Aleph search

Aleph lets you search over 2 million public domain documents filed by oil & gas and mining companies to financial regulars around the world. All documents are indexed and searchable. You can register and create email alerts to follow specific search queries, and import document sources. Our experts are ready to advice you and discuss how you can integrate Aleph in your work.

Learn more ...

Document Sources

US Filings (EDGAR)
Canadian Corporate Filings
Australian Stock Exchange
Bombay Stock Exchange
London Stock Exchange
Johannesburg Exchange
OpenOil Contracts
EITI reports


Mailing List

Subscribe to our Mailing List and stay up to date

Featured Video

Concession Maps

Each area is the co-ordinates of an oil or mining project. Those highlighted lead through to relevant entries in our databases on contracts, concessions, production, reserves, costs and corporate groups involved. All data come from relatively authoritative sources: government or the companies.

Financial Modeling Program

Open financial models are the natural next stage of extractives governance. We are running a free mentoring program to develop financial models of upstream oil, gas and mining projects, with the aim of creating a worldwide network of practitioners from civil society, government or private sector. Interested? Contact us!

Corporate Mapping

With over 1,000 affiliate companies in more than 80 jurisdictions, BP controls a complex network of corporate entities. This map of BP's corporate structure shows their ownership relations, using only public disclosures that BP itself has made. It also includes key financials for 150 of the companies.

Recent Blog Posts (Read all Posts)

With Mandatory Disclosures, More Open, Granular Oil Price Data

on August 15, 2016 · Leave a Comment 

This blog was also posted on the Natural Resource Governance Institute website and was written by David Mihalyi and Anton Rühling. Many oil-rich countries’ governments reap huge and notoriously opaqueproduction revenues. In the past, transparency initiatives were limited to exposing tax payments. However, EITI reports and company disclosures are exposing more details on these deals. We are more »

Using Aleph to build cash flow models – the example of Vaca Muerta, Argentina

on August 5, 2016 · Leave a Comment 

This is part 1 of our series on how to use Aleph, the OpenOil search engine for Extractive Industries Corporate Filings. In the following you can learn about finding project economics data, exemplified on the Vaca Muerta formation in Argentina. The Vaca Muerta formation – background and context Argentina holds the second largest shale gas more »

Press Release: OpenOil Launches Aleph, a Search Engine for Extractive Industries Corporate Filings

on August 4, 2016 · Leave a Comment 

Press Release For Immediate Use Berlin, 4 August 2016 – OpenOil, a Berlin-based consultancy, has launched Aleph, a new tool that enables government officials, journalists, financial analysts and researchers to search through corporate filings of publicly listed extractive companies across multiple jurisdictions. At launch, users can utilise Aleph to search through more than two million documents, more »

Recent Twitter Posts (Follow us @open_oil)

OpenOil @Open_Oil
Notably, #Glencore half-year results include $792m #oil impairment in #Chad – see our financial model for context:
OpenOil @Open_Oil
#Glencore, along with the rest of the #mining industry, has had a tough few years - half-year results show: