Company lists · Data refreshed November 2026
Top 25 Open hole completion services worldwide
RevenueBase identified 266 company matches for open hole completion services worldwide as of November 2026 and tracks 15,086 professional contacts across them, including 4,649 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers company matches for open hole completion services 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 6, 2026. Country and city lists for open hole completion services 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 open hole completion services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,552 contacts → | ||||
Exact match “Patterson-UTI is a leading provider of drilling and completion services to oil and natural gas exploration and production companies in the United States and other select…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 1,131 contacts → | ||||
Exact match “NexTier is a leading provider of integrated completions focused on the most demanding land basins in the US.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 776 contacts → | ||||
Exact match “FTS International is one of the largest well completion companies in North America.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 773 contacts → | ||||
Exact match “With a culture built on high performance and flawless execution, Nine Energy Service is a unique kind of oilfield services company, offering industry-shaping completion solutions…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 533 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 454 contacts → | ||||
Exact match “GR Energy Services is a completion solutions company committed to lowering oil and gas company operational risk and total cost of operations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 436 contacts → | ||||
Exact match “Established in 2008, Deep Well Services (DWS) is an oilfield services company specializing in the most complex and difficult types of well work utilizing hydraulic completion…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 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 6, 2026 · View company records in RevenueBase | |||||
| 9 | 258 contacts → | ||||
Exact match “One X: A Completions Partner, formerly Covenant Testing Technologies, is a leading provider of comprehensive completion services in the oil and gas industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 235 contacts → | ||||
Exact match “Special Oilfield Services (SOS) was established on the 10th of March in 1986 as a Joint Venture between Mohsin Haider Darwish LLC (MHD), one of the largest and oldest business…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 190 contacts → | ||||
Exact match “Reservoir Group is a world-class niche oilfield services company that has been addressing customer challenges for more than 70 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 188 contacts → | ||||
Exact match “GEODynamics creates and delivers downhole solutions that enable unsurpassed oil and gas well economics, performance, and lifespan.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 171 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 155 contacts → | ||||
Exact match “A Oilequip Produtos e Serviços Ltda.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 145 contacts → | ||||
Exact match “Simplified •Sustainable Approach to Wireline.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 138 contacts → | ||||
Exact match “TOP DRILLING COMPANY, is a company dedicated to oil well drilling, completion and Workover, whose corporative commitment aims at excellence in its operational and management…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 134 contacts → | ||||
Exact match “At Reach Wireline, we provide more than wireline services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 108 contacts → | ||||
Exact match “Conquest Completion Services is the leading coil tubing and completion’s service provider in the Permian Basin.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 96 contacts → | ||||
Exact match “Completion Oil Tools is an eminent in Downhole Tools.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 88 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 81 contacts → | ||||
Exact match “American Well Services is located in Midland, TX and provides well services rigs for the purpose of workover or completion operations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 77 contacts → | ||||
Exact match “Peak Completions is a leading oil and gas down hole technology provider that offers in-house engineering, manufacturing, and dedicated service to operators around the globe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 73 contacts → | ||||
Exact match “Liberty is a leading North American oilfield services firm that offers one of the most innovative suites of completion services and technologies to onshore oil and natural gas…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 69 contacts → | ||||
Exact match “C&J Well Services, LLC is focused on downhole oil well services including drilling and workover rig operations, well plug and abandonment and well stimulation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 69 contacts → | ||||
Exact match “Servicios de Perforación, Terminación y Reparación de pozos Petroleros Terrestres y Geotérmicos.” Recorded in the RevenueBase company graph · Nov 6, 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 “open hole completion 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 266 open hole completion services worldwide
See the full list, filter by size, metro and specialty, and access 4,649 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Open hole completion services worldwide at a glance
As of Nov 6, 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 open hole completion services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “open hole completion 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. 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 4,649 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 6, 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.
Open hole completion services by location
2 lists · largest firstEvery Open hole completion services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase 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 “open hole completion services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many open hole completion services are there worldwide?
RevenueBase identified 266 company matches for open hole completion services 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?
Patterson-Uti tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most open hole completion services?
The United States leads with 114 companies, followed by Canada (34). Every open hole completion services list by country and city is linked on this page.
Which city has the most open hole completion services?
Houston leads with 14 company records, followed by Midland (14) and Calgary (13).
