Company lists · Data refreshed September 2026

Top 25 Oilfield monitoring software companies based in Houston, United States

Name: Oilfield monitoring software companies based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 327 companies tracked

RevenueBase identified 327 oilfield monitoring software companies headquartered in Houston, United States as of September 2026 and tracks 191,963 professional contacts across them, including 57,553 with verified work emails. Houston is the largest hub.

This list covers oilfield monitoring software companies headquartered in Houston, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

327Companies

191,963Contacts tracked

57,553Verified emails

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The 25 largest oilfield monitoring software companies based in Houston, United States

Ranked by team size

Top 25 of 327 oilfield monitoring software companies based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names oilfield monitoring software companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	SLBIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	10001+	76,561
	“SLB is a global technology company that has driven energy innovation for more than a century.” Source: company website · checked Sep 5, 2026
2	HalliburtonIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	10001+	53,380
	“We collaborate and engineer solutions to maximize asset value for our customers.” Source: company website · checked Sep 5, 2026
3	NOVIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	10001+	29,577
	“NOV delivers technology-driven solutions to empower the global energy industry.” Source: company website · checked Sep 5, 2026
4	Nabors IndustriesIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	10001+	5,865
	“Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: company website · checked Sep 5, 2026
5	FMC TechnologiesIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	10001+	4,749
	“FMC Technologies is now TechnipFMC.” Source: company website · checked Sep 5, 2026
6	KEY Energy ServicesIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,755
	“Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Source: company website · checked Sep 5, 2026
7	Superior Energy ServicesPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,938
	“For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…” Source: company website · checked Sep 5, 2026
8	Quorum SoftwarePartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,563
	“Quorum Software is a leading provider of energy software worldwide powering growth and profitability for energy businesses by connecting people, workflows, and systems with…” Source: company website · checked Sep 5, 2026
9	Dril-QuipIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,387
	“Dril-Quip is part of Innovex, a unique energy industrial platform.” Source: company website · checked Sep 5, 2026
10	KLX Energy ServicesPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	857
	“KLX Energy Services provides more than 100 mission-critical oilfield services, tools, technologies and equipment to some of the industry’s leading operators.” Source: company website · checked Sep 5, 2026
11	LMKRIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	777
	“Founded in 1994 and built on a strong geoscience and data management footprint, LMKR has evolved into a premier technology company expanding its reach to Clean Energy…” Source: company website · checked Sep 5, 2026
12	Cactus WellheadIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	703
	“Cactus designs, manufactures, sells and rents a range of highly-engineered wellheads and pressure control equipment.” Source: company website · checked Sep 5, 2026
13	Worldwide Oilfield MachinePartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	635
	“Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Source: company website · checked Sep 5, 2026
14	ION GEOIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	583
	“ION commenced the voluntary Chapter 11 process with lender support and DIP financing in April 2022.” Source: company website · checked Sep 5, 2026
15	Cetco Energy ServicesIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	499
	“CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.” Source: company website · checked Sep 5, 2026
16	Express Energy ServicesPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	379
	“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…” Source: company website · checked Sep 5, 2026
17	NCS MultistageIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	301
	“Since our founding in 2006, NCS Multistage has grown to be a leading provider of engineered products and support services for oil and natural gas wells around the world.” Source: company website · checked Sep 5, 2026
18	Greene's Energy GroupIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	285
	“Greene’s Energy Group offers a range of support services and products to the oil and gas industry.” Source: company website · checked Sep 5, 2026
19	Rock Flow DynamicsIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	263
	“New technologies developed by the research and product development teams of Rock Flow Dynamics are integrated into the company’s flagship product – tNavigator.” Source: company website · checked Sep 5, 2026
20	Flotek Industries, INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	238
	Source: company website · checked Sep 5, 2026
21	Yellowjacket Oilfield ServicesPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	223
	“Yellowjacket Oilfield Services offers cost-effective solutions by leveraging state of the art equipment & technology along with superior personnel.” Source: company website · checked Sep 5, 2026
22	Tally Energy ServicesIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	205
	“Tally Energy Services is a private-equity backed company serving the global energy industry.” Source: company website · checked Sep 5, 2026
23	ROGIIIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	174
	“ROGII is the leading technology provider for upstream Oil & Gas providing solutions for geoscience, drilling, and completions.” Source: company website · checked Sep 5, 2026
24	ESG SolutionsPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	169
	“ESG Solutions is a world leader in passive microseismic monitoring.” Source: company website · checked Sep 5, 2026
25	WWT InternationalIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	138
	“Since 1989 WWT International (WWT) has been developing unique products to help operators reach farther in drilling, completion and intervention worldwide.” Source: company website · checked Sep 5, 2026

Showing 25 of 327 oilfield monitoring software companies based in Houston, United States

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Oilfield monitoring software companies based in Houston, United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

HoustonLargest hub · 327 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

128

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 327 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among oilfield monitoring software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

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: Companies headquartered in Houston, United States whose own description of what they do matches “oilfield monitoring software companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among oilfield monitoring software companies, and records with no verified work email. Companies headquartered outside Houston are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 57,553 across the full list. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Oilfield monitoring software companies by metro in the United States

Oilfield monitoring software companies in Houston327
Oilfield monitoring software companies in Midland56
Oilfield monitoring software companies in Oklahoma City29
Oilfield monitoring software companies in Austin28
Oilfield monitoring software companies in Denver27

Frequently asked

How many oilfield monitoring software companies are there based in Houston, United States?

RevenueBase identified 327 oilfield monitoring software companies headquartered in Houston, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

SLB, headquartered in Houston, tops this list with the largest team on record.

Which city has the most oilfield monitoring software companies?

Houston leads with 327 headquartered companies, followed by Midland (56) and Oklahoma City (29).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 57,553 verified decision-maker contacts tracked across these 327 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 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.