Company lists · Data refreshed October 2026
Top 25 Downhole testing services based in Houston, United States
RevenueBase identified 59 company matches for downhole testing services associated with Houston, United States as of October 2026 and tracks 3,517 professional contacts across them, including 665 with verified work emails. Across the United States, Houston is the largest hub for this category.
This list covers company matches for downhole testing services associated with Houston, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 24, 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.
The 25 largest downhole testing services based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 506 contacts → | ||||
Exact match “Ranger is one of the largest providers of high specification mobile rig well services, cased hole wireline services, and ancillary services in the U.S.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 2 | 391 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 · Oct 24, 2026 · View company records in RevenueBase | |||||
| 3 | 345 contacts → | ||||
Exact match “ADA is a global energy services company specializing in advanced drilling solutions for oil, gas, and geothermal applications.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 4 | 283 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 · Oct 24, 2026 · View company records in RevenueBase | |||||
| 5 | 137 contacts → | ||||
Exact match “Since 1989 WWT International (WWT) has been developing unique products to help operators reach farther in drilling, completion and intervention worldwide.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 6 | 89 contacts → | ||||
Exact match “Anyone can provide data.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 7 | 87 contacts → | ||||
Exact match “Upstream International provides drilling, completions/work-over, directional, MWD, safety, fluids and MPD professionals to the oil and gas industry.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 8 | 79 contacts → | ||||
Exact match “Specialist in Real-Time Completions Intelligence for Fracture Geometry & Efficiency | Geohazards | Stress Field | CCUS | Geothermal | FDI | Sinkhole Detection | Induced Seismicity…” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 9 | 78 contacts → | ||||
Exact match “Ryan Directional Services, a Nabors company, is a leading provider of Directional Drilling and Measurement While Drilling services.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 10 | 70 contacts → | ||||
Exact match “Quantum designs and deploys its own complete line of downhole technology headlined by our MWD systems: EM MWD, Pulse MWD, and our flagship Mesh MWD.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 11 | 51 contacts → | ||||
Exact match “HDD Industry Sharewell is the leading supplier of downhole drilling tools, guidance systems and services for the Horizontal Directional Drilling industry.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 12 | 35 contacts → | ||||
Exact match “Rival Downhole Tools was acquired by Stabil Drill in 2025.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 13 | 25 contacts → | ||||
Exact match “Prime Downhole Manufacturing is a precision machining and parts manufacture providing Engineering, Service, and Repair of downhole tools and petroleum industry equipment.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 14 | 19 contacts → | ||||
Exact match “ResMetrics is an oilfield services company that specializes in providing advanced reservoir diagnostics through the use of chemical tracers.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 15 | 17 contacts → | ||||
Exact match “Integrity Insitu is a North American based service company that provides downhole measurements of various rock strength and stress properties via the patented Integrity Tool.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 16 | 17 contacts → | ||||
Exact match “Absmart specializes in tracking oil, water, drill solids, and barite, beyond just whole mud, from wellbore circulation, cleanup and disposal.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 17 | 13 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 18 | 11 contacts → | ||||
Exact match “Downhole Innovations LLC specializes in downhole tool engineering, design, testing, and manufacturing.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 19 | 9 contacts → | ||||
Exact match “Innova Drilling & Intervention provides the complete solution for your drilling operations.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 20 | 8 contacts → | ||||
Exact match “Flare Energy Services is a Texas-based, privately held oil and gas service provider specializing in completion, flowback, and well testing services.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 21 | 7 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 22 | 5 contacts → | ||||
Exact match “THE CAVINS CORPORATION is an oil & energy service company based out of Houston Texas.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 23 | 5 contacts → | ||||
Exact match “Since 1983, we have been setting the global standard in innovative equipment for downhole tool service and testing.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 24 | 4 contacts → | ||||
Exact match “Since 2009 Oilwell Solutions has given downhole tool service and equipment groups a competitive advantage by providing high performance, long life, EM-MWD Gap / Antenna Subs.” Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase | |||||
| 25 | 1 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 24, 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 “downhole testing services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 59 downhole testing services based in Houston, United States
See the full list, filter by size, metro and specialty, and access 665 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Downhole testing services based in Houston, United States at a glance
As of Oct 24, 2026Companies by employee count
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 59 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 “downhole testing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 665 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 24, 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.