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 4,649 professional contacts with verified work emails tracked across these 266 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 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 266 open hole completion services worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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 open hole completion services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 266 matching company records for open hole completion services worldwide, with 15,086 tracked contacts and 4,649 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 6, 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 open hole completion services 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 |  Patterson-Utipatenergy.comHQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 2,552 contacts → |
“Patterson-UTI is a leading provider of drilling and completion services to oil and natural gas exploration and production companies in the United States and other select…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  C&j Energy Servicesnextierofs.comHQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 1,131 contacts → |
“NexTier is a leading provider of integrated completions focused on the most demanding land basins in the US.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  FTS Internationalftsi.comHQ: Fort Worth, TX, United StatesReported employees: 1,001-5,000 | Fort Worth, TX, United States | 1,001-5,000 | Exact match | 776 contacts → |
“FTS International is one of the largest well completion companies in North America.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Nine Energy Servicenineenergyservice.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 773 contacts → |
“With a culture built on high performance and flawless execution, Nine Energy Service is a unique kind of oilfield services company, offering industry-shaping completion solutions…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Ranger Energy Services, LLCrangerenergy.comHQ: Houston, ND, United StatesReported employees: 1,001-5,000 | Houston, ND, United States | 1,001-5,000 | Exact match | 533 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  GR Energy Servicesgrenergyservices.comHQ: Sugar Land, TX, United StatesReported employees: 501-1,000 | Sugar Land, TX, United States | 501-1,000 | Exact match | 454 contacts → |
“GR Energy Services is a completion solutions company committed to lowering oil and gas company operational risk and total cost of operations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Deep Well Servicesdeepwellservices.comHQ: Zelienople, TX, United StatesReported employees: 501-1,000 | Zelienople, TX, United States | 501-1,000 | Exact match | 436 contacts → |
“Established in 2008, Deep Well Services (DWS) is an oilfield services company specializing in the most complex and difficult types of well work utilizing hydraulic completion…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  ONE X A Completions Partneronexcp.comHQ: The Woodlands, LA, United StatesReported employees: 501-1,000 | The Woodlands, LA, United States | 501-1,000 | Exact match | 258 contacts → |
“One X: A Completions Partner, formerly Covenant Testing Technologies, is a leading provider of comprehensive completion services in the oil and gas industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Special Oilfield Services Co. LLCspecialoilfield.comHQ: Muscat, OmanReported employees: 501-1,000 | Muscat, Oman | 501-1,000 | Exact match | 235 contacts → |
“Special Oilfield Services (SOS) was established on the 10th of March in 1986 as a Joint Venture between Mohsin Haider Darwish LLC (MHD), one of the largest and oldest business…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Reservoir Groupreservoirgroup.comHQ: Stafford, United StatesReported employees: 201-500 | Stafford, United States | 201-500 | Exact match | 190 contacts → |
“Reservoir Group is a world-class niche oilfield services company that has been addressing customer challenges for more than 70 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Geodynamics, INCperf.comHQ: Millsap, TX, United StatesReported employees: 201-500 | Millsap, TX, United States | 201-500 | Exact match | 188 contacts → |
“GEODynamics creates and delivers downhole solutions that enable unsurpassed oil and gas well economics, performance, and lifespan.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: Edmonton, CanadaReported employees: 201-500 | Edmonton, Canada | 201-500 | Exact match | 171 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 |  Oilequipoilequip.com.brHQ: Rio De Janeiro, BrazilReported employees: 201-500 | Rio De Janeiro, Brazil | 201-500 | Exact match | 155 contacts → |
“A Oilequip Produtos e Serviços Ltda.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Pintail Completionspintailcompletions.comHQ: Midland, TX, United StatesReported employees: 51-200 | Midland, TX, United States | 51-200 | Exact match | 145 contacts → |
“Simplified •Sustainable Approach to Wireline.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  TOP Drilling Companytopdco.comHQ: Bogotá, ColombiaReported employees: 201-500 | Bogotá, Colombia | 201-500 | Exact match | 138 contacts → |
“TOP DRILLING COMPANY, is a company dedicated to oil well drilling, completion and Workover, whose corporative commitment aims at excellence in its operational and management…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Reach Wirelinereachwireline.comHQ: Jacksboro, TX, United StatesReported employees: 201-500 | Jacksboro, TX, United States | 201-500 | Exact match | 134 contacts → |
“At Reach Wireline, we provide more than wireline services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Conquest Completion Services, LLCconquestllc.comHQ: Shreveport, TX, United StatesReported employees: 201-500 | Shreveport, TX, United States | 201-500 | Exact match | 108 contacts → |
“Conquest Completion Services is the leading coil tubing and completion’s service provider in the Permian Basin.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Completion OIL Tools Private Limitedcompletionoiltools.comHQ: Bhiwadi, IndiaReported employees: 201-500 | Bhiwadi, India | 201-500 | Exact match | 96 contacts → |
