Company lists · Data refreshed November 2026
Top 25 Well testing downhole tool suppliers worldwide
RevenueBase identified 1,440 company matches for well testing downhole tool suppliers worldwide as of November 2026 and tracks 45,493 professional contacts across them, including 9,291 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers company matches for well testing downhole tool suppliers worldwide, 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 November 3, 2026. Country and city lists for well testing downhole tool suppliers follow the table.
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.
The 25 largest well testing downhole tool suppliers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,408 contacts → | ||||
Exact match “OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 2 | 2,119 contacts → | ||||
Exact match “For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 3 | 1,831 contacts → | ||||
Exact match “Oil States International, Inc.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 4 | 1,792 contacts → | ||||
Exact match “Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 5 | 1,223 contacts → | ||||
Exact match “Stewart & Stevenson is a leading designer, manufacturer and provider of specialized equipment and aftermarket parts and service for the oil and gas and other industries that we…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 6 | 826 contacts → | ||||
Exact match “Cactus designs, manufactures, sells and rents a range of highly-engineered wellheads and pressure control equipment.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 7 | 798 contacts → | ||||
Exact match “Wellbore Integrity Solutions provides superior technologies and global service domain expertise, enabling our customers to enhance the full lifecycle of their wells by solving…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 8 | 793 contacts → | ||||
Exact match “MB Petroleum Services is a multinational corporation providing cost-effective quality drilling, integrated well services and integrated production services worldwide with the…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 9 | 750 contacts → | ||||
Exact match “Tucker Energy Services is a service oriented and customer focused organization providing high quality products and services to our clients in the energy industry.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 10 | 649 contacts → | ||||
Exact match “Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 11 | 565 contacts → | ||||
Exact match “CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 12 | 477 contacts → | ||||
Exact match “Only Thru Tubing Solutions offers the specialized downhole equipment and services to deliver the results you need, right when you need them.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 13 | 461 contacts → | ||||
Exact match “NTS Amega Global is a market leader in repair, rental and manufacturing solutions supporting energy markets around the world.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 14 | 457 contacts → | ||||
Exact match “OFI-was founded in 1992 as an OEM for Mud Logging units / Mud logging services provider.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 15 | 414 contacts → | ||||
Exact match “Founded in 1947, Varel Energy Solutions is one of the world’s largest independent manufacturers and suppliers of downhole drilling and completions products to the energy sector.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 16 | 384 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 17 | 351 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 18 | 310 contacts → | ||||
Exact match “Sara Sae Private Limited manufactures a diverse range of oilfield equipments thru its state of art manufacturing facilities located in Dehradun, India.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 19 | 304 contacts → | ||||
Exact match “LEAM Drilling Systems, Inc.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 20 | 296 contacts → | ||||
Exact match “Since 2003, Premium Oilfield Technologies has been supplying high quality products to the oil and gas industry.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 21 | 295 contacts → | ||||
Exact match “Greene’s Energy Group offers a range of support services and products to the oil and gas industry.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 22 | 294 contacts → | ||||
Exact match “We deliver reliable, high-performance drilling & completion equipment, expert engineering support & responsive service to customers in 100+ countries.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 23 | 293 contacts → | ||||
Exact match “Strength.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 24 | 287 contacts → | ||||
Exact match “China National Logging Corporation (CNLC), a subsidiary of CNPC Services & Engineering Ltd, solely on behalf of CNPC providing well bore technical services in international…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 25 | 260 contacts → | ||||
Exact match “NOV™ IntelliServ® provides the oil and gas industry with broadband networked drillstrings and along-string evaluation that enables downhole conditions to be measured, evaluated…” Recorded in the RevenueBase company graph · Nov 3, 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 “well testing downhole tool suppliers”. 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 1,440 well testing downhole tool suppliers worldwide
See the full list, filter by size, metro and specialty, and access 9,291 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Well testing downhole tool suppliers worldwide at a glance
As of Nov 3, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for well testing downhole tool suppliers are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “well testing downhole tool suppliers” 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. 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 9,291 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 November 3, 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.
Well testing downhole tool suppliers by location
9 lists · largest firstEvery Well testing downhole tool suppliers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Well testing downhole tool suppliers based in the United States477
- Well testing downhole tool suppliers based in Canada117
- Well testing downhole tool suppliers based in the United Kingdom68
- Well testing downhole tool suppliers based in the United Arab Emirates67
- Well testing downhole tool suppliers based in India47
Cities
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 “well testing downhole tool suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many well testing downhole tool suppliers are there worldwide?