Downhole testing services by metro in the United States
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “downhole testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many downhole testing services are there based in Houston, United States?
RevenueBase identified 59 company matches for downhole testing services associated with Houston, United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Ranger Energy Services, LLC 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 downhole testing services?
Houston leads the United States with 59 company records, followed by Midland (32) and Conroe (8).
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 665 professional contacts with verified work emails tracked across these 59 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 24, 2026.
Ready to reach these companies? Verified emails and direct dials for all 59 downhole testing services based in Houston, United States. Start with a free account, no credit card.
Download this list →Related lists
Downhole testing services by geography
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Downhole testing services based in Calgary, Canada
- Downhole testing services based in Midland, United States
- Downhole testing services based in Canada
- Downhole testing services based in the United Kingdom
- Downhole testing services based in the United States
- 1099 accounting services based in Houston, United States
Company intelligence · public preview
Top 25 downhole testing services based in Houston, United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 59 matching company records for downhole testing services based in Houston, United States, with 3,517 tracked contacts and 665 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: October 24, 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 downhole testing services based in Houston, United States
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 |  Ranger Energy Services, LLCrangerenergy.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 506 contacts → |
“Ranger is one of the largest providers of high specification mobile rig well services, cased hole wireline services, and ancillary services in the U.S.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Express Energy Serviceseeslp.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 391 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 · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  AIR Drilling Associatesairdrilling.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 345 contacts → |
“ADA is a global energy services company specializing in advanced drilling solutions for oil, gas, and geothermal applications.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Intelliservnov.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 283 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 · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  WWT Internationalwwtco.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 137 contacts → |
“Since 1989 WWT International (WWT) has been developing unique products to help operators reach farther in drilling, completion and intervention worldwide.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Datalogdataloggs.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 89 contacts → |
“Anyone can provide data.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Upstream International LLCupstreaminternational.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 87 contacts → |
“Upstream International provides drilling, completions/work-over, directional, MWD, safety, fluids and MPD professionals to the oil and gas industry.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Microseismic, INCmicroseismic.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 79 contacts → |
“Specialist in Real-Time Completions Intelligence for Fracture Geometry & Efficiency | Geohazards | Stress Field | CCUS | Geothermal | FDI | Sinkhole Detection | Induced Seismicity…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Ryan Directional Servicesryandirectional.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 78 contacts → |
“Ryan Directional Services, a Nabors company, is a leading provider of Directional Drilling and Measurement While Drilling services.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Quantum Energy Technologiesquantumofs.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 70 contacts → |
“Quantum designs and deploys its own complete line of downhole technology headlined by our MWD systems: EM MWD, Pulse MWD, and our flagship Mesh MWD.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Sharewell HDDsharewellhdd.comHQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 51 contacts → |
“HDD Industry Sharewell is the leading supplier of downhole drilling tools, guidance systems and services for the Horizontal Directional Drilling industry.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Rival Downhole Toolsrivaldt.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 35 contacts → |
“Rival Downhole Tools was acquired by Stabil Drill in 2025.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Prime Downhole Manufacturing LLCprimedownhole.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 25 contacts → |
“Prime Downhole Manufacturing is a precision machining and parts manufacture providing Engineering, Service, and Repair of downhole tools and petroleum industry equipment.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Resmetricsresmetrics.comHQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 19 contacts → |
“ResMetrics is an oilfield services company that specializes in providing advanced reservoir diagnostics through the use of chemical tracers.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Integrity Insituintegrityinsitu.comHQ: Houston, TX, United StatesReported employees: 1-10 | Houston, TX, United States | 1-10 | Exact match | 17 contacts → |
“Integrity Insitu is a North American based service company that provides downhole measurements of various rock strength and stress properties via the patented Integrity Tool.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Absmartabsmartusa.comHQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 17 contacts → |