“Completion Oil Tools is an eminent in Downhole Tools.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Fortis Energy Services, INCfortisenergyservices.comHQ: Troy, ND, United StatesReported employees: 51-200 | Troy, ND, United States | 51-200 | Exact match | 88 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 |  American Well Servicesamericanwellservices.netHQ: Midland, TX, United StatesReported employees: 201-500 | Midland, TX, United States | 201-500 | Exact match | 81 contacts → |
“American Well Services is located in Midland, TX and provides well services rigs for the purpose of workover or completion operations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Peak Completionspeakcompletions.comHQ: Midland, TX, United StatesReported employees: 51-200 | Midland, TX, United States | 51-200 | Exact match | 77 contacts → |
“Peak Completions is a leading oil and gas down hole technology provider that offers in-house engineering, manufacturing, and dedicated service to operators around the globe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Liberty Energy - Canadalibertyenergy.comHQ: Calgary, AB, CanadaReported employees: 1,001-5,000 | Calgary, AB, Canada | 1,001-5,000 | Exact match | 73 contacts → |
“Liberty is a leading North American oilfield services firm that offers one of the most innovative suites of completion services and technologies to onshore oil and natural gas…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  C&j Well Services, LLCcjws.comHQ: Bakersfield, CA, United StatesReported employees: 501-1,000 | Bakersfield, CA, United States | 501-1,000 | Exact match | 69 contacts → |
“C&J Well Services, LLC is focused on downhole oil well services including drilling and workover rig operations, well plug and abandonment and well stimulation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Servicios Petroleros Olimpiaspolimpia.mx HQ: MexicoReported employees: 51-200 | Mexico | 51-200 | Exact match | 69 contacts → |
“Servicios de Perforación, Terminación y Reparación de pozos Petroleros Terrestres y Geotérmicos.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 266 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Open hole completion services: dataset insights
November 6, 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
266 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 country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 266 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 6, 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 ↗
Open hole completion services by location
2 lists · largest firstEvery Open hole completion services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for open hole completion 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 open hole completion services did RevenueBase find worldwide?
The saved snapshot records 266 matching company records, 15,086 tracked contacts and 4,649 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 6, 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
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 open hole completion services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/open-hole-completion-services.
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 open hole completion services worldwide
RevenueBase records 266 matching company records for open hole completion services worldwide, with 15,086 tracked contacts and 4,649 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 6, 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 open hole completion services 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 | Patterson-Utipatenergy.com HQ: Houston, TX, United StatesReported employees: 10001+ | Houston, TX, United States | 10001+ | Exact match | 2,552 contacts → |
“Patterson-UTI is a leading provider of drilling and completion services to oil and natural gas exploration and production companies in the United States and other select…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | C&j Energy Servicesnextierofs.com HQ: Houston, TX, United StatesReported employees: 5,001-10,000 | Houston, TX, United States | 5,001-10,000 | Exact match | 1,131 contacts → |
“NexTier is a leading provider of integrated completions focused on the most demanding land basins in the US.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | FTS Internationalftsi.com HQ: Fort Worth, TX, United StatesReported employees: 1,001-5,000 | Fort Worth, TX, United States | 1,001-5,000 | Exact match | 776 contacts → |
“FTS International is one of the largest well completion companies in North America.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Nine Energy Servicenineenergyservice.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 773 contacts → |
“With a culture built on high performance and flawless execution, Nine Energy Service is a unique kind of oilfield services company, offering industry-shaping completion solutions…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Ranger Energy Services, LLCrangerenergy.com HQ: Houston, ND, United StatesReported employees: 1,001-5,000 | Houston, ND, United States | 1,001-5,000 | Exact match | 533 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | GR Energy Servicesgrenergyservices.com HQ: Sugar Land, TX, United StatesReported employees: 501-1,000 | Sugar Land, TX, United States | 501-1,000 | Exact match | 454 contacts → |
“GR Energy Services is a completion solutions company committed to lowering oil and gas company operational risk and total cost of operations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Deep Well Servicesdeepwellservices.com HQ: Zelienople, TX, United StatesReported employees: 501-1,000 | Zelienople, TX, United States | 501-1,000 | Exact match | 436 contacts → |
“Established in 2008, Deep Well Services (DWS) is an oilfield services company specializing in the most complex and difficult types of well work utilizing hydraulic completion…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | 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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | ONE X A Completions Partneronexcp.com HQ: The Woodlands, LA, United StatesReported employees: 501-1,000 | The Woodlands, LA, United States | 501-1,000 | Exact match | 258 contacts → |
