Banca de DEFESA: LUISA LARROUDÉ OLIVIERI SETARO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LUISA LARROUDÉ OLIVIERI SETARO
DATE: 03/06/2022
TIME: 09:00
LOCAL: videoconferência na plataforma RNP (sala PEI-UFBA)
TITLE:

SIMULATION OF ALTERNATE CO2 AND BRINE INJECTION IN OIL RESERVOIRS: EFFECT OF PHASE DENSITY ON OIL RECOVERY FACTOR

KEY WORDS:

phase densities, CO2 solubility, phase viscosities, CO2 injection, brine injection, enhanced oil recovery

PAGES: 243
BIG AREA: Engenharias
AREA: Engenharia de Produção
SUMMARY:

The density of the oil, water and gas phases in fluid reservoirs is a key property to understanding the phenomena and mechanisms that govern oil recovery and other correlated properties such as CO2 solubility and phase viscosity. In this dissertation, the behavior of density, viscosity and CO2 solubility in the fluid phases were evaluated using oil recovery methods alternating or not with CO2, high salinity water (HSW), and low salinity water (LSW). Using the package GEM of the compositional simulator developed by Computer Modeling Group (CMG, Canada), the effects of these three properties on the oil recovery factor were evaluated, emphasizing density over time and by varying the position in the simulation grid. Only the physical effects were considered, disregarding the geochemical effects. The simulation was performed with oil and reservoir data from literature, and the Peng-Robinson (PR) cubic equation of state for each injection analyzed. Low salinity water was considered with a salt concentration of 5,000 ppm, while for the high salinity water it was 50,000 ppm. The reservoir temperature was kept constant at 71.11ºC, and the simulation period was five years. The results obtained in the GEM for the water phase density were compared with those calculated by empirical correlations. High salinity water alternating CO2 (CO2HSWAG) and low salinity water alternating CO2 (CO2LSWAG) presented close oil recovery factors (difference of 0.25 % between both injections) and the highest values for this property in this dissertation: 53.07% and 52.84%, respectively. This should be due to neglecting geochemical effects and the closer phase densities (oil, water and gas). CO2WAG injection provided an oil recovery factor of 52.82% and CO2 injection obtained 52.18%. HSW, LSW and H2O injections were very close (maximum difference among them was 0.05%), the oil recovery factor was, approximately, 39.60%.

BANKING MEMBERS:
Externo à Instituição - Hosiberto Batista de SantŽAna
Externo à Instituição - FABIO PEDRO DO NASCIMENTO
Externo à Instituição - FERNANDO LUIZ PELLEGRINI PESSOA - Senai
Presidente - 1523793 - SILVIO ALEXANDRE BEISL VIEIRA DE MELO