Version 1
: Received: 12 March 2024 / Approved: 12 March 2024 / Online: 12 March 2024 (14:11:39 CET)
How to cite:
Xu, S.; Wang, C.; Gao, B.; Wang, T. Research on the Effect of Carbon Dioxide Miscible Fracturing Huff and Puff in Enhancing Oil Recovery. Preprints2024, 2024030712. https://doi.org/10.20944/preprints202403.0712.v1
Xu, S.; Wang, C.; Gao, B.; Wang, T. Research on the Effect of Carbon Dioxide Miscible Fracturing Huff and Puff in Enhancing Oil Recovery. Preprints 2024, 2024030712. https://doi.org/10.20944/preprints202403.0712.v1
Xu, S.; Wang, C.; Gao, B.; Wang, T. Research on the Effect of Carbon Dioxide Miscible Fracturing Huff and Puff in Enhancing Oil Recovery. Preprints2024, 2024030712. https://doi.org/10.20944/preprints202403.0712.v1
APA Style
Xu, S., Wang, C., Gao, B., & Wang, T. (2024). Research on the Effect of Carbon Dioxide Miscible Fracturing Huff and Puff in Enhancing Oil Recovery. Preprints. https://doi.org/10.20944/preprints202403.0712.v1
Chicago/Turabian Style
Xu, S., Bin Gao and Tiezheng Wang. 2024 "Research on the Effect of Carbon Dioxide Miscible Fracturing Huff and Puff in Enhancing Oil Recovery" Preprints. https://doi.org/10.20944/preprints202403.0712.v1
Abstract
Carbon dioxide (CO2)miscible fracturing huff and puff technology plays a pivotal role in enhancing the recovery rate of crude oil, particularly in reservoirs with challenging physical properties, strong water sensitivity, high injection pressure, and complex water injection dynamics. In this study, the oil-increasing mechanism and huff and puff effect of CO2 miscible fracturing fluid are investigated through a comprehensive experimental approach. Specifically, experiments on PVT gas injection expansion, minimum miscible pressure, and CO2 miscible fracturing huff and puff are conducted on the G fault block reservoir in J Oilfield. The findings demonstrate that injecting CO2 into reservoirs leads to oil volume expansion, viscosity reduction, and saturation pressure increase. Additionally, the inclusion of solubilizers and viscosity reducers further enhances the efficiency of crude oil extraction. Solubilizers not only improve oil recovery but also reduce the minimum miscible pressure required for effective CO2 dispersion. Furthermore, the shut-in time, permeability, and huff and puff method all have considerable impacts on huff and puff recovery rate. This study offers valuable technical insights, supporting the application of CO2 miscible fracturing huff and puff technology to enhance oil recovery in low-permeability reservoirs.
Keywords
CO2 miscible fracturing; huff and puff; minimum miscible pressure; enhanced oil recovery; low-permeability reservoir
Subject
Engineering, Energy and Fuel Technology
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.