“Absmart specializes in tracking oil, water, drill solids, and barite, beyond just whole mud, from wellbore circulation, cleanup and disposal.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Compass Directional Guidance, INCcompass-mwd.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 | Downhole Innovations LLCdownholeinnovations.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 11 contacts → |
“Downhole Innovations LLC specializes in downhole tool engineering, design, testing, and manufacturing.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Innova Drilling & Interventioninnova-drilling.comHQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 9 contacts → |
“Innova Drilling & Intervention provides the complete solution for your drilling operations.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Flare Energy Services, LLCflareenergyservices.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 8 contacts → |
“Flare Energy Services is a Texas-based, privately held oil and gas service provider specializing in completion, flowback, and well testing services.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Weatherford Completion Systemsweatherford.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 7 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | The Cavins Corporationcavinscorp.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 5 contacts → |
“THE CAVINS CORPORATION is an oil & energy service company based out of Houston Texas.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | JW Machine Systemsjwmachinesystems.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 5 contacts → |
“Since 1983, we have been setting the global standard in innovative equipment for downhole tool service and testing.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Oilwell Solutionsoilwellsolutions.com HQ: Houston, TX, United StatesReported employees: 1-10 | Houston, TX, United States | 1-10 | Exact match | 4 contacts → |
“Since 2009 Oilwell Solutions has given downhole tool service and equipment groups a competitive advantage by providing high performance, long life, EM-MWD Gap / Antenna Subs.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Kswc - Hercon INCkswchercon.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 59 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Downhole testing services: dataset insights
October 24, 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
59 records in the displayed employee bands.
0 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 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 59 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: October 24, 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 ↗
Downhole testing services by metro in the United States
Questions about this company list
What does Exact match mean for downhole testing services?
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 downhole testing services did RevenueBase find based in Houston, United States?
The saved snapshot records 59 matching company records, 3,517 tracked contacts and 665 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: October 24, 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.
Related lists
Downhole testing services by geography
Cite this list
RevenueBase Data Team. Top 25 downhole testing services based in Houston, United States. Snapshot: October 24, 2026. https://revenuebase.ai/companies/downhole-testing-services/united-states/houston.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Downhole testing services based in Calgary, Canada
- Downhole testing services based in Midland, United States
- Downhole testing services based in Canada
- Downhole testing services based in the United Kingdom
- Downhole testing services based in the United States
- 1099 accounting services based in Houston, United States
Company intelligence · public preview
Top 25 downhole testing services based in Houston, United States
RevenueBase records 59 matching company records for downhole testing services based in Houston, United States, with 3,517 tracked contacts and 665 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: October 24, 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 downhole testing services based in Houston, United States
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 | Ranger Energy Services, LLCrangerenergy.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 506 contacts → |
“Ranger is one of the largest providers of high specification mobile rig well services, cased hole wireline services, and ancillary services in the U.S.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Express Energy Serviceseeslp.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 391 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 · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | AIR Drilling Associatesairdrilling.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 345 contacts → |
“ADA is a global energy services company specializing in advanced drilling solutions for oil, gas, and geothermal applications.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Intelliservnov.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 283 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 · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | WWT Internationalwwtco.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 137 contacts → |
“Since 1989 WWT International (WWT) has been developing unique products to help operators reach farther in drilling, completion and intervention worldwide.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Datalogdataloggs.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 89 contacts → |
“Anyone can provide data.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Upstream International LLCupstreaminternational.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 87 contacts → |
“Upstream International provides drilling, completions/work-over, directional, MWD, safety, fluids and MPD professionals to the oil and gas industry.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Microseismic, INCmicroseismic.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 79 contacts → |
