Version 1
: Received: 16 July 2024 / Approved: 16 July 2024 / Online: 17 July 2024 (08:37:12 CEST)
How to cite:
Bui, D.; Pham, D.; Nguyen, S.; Nguyen, K. Simulation-Based Optimization Workflow of CO2-EOR for Hydraulic Fractured Wells in Wolfcamp a Formation. Preprints2024, 2024071342. https://doi.org/10.20944/preprints202407.1342.v1
Bui, D.; Pham, D.; Nguyen, S.; Nguyen, K. Simulation-Based Optimization Workflow of CO2-EOR for Hydraulic Fractured Wells in Wolfcamp a Formation. Preprints 2024, 2024071342. https://doi.org/10.20944/preprints202407.1342.v1
Bui, D.; Pham, D.; Nguyen, S.; Nguyen, K. Simulation-Based Optimization Workflow of CO2-EOR for Hydraulic Fractured Wells in Wolfcamp a Formation. Preprints2024, 2024071342. https://doi.org/10.20944/preprints202407.1342.v1
APA Style
Bui, D., Pham, D., Nguyen, S., & Nguyen, K. (2024). Simulation-Based Optimization Workflow of CO2-EOR for Hydraulic Fractured Wells in Wolfcamp a Formation. Preprints. https://doi.org/10.20944/preprints202407.1342.v1
Chicago/Turabian Style
Bui, D., Son Nguyen and Kien Nguyen. 2024 "Simulation-Based Optimization Workflow of CO2-EOR for Hydraulic Fractured Wells in Wolfcamp a Formation" Preprints. https://doi.org/10.20944/preprints202407.1342.v1
Abstract
Hydraulic fracturing has enabled production from unconventional reservoirs in the U.S., but production rates often decline sharply, limiting recovery factors to under 10%. This study optimizes the CO2 huff-n-puff process for multistage-fractured horizontal wells in Wolfcamp A formation in the Delaware Basin. The potential for enhanced oil recovery and CO2 sequestration simultaneously was addressed using a coupled geomechanics-reservoir simulation. Geomechanical properties were derived from a 1D mechanical earth model and integrated into reservoir simulation to replicate hydraulic fracture geometries. The fracture model was validated using a robust production history matching. Fluid phase behavior analysis refined the equation of state, and 1D slim tube simulations determined a minimum miscibility pressure of 4300 psi for CO2 injection. After the primary production phase, various CO2 injection rates were tested from 1 to 25 MMSCFD/well, resulting in incremental oil recovery ranging from 6.3% to 69.3%. Different injection, soaking, and production cycles were analyzed to determine the ideal operating condition. The optimal scenario improved cumulative oil recovery by 68.8% while keeping the highest CO2 storage efficiency. The simulation approach proposed by this study provides a systematic workflow for evaluating and optimizing CO2 huff-n-puff in hydraulically fractured wells, enhancing the recovery factor of unconventional reservoirs.
Keywords
CO2-EOR Huff-n-Puff; Hydraulic fracturing simulation; Hydrodynamic-geomechanical coupled model; Wolfcamp A formation; Optimizing recovery of unconventional reservoir.
Subject
Engineering, Other
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
