Cristina M. Quintella, SPE, LabLaser, Instituto de Química, Universidade
Federal da Bahia; Campus de Ondina, Salvador, BA, Brazil, CEP: 40.170-290;
Rodolfo Dino, SPE; Ana Paula Santana Musse, SPE, Petrobras/CENPES
Contextualized overview of the CO2 EOR and its geologic storage, with critical
evaluation of state-of-art and technological development through patents and
scientific articles, focusing on annual evolution, technology owners
(countries, companies, R&D institutions), inventors, annual evolution of
the patents portifolia, field projects, company shared technology, IPC codes,
technologic trends and fields, miscible and immiscible processes, capture
technologies, relationships between the annual evolution of crude oil
production, price, patent deposits and articles published, and technologic
maturity of geologic storage.
With the high impact on climatic changes, the energy industry is aiming to
recover the planet climatic conditions by developing feasible processes. There
are a reasonable number of field projects and are several technologic
challenges are identified. The annual evolution of patents for CO2 EOR has the
same trend as the other EOR methods, the deposits increase significantly near
the petrol crises.
The main technology owners are Texaco, Mobil, Chevron and Shell. In indexed
articles, BP, Chevron and Shell are the companies that published more and
University of Regina (Canada), is the academic leader.
Most of the CO2 EOR field projects are in the US, being US, Canada and Norway
pioneers in carbon sequestration. In the Latin America, Petrobras intends to
act on all Carbon Capture and Storage chain. The inventors usually act in
several technologic fields. Texaco, Mobil, Chevron, ConocoPhillips and Shell
invested in alternated injection and surfactants addition. Shell made numeric
simulation for miscible and immiscible fluids dislocation. ConocoPhillips
studied CO2 correlations for miscibility pressures. University of Regina
studied interfacial tension CO2-oil. University of Texas studies foams to
change the injection profile.
Over 90% of the patents are miscible processes. Patented capture technologies
are adsorption, absorption, ionic liquids, and membranes, MOFs, among