Company lists · Data refreshed November 2026
Top 25 Upstream exploration companies worldwide
RevenueBase identified 2,764 company matches for upstream exploration companies worldwide as of November 2026 and tracks 195,694 professional contacts across them, including 43,441 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers company matches for upstream exploration companies 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 upstream exploration companies 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 upstream exploration companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 58,281 contacts → | ||||
Exact match “We collaborate and engineer solutions to maximize asset value for our customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 6,114 contacts → | ||||
Exact match “We aim to thrive through the global energy transition with a low-cost, lower-carbon, profitable, resilient and diversified portfolio.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 5,544 contacts → | ||||
Exact match “We are an independent oil and natural gas acquisition, exploitation and exploration company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 4,263 contacts → | ||||
Exact match “We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 3,868 contacts → | ||||
Exact match “Murphy Oil Corporation is a global independent oil and natural gas exploration and production company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 3,694 contacts → | ||||
Exact match “Anadarko is among the world’s largest independent oil and natural gas exploration and production companies, with corporate offices in The Woodlands, Texas.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 3,155 contacts → | ||||
Exact match “Medco E&P Indonesia, a subsidiary of Medco Energi Internasional Tbk, is dedicated to oil and gas operations in Indonesia, with a focus on upstream activities such as exploration…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 3,031 contacts → | ||||
Exact match “PETRONAS CARIGALI SDN.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 2,958 contacts → | ||||
Exact match “Pluspetrol es una empresa privada de energía con más 45 años de experiencia en la exploración y producción de hidrocarburos.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 2,497 contacts → | ||||
Exact match “Afren is an independent oil and gas exploration and production company with a portfolio of 29 assets across 11 countries spanning the full cycle E&P value chain.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 2,249 contacts → | ||||
Exact match “Sinopec International Petroleum Service Corporation SSC” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 2,043 contacts → | ||||
Exact match “Here in Australia we're harnessing the most powerful energy in the world – Will Power.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 1,811 contacts → | ||||
Exact match “PT Pertamina Hulu Rokan (PHR) is a subsidiary of PT Pertamina Hulu Energi (PHE)” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 1,792 contacts → | ||||
Exact match “Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 1,703 contacts → | ||||
Exact match “PT Pertamina Hulu Energi (PHE) merupakan anak perusahaan PT Pertamina (Persero).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 1,681 contacts → | ||||
Exact match “Capital Limited is a leading service provider for the exploration and mining industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 1,505 contacts → | ||||
Exact match “Continental Resources, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 1,436 contacts → | ||||
Exact match “We are energy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 1,366 contacts → | ||||
Exact match “FET (Forum Energy Technologies, Inc.) is a global company, serving the crude oil, natural gas, and renewable energy industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 1,238 contacts → | ||||
Exact match “BGP is one of the world's leading geophysical service companies, delivering a wide range of technologies, services and equipment to the oil and gas industry worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 1,139 contacts → | ||||
Exact match “Dragon Oil is an upstream Oil & Gas company engaged in exploration, development and production operations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 979 contacts → | ||||
Exact match “Cairn Energy PLC ('Cairn') is one of Europe's leading independent oil and gas exploration and production companies and is listed on the London Stock Exchange.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 867 contacts → | ||||
Exact match “Gran Tierra Energy Inc, together with its subsidiaries, is a company focused on oil and gas exploration and production in Azerbaijan, Canada, Colombia and Ecuador.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 861 contacts → | ||||
Exact match “As of May 7, 2026, Coterra has officially completed its merger with Devon Energy, marking an exciting new chapter for our organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 852 contacts → | ||||
Exact match “Pioneer Energy Services is now Patterson-UTI” 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 “upstream exploration companies”. 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 2,764 upstream exploration companies worldwide
See the full list, filter by size, metro and specialty, and access 43,441 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Upstream exploration companies 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 upstream exploration companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “upstream exploration companies” 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 43,441 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.