RevenueBase identified 1,440 company matches for well testing downhole tool suppliers worldwide as of November 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?
Oilserv tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most well testing downhole tool suppliers?
The United States leads with 477 companies, followed by Canada (117) and the United Kingdom (68). Every well testing downhole tool suppliers list by country and city is linked on this page.
Which city has the most well testing downhole tool suppliers?
Houston leads with 102 company records, followed by Calgary (45) and Midland (37).
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 9,291 professional contacts with verified work emails tracked across these 1,440 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 November 3, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,440 well testing downhole tool suppliers worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 well testing downhole tool suppliers worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,440 matching company records for well testing downhole tool suppliers worldwide, with 45,493 tracked contacts and 9,291 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 3, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 well testing downhole tool suppliers worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Oilservoilserv.comHQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 2,408 contacts → |
“OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Superior Energy Servicessuperiorenergy.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 2,119 contacts → |
“For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | OIL States Internationaloilstatesintl.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 1,831 contacts → |
“Oil States International, Inc.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Geolog Internationalgeolog.comHQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 1,792 contacts → |
“Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Stewart & Stevensonstewartandstevenson.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 1,223 contacts → |
“Stewart & Stevenson is a leading designer, manufacturer and provider of specialized equipment and aftermarket parts and service for the oil and gas and other industries that we…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Cactus Wellheadcactuswellhead.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 826 contacts → |
“Cactus designs, manufactures, sells and rents a range of highly-engineered wellheads and pressure control equipment.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  WIS Wellbore Integrity Solutionswellboreintegrity.comHQ: Houston, AL, United StatesReported employees: 1,001-5,000 | Houston, AL, United States | 1,001-5,000 | Exact match | 798 contacts → |
“Wellbore Integrity Solutions provides superior technologies and global service domain expertise, enabling our customers to enhance the full lifecycle of their wells by solving…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  MB Petroleum Services LLCmbpetroleum.comHQ: Muscat, OmanReported employees: 1,001-5,000 | Muscat, Oman | 1,001-5,000 | Exact match | 793 contacts → |
“MB Petroleum Services is a multinational corporation providing cost-effective quality drilling, integrated well services and integrated production services worldwide with the…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Tucker Energy Servicestuckerenergy.comHQ: Port Of Spain, Trinidad and TobagoReported employees: 1,001-5,000 | Port Of Spain, Trinidad and Tobago | 1,001-5,000 | Exact match | 750 contacts → |
“Tucker Energy Services is a service oriented and customer focused organization providing high quality products and services to our clients in the energy industry.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Worldwide Oilfield Machinewomgroup.comHQ: Houston, United StatesReported employees: 1,001-5,000 | Houston, United States | 1,001-5,000 | Exact match | 649 contacts → |
“Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Cetco Energy Servicesmineralstech.comHQ: Houston, United StatesReported employees: 501-1,000 | Houston, United States | 501-1,000 | Exact match | 565 contacts → |
“CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Thru Tubing Solutionsthrutubing.comHQ: Newcastle, AB, United StatesReported employees: 501-1,000 | Newcastle, AB, United States | 501-1,000 | Exact match | 477 contacts → |
“Only Thru Tubing Solutions offers the specialized downhole equipment and services to deliver the results you need, right when you need them.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  NTS Amega Globalntsamega.comHQ: Dubai, United Arab EmiratesReported employees: 501-1,000 | Dubai, United Arab Emirates | 501-1,000 | Exact match | 461 contacts → |
“NTS Amega Global is a market leader in repair, rental and manufacturing solutions supporting energy markets around the world.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  OIL Field Instrumentation India Pvt. LTDofiindia.comHQ: Mumbai, IndiaReported employees: 501-1,000 | Mumbai, India | 501-1,000 | Exact match | 457 contacts → |
“OFI-was founded in 1992 as an OEM for Mud Logging units / Mud logging services provider.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Varel Energy Solutionsvarel.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 414 contacts → |
“Founded in 1947, Varel Energy Solutions is one of the world’s largest independent manufacturers and suppliers of downhole drilling and completions products to the energy sector.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Express Energy Serviceseeslp.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 384 contacts → |
“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…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Knight OIL Toolske.servicesHQ: Houston, ND, United StatesReported employees: 1,001-5,000 | Houston, ND, United States | 1,001-5,000 | Exact match | 351 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 |  Sara SAE Private Limitedsarasae.comHQ: Dehradun, IndiaReported employees: 201-500 | Dehradun, India | 201-500 | Exact match | 310 contacts → |
