Company lists · Data refreshed September 2026
Top 25 Mud engineering services worldwide
RevenueBase identified 362 mud engineering services worldwide as of September 2026 and tracks 8,927 professional contacts across them, including 1,853 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.
This list covers mud engineering services worldwide, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026. Country and city lists for mud engineering services follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest mud engineering services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,244 contacts → | ||||
Indirect evidence “Newpark Fluids Systems is the world’s leading pure-play oil & gas and geothermal fluid solutions provider.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 2 | 445 contacts → | ||||
Partial evidence “OFI-was founded in 1992 as an OEM for Mud Logging units / Mud logging services provider.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 3 | 361 contacts → | ||||
Indirect evidence “AES Drilling Fluids is prepared to successfully deliver on any challenging project from the well site to the customer's office.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 4 | 291 contacts → | ||||
Indirect evidence “LEAM Drilling Systems, Inc.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 5 | 196 contacts → | ||||
Indirect evidence “BOS Solutions (BOS) is a full service provider of solutions for drilling fluids treatment and recovery.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 6 | 153 contacts → | ||||
Indirect evidence “Summit, An Earth Services Company, is a professional environmental consulting and services company serving the oil and gas, energy and utilities, resources and mining and…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 7 | 151 contacts → | ||||
Indirect evidence “Now hiring in all 8 districts.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 8 | 144 contacts → | ||||
Indirect evidence “OREN was established in the year 1990 in Chennai, India and currently boasts of its presence in UAE, China, Saudi Arabia, Egypt, Iraq, Malaysia, North & South America apart from…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 9 | 134 contacts → | ||||
Indirect evidence “Nomac Drilling is now Patterson-UTI.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 10 | 127 contacts → | ||||
Indirect evidence “The Geotech Drilling Group of Companies is a team focused on continually implementing the most technologically advanced drilling techniques in order to increase the efficiency and…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 11 | 91 contacts → | ||||
Partial evidence “Stratagraph is a pioneer in the mud logging industry.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 12 | 91 contacts → | ||||
Partial evidence “Plaster & Wald Consulting Corp has provided engineering and consulting services to the oil & gas industry since 1997.Our supervisors provide technical expertise in well planning…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 13 | 87 contacts → | ||||
Indirect evidence “Upstream International provides drilling, completions/work-over, directional, MWD, safety, fluids and MPD professionals to the oil and gas industry.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 14 | 85 contacts → | ||||
Indirect evidence “K&M Technology Group was founded in 1988 and has been involved in extended reach and horizontal drilling since its inception.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 15 | 83 contacts → | ||||
Indirect evidence “Valence Drilling Fluids, LLC began operations on October 1, 2017 in the Mid-Continent.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 16 | 76 contacts → | ||||
Indirect evidence “March 21, 2023, marked an important milestone for Stokes & Spiehler.a half century serving the oil & gas industry!” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 17 | 67 contacts → | ||||
Indirect evidence “Providing premier drilling fluids products to our customers supported by quality service and technical expertise.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 18 | 67 contacts → | ||||
Indirect evidence “Tony Farish founded the company in 1980, and was joined the next year by his brother, Ronnie.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 19 | 65 contacts → | ||||
Partial evidence “GEO Drilling Fluids Mission is to provide the most cost effective source for drilling fluids and engineering applications in each of its operating areas.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 20 | 59 contacts → | ||||
Indirect evidence “Terra Guidance provides geological analysis remotely, onsite, and in-house.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 21 | 58 contacts → | ||||
Partial evidence “With roots going back to 1976, Earth Drilling brings unmatched expertise to a full range of disciplines, including environmental and geotechnical engineering, oil sands, mining…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 22 | 57 contacts → | ||||
Indirect evidence “We provide drilling fluids and solids separation services, including dewatering, desludging, and water remediation to the environmental and energy industries across the United…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 23 | 57 contacts → | ||||
Indirect evidence “At DrilTech our goal is simple; to provide the most reliable Directional services while providing the best value for the products and services we offer.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 24 | 51 contacts → | ||||
Indirect evidence “We are a drilling fluids manufacturer company (service-provider to the drilling companies).” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 25 | 50 contacts → | ||||
Indirect evidence “Strength you can build on.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: mud engineering services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names mud engineering services.
- Partial evidence
- Its own public description names part of mud engineering services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name mud engineering services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 362 mud engineering services worldwide
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Mud engineering services worldwide at a glance
As of Sep 17, 2026Companies by employee count
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 mud engineering services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- 4 countries, largest first: the United States, Canada, India, Australia. Country and city lists for mud engineering services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “mud engineering services”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names mud engineering services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among mud engineering services, and records with no verified work email.
- 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 its RevenueBase Smart Search 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, 1,853 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 17, 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.
Mud engineering services by location
4 lists · largest firstEvery Mud engineering services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names mud engineering services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many mud engineering services are there worldwide?
RevenueBase identified 362 mud engineering services worldwide 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?
Newpark, headquartered in Katy, tops this list with the largest team on record.
Which country has the most mud engineering services?
The United States leads with 242 companies, followed by Canada (56) and India (36). Every mud engineering services list by country and city is linked on this page.
Which city has the most mud engineering services?
Houston leads with 40 headquartered companies, followed by Calgary (29) and Midland (19).
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 1,853 verified decision-maker contacts tracked across these 362 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 17, 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 Smart Search, 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.