Upstream exploration companies by location
17 lists · largest firstEvery Upstream exploration companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Upstream exploration companies based in the United States905
- Upstream exploration companies based in Canada200
- Upstream exploration companies based in the United Kingdom158
- Upstream exploration companies based in Australia109
- Upstream exploration companies based in Indonesia72
- Upstream exploration companies based in India70
- Upstream exploration companies based in Brazil55
- Upstream exploration companies based in Nigeria52
- Upstream exploration companies based in Egypt27
- Upstream exploration companies based in Malaysia25
Cities
- Upstream exploration companies based in Houston, United States205
- Upstream exploration companies based in Calgary, Canada120
- Upstream exploration companies based in Dallas, United States73
- Upstream exploration companies based in London, United Kingdom62
- Upstream exploration companies based in Denver, United States43
- Upstream exploration companies based in Fort Worth, United States39
- Upstream exploration companies based in Oklahoma City, United States33
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 “upstream exploration companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many upstream exploration companies are there worldwide?
RevenueBase identified 2,764 company matches for upstream exploration companies 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?
Halliburton tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most upstream exploration companies?
The United States leads with 905 companies, followed by Canada (200) and the United Kingdom (158). Every upstream exploration companies list by country and city is linked on this page.
Which city has the most upstream exploration companies?
Houston leads with 205 company records, followed by Calgary (120) and Dallas (73).
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 43,441 professional contacts with verified work emails tracked across these 2,764 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 2,764 upstream exploration companies worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 upstream exploration companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,764 matching company records for upstream exploration companies worldwide, with 195,694 tracked contacts and 43,441 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 upstream exploration companies 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 |  Halliburtonhalliburton.comHQ: Houston, United StatesReported employees: 10001+ | Houston, United States | 10001+ | Exact match | 58,281 contacts → |
“We collaborate and engineer solutions to maximize asset value for our customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Woodside Energywoodside.comHQ: Perth, AustraliaReported employees: 1,001-5,000 | Perth, Australia | 1,001-5,000 | Exact match | 6,114 contacts → |
“We aim to thrive through the global energy transition with a low-cost, lower-carbon, profitable, resilient and diversified portfolio.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  W&t Offshore Inc. Nyse WTIwtoffshore.comHQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 5,544 contacts → |
“We are an independent oil and natural gas acquisition, exploitation and exploration company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  PT Elnusa TBKelnusa.co.idHQ: Jakarta Selatan, IndonesiaReported employees: 1,001-5,000 | Jakarta Selatan, Indonesia | 1,001-5,000 | Exact match | 4,263 contacts → |
“We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Murphy OIL Corporationmurphyoilcorp.comHQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 3,868 contacts → |
“Murphy Oil Corporation is a global independent oil and natural gas exploration and production company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Anadarko Petroleum Corporationanadarko.comHQ: The Woodlands, TX, United StatesReported employees: 1,001-5,000 | The Woodlands, TX, United States | 1,001-5,000 | Exact match | 3,694 contacts → |
“Anadarko is among the world’s largest independent oil and natural gas exploration and production companies, with corporate offices in The Woodlands, Texas.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Medco E&p Indonesiamedcoenergi.comHQ: IndonesiaReported employees: 1,001-5,000 | Indonesia | 1,001-5,000 | Exact match | 3,155 contacts → |
“Medco E&P Indonesia, a subsidiary of Medco Energi Internasional Tbk, is dedicated to oil and gas operations in Indonesia, with a focus on upstream activities such as exploration…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Petronas Carigali Sdn. BHDpetronas.comHQ: Kuala Lumpur, MalaysiaReported employees: Not recorded | Kuala Lumpur, Malaysia | Not recorded | Exact match | 3,031 contacts → |
“PETRONAS CARIGALI SDN.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Pluspetrolpluspetrol.netHQ: Caba, IndiaReported employees: 1,001-5,000 | Caba, India | 1,001-5,000 | Exact match | 2,958 contacts → |
“Pluspetrol es una empresa privada de energía con más 45 años de experiencia en la exploración y producción de hidrocarburos.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  AFRENafren.comHQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 2,497 contacts → |
“Afren is an independent oil and gas exploration and production company with a portfolio of 29 assets across 11 countries spanning the full cycle E&P value chain.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Sinopec International Petroleum Service Corporationssc.sinopec.comHQ: 北京市, ChinaReported employees: 10001+ | 北京市, China | 10001+ | Exact match | 2,249 contacts → |
“Sinopec International Petroleum Service Corporation SSC” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Inpex Australiainpex.com.auHQ: Perth, United StatesReported employees: 1,001-5,000 | Perth, United States | 1,001-5,000 | Exact match | 2,043 contacts → |
“Here in Australia we're harnessing the most powerful energy in the world – Will Power.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Pertamina Hulu Rokanphr.pertamina.comHQ: Jakarta, IndonesiaReported employees: 1,001-5,000 | Jakarta, Indonesia | 1,001-5,000 | Exact match | 1,811 contacts → |
“PT Pertamina Hulu Rokan (PHR) is a subsidiary of PT Pertamina Hulu Energi (PHE)” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Geolog Internationalgeolog.comHQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 1,792 contacts → |
“Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  PT Pertamina Hulu Energiphe.pertamina.comHQ: Jakarta Selatan, IndonesiaReported employees: 10001+ | Jakarta Selatan, Indonesia | 10001+ | Exact match | 1,703 contacts → |
“PT Pertamina Hulu Energi (PHE) merupakan anak perusahaan PT Pertamina (Persero).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Capital Limitedcapdrill.comHQ: Mauritius, AustriaReported employees: 1,001-5,000 | Mauritius, Austria | 1,001-5,000 | Exact match | 1,681 contacts → |
“Capital Limited is a leading service provider for the exploration and mining industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Continental Resourcesclr.comHQ: Oklahoma City, TX, United StatesReported employees: 1,001-5,000 | Oklahoma City, TX, United States | 1,001-5,000 | Exact match | 1,505 contacts → |
“Continental Resources, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Southwestern Energyswn.comHQ: Spring, TX, United StatesReported employees: 501-1,000 | Spring, TX, United States | 501-1,000 | Exact match | 1,436 contacts → |
“We are energy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Forum Energy Technologiesf-e-t.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 1,366 contacts → |
“FET (Forum Energy Technologies, Inc.) is a global company, serving the crude oil, natural gas, and renewable energy industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  BGPbgp.com.cnHQ: Hebei, ChinaReported employees: 10001+ | Hebei, China | 10001+ | Exact match | 1,238 contacts → |
“BGP is one of the world's leading geophysical service companies, delivering a wide range of technologies, services and equipment to the oil and gas industry worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Dragon OILdragonoil.comHQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 1,139 contacts → |
“Dragon Oil is an upstream Oil & Gas company engaged in exploration, development and production operations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Cairn Energy PLCcairnenergy.comHQ: Edinburgh, United KingdomReported employees: 201-500 | Edinburgh, United Kingdom | 201-500 | Exact match | 979 contacts → |
“Cairn Energy PLC ('Cairn') is one of Europe's leading independent oil and gas exploration and production companies and is listed on the London Stock Exchange.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Gran Tierra Energygrantierra.comHQ: Calgary, AB, CanadaReported employees: 501-1,000 | Calgary, AB, Canada | 501-1,000 | Exact match | 867 contacts → |
“Gran Tierra Energy Inc, together with its subsidiaries, is a company focused on oil and gas exploration and production in Azerbaijan, Canada, Colombia and Ecuador.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Coterra Energycoterra.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 861 contacts → |
“As of May 7, 2026, Coterra has officially completed its merger with Devon Energy, marking an exciting new chapter for our organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Pioneer Energy Servicespatenergy.comHQ: San Antonio, TX, United StatesReported employees: 1,001-5,000 | San Antonio, TX, United States | 1,001-5,000 | Exact match | 852 contacts → |
“Pioneer Energy Services is now Patterson-UTI” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,764 company matches
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Upstream exploration companies: 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
2,738 records in the displayed employee bands.
26 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 2,764 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 ↗
Upstream exploration companies by location
17 lists · largest firstEvery Upstream exploration companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Upstream exploration companies based in the United States905
- Upstream exploration companies based in Canada200
- Upstream exploration companies based in the United Kingdom158
- Upstream exploration companies based in Australia109
- Upstream exploration companies based in Indonesia72
- Upstream exploration companies based in India70
- Upstream exploration companies based in Brazil55
- Upstream exploration companies based in Nigeria52
- Upstream exploration companies based in Egypt27
- Upstream exploration companies based in Malaysia25
Cities
- Upstream exploration companies based in Houston, United States205
- Upstream exploration companies based in Calgary, Canada120
- Upstream exploration companies based in Dallas, United States73
- Upstream exploration companies based in London, United Kingdom62
- Upstream exploration companies based in Denver, United States43
- Upstream exploration companies based in Fort Worth, United States39
- Upstream exploration companies based in Oklahoma City, United States33
Questions about this company list
What does Exact match mean for upstream exploration companies?