“Sara Sae Private Limited manufactures a diverse range of oilfield equipments thru its state of art manufacturing facilities located in Dehradun, India.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Leam Drilling Servicesleam.netHQ: New Iberia, LA, United StatesReported employees: 501-1,000 | New Iberia, LA, United States | 501-1,000 | Exact match | 304 contacts → |
“LEAM Drilling Systems, Inc.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Premium Oilfield Technologiespremiumoilfield.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 296 contacts → |
“Since 2003, Premium Oilfield Technologies has been supplying high quality products to the oil and gas industry.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Greene's Energy Groupgreenesenergy.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 295 contacts → |
“Greene’s Energy Group offers a range of support services and products to the oil and gas industry.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Mccoy Globalmccoyglobal.comHQ: Edmonton, AB, CanadaReported employees: 51-200 | Edmonton, AB, Canada | 51-200 | Exact match | 294 contacts → |
“We deliver reliable, high-performance drilling & completion equipment, expert engineering support & responsive service to customers in 100+ countries.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Drilling Tools International, INCdrillingtools.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 293 contacts → |
“Strength.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | HQ: United StatesReported employees: 1,001-5,000 | United States | 1,001-5,000 | Exact match | 287 contacts → |
“China National Logging Corporation (CNLC), a subsidiary of CNPC Services & Engineering Ltd, solely on behalf of CNPC providing well bore technical services in international…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Intelliservnov.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 260 contacts → |
“NOV™ IntelliServ® provides the oil and gas industry with broadband networked drillstrings and along-string evaluation that enables downhole conditions to be measured, evaluated…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,440 company matches
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Well testing downhole tool suppliers: dataset insights
November 3, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,426 records in the displayed employee bands.
14 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,440 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 3, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Well testing downhole tool suppliers by location
9 lists · largest firstEvery Well testing downhole tool suppliers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Well testing downhole tool suppliers based in the United States477
- Well testing downhole tool suppliers based in Canada117
- Well testing downhole tool suppliers based in the United Kingdom68
- Well testing downhole tool suppliers based in the United Arab Emirates67
- Well testing downhole tool suppliers based in India47
Cities
Questions about this company list
What does Exact match mean for well testing downhole tool suppliers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many well testing downhole tool suppliers did RevenueBase find worldwide?
The saved snapshot records 1,440 matching company records, 45,493 tracked contacts and 9,291 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 3, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 well testing downhole tool suppliers worldwide. Snapshot: November 3, 2026. https://revenuebase.ai/companies/browse/well-testing-downhole-tool-suppliers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 well testing downhole tool suppliers worldwide
RevenueBase records 1,440 matching company records for well testing downhole tool suppliers worldwide, with 45,493 tracked contacts and 9,291 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 3, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 well testing downhole tool suppliers worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Oilservoilserv.com HQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 2,408 contacts → |
“OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Superior Energy Servicessuperiorenergy.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 2,119 contacts → |
“For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | OIL States Internationaloilstatesintl.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 1,831 contacts → |
“Oil States International, Inc.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Geolog Internationalgeolog.com HQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 1,792 contacts → |
“Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Stewart & Stevensonstewartandstevenson.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 1,223 contacts → |
“Stewart & Stevenson is a leading designer, manufacturer and provider of specialized equipment and aftermarket parts and service for the oil and gas and other industries that we…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Cactus Wellheadcactuswellhead.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 826 contacts → |
“Cactus designs, manufactures, sells and rents a range of highly-engineered wellheads and pressure control equipment.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | WIS Wellbore Integrity Solutionswellboreintegrity.com HQ: Houston, AL, United StatesReported employees: 1,001-5,000 | Houston, AL, United States | 1,001-5,000 | Exact match | 798 contacts → |
“Wellbore Integrity Solutions provides superior technologies and global service domain expertise, enabling our customers to enhance the full lifecycle of their wells by solving…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | MB Petroleum Services LLCmbpetroleum.com HQ: Muscat, OmanReported employees: 1,001-5,000 | Muscat, Oman | 1,001-5,000 | Exact match | 793 contacts → |
“MB Petroleum Services is a multinational corporation providing cost-effective quality drilling, integrated well services and integrated production services worldwide with the…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Tucker Energy Servicestuckerenergy.com HQ: Port Of Spain, Trinidad and TobagoReported employees: 1,001-5,000 | Port Of Spain, Trinidad and Tobago | 1,001-5,000 | Exact match | 750 contacts → |
