Welcome to Milleniun Energy


Milleniun Energy S.L.U was founded in 2019 as the result of an old dream of its founder, who gained experience in the world of oil, working in different companies, countries and cultures. This company faces the challenges of this new era of the oil and gas industry with knowledge, passion and aptitude. Millemiun: is a union of the words Millenum and Millennials.


Osvaldo Alonso has more than 20 years of experience in the oil and gas industry. He is a Petroleum Engineer from the National University of Cuyo. He has excellent technical and economic knowledge, as well as interpersonal skills, after working in Argentina, Libya, Spain, Algeria, Romania, Peru, Colombia and in the United Kingdom, as Reservoir Engineer, Senior Reservoir Engineers, Project Leader of Secondary Recovery, Reservoir Leader, Reservoir Supervisor and Production and Business Developer.

In his new position, as a director and co-founder, he wants to provide excellent reservoir and surface studies for the development and redevelopment of new and mature fields.

He is oriented to obtain results in the short, medium and long term applying traditional technical analysis helped with the new and revolutionary information technologies.

He is convinced that the subsurface studies and monitoring service carried out by the Work Forces of consulting companies can help reduce investment in this new stage with low oil prices.


  • Respect: We are honest both with ourselves and with others.
  • Integrity: Ethics and integrity are the pillars of our company.
  • Collaboration: We work together with clients and understand them, providing them with the best solutions.
  • Creativity: We innovate and make every effort to provide the best solution at all times.
  • Credibility: We believe that the quality of our service defines us as we are.


Maximize the benefits of customers by providing quality services, which optimize production and reduce costs, promoting safe operations and taking care of the environment.


Provide the best technical and economic solutions to help you in the re-development of your mature fields, apply the appropriate EOR method and give support in unconventional reservoirs, providing quality services at competitive prices.


If you have any questions, please, contact us.