Banca de DEFESA: GLEN OLIVEIRA MARTIN JUNIOR

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : GLEN OLIVEIRA MARTIN JUNIOR
DATA : 05/03/2018
HORA: 08:00
LOCAL: Auditório do CCET/UFRN
TÍTULO:

Study of the SAGDOX Process applied to a Heavy Oil Reservoir

PALAVRAS-CHAVES:

SAGDOX; SAGD; steam injection; in-situ combustion; air injection; oxygen injection; thermal recovery; heavy oil

PÁGINAS: 120
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
RESUMO:

Heavy oil is more difficult to be extracted, it requires the application of enhanced oil recovery processes in order to be produced. The recovery of this type of oil can be improved by thermal processes, that consist in elevating the temperature, causing oil viscosity reduction, allowing it to flow better. The Steam-Assisted Gravity Drainage (SAGD) is a well-known method, proved and successfully used around the world. In-situ combustion is another thermal process well consolidated. In order to improve SAGD performance, in-situ combustion advantages were mixed with SAGD’s, proposing a new process called Steam-Assisted Gravity Drainage with Oxygen addition (SAGDOX), by Nexen Inc., in 2013. SAGDOX basically consists in using the wells structure of SAGD, and add a vertical air injector well, aiming to increase oil recovery. The process is in development stage, with laboratory experimentation and physical model tests, with no field testing or pilots yet. In this paper, it was developed a parametric study of SAGDOX process applied to a heavy oil reservoir, with characteristics from Northeast Region of Brazil. Experiments were conducted using STARS software, a thermal reservoir simulator by Computer Modelling Group, and the project total time was considered 20 years. Experiments were planned using Design of Experiments, and cumulative oil production was analyzed for different values for the following operational parameters: steam injection rate, air injection rate, distance between horizontal wells, distance of air injection well and air injector well completion. Sensibility analysis indicated that all parameters were statistically significant, being the distance between horizontal wells the most influent parameter.  Further results indicate that is better to inject pure oxygen, instead of air, leading to higher oil recovery factors. The SAGDOX process reached lower oil recovery factors when compared to traditional SAGD, but showed that it can anticipate oil production.

MEMBROS DA BANCA:
Externo à Instituição - ELTHON JOHN RODRIGUES DE MEDEIROS - IFRN
Presidente - 1679234 - JENNYS LOURDES MENESES BARILLAS
Interno - 1149372 - TARCILIO VIANA DUTRA JUNIOR