CO2 storage in geological formations represents today one of the main new technological solutions for CO2 emission mitigation. Carbon capture and storage technology (CCS) includes capture of anthropogenic CO2 from various emitters, its transportation and injection in different types of geological formations such as: depleted oil and gas reservoirs, saline formations, unmined coal beds, partially depleted oil reservoirs for enhanced oil recovery (EOR-CO2 method) and others. The analysis of numerous criteria that are determining the success of process implementation from a technical, safety, ecological and economic point of view is necessary for considering the optimal CO2 geological storage option. In this paper, an overview of CO2 geological storage types is presented, with an emphasis on criteria for selection of most adequate CO2 storage option. They include geological, physical, thermodynamic, hydrodynamic, techno economic, social criteria, as well as the regulatory issues that are key factors for CCS technology development and further deployment.
Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based on empirical data from the selected oil fields. Results are presented in two ways: according to the surfaces of irregular geometric bodies, and their gravity with the scattering of results, i.e., on smaller and greater possibilities of interpreting results when there are small differences in outputs. Finally, a sensitivity analysis of the model is presented.
Danas se u svetu za eksploataciju naftnih ležišta mehaničkim metodama primenjuju različiti tipovi dubinskih pumpi (klipne, centrifugalne, zavojne, hidraulične), hidromlazne pumpe i gas lift (kontinualni, povremeni i klipni). Maksimalne vrednosti proizvodnje fluida, ostvarene mehaničkim metodama eksploatacije, se međusobno veoma razlikuju. U cilju izbora optimalne mehaničke metode koriste se modeli višekriterijumskih analiza. U radu je predstavljena analiza primene višekriterijumskih modela VIKOR, TOPSIS, ELECTRE, AHP i PROMETHEE u cilju izbora optimalne mehaničke metode eksploatacije karakteristične naftne bušotine sa istražnog područja Srbije. Rezultati rangiranja primenljivosti dubinskih pumpi na klipnim šipkama, hidrauličnih pumpi, zavojnih pumpi, gas lifta i električnih uronjenih centrifugalnih pumpi, ukazuju da se kod svih navedenih višekriterijumskih modela, osim u slučaju PROMETHE modela, nalaze na prva dva mesta kao optimalne metode eksploatacije dubinske pumpe na klipnim šipkama i gas lift.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.