“Tucker Energy Services is a service oriented and customer focused organization providing high quality products and services to our clients in the energy industry.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Worldwide Oilfield Machinewomgroup.com HQ: Houston, United StatesReported employees: 1,001-5,000 | Houston, United States | 1,001-5,000 | Exact match | 649 contacts → |
“Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cetco Energy Servicesmineralstech.com HQ: Houston, United StatesReported employees: 501-1,000 | Houston, United States | 501-1,000 | Exact match | 565 contacts → |
“CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Thru Tubing Solutionsthrutubing.com HQ: Newcastle, AB, United StatesReported employees: 501-1,000 | Newcastle, AB, United States | 501-1,000 | Exact match | 477 contacts → |
“Only Thru Tubing Solutions offers the specialized downhole equipment and services to deliver the results you need, right when you need them.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | NTS Amega Globalntsamega.com HQ: Dubai, United Arab EmiratesReported employees: 501-1,000 | Dubai, United Arab Emirates | 501-1,000 | Exact match | 461 contacts → |
“NTS Amega Global is a market leader in repair, rental and manufacturing solutions supporting energy markets around the world.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | OIL Field Instrumentation India Pvt. LTDofiindia.com HQ: Mumbai, IndiaReported employees: 501-1,000 | Mumbai, India | 501-1,000 | Exact match | 457 contacts → |
“OFI-was founded in 1992 as an OEM for Mud Logging units / Mud logging services provider.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Varel Energy Solutionsvarel.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 414 contacts → |
“Founded in 1947, Varel Energy Solutions is one of the world’s largest independent manufacturers and suppliers of downhole drilling and completions products to the energy sector.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Express Energy Serviceseeslp.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 384 contacts → |
“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…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Knight OIL Toolske.services HQ: Houston, ND, United StatesReported employees: 1,001-5,000 | Houston, ND, United States | 1,001-5,000 | Exact match | 351 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 | Sara SAE Private Limitedsarasae.com HQ: Dehradun, IndiaReported employees: 201-500 | Dehradun, India | 201-500 | Exact match | 310 contacts → |
“Sara Sae Private Limited manufactures a diverse range of oilfield equipments thru its state of art manufacturing facilities located in Dehradun, India.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Leam Drilling Servicesleam.net HQ: New Iberia, LA, United StatesReported employees: 501-1,000 | New Iberia, LA, United States | 501-1,000 | Exact match | 304 contacts → |
“LEAM Drilling Systems, Inc.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Premium Oilfield Technologiespremiumoilfield.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 296 contacts → |
“Since 2003, Premium Oilfield Technologies has been supplying high quality products to the oil and gas industry.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Greene's Energy Groupgreenesenergy.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 295 contacts → |
“Greene’s Energy Group offers a range of support services and products to the oil and gas industry.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Mccoy Globalmccoyglobal.com HQ: Edmonton, AB, CanadaReported employees: 51-200 | Edmonton, AB, Canada | 51-200 | Exact match | 294 contacts → |
“We deliver reliable, high-performance drilling & completion equipment, expert engineering support & responsive service to customers in 100+ countries.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Drilling Tools International, INCdrillingtools.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 293 contacts → |
“Strength.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | HQ: United StatesReported employees: 1,001-5,000 | United States | 1,001-5,000 | Exact match | 287 contacts → |
“China National Logging Corporation (CNLC), a subsidiary of CNPC Services & Engineering Ltd, solely on behalf of CNPC providing well bore technical services in international…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Intelliservnov.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 260 contacts → |
“NOV™ IntelliServ® provides the oil and gas industry with broadband networked drillstrings and along-string evaluation that enables downhole conditions to be measured, evaluated…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Well testing downhole tool suppliers: dataset insights
November 3, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,426 records in the displayed employee bands.
14 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,440 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 3, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Well testing downhole tool suppliers by location
9 lists · largest firstEvery Well testing downhole tool suppliers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Well testing downhole tool suppliers based in the United States477
- Well testing downhole tool suppliers based in Canada117
- Well testing downhole tool suppliers based in the United Kingdom68
- Well testing downhole tool suppliers based in the United Arab Emirates67
- Well testing downhole tool suppliers based in India47
Cities
Questions about this company list
What does Exact match mean for well testing downhole tool suppliers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many well testing downhole tool suppliers did RevenueBase find worldwide?
The saved snapshot records 1,440 matching company records, 45,493 tracked contacts and 9,291 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 3, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 well testing downhole tool suppliers worldwide. Snapshot: November 3, 2026. https://revenuebase.ai/companies/browse/well-testing-downhole-tool-suppliers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