“Specialist in Real-Time Completions Intelligence for Fracture Geometry & Efficiency | Geohazards | Stress Field | CCUS | Geothermal | FDI | Sinkhole Detection | Induced Seismicity…” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Ryan Directional Servicesryandirectional.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 78 contacts → |
“Ryan Directional Services, a Nabors company, is a leading provider of Directional Drilling and Measurement While Drilling services.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Quantum Energy Technologiesquantumofs.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 70 contacts → |
“Quantum designs and deploys its own complete line of downhole technology headlined by our MWD systems: EM MWD, Pulse MWD, and our flagship Mesh MWD.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Sharewell HDDsharewellhdd.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 51 contacts → |
“HDD Industry Sharewell is the leading supplier of downhole drilling tools, guidance systems and services for the Horizontal Directional Drilling industry.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Rival Downhole Toolsrivaldt.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 35 contacts → |
“Rival Downhole Tools was acquired by Stabil Drill in 2025.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Prime Downhole Manufacturing LLCprimedownhole.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 25 contacts → |
“Prime Downhole Manufacturing is a precision machining and parts manufacture providing Engineering, Service, and Repair of downhole tools and petroleum industry equipment.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Resmetricsresmetrics.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 19 contacts → |
“ResMetrics is an oilfield services company that specializes in providing advanced reservoir diagnostics through the use of chemical tracers.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Integrity Insituintegrityinsitu.com HQ: Houston, TX, United StatesReported employees: 1-10 | Houston, TX, United States | 1-10 | Exact match | 17 contacts → |
“Integrity Insitu is a North American based service company that provides downhole measurements of various rock strength and stress properties via the patented Integrity Tool.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Absmartabsmartusa.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 17 contacts → |
“Absmart specializes in tracking oil, water, drill solids, and barite, beyond just whole mud, from wellbore circulation, cleanup and disposal.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Compass Directional Guidance, INCcompass-mwd.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 13 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 | Downhole Innovations LLCdownholeinnovations.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 11 contacts → |
“Downhole Innovations LLC specializes in downhole tool engineering, design, testing, and manufacturing.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Innova Drilling & Interventioninnova-drilling.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 9 contacts → |
“Innova Drilling & Intervention provides the complete solution for your drilling operations.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Flare Energy Services, LLCflareenergyservices.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 8 contacts → |
“Flare Energy Services is a Texas-based, privately held oil and gas service provider specializing in completion, flowback, and well testing services.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Weatherford Completion Systemsweatherford.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 7 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | The Cavins Corporationcavinscorp.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 5 contacts → |
“THE CAVINS CORPORATION is an oil & energy service company based out of Houston Texas.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | JW Machine Systemsjwmachinesystems.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 5 contacts → |
“Since 1983, we have been setting the global standard in innovative equipment for downhole tool service and testing.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Oilwell Solutionsoilwellsolutions.com HQ: Houston, TX, United StatesReported employees: 1-10 | Houston, TX, United States | 1-10 | Exact match | 4 contacts → |
“Since 2009 Oilwell Solutions has given downhole tool service and equipment groups a competitive advantage by providing high performance, long life, EM-MWD Gap / Antenna Subs.” Recorded description excerpt · October 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Kswc - Hercon INCkswchercon.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 1 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 59 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Downhole testing services: dataset insights
October 24, 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
59 records in the displayed employee bands.
0 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 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 59 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: October 24, 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 ↗
Downhole testing services by metro in the United States
Questions about this company list
What does Exact match mean for downhole testing services?
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 downhole testing services did RevenueBase find based in Houston, United States?
The saved snapshot records 59 matching company records, 3,517 tracked contacts and 665 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: October 24, 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.
Related lists
Downhole testing services by geography
Cite this list
RevenueBase Data Team. Top 25 downhole testing services based in Houston, United States. Snapshot: October 24, 2026. https://revenuebase.ai/companies/downhole-testing-services/united-states/houston.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Downhole testing services based in Calgary, Canada
- Downhole testing services based in Midland, United States
- Downhole testing services based in Canada
- Downhole testing services based in the United Kingdom
- Downhole testing services based in the United States
- 1099 accounting services based in Houston, United States