Petroleo Brasileiro S.a. - Petrobras

Uniao Brasileira De Educacao E Assistencia-mantenedora Da Pucrs

Felipe Dalla Vecchia

Dellyo Ricardo Dos Santos Alvares

Sonia Maria Cabral De Menezes

Sandra Mara De Oliveira Einloft

Marta Kerber Schütz

Renan Bordulis Martel

Darlan Pontin

Gabriela Gonçalves Dias Ponzi

Victor Hugo Jacks Mendes Dos Santos

Ana Paula Santana Musse

Amanda Sofia De Guimaräes E Stepanha

Amanda Sofia De Guimarães E Stepanha

The present invention describes a hydraulic cement composition, process and use thereof, wherein the composition comprises a hydraulic cement composition with increased resistance against carbon dioxide (CO) for application in reservoirs such as oil and gas and carbon capture and storage (CCS) wells; with improved performance of cement paste formulations as a material for application in primary, secondary cementing, recovery and/or plugging operations, of reservoirs/wells that operate with high COcontent; as a technological alternative to guarantee the integrity of wells in CO-rich environments for long periods of time, without any additional intervention to the already current operational procedures for cementing wells, and with cost reduction in relation to class G cement (currently, the main raw material); and sufficient chemical resistance to carry out enhanced oil (EOR) and gas (EGR) recovery by injecting high levels of CO, increasing reservoir pressure throughout the extraction period of hydrocarbon reservoirs.

Hydraulic cement composition, process and use

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Porto Alegre, Brazil

Felipe Dalla Vecchia