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 upstream exploration companies did RevenueBase find worldwide?
The saved snapshot records 2,764 matching company records, 195,694 tracked contacts and 43,441 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
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Cite this list
RevenueBase Data Team. Top 25 upstream exploration companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/upstream-exploration-companies.
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 upstream exploration companies worldwide
RevenueBase records 2,764 matching company records for upstream exploration companies worldwide, with 195,694 tracked contacts and 43,441 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 upstream exploration companies 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 | Halliburtonhalliburton.com HQ: Houston, United StatesReported employees: 10001+ | Houston, United States | 10001+ | Exact match | 58,281 contacts → |
“We collaborate and engineer solutions to maximize asset value for our customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Woodside Energywoodside.com HQ: Perth, AustraliaReported employees: 1,001-5,000 | Perth, Australia | 1,001-5,000 | Exact match | 6,114 contacts → |
“We aim to thrive through the global energy transition with a low-cost, lower-carbon, profitable, resilient and diversified portfolio.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | W&t Offshore Inc. Nyse WTIwtoffshore.com HQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 5,544 contacts → |
“We are an independent oil and natural gas acquisition, exploitation and exploration company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | PT Elnusa TBKelnusa.co.id HQ: Jakarta Selatan, IndonesiaReported employees: 1,001-5,000 | Jakarta Selatan, Indonesia | 1,001-5,000 | Exact match | 4,263 contacts → |
“We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Murphy OIL Corporationmurphyoilcorp.com HQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 3,868 contacts → |
“Murphy Oil Corporation is a global independent oil and natural gas exploration and production company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Anadarko Petroleum Corporationanadarko.com HQ: The Woodlands, TX, United StatesReported employees: 1,001-5,000 | The Woodlands, TX, United States | 1,001-5,000 | Exact match | 3,694 contacts → |
“Anadarko is among the world’s largest independent oil and natural gas exploration and production companies, with corporate offices in The Woodlands, Texas.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Medco E&p Indonesiamedcoenergi.com HQ: IndonesiaReported employees: 1,001-5,000 | Indonesia | 1,001-5,000 | Exact match | 3,155 contacts → |
“Medco E&P Indonesia, a subsidiary of Medco Energi Internasional Tbk, is dedicated to oil and gas operations in Indonesia, with a focus on upstream activities such as exploration…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Petronas Carigali Sdn. BHDpetronas.com HQ: Kuala Lumpur, MalaysiaReported employees: Not recorded | Kuala Lumpur, Malaysia | Not recorded | Exact match | 3,031 contacts → |
“PETRONAS CARIGALI SDN.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Pluspetrolpluspetrol.net HQ: Caba, IndiaReported employees: 1,001-5,000 | Caba, India | 1,001-5,000 | Exact match | 2,958 contacts → |
“Pluspetrol es una empresa privada de energía con más 45 años de experiencia en la exploración y producción de hidrocarburos.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | AFRENafren.com HQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 2,497 contacts → |
“Afren is an independent oil and gas exploration and production company with a portfolio of 29 assets across 11 countries spanning the full cycle E&P value chain.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Sinopec International Petroleum Service Corporationssc.sinopec.com HQ: 北京市, ChinaReported employees: 10001+ | 北京市, China | 10001+ | Exact match | 2,249 contacts → |
“Sinopec International Petroleum Service Corporation SSC” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Inpex Australiainpex.com.au HQ: Perth, United StatesReported employees: 1,001-5,000 | Perth, United States | 1,001-5,000 | Exact match | 2,043 contacts → |
“Here in Australia we're harnessing the most powerful energy in the world – Will Power.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Pertamina Hulu Rokanphr.pertamina.com HQ: Jakarta, IndonesiaReported employees: 1,001-5,000 | Jakarta, Indonesia | 1,001-5,000 | Exact match | 1,811 contacts → |
“PT Pertamina Hulu Rokan (PHR) is a subsidiary of PT Pertamina Hulu Energi (PHE)” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Geolog Internationalgeolog.com HQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 1,792 contacts → |
“Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | PT Pertamina Hulu Energiphe.pertamina.com HQ: Jakarta Selatan, IndonesiaReported employees: 10001+ | Jakarta Selatan, Indonesia | 10001+ | Exact match | 1,703 contacts → |
