Abstract
The innovative concept herein shown intends to present a new system of carbon capture and storage (CCS) from natural gas extracted on cement completions of gas wells by absorbent selective nanoporous materials, forming conducting channels on linked pores. CO2 fluids will be transported upwards and then injected and stored in upper nonproductive oil and gas porous rock reservoirs by the removal-transport-injection system (RTIS), assuring also the mechanical safety of the wells. This innovative concept allows the treatment of natural gas in oil and gas wells on fields, through the extraction of carbon dioxide. The natural gas will be free of CO2, the major responsible gas for green house effect and therefore its production will be environmentally friendly. Key words: Carbone dioxide, carbon capture and storage (CCS), gas wells, completion, removal-transport-injection system (RTIS).  
Highlights
Oil and Gas accounted close to 60% of primary energy consumption in 2017 and the gas quantity was higher than 20% (Dudley, 2019)
Oil and gas will account for almost 50% of primary energy consumption in 2040 and the gas quantity will be lower than 30%
This paper aims to present the concept of an advanced innovation in Oil and Gas industry: the CO2 capture from natural gas mixtures inside moderate and deep gas wells and its storage in upper nonproductive porous rock formations
Summary
Oil and Gas accounted close to 60% of primary energy consumption in 2017 and the gas quantity was higher than 20% (Dudley, 2019). Considering the rapid transition scenario (RT), the growth of the renewables will be the highest ever, with an increment between 1 and 10% in 15 years. In this scenario, oil and gas will account for almost 50% of primary energy consumption in 2040 and the gas quantity will be lower than 30%. The quantity of natural gas use in 2040, in conjunction with CCUS, will be about 1/3 of the total consumption amount (Dudley, 2019)
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