

“Our clients believe they can change the market with their idea, and they need a technology partner to come alongside them and challenge, vet, and better that idea.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Oct 22, 202611-5041 contacts →

Exact match

“Parijat Controlware Inc.(Parijat or PCI) is a controls systems integrator since 1989, has been a strong player in the controls, automation industry.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Oct 22, 202651-20040 contacts →

Exact match

“OFD is a full-service engineering contractor committed to helping our client’s complete successful offshore and onshore oil and gas projects covering both upstream, midstream and…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026n/a32 contacts →

Exact match

Recorded description not available.

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

Exact match

“Approach Controls is a top provider of reliable instrumentation, control systems, and data management.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Oct 22, 202611-5030 contacts →

Exact match

“EnerSys Corporation is an oil & gas software and services company focused on delivering operational excellence for oil & gas pipeline control rooms.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24Exact matchHouston, TX, United StatesHQ recorded Oct 22, 2026201-50024 contacts →

Exact match

“Solaris Oilfield Infrastructure, Inc.(NYSE:SOI) sets new standards for the oil and gas industry and redefines wellsite performance through game-changing technologies, automated…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Oct 22, 202651-20021 contacts →

Exact match

“TAG is a recognized leader in providing system independent, specialized technical and management services for the implementation of process control system projects in the…”

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

Showing 25 of 126 refinery automation contractors based in Houston, United States

See the full list, filter by size, metro and specialty, and access 2,134 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Refinery automation contractors based in Houston, United States at a glance

As of Oct 22, 2026
25.5%Verified-email coverage
66.5Average contacts per company
11-50Median size (employees)
Oct 22, 2026Page data refreshed

Companies by employee count

1-10
46
11-50
38
51-200
22
201-500
12
501-1,000
5
1,001-5,000
2
5,001-10,000
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 126 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 “refinery automation 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 2,134 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 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 “refinery automation contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery automation contractors are there based in Houston, United States?

RevenueBase identified 126 company matches for refinery automation 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?

Englobal 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 refinery automation contractors?

Houston leads the United States with 126 company records, followed by Tulsa (17) and Odessa (14).

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 2,134 professional contacts with verified work emails tracked across these 126 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 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 126 refinery automation contractors based in Houston, United States. Start with a free account, no credit card.

Download this list →

Related lists

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.