“PT Pertamina Hulu Energi (PHE) merupakan anak perusahaan PT Pertamina (Persero).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Capital Limitedcapdrill.com HQ: Mauritius, AustriaReported employees: 1,001-5,000 | Mauritius, Austria | 1,001-5,000 | Exact match | 1,681 contacts → |
“Capital Limited is a leading service provider for the exploration and mining industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Continental Resourcesclr.com HQ: Oklahoma City, TX, United StatesReported employees: 1,001-5,000 | Oklahoma City, TX, United States | 1,001-5,000 | Exact match | 1,505 contacts → |
“Continental Resources, Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Southwestern Energyswn.com HQ: Spring, TX, United StatesReported employees: 501-1,000 | Spring, TX, United States | 501-1,000 | Exact match | 1,436 contacts → |
“We are energy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Forum Energy Technologiesf-e-t.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 1,366 contacts → |
“FET (Forum Energy Technologies, Inc.) is a global company, serving the crude oil, natural gas, and renewable energy industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | BGPbgp.com.cn HQ: Hebei, ChinaReported employees: 10001+ | Hebei, China | 10001+ | Exact match | 1,238 contacts → |
“BGP is one of the world's leading geophysical service companies, delivering a wide range of technologies, services and equipment to the oil and gas industry worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Dragon OILdragonoil.com HQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 1,139 contacts → |
“Dragon Oil is an upstream Oil & Gas company engaged in exploration, development and production operations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Cairn Energy PLCcairnenergy.com HQ: Edinburgh, United KingdomReported employees: 201-500 | Edinburgh, United Kingdom | 201-500 | Exact match | 979 contacts → |
“Cairn Energy PLC ('Cairn') is one of Europe's leading independent oil and gas exploration and production companies and is listed on the London Stock Exchange.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Gran Tierra Energygrantierra.com HQ: Calgary, AB, CanadaReported employees: 501-1,000 | Calgary, AB, Canada | 501-1,000 | Exact match | 867 contacts → |
“Gran Tierra Energy Inc, together with its subsidiaries, is a company focused on oil and gas exploration and production in Azerbaijan, Canada, Colombia and Ecuador.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Coterra Energycoterra.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 861 contacts → |
“As of May 7, 2026, Coterra has officially completed its merger with Devon Energy, marking an exciting new chapter for our organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Pioneer Energy Servicespatenergy.com HQ: San Antonio, TX, United StatesReported employees: 1,001-5,000 | San Antonio, TX, United States | 1,001-5,000 | Exact match | 852 contacts → |
“Pioneer Energy Services is now Patterson-UTI” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Upstream exploration companies: 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
2,738 records in the displayed employee bands.
26 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 2,764 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 ↗
Upstream exploration companies by location
17 lists · largest firstEvery Upstream exploration companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Upstream exploration companies based in the United States905
- Upstream exploration companies based in Canada200
- Upstream exploration companies based in the United Kingdom158
- Upstream exploration companies based in Australia109
- Upstream exploration companies based in Indonesia72
- Upstream exploration companies based in India70
- Upstream exploration companies based in Brazil55
- Upstream exploration companies based in Nigeria52
- Upstream exploration companies based in Egypt27
- Upstream exploration companies based in Malaysia25
Cities
- Upstream exploration companies based in Houston, United States205
- Upstream exploration companies based in Calgary, Canada120
- Upstream exploration companies based in Dallas, United States73
- Upstream exploration companies based in London, United Kingdom62
- Upstream exploration companies based in Denver, United States43
- Upstream exploration companies based in Fort Worth, United States39
- Upstream exploration companies based in Oklahoma City, United States33
Questions about this company list
What does Exact match mean for upstream exploration companies?
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 upstream exploration companies did RevenueBase find worldwide?
The saved snapshot records 2,764 matching company records, 195,694 tracked contacts and 43,441 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
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Cite this list
RevenueBase Data Team. Top 25 upstream exploration companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/upstream-exploration-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