Session: 11-08-01 Advances in Carbon Capture Utilization and Storage (CCUS)

Paper Number: 136476

136476 - Ccus in a Complex Fluid Column, From Gas Condensate to Heavy Oil: A Mature Compositional Reservoir Real Case in North of Monagas, Venezuela 

Carbon Capture Utilization and Storage (CCUS) in El Carito-Mulata-Santa Barbara fields represents a great challenge due to the multiple phases present in the reservoir (significant variation of composition with depth from gas condensate to heavy oils and tarmat) and the presence of local water zones and aquifers. For more than 20 years these fields been under pressure maintenance to avoid asphaltene precipitation issues, by injecting water, natural gas, and several studies have been focused on the injection of alternative gases such as carbon dioxide and nitrogen.The scope of this study is to evaluate the feasibility of CO2 injection in El Carito-Mulata-Santa Barbara fields though a compositional simulation model, and to understand the main mechanisms of the process.

To evaluate the feasibility of CO2 injection in the study area, a compositional model previously tunned with real laboratory and field data was used, including PVT tests, swelling, slim tube and coreflood tests.This compositional model considers the three parameters Peng Robinson equation of state for the adjustment of laboratory experiments and a lumping scheme that allows the evaluation of natural gas, nitrogen, and carbon dioxide. Different scenarios were evaluated in the full field numerical simulation model to predict the injection of CO2 in different zones of the reservoir (in the gas condensate zone, black oil zone and in the water zone), as well as the possible WAG CO2 injection.

Results of this study show the impact of mechanisms such as miscibility/solubility/oil swelling and trapping on the evaluation of CCUS in El Carito-Mulata-Santa Barbara fields, and their effect on the recovery of hydrocarbons. It is highlighted the importance of carrying out a data acquisition and lab test program as well as a field monitoring plan for the calibration of the reservoir model to current reservoir conditions. Results of this study will be an input for the technical-economic evaluation of CCUS in El Carito-Multa-Santa Barbara fields and future feasibility studies of CCUS for field application in Venezuela.

Presenting Author: Fatima Alhameli Khalifa University of Science and Technology

Presenting Author Biography: Name: Fatima Alhameli

Institution: Khalifa University of Science & Technology

Email Address: 100050092@ku.ac.ae

Authors:

Fernancelys Rodriguez Consultant
Adriana Patete PDVSA
Hadi Belhaj Khalifa University of Science and Technology
Maria Llamedo PDVSA INTEVEP - UNIMET Caracas
Fatima Alhameli Khalifa University of Science & Technology
Mohammed Aldhuhoori Khalifa University of Science and Technology