“One X: A Completions Partner, formerly Covenant Testing Technologies, is a leading provider of comprehensive completion services in the oil and gas industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Special Oilfield Services Co. LLCspecialoilfield.com HQ: Muscat, OmanReported employees: 501-1,000 | Muscat, Oman | 501-1,000 | Exact match | 235 contacts → |
“Special Oilfield Services (SOS) was established on the 10th of March in 1986 as a Joint Venture between Mohsin Haider Darwish LLC (MHD), one of the largest and oldest business…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Reservoir Groupreservoirgroup.com HQ: Stafford, United StatesReported employees: 201-500 | Stafford, United States | 201-500 | Exact match | 190 contacts → |
“Reservoir Group is a world-class niche oilfield services company that has been addressing customer challenges for more than 70 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Geodynamics, INCperf.com HQ: Millsap, TX, United StatesReported employees: 201-500 | Millsap, TX, United States | 201-500 | Exact match | 188 contacts → |
“GEODynamics creates and delivers downhole solutions that enable unsurpassed oil and gas well economics, performance, and lifespan.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: Edmonton, CanadaReported employees: 201-500 | Edmonton, Canada | 201-500 | Exact match | 171 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Oilequipoilequip.com.br HQ: Rio De Janeiro, BrazilReported employees: 201-500 | Rio De Janeiro, Brazil | 201-500 | Exact match | 155 contacts → |
“A Oilequip Produtos e Serviços Ltda.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Pintail Completionspintailcompletions.com HQ: Midland, TX, United StatesReported employees: 51-200 | Midland, TX, United States | 51-200 | Exact match | 145 contacts → |
“Simplified •Sustainable Approach to Wireline.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | TOP Drilling Companytopdco.com HQ: Bogotá, ColombiaReported employees: 201-500 | Bogotá, Colombia | 201-500 | Exact match | 138 contacts → |
“TOP DRILLING COMPANY, is a company dedicated to oil well drilling, completion and Workover, whose corporative commitment aims at excellence in its operational and management…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Reach Wirelinereachwireline.com HQ: Jacksboro, TX, United StatesReported employees: 201-500 | Jacksboro, TX, United States | 201-500 | Exact match | 134 contacts → |
“At Reach Wireline, we provide more than wireline services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Conquest Completion Services, LLCconquestllc.com HQ: Shreveport, TX, United StatesReported employees: 201-500 | Shreveport, TX, United States | 201-500 | Exact match | 108 contacts → |
“Conquest Completion Services is the leading coil tubing and completion’s service provider in the Permian Basin.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Completion OIL Tools Private Limitedcompletionoiltools.com HQ: Bhiwadi, IndiaReported employees: 201-500 | Bhiwadi, India | 201-500 | Exact match | 96 contacts → |
“Completion Oil Tools is an eminent in Downhole Tools.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Fortis Energy Services, INCfortisenergyservices.com HQ: Troy, ND, United StatesReported employees: 51-200 | Troy, ND, United States | 51-200 | Exact match | 88 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | American Well Servicesamericanwellservices.net HQ: Midland, TX, United StatesReported employees: 201-500 | Midland, TX, United States | 201-500 | Exact match | 81 contacts → |
“American Well Services is located in Midland, TX and provides well services rigs for the purpose of workover or completion operations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Peak Completionspeakcompletions.com HQ: Midland, TX, United StatesReported employees: 51-200 | Midland, TX, United States | 51-200 | Exact match | 77 contacts → |
“Peak Completions is a leading oil and gas down hole technology provider that offers in-house engineering, manufacturing, and dedicated service to operators around the globe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Liberty Energy - Canadalibertyenergy.com HQ: Calgary, AB, CanadaReported employees: 1,001-5,000 | Calgary, AB, Canada | 1,001-5,000 | Exact match | 73 contacts → |
“Liberty is a leading North American oilfield services firm that offers one of the most innovative suites of completion services and technologies to onshore oil and natural gas…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | C&j Well Services, LLCcjws.com HQ: Bakersfield, CA, United StatesReported employees: 501-1,000 | Bakersfield, CA, United States | 501-1,000 | Exact match | 69 contacts → |
“C&J Well Services, LLC is focused on downhole oil well services including drilling and workover rig operations, well plug and abandonment and well stimulation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Servicios Petroleros Olimpiaspolimpia.mx HQ: MexicoReported employees: 51-200 | Mexico | 51-200 | Exact match | 69 contacts → |
“Servicios de Perforación, Terminación y Reparación de pozos Petroleros Terrestres y Geotérmicos.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 266 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Open hole completion services: dataset insights
November 6, 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
266 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 country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 266 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 6, 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 ↗
Open hole completion services by location
2 lists · largest firstEvery Open hole completion services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for open hole completion 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 open hole completion services did RevenueBase find worldwide?
The saved snapshot records 266 matching company records, 15,086 tracked contacts and 4,649 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 6, 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
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 open hole completion services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/open-hole-completion-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