Company lists · Data refreshed September 2026

Top 25 Oil and gas outsourced accounting firms worldwide

RevenueBase identified 8,488 company matches for oil and gas outsourced accounting firms worldwide as of September 2026 and tracks 99,425 professional contacts across them, including 12,324 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for oil and gas outsourced accounting firms 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 September 21, 2026. Country and city lists for oil and gas outsourced accounting firms 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built
8,488Companies
99,425Contacts tracked
12,324Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest oil and gas outsourced accounting firms worldwide

Ranked by team size
Top 25 of 8,488 company matches for oil and gas outsourced accounting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchJakarta Selatan, IndonesiaHQ recorded Sep 21, 20261,001-5,0003,932 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 · Sep 21, 2026 · View company records in RevenueBase
2Exact matchDubai, United Arab EmiratesHQ recorded Sep 21, 20261,001-5,0002,249 contacts →

Exact match

“OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchAustin, TX, United StatesHQ recorded Sep 21, 202610001+2,231 contacts →

Exact match

“OUR PEOPLE, YOUR PRIORITIES Streamline your finance & accounting team at 50% cost savings with a team as small as one.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact match北京市, ChinaHQ recorded Sep 21, 202610001+1,952 contacts →

Exact match

“Sinopec International Petroleum Service Corporation SSC”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchComuna 1, ArgentinaHQ recorded Sep 21, 20261,001-5,0001,159 contacts →

Exact match

“Somos la compañía de energía lider en la prestación de servicios integrados en la industria Oil & Gas Nuestros servicios y soluciones permiten integran toda la cadena de valor del…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchUnited StatesHQ recorded Sep 21, 20261,001-5,000994 contacts →

Exact match

“Empresa líder en el Sector Petrolero, con presencia a Nivel Nacional, principales clientes PEMEX Y CFE, con servicios como perforación de pozos terrestres, Marinos, Geotérmicos…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchRecife, BrazilHQ recorded Sep 21, 2026501-1,000833 contacts →

Exact match

“A Bernhoeft Contadores é uma empresa de atuação nacional que oferece terceirização de serviços contábeis para clientes de diversos portes e segmentos.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchVung Tau, VietnamHQ recorded Sep 21, 20265,001-10,000793 contacts →

Exact match

“Exploration and development oilfield”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchSan Antonio, TX, United StatesHQ recorded Sep 21, 20261,001-5,000770 contacts →

Exact match

“Pioneer Energy Services is now Patterson-UTI”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchUnited StatesHQ recorded Sep 21, 2026201-500745 contacts →

Exact match

“Burgan Company for Well Drilling, Trading & Maintenance K.S.C was founded in 1970.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchAhmedabad, IndiaHQ recorded Sep 21, 2026501-1,000714 contacts →

Exact match

“Deep Industries Limited started in the year 1991, with a primary objective of catering the ever increasing demand for Oil and Gas Industry.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchCairo, EgyptHQ recorded Sep 21, 2026501-1,000669 contacts →

Exact match

“EMEC is a regional oil and gas services company built on more than four decades of operational experience, regional insight, and deep technical expertise.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchScott, LA, United StatesHQ recorded Sep 21, 20261,001-5,000570 contacts →

Exact match

“Improving efficiency and reducing costs, all while meeting safety requirements, is the challenge faced by every operator in the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchHarrow, United KingdomHQ recorded Sep 21, 2026201-500477 contacts →

Exact match

“Outbooks is a leading provider of outsourcing services to accounting and bookkeeping firms.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchHyderabad, IndiaHQ recorded Sep 21, 20261,001-5,000477 contacts →

Exact match

“Share Microfin Ltd is an Accounting company located in 1-224/58, Rajeev Nagar, Nacharam, Hyderabad, Andhra Pradesh, India.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Sep 21, 2026201-500424 contacts →

Exact match

“EnerVest is a top-tier, low-cost oil and natural gas operating company.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchTehran, IranHQ recorded Sep 21, 20261,001-5,000404 contacts →

Exact match

“North Drilling, a leading company in oil and gas well drilling, has worked out important strategies in line with its vision plan.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchNew Maadi, EgyptHQ recorded Sep 21, 20261,001-5,000391 contacts →

Exact match

“Egyptian General Petroleum Corporation- EGPC (الهيئة المصرية العامة للبترول) is a holding company which was established in 1956.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchCoral Springs, FL, United StatesHQ recorded Sep 21, 2026201-500320 contacts →

Exact match

“Unison Globus is a global accounting outsourcing and offshore staffing partner dedicated to supporting CPA firms and accounting professionals.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchDubai, United Arab EmiratesHQ recorded Sep 21, 2026501-1,000307 contacts →

Exact match

“GET Global Group provides turnkey solutions that lower Operating Expenses, provide operational flexibility, share risks, optimize resources, and develop local capacity in the…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchCut Off, LA, United StatesHQ recorded Sep 21, 2026201-500272 contacts →

Exact match

“Founded as C&D Wireline in 1968, with C&D Production Specialist joining the business in 1993, today Crosby Energy Services is a certified Women’s Business Enterprise National…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchJakarta Pusat, IndonesiaHQ recorded Sep 21, 20261,001-5,000270 contacts →

Exact match

“PT Permata Karya Jasa (Perkasa) merupakan anak perusahaan PT Permata Graha Nusantara (PGN Mas) yang didirikan pada tanggal 29 April 2015, pendirian PT Permata Karya Jasa…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchHyderabad, IndiaHQ recorded Sep 21, 2026201-500260 contacts →

Exact match

“At Oremus Corporate Services, we specialize in delivering top-notch Accounting and Bookkeeping, Secretarial Compliance, Payroll, Tax, HR, and Business Advisory Services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchSpring, TX, United StatesHQ recorded Sep 21, 2026201-500253 contacts →

Exact match

“For more than 40 years, M&H has been a trusted source for oil & gas consulting services that maximize value for clients.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchBhilai, IndiaHQ recorded Sep 21, 202651-200243 contacts →

Exact match

“Virtual Clone is a leading provider of accounting outsourcing services, tailored specifically for ACCA/FCCA and Chartered Accountancy firms in the UK and Australia.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 8,488 oil and gas outsourced accounting firms worldwide

See the full list, filter by size, metro and specialty, and access 12,324 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Oil and gas outsourced accounting firms worldwide at a glance

As of Sep 21, 2026
12.4%Verified-email coverage
11.7Average contacts per company
1-10Median size (employees)
2.4%Largest-city concentration · Houston
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
5,598
11-50
2,045
51-200
538
201-500
149
501-1,000
44
1,001-5,000
44
5,001-10,000
12
10001+
7

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 oil and gas outsourced accounting firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “oil and gas outsourced accounting firms” 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 12,324 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 September 21, 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.

Oil and gas outsourced accounting firms by location

35 lists · largest first

Every Oil and gas outsourced accounting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “oil and gas outsourced accounting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas outsourced accounting firms are there worldwide?

RevenueBase identified 8,488 company matches for oil and gas outsourced accounting firms worldwide as of September 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?

PT Elnusa TBK tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most oil and gas outsourced accounting firms?

The United States leads with 2,384 companies, followed by Brazil (753) and the United Kingdom (568). Every oil and gas outsourced accounting firms list by country and city is linked on this page.

Which city has the most oil and gas outsourced accounting firms?

Houston leads with 206 company records, followed by Calgary (112) and Sao Paulo (102).

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 12,324 professional contacts with verified work emails tracked across these 8,488 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 September 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 8,488 oil and gas outsourced accounting firms worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.