Banca de DEFESA: ÁRLEY SOUZA CARVALHAL

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ÁRLEY SOUZA CARVALHAL
DATA : 15/12/2020
HORA: 14:00
LOCAL: videoconferência na plataforma RNP (sala PEI-UFBA)
TÍTULO:

SIMULATION OF LOW SALINITY AND CO2 WATER INJECTION IN OIL RESERVOIRS: THE EFFECT OF CO2 CONCENTRATION AND THE THREE-PHASE RELATIVE PERMEABILITY MODEL.

PALAVRAS-CHAVES:

pre-salt fields, CO2 capture, low salinity water injection.

PÁGINAS: 112
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Produção
RESUMO:

The high CO2 content of Brazil's pre-salt fields, which may reach values from 20% to 44% molar, presents both a challenge as well as an opportunity. CO2 stripped from the produced gas cannot be released into the atmosphere due to environmental restrictions. One of the techniques for CO2 capture is reinjection in the reservoir. This work aims to evaluate an enhanced oil recovery technique that includes CO2 capture. Enhanced oil recovery techniques have as an aim additional oil recovery when compared with primary production, i.e., oil recovery that uses only the reservoir’s natural energy. The technique here investigated, low salinity water alternating CO2 injection, has the potential of combining geochemistry effects caused by low salinity water injection with CO2 capture, which also may promote additional oil recovery by itself. Geochemistry effects that appear with low salinity water injection lead to wettability alteration of reservoir rock, that changes to a more water-wet state, leading to increased oil recovery. This work has two investigation fronts on this technique: i. the effect of the CO2 content; ii. the effect of the three-phase relative permeability. The CO2 content have influence in this technique in three factors. First of all, this substance has great effect on thermodynamics properties of the oil. Second, the CO2 content defines the amount of the gas available for reinjection. Finally, this substance may promote reaction with rock minerals, and the rate of reaction is function of the content thereof. The three-phase relative permeability is a property of fluids in a porous media whose measurement is difficult and costly. As the technique assessed here includes inherently three phases (oil, water and gas), the three-phase relative permeability model have important impact on oil recovery estimation. Using a commercial simulator, different scenarios and production model are simulated in order to assess the effect of these two factor in this technique. The results show that both factor have significant effect in the oil recovery prediction, and thus must be carefully considered.

MEMBROS DA BANCA:
Interno - 2199115 - CRISTIANO HORA DE OLIVEIRA FONTES
Externo à Instituição - LUIS AMERICO CALÇADO
Externo à Instituição - LUIZ ERALDO ARAÚJO FERREIRA
Presidente - 1523793 - SILVIO ALEXANDRE BEISL VIEIRA DE MELO